Parcel.java revision e70e6aa62c6f3a9a79624a4f9d97df95edda0364
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.os; 18 19import android.annotation.IntegerRes; 20import android.annotation.NonNull; 21import android.annotation.Nullable; 22import android.text.TextUtils; 23import android.util.ArrayMap; 24import android.util.ArraySet; 25import android.util.Log; 26import android.util.Size; 27import android.util.SizeF; 28import android.util.SparseArray; 29import android.util.SparseBooleanArray; 30import android.util.SparseIntArray; 31 32import libcore.util.SneakyThrow; 33 34import java.io.ByteArrayInputStream; 35import java.io.ByteArrayOutputStream; 36import java.io.FileDescriptor; 37import java.io.FileNotFoundException; 38import java.io.IOException; 39import java.io.ObjectInputStream; 40import java.io.ObjectOutputStream; 41import java.io.ObjectStreamClass; 42import java.io.Serializable; 43import java.lang.reflect.Array; 44import java.lang.reflect.Field; 45import java.lang.reflect.Modifier; 46import java.util.ArrayList; 47import java.util.Arrays; 48import java.util.HashMap; 49import java.util.List; 50import java.util.Map; 51import java.util.Set; 52 53import dalvik.annotation.optimization.FastNative; 54import dalvik.system.VMRuntime; 55 56/** 57 * Container for a message (data and object references) that can 58 * be sent through an IBinder. A Parcel can contain both flattened data 59 * that will be unflattened on the other side of the IPC (using the various 60 * methods here for writing specific types, or the general 61 * {@link Parcelable} interface), and references to live {@link IBinder} 62 * objects that will result in the other side receiving a proxy IBinder 63 * connected with the original IBinder in the Parcel. 64 * 65 * <p class="note">Parcel is <strong>not</strong> a general-purpose 66 * serialization mechanism. This class (and the corresponding 67 * {@link Parcelable} API for placing arbitrary objects into a Parcel) is 68 * designed as a high-performance IPC transport. As such, it is not 69 * appropriate to place any Parcel data in to persistent storage: changes 70 * in the underlying implementation of any of the data in the Parcel can 71 * render older data unreadable.</p> 72 * 73 * <p>The bulk of the Parcel API revolves around reading and writing data 74 * of various types. There are six major classes of such functions available.</p> 75 * 76 * <h3>Primitives</h3> 77 * 78 * <p>The most basic data functions are for writing and reading primitive 79 * data types: {@link #writeByte}, {@link #readByte}, {@link #writeDouble}, 80 * {@link #readDouble}, {@link #writeFloat}, {@link #readFloat}, {@link #writeInt}, 81 * {@link #readInt}, {@link #writeLong}, {@link #readLong}, 82 * {@link #writeString}, {@link #readString}. Most other 83 * data operations are built on top of these. The given data is written and 84 * read using the endianess of the host CPU.</p> 85 * 86 * <h3>Primitive Arrays</h3> 87 * 88 * <p>There are a variety of methods for reading and writing raw arrays 89 * of primitive objects, which generally result in writing a 4-byte length 90 * followed by the primitive data items. The methods for reading can either 91 * read the data into an existing array, or create and return a new array. 92 * These available types are:</p> 93 * 94 * <ul> 95 * <li> {@link #writeBooleanArray(boolean[])}, 96 * {@link #readBooleanArray(boolean[])}, {@link #createBooleanArray()} 97 * <li> {@link #writeByteArray(byte[])}, 98 * {@link #writeByteArray(byte[], int, int)}, {@link #readByteArray(byte[])}, 99 * {@link #createByteArray()} 100 * <li> {@link #writeCharArray(char[])}, {@link #readCharArray(char[])}, 101 * {@link #createCharArray()} 102 * <li> {@link #writeDoubleArray(double[])}, {@link #readDoubleArray(double[])}, 103 * {@link #createDoubleArray()} 104 * <li> {@link #writeFloatArray(float[])}, {@link #readFloatArray(float[])}, 105 * {@link #createFloatArray()} 106 * <li> {@link #writeIntArray(int[])}, {@link #readIntArray(int[])}, 107 * {@link #createIntArray()} 108 * <li> {@link #writeLongArray(long[])}, {@link #readLongArray(long[])}, 109 * {@link #createLongArray()} 110 * <li> {@link #writeStringArray(String[])}, {@link #readStringArray(String[])}, 111 * {@link #createStringArray()}. 112 * <li> {@link #writeSparseBooleanArray(SparseBooleanArray)}, 113 * {@link #readSparseBooleanArray()}. 114 * </ul> 115 * 116 * <h3>Parcelables</h3> 117 * 118 * <p>The {@link Parcelable} protocol provides an extremely efficient (but 119 * low-level) protocol for objects to write and read themselves from Parcels. 120 * You can use the direct methods {@link #writeParcelable(Parcelable, int)} 121 * and {@link #readParcelable(ClassLoader)} or 122 * {@link #writeParcelableArray} and 123 * {@link #readParcelableArray(ClassLoader)} to write or read. These 124 * methods write both the class type and its data to the Parcel, allowing 125 * that class to be reconstructed from the appropriate class loader when 126 * later reading.</p> 127 * 128 * <p>There are also some methods that provide a more efficient way to work 129 * with Parcelables: {@link #writeTypedObject}, {@link #writeTypedArray}, 130 * {@link #writeTypedList}, {@link #readTypedObject}, 131 * {@link #createTypedArray} and {@link #createTypedArrayList}. These methods 132 * do not write the class information of the original object: instead, the 133 * caller of the read function must know what type to expect and pass in the 134 * appropriate {@link Parcelable.Creator Parcelable.Creator} instead to 135 * properly construct the new object and read its data. (To more efficient 136 * write and read a single Parceable object that is not null, you can directly 137 * call {@link Parcelable#writeToParcel Parcelable.writeToParcel} and 138 * {@link Parcelable.Creator#createFromParcel Parcelable.Creator.createFromParcel} 139 * yourself.)</p> 140 * 141 * <h3>Bundles</h3> 142 * 143 * <p>A special type-safe container, called {@link Bundle}, is available 144 * for key/value maps of heterogeneous values. This has many optimizations 145 * for improved performance when reading and writing data, and its type-safe 146 * API avoids difficult to debug type errors when finally marshalling the 147 * data contents into a Parcel. The methods to use are 148 * {@link #writeBundle(Bundle)}, {@link #readBundle()}, and 149 * {@link #readBundle(ClassLoader)}. 150 * 151 * <h3>Active Objects</h3> 152 * 153 * <p>An unusual feature of Parcel is the ability to read and write active 154 * objects. For these objects the actual contents of the object is not 155 * written, rather a special token referencing the object is written. When 156 * reading the object back from the Parcel, you do not get a new instance of 157 * the object, but rather a handle that operates on the exact same object that 158 * was originally written. There are two forms of active objects available.</p> 159 * 160 * <p>{@link Binder} objects are a core facility of Android's general cross-process 161 * communication system. The {@link IBinder} interface describes an abstract 162 * protocol with a Binder object. Any such interface can be written in to 163 * a Parcel, and upon reading you will receive either the original object 164 * implementing that interface or a special proxy implementation 165 * that communicates calls back to the original object. The methods to use are 166 * {@link #writeStrongBinder(IBinder)}, 167 * {@link #writeStrongInterface(IInterface)}, {@link #readStrongBinder()}, 168 * {@link #writeBinderArray(IBinder[])}, {@link #readBinderArray(IBinder[])}, 169 * {@link #createBinderArray()}, 170 * {@link #writeBinderList(List)}, {@link #readBinderList(List)}, 171 * {@link #createBinderArrayList()}.</p> 172 * 173 * <p>FileDescriptor objects, representing raw Linux file descriptor identifiers, 174 * can be written and {@link ParcelFileDescriptor} objects returned to operate 175 * on the original file descriptor. The returned file descriptor is a dup 176 * of the original file descriptor: the object and fd is different, but 177 * operating on the same underlying file stream, with the same position, etc. 178 * The methods to use are {@link #writeFileDescriptor(FileDescriptor)}, 179 * {@link #readFileDescriptor()}. 180 * 181 * <h3>Untyped Containers</h3> 182 * 183 * <p>A final class of methods are for writing and reading standard Java 184 * containers of arbitrary types. These all revolve around the 185 * {@link #writeValue(Object)} and {@link #readValue(ClassLoader)} methods 186 * which define the types of objects allowed. The container methods are 187 * {@link #writeArray(Object[])}, {@link #readArray(ClassLoader)}, 188 * {@link #writeList(List)}, {@link #readList(List, ClassLoader)}, 189 * {@link #readArrayList(ClassLoader)}, 190 * {@link #writeMap(Map)}, {@link #readMap(Map, ClassLoader)}, 191 * {@link #writeSparseArray(SparseArray)}, 192 * {@link #readSparseArray(ClassLoader)}. 193 */ 194public final class Parcel { 195 private static final boolean DEBUG_RECYCLE = false; 196 private static final boolean DEBUG_ARRAY_MAP = false; 197 private static final String TAG = "Parcel"; 198 199 @SuppressWarnings({"UnusedDeclaration"}) 200 private long mNativePtr; // used by native code 201 202 /** 203 * Flag indicating if {@link #mNativePtr} was allocated by this object, 204 * indicating that we're responsible for its lifecycle. 205 */ 206 private boolean mOwnsNativeParcelObject; 207 private long mNativeSize; 208 209 private RuntimeException mStack; 210 211 private static final int POOL_SIZE = 6; 212 private static final Parcel[] sOwnedPool = new Parcel[POOL_SIZE]; 213 private static final Parcel[] sHolderPool = new Parcel[POOL_SIZE]; 214 215 // Keep in sync with frameworks/native/include/private/binder/ParcelValTypes.h. 216 private static final int VAL_NULL = -1; 217 private static final int VAL_STRING = 0; 218 private static final int VAL_INTEGER = 1; 219 private static final int VAL_MAP = 2; 220 private static final int VAL_BUNDLE = 3; 221 private static final int VAL_PARCELABLE = 4; 222 private static final int VAL_SHORT = 5; 223 private static final int VAL_LONG = 6; 224 private static final int VAL_FLOAT = 7; 225 private static final int VAL_DOUBLE = 8; 226 private static final int VAL_BOOLEAN = 9; 227 private static final int VAL_CHARSEQUENCE = 10; 228 private static final int VAL_LIST = 11; 229 private static final int VAL_SPARSEARRAY = 12; 230 private static final int VAL_BYTEARRAY = 13; 231 private static final int VAL_STRINGARRAY = 14; 232 private static final int VAL_IBINDER = 15; 233 private static final int VAL_PARCELABLEARRAY = 16; 234 private static final int VAL_OBJECTARRAY = 17; 235 private static final int VAL_INTARRAY = 18; 236 private static final int VAL_LONGARRAY = 19; 237 private static final int VAL_BYTE = 20; 238 private static final int VAL_SERIALIZABLE = 21; 239 private static final int VAL_SPARSEBOOLEANARRAY = 22; 240 private static final int VAL_BOOLEANARRAY = 23; 241 private static final int VAL_CHARSEQUENCEARRAY = 24; 242 private static final int VAL_PERSISTABLEBUNDLE = 25; 243 private static final int VAL_SIZE = 26; 244 private static final int VAL_SIZEF = 27; 245 private static final int VAL_DOUBLEARRAY = 28; 246 247 // The initial int32 in a Binder call's reply Parcel header: 248 // Keep these in sync with libbinder's binder/Status.h. 249 private static final int EX_SECURITY = -1; 250 private static final int EX_BAD_PARCELABLE = -2; 251 private static final int EX_ILLEGAL_ARGUMENT = -3; 252 private static final int EX_NULL_POINTER = -4; 253 private static final int EX_ILLEGAL_STATE = -5; 254 private static final int EX_NETWORK_MAIN_THREAD = -6; 255 private static final int EX_UNSUPPORTED_OPERATION = -7; 256 private static final int EX_SERVICE_SPECIFIC = -8; 257 private static final int EX_PARCELABLE = -9; 258 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 259 // EX_TRANSACTION_FAILED is used exclusively in native code. 260 // see libbinder's binder/Status.h 261 private static final int EX_TRANSACTION_FAILED = -129; 262 263 @FastNative 264 private static native int nativeDataSize(long nativePtr); 265 @FastNative 266 private static native int nativeDataAvail(long nativePtr); 267 @FastNative 268 private static native int nativeDataPosition(long nativePtr); 269 @FastNative 270 private static native int nativeDataCapacity(long nativePtr); 271 @FastNative 272 private static native long nativeSetDataSize(long nativePtr, int size); 273 @FastNative 274 private static native void nativeSetDataPosition(long nativePtr, int pos); 275 @FastNative 276 private static native void nativeSetDataCapacity(long nativePtr, int size); 277 278 @FastNative 279 private static native boolean nativePushAllowFds(long nativePtr, boolean allowFds); 280 @FastNative 281 private static native void nativeRestoreAllowFds(long nativePtr, boolean lastValue); 282 283 private static native void nativeWriteByteArray(long nativePtr, byte[] b, int offset, int len); 284 private static native void nativeWriteBlob(long nativePtr, byte[] b, int offset, int len); 285 @FastNative 286 private static native void nativeWriteInt(long nativePtr, int val); 287 @FastNative 288 private static native void nativeWriteLong(long nativePtr, long val); 289 @FastNative 290 private static native void nativeWriteFloat(long nativePtr, float val); 291 @FastNative 292 private static native void nativeWriteDouble(long nativePtr, double val); 293 private static native void nativeWriteString(long nativePtr, String val); 294 private static native void nativeWriteStrongBinder(long nativePtr, IBinder val); 295 private static native long nativeWriteFileDescriptor(long nativePtr, FileDescriptor val); 296 297 private static native byte[] nativeCreateByteArray(long nativePtr); 298 private static native byte[] nativeReadBlob(long nativePtr); 299 @FastNative 300 private static native int nativeReadInt(long nativePtr); 301 @FastNative 302 private static native long nativeReadLong(long nativePtr); 303 @FastNative 304 private static native float nativeReadFloat(long nativePtr); 305 @FastNative 306 private static native double nativeReadDouble(long nativePtr); 307 private static native String nativeReadString(long nativePtr); 308 private static native IBinder nativeReadStrongBinder(long nativePtr); 309 private static native FileDescriptor nativeReadFileDescriptor(long nativePtr); 310 311 private static native long nativeCreate(); 312 private static native long nativeFreeBuffer(long nativePtr); 313 private static native void nativeDestroy(long nativePtr); 314 315 private static native byte[] nativeMarshall(long nativePtr); 316 private static native long nativeUnmarshall( 317 long nativePtr, byte[] data, int offset, int length); 318 private static native long nativeAppendFrom( 319 long thisNativePtr, long otherNativePtr, int offset, int length); 320 @FastNative 321 private static native boolean nativeHasFileDescriptors(long nativePtr); 322 private static native void nativeWriteInterfaceToken(long nativePtr, String interfaceName); 323 private static native void nativeEnforceInterface(long nativePtr, String interfaceName); 324 325 private static native long nativeGetBlobAshmemSize(long nativePtr); 326 327 public final static Parcelable.Creator<String> STRING_CREATOR 328 = new Parcelable.Creator<String>() { 329 public String createFromParcel(Parcel source) { 330 return source.readString(); 331 } 332 public String[] newArray(int size) { 333 return new String[size]; 334 } 335 }; 336 337 /** 338 * Retrieve a new Parcel object from the pool. 339 */ 340 public static Parcel obtain() { 341 final Parcel[] pool = sOwnedPool; 342 synchronized (pool) { 343 Parcel p; 344 for (int i=0; i<POOL_SIZE; i++) { 345 p = pool[i]; 346 if (p != null) { 347 pool[i] = null; 348 if (DEBUG_RECYCLE) { 349 p.mStack = new RuntimeException(); 350 } 351 return p; 352 } 353 } 354 } 355 return new Parcel(0); 356 } 357 358 /** 359 * Put a Parcel object back into the pool. You must not touch 360 * the object after this call. 361 */ 362 public final void recycle() { 363 if (DEBUG_RECYCLE) mStack = null; 364 freeBuffer(); 365 366 final Parcel[] pool; 367 if (mOwnsNativeParcelObject) { 368 pool = sOwnedPool; 369 } else { 370 mNativePtr = 0; 371 pool = sHolderPool; 372 } 373 374 synchronized (pool) { 375 for (int i=0; i<POOL_SIZE; i++) { 376 if (pool[i] == null) { 377 pool[i] = this; 378 return; 379 } 380 } 381 } 382 } 383 384 /** @hide */ 385 public static native long getGlobalAllocSize(); 386 387 /** @hide */ 388 public static native long getGlobalAllocCount(); 389 390 /** 391 * Returns the total amount of data contained in the parcel. 392 */ 393 public final int dataSize() { 394 return nativeDataSize(mNativePtr); 395 } 396 397 /** 398 * Returns the amount of data remaining to be read from the 399 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 400 */ 401 public final int dataAvail() { 402 return nativeDataAvail(mNativePtr); 403 } 404 405 /** 406 * Returns the current position in the parcel data. Never 407 * more than {@link #dataSize}. 408 */ 409 public final int dataPosition() { 410 return nativeDataPosition(mNativePtr); 411 } 412 413 /** 414 * Returns the total amount of space in the parcel. This is always 415 * >= {@link #dataSize}. The difference between it and dataSize() is the 416 * amount of room left until the parcel needs to re-allocate its 417 * data buffer. 418 */ 419 public final int dataCapacity() { 420 return nativeDataCapacity(mNativePtr); 421 } 422 423 /** 424 * Change the amount of data in the parcel. Can be either smaller or 425 * larger than the current size. If larger than the current capacity, 426 * more memory will be allocated. 427 * 428 * @param size The new number of bytes in the Parcel. 429 */ 430 public final void setDataSize(int size) { 431 updateNativeSize(nativeSetDataSize(mNativePtr, size)); 432 } 433 434 /** 435 * Move the current read/write position in the parcel. 436 * @param pos New offset in the parcel; must be between 0 and 437 * {@link #dataSize}. 438 */ 439 public final void setDataPosition(int pos) { 440 nativeSetDataPosition(mNativePtr, pos); 441 } 442 443 /** 444 * Change the capacity (current available space) of the parcel. 445 * 446 * @param size The new capacity of the parcel, in bytes. Can not be 447 * less than {@link #dataSize} -- that is, you can not drop existing data 448 * with this method. 449 */ 450 public final void setDataCapacity(int size) { 451 nativeSetDataCapacity(mNativePtr, size); 452 } 453 454 /** @hide */ 455 public final boolean pushAllowFds(boolean allowFds) { 456 return nativePushAllowFds(mNativePtr, allowFds); 457 } 458 459 /** @hide */ 460 public final void restoreAllowFds(boolean lastValue) { 461 nativeRestoreAllowFds(mNativePtr, lastValue); 462 } 463 464 /** 465 * Returns the raw bytes of the parcel. 466 * 467 * <p class="note">The data you retrieve here <strong>must not</strong> 468 * be placed in any kind of persistent storage (on local disk, across 469 * a network, etc). For that, you should use standard serialization 470 * or another kind of general serialization mechanism. The Parcel 471 * marshalled representation is highly optimized for local IPC, and as 472 * such does not attempt to maintain compatibility with data created 473 * in different versions of the platform. 474 */ 475 public final byte[] marshall() { 476 return nativeMarshall(mNativePtr); 477 } 478 479 /** 480 * Set the bytes in data to be the raw bytes of this Parcel. 481 */ 482 public final void unmarshall(byte[] data, int offset, int length) { 483 updateNativeSize(nativeUnmarshall(mNativePtr, data, offset, length)); 484 } 485 486 public final void appendFrom(Parcel parcel, int offset, int length) { 487 updateNativeSize(nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length)); 488 } 489 490 /** 491 * Report whether the parcel contains any marshalled file descriptors. 492 */ 493 public final boolean hasFileDescriptors() { 494 return nativeHasFileDescriptors(mNativePtr); 495 } 496 497 /** 498 * Store or read an IBinder interface token in the parcel at the current 499 * {@link #dataPosition}. This is used to validate that the marshalled 500 * transaction is intended for the target interface. 501 */ 502 public final void writeInterfaceToken(String interfaceName) { 503 nativeWriteInterfaceToken(mNativePtr, interfaceName); 504 } 505 506 public final void enforceInterface(String interfaceName) { 507 nativeEnforceInterface(mNativePtr, interfaceName); 508 } 509 510 /** 511 * Write a byte array into the parcel at the current {@link #dataPosition}, 512 * growing {@link #dataCapacity} if needed. 513 * @param b Bytes to place into the parcel. 514 */ 515 public final void writeByteArray(byte[] b) { 516 writeByteArray(b, 0, (b != null) ? b.length : 0); 517 } 518 519 /** 520 * Write a byte array into the parcel at the current {@link #dataPosition}, 521 * growing {@link #dataCapacity} if needed. 522 * @param b Bytes to place into the parcel. 523 * @param offset Index of first byte to be written. 524 * @param len Number of bytes to write. 525 */ 526 public final void writeByteArray(byte[] b, int offset, int len) { 527 if (b == null) { 528 writeInt(-1); 529 return; 530 } 531 Arrays.checkOffsetAndCount(b.length, offset, len); 532 nativeWriteByteArray(mNativePtr, b, offset, len); 533 } 534 535 /** 536 * Write a blob of data into the parcel at the current {@link #dataPosition}, 537 * growing {@link #dataCapacity} if needed. 538 * @param b Bytes to place into the parcel. 539 * {@hide} 540 * {@SystemApi} 541 */ 542 public final void writeBlob(byte[] b) { 543 writeBlob(b, 0, (b != null) ? b.length : 0); 544 } 545 546 /** 547 * Write a blob of data into the parcel at the current {@link #dataPosition}, 548 * growing {@link #dataCapacity} if needed. 549 * @param b Bytes to place into the parcel. 550 * @param offset Index of first byte to be written. 551 * @param len Number of bytes to write. 552 * {@hide} 553 * {@SystemApi} 554 */ 555 public final void writeBlob(byte[] b, int offset, int len) { 556 if (b == null) { 557 writeInt(-1); 558 return; 559 } 560 Arrays.checkOffsetAndCount(b.length, offset, len); 561 nativeWriteBlob(mNativePtr, b, offset, len); 562 } 563 564 /** 565 * Write an integer value into the parcel at the current dataPosition(), 566 * growing dataCapacity() if needed. 567 */ 568 public final void writeInt(int val) { 569 nativeWriteInt(mNativePtr, val); 570 } 571 572 /** 573 * Write a long integer value into the parcel at the current dataPosition(), 574 * growing dataCapacity() if needed. 575 */ 576 public final void writeLong(long val) { 577 nativeWriteLong(mNativePtr, val); 578 } 579 580 /** 581 * Write a floating point value into the parcel at the current 582 * dataPosition(), growing dataCapacity() if needed. 583 */ 584 public final void writeFloat(float val) { 585 nativeWriteFloat(mNativePtr, val); 586 } 587 588 /** 589 * Write a double precision floating point value into the parcel at the 590 * current dataPosition(), growing dataCapacity() if needed. 591 */ 592 public final void writeDouble(double val) { 593 nativeWriteDouble(mNativePtr, val); 594 } 595 596 /** 597 * Write a string value into the parcel at the current dataPosition(), 598 * growing dataCapacity() if needed. 599 */ 600 public final void writeString(String val) { 601 nativeWriteString(mNativePtr, val); 602 } 603 604 /** @hide */ 605 public final void writeBoolean(boolean val) { 606 writeInt(val ? 1 : 0); 607 } 608 609 /** 610 * Write a CharSequence value into the parcel at the current dataPosition(), 611 * growing dataCapacity() if needed. 612 * @hide 613 */ 614 public final void writeCharSequence(CharSequence val) { 615 TextUtils.writeToParcel(val, this, 0); 616 } 617 618 /** 619 * Write an object into the parcel at the current dataPosition(), 620 * growing dataCapacity() if needed. 621 */ 622 public final void writeStrongBinder(IBinder val) { 623 nativeWriteStrongBinder(mNativePtr, val); 624 } 625 626 /** 627 * Write an object into the parcel at the current dataPosition(), 628 * growing dataCapacity() if needed. 629 */ 630 public final void writeStrongInterface(IInterface val) { 631 writeStrongBinder(val == null ? null : val.asBinder()); 632 } 633 634 /** 635 * Write a FileDescriptor into the parcel at the current dataPosition(), 636 * growing dataCapacity() if needed. 637 * 638 * <p class="caution">The file descriptor will not be closed, which may 639 * result in file descriptor leaks when objects are returned from Binder 640 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 641 * accepts contextual flags and will close the original file descriptor 642 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 643 */ 644 public final void writeFileDescriptor(FileDescriptor val) { 645 updateNativeSize(nativeWriteFileDescriptor(mNativePtr, val)); 646 } 647 648 private void updateNativeSize(long newNativeSize) { 649 if (mOwnsNativeParcelObject) { 650 if (newNativeSize > Integer.MAX_VALUE) { 651 newNativeSize = Integer.MAX_VALUE; 652 } 653 if (newNativeSize != mNativeSize) { 654 int delta = (int) (newNativeSize - mNativeSize); 655 if (delta > 0) { 656 VMRuntime.getRuntime().registerNativeAllocation(delta); 657 } else { 658 VMRuntime.getRuntime().registerNativeFree(-delta); 659 } 660 mNativeSize = newNativeSize; 661 } 662 } 663 } 664 665 /** 666 * {@hide} 667 * This will be the new name for writeFileDescriptor, for consistency. 668 **/ 669 public final void writeRawFileDescriptor(FileDescriptor val) { 670 nativeWriteFileDescriptor(mNativePtr, val); 671 } 672 673 /** 674 * {@hide} 675 * Write an array of FileDescriptor objects into the Parcel. 676 * 677 * @param value The array of objects to be written. 678 */ 679 public final void writeRawFileDescriptorArray(FileDescriptor[] value) { 680 if (value != null) { 681 int N = value.length; 682 writeInt(N); 683 for (int i=0; i<N; i++) { 684 writeRawFileDescriptor(value[i]); 685 } 686 } else { 687 writeInt(-1); 688 } 689 } 690 691 /** 692 * Write a byte value into the parcel at the current dataPosition(), 693 * growing dataCapacity() if needed. 694 */ 695 public final void writeByte(byte val) { 696 writeInt(val); 697 } 698 699 /** 700 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 701 * at the current dataPosition(), 702 * growing dataCapacity() if needed. The Map keys must be String objects. 703 * The Map values are written using {@link #writeValue} and must follow 704 * the specification there. 705 * 706 * <p>It is strongly recommended to use {@link #writeBundle} instead of 707 * this method, since the Bundle class provides a type-safe API that 708 * allows you to avoid mysterious type errors at the point of marshalling. 709 */ 710 public final void writeMap(Map val) { 711 writeMapInternal((Map<String, Object>) val); 712 } 713 714 /** 715 * Flatten a Map into the parcel at the current dataPosition(), 716 * growing dataCapacity() if needed. The Map keys must be String objects. 717 */ 718 /* package */ void writeMapInternal(Map<String,Object> val) { 719 if (val == null) { 720 writeInt(-1); 721 return; 722 } 723 Set<Map.Entry<String,Object>> entries = val.entrySet(); 724 writeInt(entries.size()); 725 for (Map.Entry<String,Object> e : entries) { 726 writeValue(e.getKey()); 727 writeValue(e.getValue()); 728 } 729 } 730 731 /** 732 * Flatten an ArrayMap into the parcel at the current dataPosition(), 733 * growing dataCapacity() if needed. The Map keys must be String objects. 734 */ 735 /* package */ void writeArrayMapInternal(ArrayMap<String, Object> val) { 736 if (val == null) { 737 writeInt(-1); 738 return; 739 } 740 // Keep the format of this Parcel in sync with writeToParcelInner() in 741 // frameworks/native/libs/binder/PersistableBundle.cpp. 742 final int N = val.size(); 743 writeInt(N); 744 if (DEBUG_ARRAY_MAP) { 745 RuntimeException here = new RuntimeException("here"); 746 here.fillInStackTrace(); 747 Log.d(TAG, "Writing " + N + " ArrayMap entries", here); 748 } 749 int startPos; 750 for (int i=0; i<N; i++) { 751 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 752 writeString(val.keyAt(i)); 753 writeValue(val.valueAt(i)); 754 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Write #" + i + " " 755 + (dataPosition()-startPos) + " bytes: key=0x" 756 + Integer.toHexString(val.keyAt(i) != null ? val.keyAt(i).hashCode() : 0) 757 + " " + val.keyAt(i)); 758 } 759 } 760 761 /** 762 * @hide For testing only. 763 */ 764 public void writeArrayMap(ArrayMap<String, Object> val) { 765 writeArrayMapInternal(val); 766 } 767 768 /** 769 * Write an array set to the parcel. 770 * 771 * @param val The array set to write. 772 * 773 * @hide 774 */ 775 public void writeArraySet(@Nullable ArraySet<? extends Object> val) { 776 final int size = (val != null) ? val.size() : -1; 777 writeInt(size); 778 for (int i = 0; i < size; i++) { 779 writeValue(val.valueAt(i)); 780 } 781 } 782 783 /** 784 * Flatten a Bundle into the parcel at the current dataPosition(), 785 * growing dataCapacity() if needed. 786 */ 787 public final void writeBundle(Bundle val) { 788 if (val == null) { 789 writeInt(-1); 790 return; 791 } 792 793 val.writeToParcel(this, 0); 794 } 795 796 /** 797 * Flatten a PersistableBundle into the parcel at the current dataPosition(), 798 * growing dataCapacity() if needed. 799 */ 800 public final void writePersistableBundle(PersistableBundle val) { 801 if (val == null) { 802 writeInt(-1); 803 return; 804 } 805 806 val.writeToParcel(this, 0); 807 } 808 809 /** 810 * Flatten a Size into the parcel at the current dataPosition(), 811 * growing dataCapacity() if needed. 812 */ 813 public final void writeSize(Size val) { 814 writeInt(val.getWidth()); 815 writeInt(val.getHeight()); 816 } 817 818 /** 819 * Flatten a SizeF into the parcel at the current dataPosition(), 820 * growing dataCapacity() if needed. 821 */ 822 public final void writeSizeF(SizeF val) { 823 writeFloat(val.getWidth()); 824 writeFloat(val.getHeight()); 825 } 826 827 /** 828 * Flatten a List into the parcel at the current dataPosition(), growing 829 * dataCapacity() if needed. The List values are written using 830 * {@link #writeValue} and must follow the specification there. 831 */ 832 public final void writeList(List val) { 833 if (val == null) { 834 writeInt(-1); 835 return; 836 } 837 int N = val.size(); 838 int i=0; 839 writeInt(N); 840 while (i < N) { 841 writeValue(val.get(i)); 842 i++; 843 } 844 } 845 846 /** 847 * Flatten an Object array into the parcel at the current dataPosition(), 848 * growing dataCapacity() if needed. The array values are written using 849 * {@link #writeValue} and must follow the specification there. 850 */ 851 public final void writeArray(Object[] val) { 852 if (val == null) { 853 writeInt(-1); 854 return; 855 } 856 int N = val.length; 857 int i=0; 858 writeInt(N); 859 while (i < N) { 860 writeValue(val[i]); 861 i++; 862 } 863 } 864 865 /** 866 * Flatten a generic SparseArray into the parcel at the current 867 * dataPosition(), growing dataCapacity() if needed. The SparseArray 868 * values are written using {@link #writeValue} and must follow the 869 * specification there. 870 */ 871 public final void writeSparseArray(SparseArray<Object> val) { 872 if (val == null) { 873 writeInt(-1); 874 return; 875 } 876 int N = val.size(); 877 writeInt(N); 878 int i=0; 879 while (i < N) { 880 writeInt(val.keyAt(i)); 881 writeValue(val.valueAt(i)); 882 i++; 883 } 884 } 885 886 public final void writeSparseBooleanArray(SparseBooleanArray val) { 887 if (val == null) { 888 writeInt(-1); 889 return; 890 } 891 int N = val.size(); 892 writeInt(N); 893 int i=0; 894 while (i < N) { 895 writeInt(val.keyAt(i)); 896 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 897 i++; 898 } 899 } 900 901 public final void writeSparseIntArray(SparseIntArray val) { 902 if (val == null) { 903 writeInt(-1); 904 return; 905 } 906 int N = val.size(); 907 writeInt(N); 908 int i=0; 909 while (i < N) { 910 writeInt(val.keyAt(i)); 911 writeInt(val.valueAt(i)); 912 i++; 913 } 914 } 915 916 public final void writeBooleanArray(boolean[] val) { 917 if (val != null) { 918 int N = val.length; 919 writeInt(N); 920 for (int i=0; i<N; i++) { 921 writeInt(val[i] ? 1 : 0); 922 } 923 } else { 924 writeInt(-1); 925 } 926 } 927 928 public final boolean[] createBooleanArray() { 929 int N = readInt(); 930 // >>2 as a fast divide-by-4 works in the create*Array() functions 931 // because dataAvail() will never return a negative number. 4 is 932 // the size of a stored boolean in the stream. 933 if (N >= 0 && N <= (dataAvail() >> 2)) { 934 boolean[] val = new boolean[N]; 935 for (int i=0; i<N; i++) { 936 val[i] = readInt() != 0; 937 } 938 return val; 939 } else { 940 return null; 941 } 942 } 943 944 public final void readBooleanArray(boolean[] val) { 945 int N = readInt(); 946 if (N == val.length) { 947 for (int i=0; i<N; i++) { 948 val[i] = readInt() != 0; 949 } 950 } else { 951 throw new RuntimeException("bad array lengths"); 952 } 953 } 954 955 public final void writeCharArray(char[] val) { 956 if (val != null) { 957 int N = val.length; 958 writeInt(N); 959 for (int i=0; i<N; i++) { 960 writeInt((int)val[i]); 961 } 962 } else { 963 writeInt(-1); 964 } 965 } 966 967 public final char[] createCharArray() { 968 int N = readInt(); 969 if (N >= 0 && N <= (dataAvail() >> 2)) { 970 char[] val = new char[N]; 971 for (int i=0; i<N; i++) { 972 val[i] = (char)readInt(); 973 } 974 return val; 975 } else { 976 return null; 977 } 978 } 979 980 public final void readCharArray(char[] val) { 981 int N = readInt(); 982 if (N == val.length) { 983 for (int i=0; i<N; i++) { 984 val[i] = (char)readInt(); 985 } 986 } else { 987 throw new RuntimeException("bad array lengths"); 988 } 989 } 990 991 public final void writeIntArray(int[] val) { 992 if (val != null) { 993 int N = val.length; 994 writeInt(N); 995 for (int i=0; i<N; i++) { 996 writeInt(val[i]); 997 } 998 } else { 999 writeInt(-1); 1000 } 1001 } 1002 1003 public final int[] createIntArray() { 1004 int N = readInt(); 1005 if (N >= 0 && N <= (dataAvail() >> 2)) { 1006 int[] val = new int[N]; 1007 for (int i=0; i<N; i++) { 1008 val[i] = readInt(); 1009 } 1010 return val; 1011 } else { 1012 return null; 1013 } 1014 } 1015 1016 public final void readIntArray(int[] val) { 1017 int N = readInt(); 1018 if (N == val.length) { 1019 for (int i=0; i<N; i++) { 1020 val[i] = readInt(); 1021 } 1022 } else { 1023 throw new RuntimeException("bad array lengths"); 1024 } 1025 } 1026 1027 public final void writeLongArray(long[] val) { 1028 if (val != null) { 1029 int N = val.length; 1030 writeInt(N); 1031 for (int i=0; i<N; i++) { 1032 writeLong(val[i]); 1033 } 1034 } else { 1035 writeInt(-1); 1036 } 1037 } 1038 1039 public final long[] createLongArray() { 1040 int N = readInt(); 1041 // >>3 because stored longs are 64 bits 1042 if (N >= 0 && N <= (dataAvail() >> 3)) { 1043 long[] val = new long[N]; 1044 for (int i=0; i<N; i++) { 1045 val[i] = readLong(); 1046 } 1047 return val; 1048 } else { 1049 return null; 1050 } 1051 } 1052 1053 public final void readLongArray(long[] val) { 1054 int N = readInt(); 1055 if (N == val.length) { 1056 for (int i=0; i<N; i++) { 1057 val[i] = readLong(); 1058 } 1059 } else { 1060 throw new RuntimeException("bad array lengths"); 1061 } 1062 } 1063 1064 public final void writeFloatArray(float[] val) { 1065 if (val != null) { 1066 int N = val.length; 1067 writeInt(N); 1068 for (int i=0; i<N; i++) { 1069 writeFloat(val[i]); 1070 } 1071 } else { 1072 writeInt(-1); 1073 } 1074 } 1075 1076 public final float[] createFloatArray() { 1077 int N = readInt(); 1078 // >>2 because stored floats are 4 bytes 1079 if (N >= 0 && N <= (dataAvail() >> 2)) { 1080 float[] val = new float[N]; 1081 for (int i=0; i<N; i++) { 1082 val[i] = readFloat(); 1083 } 1084 return val; 1085 } else { 1086 return null; 1087 } 1088 } 1089 1090 public final void readFloatArray(float[] val) { 1091 int N = readInt(); 1092 if (N == val.length) { 1093 for (int i=0; i<N; i++) { 1094 val[i] = readFloat(); 1095 } 1096 } else { 1097 throw new RuntimeException("bad array lengths"); 1098 } 1099 } 1100 1101 public final void writeDoubleArray(double[] val) { 1102 if (val != null) { 1103 int N = val.length; 1104 writeInt(N); 1105 for (int i=0; i<N; i++) { 1106 writeDouble(val[i]); 1107 } 1108 } else { 1109 writeInt(-1); 1110 } 1111 } 1112 1113 public final double[] createDoubleArray() { 1114 int N = readInt(); 1115 // >>3 because stored doubles are 8 bytes 1116 if (N >= 0 && N <= (dataAvail() >> 3)) { 1117 double[] val = new double[N]; 1118 for (int i=0; i<N; i++) { 1119 val[i] = readDouble(); 1120 } 1121 return val; 1122 } else { 1123 return null; 1124 } 1125 } 1126 1127 public final void readDoubleArray(double[] val) { 1128 int N = readInt(); 1129 if (N == val.length) { 1130 for (int i=0; i<N; i++) { 1131 val[i] = readDouble(); 1132 } 1133 } else { 1134 throw new RuntimeException("bad array lengths"); 1135 } 1136 } 1137 1138 public final void writeStringArray(String[] val) { 1139 if (val != null) { 1140 int N = val.length; 1141 writeInt(N); 1142 for (int i=0; i<N; i++) { 1143 writeString(val[i]); 1144 } 1145 } else { 1146 writeInt(-1); 1147 } 1148 } 1149 1150 public final String[] createStringArray() { 1151 int N = readInt(); 1152 if (N >= 0) { 1153 String[] val = new String[N]; 1154 for (int i=0; i<N; i++) { 1155 val[i] = readString(); 1156 } 1157 return val; 1158 } else { 1159 return null; 1160 } 1161 } 1162 1163 public final void readStringArray(String[] val) { 1164 int N = readInt(); 1165 if (N == val.length) { 1166 for (int i=0; i<N; i++) { 1167 val[i] = readString(); 1168 } 1169 } else { 1170 throw new RuntimeException("bad array lengths"); 1171 } 1172 } 1173 1174 public final void writeBinderArray(IBinder[] val) { 1175 if (val != null) { 1176 int N = val.length; 1177 writeInt(N); 1178 for (int i=0; i<N; i++) { 1179 writeStrongBinder(val[i]); 1180 } 1181 } else { 1182 writeInt(-1); 1183 } 1184 } 1185 1186 /** 1187 * @hide 1188 */ 1189 public final void writeCharSequenceArray(CharSequence[] val) { 1190 if (val != null) { 1191 int N = val.length; 1192 writeInt(N); 1193 for (int i=0; i<N; i++) { 1194 writeCharSequence(val[i]); 1195 } 1196 } else { 1197 writeInt(-1); 1198 } 1199 } 1200 1201 /** 1202 * @hide 1203 */ 1204 public final void writeCharSequenceList(ArrayList<CharSequence> val) { 1205 if (val != null) { 1206 int N = val.size(); 1207 writeInt(N); 1208 for (int i=0; i<N; i++) { 1209 writeCharSequence(val.get(i)); 1210 } 1211 } else { 1212 writeInt(-1); 1213 } 1214 } 1215 1216 public final IBinder[] createBinderArray() { 1217 int N = readInt(); 1218 if (N >= 0) { 1219 IBinder[] val = new IBinder[N]; 1220 for (int i=0; i<N; i++) { 1221 val[i] = readStrongBinder(); 1222 } 1223 return val; 1224 } else { 1225 return null; 1226 } 1227 } 1228 1229 public final void readBinderArray(IBinder[] val) { 1230 int N = readInt(); 1231 if (N == val.length) { 1232 for (int i=0; i<N; i++) { 1233 val[i] = readStrongBinder(); 1234 } 1235 } else { 1236 throw new RuntimeException("bad array lengths"); 1237 } 1238 } 1239 1240 /** 1241 * Flatten a List containing a particular object type into the parcel, at 1242 * the current dataPosition() and growing dataCapacity() if needed. The 1243 * type of the objects in the list must be one that implements Parcelable. 1244 * Unlike the generic writeList() method, however, only the raw data of the 1245 * objects is written and not their type, so you must use the corresponding 1246 * readTypedList() to unmarshall them. 1247 * 1248 * @param val The list of objects to be written. 1249 * 1250 * @see #createTypedArrayList 1251 * @see #readTypedList 1252 * @see Parcelable 1253 */ 1254 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1255 if (val == null) { 1256 writeInt(-1); 1257 return; 1258 } 1259 int N = val.size(); 1260 int i=0; 1261 writeInt(N); 1262 while (i < N) { 1263 T item = val.get(i); 1264 if (item != null) { 1265 writeInt(1); 1266 item.writeToParcel(this, 0); 1267 } else { 1268 writeInt(0); 1269 } 1270 i++; 1271 } 1272 } 1273 1274 /** 1275 * Flatten a List containing String objects into the parcel, at 1276 * the current dataPosition() and growing dataCapacity() if needed. They 1277 * can later be retrieved with {@link #createStringArrayList} or 1278 * {@link #readStringList}. 1279 * 1280 * @param val The list of strings to be written. 1281 * 1282 * @see #createStringArrayList 1283 * @see #readStringList 1284 */ 1285 public final void writeStringList(List<String> val) { 1286 if (val == null) { 1287 writeInt(-1); 1288 return; 1289 } 1290 int N = val.size(); 1291 int i=0; 1292 writeInt(N); 1293 while (i < N) { 1294 writeString(val.get(i)); 1295 i++; 1296 } 1297 } 1298 1299 /** 1300 * Flatten a List containing IBinder objects into the parcel, at 1301 * the current dataPosition() and growing dataCapacity() if needed. They 1302 * can later be retrieved with {@link #createBinderArrayList} or 1303 * {@link #readBinderList}. 1304 * 1305 * @param val The list of strings to be written. 1306 * 1307 * @see #createBinderArrayList 1308 * @see #readBinderList 1309 */ 1310 public final void writeBinderList(List<IBinder> val) { 1311 if (val == null) { 1312 writeInt(-1); 1313 return; 1314 } 1315 int N = val.size(); 1316 int i=0; 1317 writeInt(N); 1318 while (i < N) { 1319 writeStrongBinder(val.get(i)); 1320 i++; 1321 } 1322 } 1323 1324 /** 1325 * Flatten a {@code List} containing arbitrary {@code Parcelable} objects into this parcel 1326 * at the current position. They can later be retrieved using 1327 * {@link #readParcelableList(List, ClassLoader)} if required. 1328 * 1329 * @see #readParcelableList(List, ClassLoader) 1330 * @hide 1331 */ 1332 public final <T extends Parcelable> void writeParcelableList(List<T> val, int flags) { 1333 if (val == null) { 1334 writeInt(-1); 1335 return; 1336 } 1337 1338 int N = val.size(); 1339 int i=0; 1340 writeInt(N); 1341 while (i < N) { 1342 writeParcelable(val.get(i), flags); 1343 i++; 1344 } 1345 } 1346 1347 /** 1348 * Flatten a homogeneous array containing a particular object type into 1349 * the parcel, at 1350 * the current dataPosition() and growing dataCapacity() if needed. The 1351 * type of the objects in the array must be one that implements Parcelable. 1352 * Unlike the {@link #writeParcelableArray} method, however, only the 1353 * raw data of the objects is written and not their type, so you must use 1354 * {@link #readTypedArray} with the correct corresponding 1355 * {@link Parcelable.Creator} implementation to unmarshall them. 1356 * 1357 * @param val The array of objects to be written. 1358 * @param parcelableFlags Contextual flags as per 1359 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1360 * 1361 * @see #readTypedArray 1362 * @see #writeParcelableArray 1363 * @see Parcelable.Creator 1364 */ 1365 public final <T extends Parcelable> void writeTypedArray(T[] val, 1366 int parcelableFlags) { 1367 if (val != null) { 1368 int N = val.length; 1369 writeInt(N); 1370 for (int i = 0; i < N; i++) { 1371 T item = val[i]; 1372 if (item != null) { 1373 writeInt(1); 1374 item.writeToParcel(this, parcelableFlags); 1375 } else { 1376 writeInt(0); 1377 } 1378 } 1379 } else { 1380 writeInt(-1); 1381 } 1382 } 1383 1384 /** 1385 * Write a uniform (all items are null or the same class) array list of 1386 * parcelables. 1387 * 1388 * @param list The list to write. 1389 * 1390 * @hide 1391 */ 1392 public final <T extends Parcelable> void writeTypedArrayList(@Nullable ArrayList<T> list, 1393 int parcelableFlags) { 1394 if (list != null) { 1395 int N = list.size(); 1396 writeInt(N); 1397 boolean wroteCreator = false; 1398 for (int i = 0; i < N; i++) { 1399 T item = list.get(i); 1400 if (item != null) { 1401 writeInt(1); 1402 if (!wroteCreator) { 1403 writeParcelableCreator(item); 1404 wroteCreator = true; 1405 } 1406 item.writeToParcel(this, parcelableFlags); 1407 } else { 1408 writeInt(0); 1409 } 1410 } 1411 } else { 1412 writeInt(-1); 1413 } 1414 } 1415 1416 /** 1417 * Reads a uniform (all items are null or the same class) array list of 1418 * parcelables. 1419 * 1420 * @return The list or null. 1421 * 1422 * @hide 1423 */ 1424 public final @Nullable <T> ArrayList<T> readTypedArrayList(@Nullable ClassLoader loader) { 1425 int N = readInt(); 1426 if (N <= 0) { 1427 return null; 1428 } 1429 Parcelable.Creator<?> creator = null; 1430 ArrayList<T> result = new ArrayList<T>(N); 1431 for (int i = 0; i < N; i++) { 1432 if (readInt() != 0) { 1433 if (creator == null) { 1434 creator = readParcelableCreator(loader); 1435 if (creator == null) { 1436 return null; 1437 } 1438 } 1439 final T parcelable; 1440 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 1441 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 1442 (Parcelable.ClassLoaderCreator<?>) creator; 1443 parcelable = (T) classLoaderCreator.createFromParcel(this, loader); 1444 } else { 1445 parcelable = (T) creator.createFromParcel(this); 1446 } 1447 result.add(parcelable); 1448 } else { 1449 result.add(null); 1450 } 1451 } 1452 return result; 1453 } 1454 1455 /** 1456 * Write a uniform (all items are null or the same class) array set of 1457 * parcelables. 1458 * 1459 * @param set The set to write. 1460 * 1461 * @hide 1462 */ 1463 public final <T extends Parcelable> void writeTypedArraySet(@Nullable ArraySet<T> set, 1464 int parcelableFlags) { 1465 if (set != null) { 1466 int N = set.size(); 1467 writeInt(N); 1468 boolean wroteCreator = false; 1469 for (int i = 0; i < N; i++) { 1470 T item = set.valueAt(i); 1471 if (item != null) { 1472 writeInt(1); 1473 if (!wroteCreator) { 1474 writeParcelableCreator(item); 1475 wroteCreator = true; 1476 } 1477 item.writeToParcel(this, parcelableFlags); 1478 } else { 1479 writeInt(0); 1480 } 1481 } 1482 } else { 1483 writeInt(-1); 1484 } 1485 } 1486 1487 /** 1488 * Reads a uniform (all items are null or the same class) array set of 1489 * parcelables. 1490 * 1491 * @return The set or null. 1492 * 1493 * @hide 1494 */ 1495 public final @Nullable <T> ArraySet<T> readTypedArraySet(@Nullable ClassLoader loader) { 1496 int N = readInt(); 1497 if (N <= 0) { 1498 return null; 1499 } 1500 Parcelable.Creator<?> creator = null; 1501 ArraySet<T> result = new ArraySet<T>(N); 1502 for (int i = 0; i < N; i++) { 1503 T parcelable = null; 1504 if (readInt() != 0) { 1505 if (creator == null) { 1506 creator = readParcelableCreator(loader); 1507 if (creator == null) { 1508 return null; 1509 } 1510 } 1511 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 1512 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 1513 (Parcelable.ClassLoaderCreator<?>) creator; 1514 parcelable = (T) classLoaderCreator.createFromParcel(this, loader); 1515 } else { 1516 parcelable = (T) creator.createFromParcel(this); 1517 } 1518 } 1519 result.append(parcelable); 1520 } 1521 return result; 1522 } 1523 1524 /** 1525 * Flatten the Parcelable object into the parcel. 1526 * 1527 * @param val The Parcelable object to be written. 1528 * @param parcelableFlags Contextual flags as per 1529 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1530 * 1531 * @see #readTypedObject 1532 */ 1533 public final <T extends Parcelable> void writeTypedObject(T val, int parcelableFlags) { 1534 if (val != null) { 1535 writeInt(1); 1536 val.writeToParcel(this, parcelableFlags); 1537 } else { 1538 writeInt(0); 1539 } 1540 } 1541 1542 /** 1543 * Flatten a generic object in to a parcel. The given Object value may 1544 * currently be one of the following types: 1545 * 1546 * <ul> 1547 * <li> null 1548 * <li> String 1549 * <li> Byte 1550 * <li> Short 1551 * <li> Integer 1552 * <li> Long 1553 * <li> Float 1554 * <li> Double 1555 * <li> Boolean 1556 * <li> String[] 1557 * <li> boolean[] 1558 * <li> byte[] 1559 * <li> int[] 1560 * <li> long[] 1561 * <li> Object[] (supporting objects of the same type defined here). 1562 * <li> {@link Bundle} 1563 * <li> Map (as supported by {@link #writeMap}). 1564 * <li> Any object that implements the {@link Parcelable} protocol. 1565 * <li> Parcelable[] 1566 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1567 * <li> List (as supported by {@link #writeList}). 1568 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1569 * <li> {@link IBinder} 1570 * <li> Any object that implements Serializable (but see 1571 * {@link #writeSerializable} for caveats). Note that all of the 1572 * previous types have relatively efficient implementations for 1573 * writing to a Parcel; having to rely on the generic serialization 1574 * approach is much less efficient and should be avoided whenever 1575 * possible. 1576 * </ul> 1577 * 1578 * <p class="caution">{@link Parcelable} objects are written with 1579 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1580 * serializing objects containing {@link ParcelFileDescriptor}s, 1581 * this may result in file descriptor leaks when they are returned from 1582 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1583 * should be used).</p> 1584 */ 1585 public final void writeValue(Object v) { 1586 if (v == null) { 1587 writeInt(VAL_NULL); 1588 } else if (v instanceof String) { 1589 writeInt(VAL_STRING); 1590 writeString((String) v); 1591 } else if (v instanceof Integer) { 1592 writeInt(VAL_INTEGER); 1593 writeInt((Integer) v); 1594 } else if (v instanceof Map) { 1595 writeInt(VAL_MAP); 1596 writeMap((Map) v); 1597 } else if (v instanceof Bundle) { 1598 // Must be before Parcelable 1599 writeInt(VAL_BUNDLE); 1600 writeBundle((Bundle) v); 1601 } else if (v instanceof PersistableBundle) { 1602 writeInt(VAL_PERSISTABLEBUNDLE); 1603 writePersistableBundle((PersistableBundle) v); 1604 } else if (v instanceof Parcelable) { 1605 // IMPOTANT: cases for classes that implement Parcelable must 1606 // come before the Parcelable case, so that their specific VAL_* 1607 // types will be written. 1608 writeInt(VAL_PARCELABLE); 1609 writeParcelable((Parcelable) v, 0); 1610 } else if (v instanceof Short) { 1611 writeInt(VAL_SHORT); 1612 writeInt(((Short) v).intValue()); 1613 } else if (v instanceof Long) { 1614 writeInt(VAL_LONG); 1615 writeLong((Long) v); 1616 } else if (v instanceof Float) { 1617 writeInt(VAL_FLOAT); 1618 writeFloat((Float) v); 1619 } else if (v instanceof Double) { 1620 writeInt(VAL_DOUBLE); 1621 writeDouble((Double) v); 1622 } else if (v instanceof Boolean) { 1623 writeInt(VAL_BOOLEAN); 1624 writeInt((Boolean) v ? 1 : 0); 1625 } else if (v instanceof CharSequence) { 1626 // Must be after String 1627 writeInt(VAL_CHARSEQUENCE); 1628 writeCharSequence((CharSequence) v); 1629 } else if (v instanceof List) { 1630 writeInt(VAL_LIST); 1631 writeList((List) v); 1632 } else if (v instanceof SparseArray) { 1633 writeInt(VAL_SPARSEARRAY); 1634 writeSparseArray((SparseArray) v); 1635 } else if (v instanceof boolean[]) { 1636 writeInt(VAL_BOOLEANARRAY); 1637 writeBooleanArray((boolean[]) v); 1638 } else if (v instanceof byte[]) { 1639 writeInt(VAL_BYTEARRAY); 1640 writeByteArray((byte[]) v); 1641 } else if (v instanceof String[]) { 1642 writeInt(VAL_STRINGARRAY); 1643 writeStringArray((String[]) v); 1644 } else if (v instanceof CharSequence[]) { 1645 // Must be after String[] and before Object[] 1646 writeInt(VAL_CHARSEQUENCEARRAY); 1647 writeCharSequenceArray((CharSequence[]) v); 1648 } else if (v instanceof IBinder) { 1649 writeInt(VAL_IBINDER); 1650 writeStrongBinder((IBinder) v); 1651 } else if (v instanceof Parcelable[]) { 1652 writeInt(VAL_PARCELABLEARRAY); 1653 writeParcelableArray((Parcelable[]) v, 0); 1654 } else if (v instanceof int[]) { 1655 writeInt(VAL_INTARRAY); 1656 writeIntArray((int[]) v); 1657 } else if (v instanceof long[]) { 1658 writeInt(VAL_LONGARRAY); 1659 writeLongArray((long[]) v); 1660 } else if (v instanceof Byte) { 1661 writeInt(VAL_BYTE); 1662 writeInt((Byte) v); 1663 } else if (v instanceof Size) { 1664 writeInt(VAL_SIZE); 1665 writeSize((Size) v); 1666 } else if (v instanceof SizeF) { 1667 writeInt(VAL_SIZEF); 1668 writeSizeF((SizeF) v); 1669 } else if (v instanceof double[]) { 1670 writeInt(VAL_DOUBLEARRAY); 1671 writeDoubleArray((double[]) v); 1672 } else { 1673 Class<?> clazz = v.getClass(); 1674 if (clazz.isArray() && clazz.getComponentType() == Object.class) { 1675 // Only pure Object[] are written here, Other arrays of non-primitive types are 1676 // handled by serialization as this does not record the component type. 1677 writeInt(VAL_OBJECTARRAY); 1678 writeArray((Object[]) v); 1679 } else if (v instanceof Serializable) { 1680 // Must be last 1681 writeInt(VAL_SERIALIZABLE); 1682 writeSerializable((Serializable) v); 1683 } else { 1684 throw new RuntimeException("Parcel: unable to marshal value " + v); 1685 } 1686 } 1687 } 1688 1689 /** 1690 * Flatten the name of the class of the Parcelable and its contents 1691 * into the parcel. 1692 * 1693 * @param p The Parcelable object to be written. 1694 * @param parcelableFlags Contextual flags as per 1695 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1696 */ 1697 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1698 if (p == null) { 1699 writeString(null); 1700 return; 1701 } 1702 writeParcelableCreator(p); 1703 p.writeToParcel(this, parcelableFlags); 1704 } 1705 1706 /** @hide */ 1707 public final void writeParcelableCreator(Parcelable p) { 1708 String name = p.getClass().getName(); 1709 writeString(name); 1710 } 1711 1712 /** 1713 * Write a generic serializable object in to a Parcel. It is strongly 1714 * recommended that this method be avoided, since the serialization 1715 * overhead is extremely large, and this approach will be much slower than 1716 * using the other approaches to writing data in to a Parcel. 1717 */ 1718 public final void writeSerializable(Serializable s) { 1719 if (s == null) { 1720 writeString(null); 1721 return; 1722 } 1723 String name = s.getClass().getName(); 1724 writeString(name); 1725 1726 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1727 try { 1728 ObjectOutputStream oos = new ObjectOutputStream(baos); 1729 oos.writeObject(s); 1730 oos.close(); 1731 1732 writeByteArray(baos.toByteArray()); 1733 } catch (IOException ioe) { 1734 throw new RuntimeException("Parcelable encountered " + 1735 "IOException writing serializable object (name = " + name + 1736 ")", ioe); 1737 } 1738 } 1739 1740 /** 1741 * Special function for writing an exception result at the header of 1742 * a parcel, to be used when returning an exception from a transaction. 1743 * Note that this currently only supports a few exception types; any other 1744 * exception will be re-thrown by this function as a RuntimeException 1745 * (to be caught by the system's last-resort exception handling when 1746 * dispatching a transaction). 1747 * 1748 * <p>The supported exception types are: 1749 * <ul> 1750 * <li>{@link BadParcelableException} 1751 * <li>{@link IllegalArgumentException} 1752 * <li>{@link IllegalStateException} 1753 * <li>{@link NullPointerException} 1754 * <li>{@link SecurityException} 1755 * <li>{@link NetworkOnMainThreadException} 1756 * </ul> 1757 * 1758 * @param e The Exception to be written. 1759 * 1760 * @see #writeNoException 1761 * @see #readException 1762 */ 1763 public final void writeException(Exception e) { 1764 int code = 0; 1765 if (e instanceof Parcelable 1766 && (e.getClass().getClassLoader() == Parcelable.class.getClassLoader())) { 1767 // We only send Parcelable exceptions that are in the 1768 // BootClassLoader to ensure that the receiver can unpack them 1769 code = EX_PARCELABLE; 1770 } else if (e instanceof SecurityException) { 1771 code = EX_SECURITY; 1772 } else if (e instanceof BadParcelableException) { 1773 code = EX_BAD_PARCELABLE; 1774 } else if (e instanceof IllegalArgumentException) { 1775 code = EX_ILLEGAL_ARGUMENT; 1776 } else if (e instanceof NullPointerException) { 1777 code = EX_NULL_POINTER; 1778 } else if (e instanceof IllegalStateException) { 1779 code = EX_ILLEGAL_STATE; 1780 } else if (e instanceof NetworkOnMainThreadException) { 1781 code = EX_NETWORK_MAIN_THREAD; 1782 } else if (e instanceof UnsupportedOperationException) { 1783 code = EX_UNSUPPORTED_OPERATION; 1784 } else if (e instanceof ServiceSpecificException) { 1785 code = EX_SERVICE_SPECIFIC; 1786 } 1787 writeInt(code); 1788 StrictMode.clearGatheredViolations(); 1789 if (code == 0) { 1790 if (e instanceof RuntimeException) { 1791 throw (RuntimeException) e; 1792 } 1793 throw new RuntimeException(e); 1794 } 1795 writeString(e.getMessage()); 1796 switch (code) { 1797 case EX_SERVICE_SPECIFIC: 1798 writeInt(((ServiceSpecificException) e).errorCode); 1799 break; 1800 case EX_PARCELABLE: 1801 // Write parceled exception prefixed by length 1802 final int sizePosition = dataPosition(); 1803 writeInt(0); 1804 writeParcelable((Parcelable) e, Parcelable.PARCELABLE_WRITE_RETURN_VALUE); 1805 final int payloadPosition = dataPosition(); 1806 setDataPosition(sizePosition); 1807 writeInt(payloadPosition - sizePosition); 1808 setDataPosition(payloadPosition); 1809 break; 1810 } 1811 } 1812 1813 /** 1814 * Special function for writing information at the front of the Parcel 1815 * indicating that no exception occurred. 1816 * 1817 * @see #writeException 1818 * @see #readException 1819 */ 1820 public final void writeNoException() { 1821 // Despite the name of this function ("write no exception"), 1822 // it should instead be thought of as "write the RPC response 1823 // header", but because this function name is written out by 1824 // the AIDL compiler, we're not going to rename it. 1825 // 1826 // The response header, in the non-exception case (see also 1827 // writeException above, also called by the AIDL compiler), is 1828 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1829 // StrictMode has gathered up violations that have occurred 1830 // during a Binder call, in which case we write out the number 1831 // of violations and their details, serialized, before the 1832 // actual RPC respons data. The receiving end of this is 1833 // readException(), below. 1834 if (StrictMode.hasGatheredViolations()) { 1835 writeInt(EX_HAS_REPLY_HEADER); 1836 final int sizePosition = dataPosition(); 1837 writeInt(0); // total size of fat header, to be filled in later 1838 StrictMode.writeGatheredViolationsToParcel(this); 1839 final int payloadPosition = dataPosition(); 1840 setDataPosition(sizePosition); 1841 writeInt(payloadPosition - sizePosition); // header size 1842 setDataPosition(payloadPosition); 1843 } else { 1844 writeInt(0); 1845 } 1846 } 1847 1848 /** 1849 * Special function for reading an exception result from the header of 1850 * a parcel, to be used after receiving the result of a transaction. This 1851 * will throw the exception for you if it had been written to the Parcel, 1852 * otherwise return and let you read the normal result data from the Parcel. 1853 * 1854 * @see #writeException 1855 * @see #writeNoException 1856 */ 1857 public final void readException() { 1858 int code = readExceptionCode(); 1859 if (code != 0) { 1860 String msg = readString(); 1861 readException(code, msg); 1862 } 1863 } 1864 1865 /** 1866 * Parses the header of a Binder call's response Parcel and 1867 * returns the exception code. Deals with lite or fat headers. 1868 * In the common successful case, this header is generally zero. 1869 * In less common cases, it's a small negative number and will be 1870 * followed by an error string. 1871 * 1872 * This exists purely for android.database.DatabaseUtils and 1873 * insulating it from having to handle fat headers as returned by 1874 * e.g. StrictMode-induced RPC responses. 1875 * 1876 * @hide 1877 */ 1878 public final int readExceptionCode() { 1879 int code = readInt(); 1880 if (code == EX_HAS_REPLY_HEADER) { 1881 int headerSize = readInt(); 1882 if (headerSize == 0) { 1883 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1884 } else { 1885 // Currently the only thing in the header is StrictMode stacks, 1886 // but discussions around event/RPC tracing suggest we might 1887 // put that here too. If so, switch on sub-header tags here. 1888 // But for now, just parse out the StrictMode stuff. 1889 StrictMode.readAndHandleBinderCallViolations(this); 1890 } 1891 // And fat response headers are currently only used when 1892 // there are no exceptions, so return no error: 1893 return 0; 1894 } 1895 return code; 1896 } 1897 1898 /** 1899 * Throw an exception with the given message. Not intended for use 1900 * outside the Parcel class. 1901 * 1902 * @param code Used to determine which exception class to throw. 1903 * @param msg The exception message. 1904 */ 1905 public final void readException(int code, String msg) { 1906 switch (code) { 1907 case EX_PARCELABLE: 1908 if (readInt() > 0) { 1909 SneakyThrow.sneakyThrow( 1910 (Exception) readParcelable(Parcelable.class.getClassLoader())); 1911 } else { 1912 throw new RuntimeException(msg + " [missing Parcelable]"); 1913 } 1914 case EX_SECURITY: 1915 throw new SecurityException(msg); 1916 case EX_BAD_PARCELABLE: 1917 throw new BadParcelableException(msg); 1918 case EX_ILLEGAL_ARGUMENT: 1919 throw new IllegalArgumentException(msg); 1920 case EX_NULL_POINTER: 1921 throw new NullPointerException(msg); 1922 case EX_ILLEGAL_STATE: 1923 throw new IllegalStateException(msg); 1924 case EX_NETWORK_MAIN_THREAD: 1925 throw new NetworkOnMainThreadException(); 1926 case EX_UNSUPPORTED_OPERATION: 1927 throw new UnsupportedOperationException(msg); 1928 case EX_SERVICE_SPECIFIC: 1929 throw new ServiceSpecificException(readInt(), msg); 1930 } 1931 throw new RuntimeException("Unknown exception code: " + code 1932 + " msg " + msg); 1933 } 1934 1935 /** 1936 * Read an integer value from the parcel at the current dataPosition(). 1937 */ 1938 public final int readInt() { 1939 return nativeReadInt(mNativePtr); 1940 } 1941 1942 /** 1943 * Read a long integer value from the parcel at the current dataPosition(). 1944 */ 1945 public final long readLong() { 1946 return nativeReadLong(mNativePtr); 1947 } 1948 1949 /** 1950 * Read a floating point value from the parcel at the current 1951 * dataPosition(). 1952 */ 1953 public final float readFloat() { 1954 return nativeReadFloat(mNativePtr); 1955 } 1956 1957 /** 1958 * Read a double precision floating point value from the parcel at the 1959 * current dataPosition(). 1960 */ 1961 public final double readDouble() { 1962 return nativeReadDouble(mNativePtr); 1963 } 1964 1965 /** 1966 * Read a string value from the parcel at the current dataPosition(). 1967 */ 1968 public final String readString() { 1969 return nativeReadString(mNativePtr); 1970 } 1971 1972 /** @hide */ 1973 public final boolean readBoolean() { 1974 return readInt() != 0; 1975 } 1976 1977 /** 1978 * Read a CharSequence value from the parcel at the current dataPosition(). 1979 * @hide 1980 */ 1981 public final CharSequence readCharSequence() { 1982 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1983 } 1984 1985 /** 1986 * Read an object from the parcel at the current dataPosition(). 1987 */ 1988 public final IBinder readStrongBinder() { 1989 return nativeReadStrongBinder(mNativePtr); 1990 } 1991 1992 /** 1993 * Read a FileDescriptor from the parcel at the current dataPosition(). 1994 */ 1995 public final ParcelFileDescriptor readFileDescriptor() { 1996 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1997 return fd != null ? new ParcelFileDescriptor(fd) : null; 1998 } 1999 2000 /** {@hide} */ 2001 public final FileDescriptor readRawFileDescriptor() { 2002 return nativeReadFileDescriptor(mNativePtr); 2003 } 2004 2005 /** 2006 * {@hide} 2007 * Read and return a new array of FileDescriptors from the parcel. 2008 * @return the FileDescriptor array, or null if the array is null. 2009 **/ 2010 public final FileDescriptor[] createRawFileDescriptorArray() { 2011 int N = readInt(); 2012 if (N < 0) { 2013 return null; 2014 } 2015 FileDescriptor[] f = new FileDescriptor[N]; 2016 for (int i = 0; i < N; i++) { 2017 f[i] = readRawFileDescriptor(); 2018 } 2019 return f; 2020 } 2021 2022 /** 2023 * {@hide} 2024 * Read an array of FileDescriptors from a parcel. 2025 * The passed array must be exactly the length of the array in the parcel. 2026 * @return the FileDescriptor array, or null if the array is null. 2027 **/ 2028 public final void readRawFileDescriptorArray(FileDescriptor[] val) { 2029 int N = readInt(); 2030 if (N == val.length) { 2031 for (int i=0; i<N; i++) { 2032 val[i] = readRawFileDescriptor(); 2033 } 2034 } else { 2035 throw new RuntimeException("bad array lengths"); 2036 } 2037 } 2038 2039 2040 /*package*/ static native FileDescriptor openFileDescriptor(String file, 2041 int mode) throws FileNotFoundException; 2042 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 2043 throws IOException; 2044 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 2045 throws IOException; 2046 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 2047 2048 /** 2049 * Read a byte value from the parcel at the current dataPosition(). 2050 */ 2051 public final byte readByte() { 2052 return (byte)(readInt() & 0xff); 2053 } 2054 2055 /** 2056 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 2057 * been written with {@link #writeBundle}. Read into an existing Map object 2058 * from the parcel at the current dataPosition(). 2059 */ 2060 public final void readMap(Map outVal, ClassLoader loader) { 2061 int N = readInt(); 2062 readMapInternal(outVal, N, loader); 2063 } 2064 2065 /** 2066 * Read into an existing List object from the parcel at the current 2067 * dataPosition(), using the given class loader to load any enclosed 2068 * Parcelables. If it is null, the default class loader is used. 2069 */ 2070 public final void readList(List outVal, ClassLoader loader) { 2071 int N = readInt(); 2072 readListInternal(outVal, N, loader); 2073 } 2074 2075 /** 2076 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 2077 * been written with {@link #writeBundle}. Read and return a new HashMap 2078 * object from the parcel at the current dataPosition(), using the given 2079 * class loader to load any enclosed Parcelables. Returns null if 2080 * the previously written map object was null. 2081 */ 2082 public final HashMap readHashMap(ClassLoader loader) 2083 { 2084 int N = readInt(); 2085 if (N < 0) { 2086 return null; 2087 } 2088 HashMap m = new HashMap(N); 2089 readMapInternal(m, N, loader); 2090 return m; 2091 } 2092 2093 /** 2094 * Read and return a new Bundle object from the parcel at the current 2095 * dataPosition(). Returns null if the previously written Bundle object was 2096 * null. 2097 */ 2098 public final Bundle readBundle() { 2099 return readBundle(null); 2100 } 2101 2102 /** 2103 * Read and return a new Bundle object from the parcel at the current 2104 * dataPosition(), using the given class loader to initialize the class 2105 * loader of the Bundle for later retrieval of Parcelable objects. 2106 * Returns null if the previously written Bundle object was null. 2107 */ 2108 public final Bundle readBundle(ClassLoader loader) { 2109 int length = readInt(); 2110 if (length < 0) { 2111 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 2112 return null; 2113 } 2114 2115 final Bundle bundle = new Bundle(this, length); 2116 if (loader != null) { 2117 bundle.setClassLoader(loader); 2118 } 2119 return bundle; 2120 } 2121 2122 /** 2123 * Read and return a new Bundle object from the parcel at the current 2124 * dataPosition(). Returns null if the previously written Bundle object was 2125 * null. 2126 */ 2127 public final PersistableBundle readPersistableBundle() { 2128 return readPersistableBundle(null); 2129 } 2130 2131 /** 2132 * Read and return a new Bundle object from the parcel at the current 2133 * dataPosition(), using the given class loader to initialize the class 2134 * loader of the Bundle for later retrieval of Parcelable objects. 2135 * Returns null if the previously written Bundle object was null. 2136 */ 2137 public final PersistableBundle readPersistableBundle(ClassLoader loader) { 2138 int length = readInt(); 2139 if (length < 0) { 2140 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 2141 return null; 2142 } 2143 2144 final PersistableBundle bundle = new PersistableBundle(this, length); 2145 if (loader != null) { 2146 bundle.setClassLoader(loader); 2147 } 2148 return bundle; 2149 } 2150 2151 /** 2152 * Read a Size from the parcel at the current dataPosition(). 2153 */ 2154 public final Size readSize() { 2155 final int width = readInt(); 2156 final int height = readInt(); 2157 return new Size(width, height); 2158 } 2159 2160 /** 2161 * Read a SizeF from the parcel at the current dataPosition(). 2162 */ 2163 public final SizeF readSizeF() { 2164 final float width = readFloat(); 2165 final float height = readFloat(); 2166 return new SizeF(width, height); 2167 } 2168 2169 /** 2170 * Read and return a byte[] object from the parcel. 2171 */ 2172 public final byte[] createByteArray() { 2173 return nativeCreateByteArray(mNativePtr); 2174 } 2175 2176 /** 2177 * Read a byte[] object from the parcel and copy it into the 2178 * given byte array. 2179 */ 2180 public final void readByteArray(byte[] val) { 2181 // TODO: make this a native method to avoid the extra copy. 2182 byte[] ba = createByteArray(); 2183 if (ba.length == val.length) { 2184 System.arraycopy(ba, 0, val, 0, ba.length); 2185 } else { 2186 throw new RuntimeException("bad array lengths"); 2187 } 2188 } 2189 2190 /** 2191 * Read a blob of data from the parcel and return it as a byte array. 2192 * {@hide} 2193 * {@SystemApi} 2194 */ 2195 public final byte[] readBlob() { 2196 return nativeReadBlob(mNativePtr); 2197 } 2198 2199 /** 2200 * Read and return a String[] object from the parcel. 2201 * {@hide} 2202 */ 2203 public final String[] readStringArray() { 2204 String[] array = null; 2205 2206 int length = readInt(); 2207 if (length >= 0) 2208 { 2209 array = new String[length]; 2210 2211 for (int i = 0 ; i < length ; i++) 2212 { 2213 array[i] = readString(); 2214 } 2215 } 2216 2217 return array; 2218 } 2219 2220 /** 2221 * Read and return a CharSequence[] object from the parcel. 2222 * {@hide} 2223 */ 2224 public final CharSequence[] readCharSequenceArray() { 2225 CharSequence[] array = null; 2226 2227 int length = readInt(); 2228 if (length >= 0) 2229 { 2230 array = new CharSequence[length]; 2231 2232 for (int i = 0 ; i < length ; i++) 2233 { 2234 array[i] = readCharSequence(); 2235 } 2236 } 2237 2238 return array; 2239 } 2240 2241 /** 2242 * Read and return an ArrayList<CharSequence> object from the parcel. 2243 * {@hide} 2244 */ 2245 public final ArrayList<CharSequence> readCharSequenceList() { 2246 ArrayList<CharSequence> array = null; 2247 2248 int length = readInt(); 2249 if (length >= 0) { 2250 array = new ArrayList<CharSequence>(length); 2251 2252 for (int i = 0 ; i < length ; i++) { 2253 array.add(readCharSequence()); 2254 } 2255 } 2256 2257 return array; 2258 } 2259 2260 /** 2261 * Read and return a new ArrayList object from the parcel at the current 2262 * dataPosition(). Returns null if the previously written list object was 2263 * null. The given class loader will be used to load any enclosed 2264 * Parcelables. 2265 */ 2266 public final ArrayList readArrayList(ClassLoader loader) { 2267 int N = readInt(); 2268 if (N < 0) { 2269 return null; 2270 } 2271 ArrayList l = new ArrayList(N); 2272 readListInternal(l, N, loader); 2273 return l; 2274 } 2275 2276 /** 2277 * Read and return a new Object array from the parcel at the current 2278 * dataPosition(). Returns null if the previously written array was 2279 * null. The given class loader will be used to load any enclosed 2280 * Parcelables. 2281 */ 2282 public final Object[] readArray(ClassLoader loader) { 2283 int N = readInt(); 2284 if (N < 0) { 2285 return null; 2286 } 2287 Object[] l = new Object[N]; 2288 readArrayInternal(l, N, loader); 2289 return l; 2290 } 2291 2292 /** 2293 * Read and return a new SparseArray object from the parcel at the current 2294 * dataPosition(). Returns null if the previously written list object was 2295 * null. The given class loader will be used to load any enclosed 2296 * Parcelables. 2297 */ 2298 public final SparseArray readSparseArray(ClassLoader loader) { 2299 int N = readInt(); 2300 if (N < 0) { 2301 return null; 2302 } 2303 SparseArray sa = new SparseArray(N); 2304 readSparseArrayInternal(sa, N, loader); 2305 return sa; 2306 } 2307 2308 /** 2309 * Read and return a new SparseBooleanArray object from the parcel at the current 2310 * dataPosition(). Returns null if the previously written list object was 2311 * null. 2312 */ 2313 public final SparseBooleanArray readSparseBooleanArray() { 2314 int N = readInt(); 2315 if (N < 0) { 2316 return null; 2317 } 2318 SparseBooleanArray sa = new SparseBooleanArray(N); 2319 readSparseBooleanArrayInternal(sa, N); 2320 return sa; 2321 } 2322 2323 /** 2324 * Read and return a new SparseIntArray object from the parcel at the current 2325 * dataPosition(). Returns null if the previously written array object was null. 2326 */ 2327 public final SparseIntArray readSparseIntArray() { 2328 int N = readInt(); 2329 if (N < 0) { 2330 return null; 2331 } 2332 SparseIntArray sa = new SparseIntArray(N); 2333 readSparseIntArrayInternal(sa, N); 2334 return sa; 2335 } 2336 2337 /** 2338 * Read and return a new ArrayList containing a particular object type from 2339 * the parcel that was written with {@link #writeTypedList} at the 2340 * current dataPosition(). Returns null if the 2341 * previously written list object was null. The list <em>must</em> have 2342 * previously been written via {@link #writeTypedList} with the same object 2343 * type. 2344 * 2345 * @return A newly created ArrayList containing objects with the same data 2346 * as those that were previously written. 2347 * 2348 * @see #writeTypedList 2349 */ 2350 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 2351 int N = readInt(); 2352 if (N < 0) { 2353 return null; 2354 } 2355 ArrayList<T> l = new ArrayList<T>(N); 2356 while (N > 0) { 2357 if (readInt() != 0) { 2358 l.add(c.createFromParcel(this)); 2359 } else { 2360 l.add(null); 2361 } 2362 N--; 2363 } 2364 return l; 2365 } 2366 2367 /** 2368 * Read into the given List items containing a particular object type 2369 * that were written with {@link #writeTypedList} at the 2370 * current dataPosition(). The list <em>must</em> have 2371 * previously been written via {@link #writeTypedList} with the same object 2372 * type. 2373 * 2374 * @return A newly created ArrayList containing objects with the same data 2375 * as those that were previously written. 2376 * 2377 * @see #writeTypedList 2378 */ 2379 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 2380 int M = list.size(); 2381 int N = readInt(); 2382 int i = 0; 2383 for (; i < M && i < N; i++) { 2384 if (readInt() != 0) { 2385 list.set(i, c.createFromParcel(this)); 2386 } else { 2387 list.set(i, null); 2388 } 2389 } 2390 for (; i<N; i++) { 2391 if (readInt() != 0) { 2392 list.add(c.createFromParcel(this)); 2393 } else { 2394 list.add(null); 2395 } 2396 } 2397 for (; i<M; i++) { 2398 list.remove(N); 2399 } 2400 } 2401 2402 /** 2403 * Read and return a new ArrayList containing String objects from 2404 * the parcel that was written with {@link #writeStringList} at the 2405 * current dataPosition(). Returns null if the 2406 * previously written list object was null. 2407 * 2408 * @return A newly created ArrayList containing strings with the same data 2409 * as those that were previously written. 2410 * 2411 * @see #writeStringList 2412 */ 2413 public final ArrayList<String> createStringArrayList() { 2414 int N = readInt(); 2415 if (N < 0) { 2416 return null; 2417 } 2418 ArrayList<String> l = new ArrayList<String>(N); 2419 while (N > 0) { 2420 l.add(readString()); 2421 N--; 2422 } 2423 return l; 2424 } 2425 2426 /** 2427 * Read and return a new ArrayList containing IBinder objects from 2428 * the parcel that was written with {@link #writeBinderList} at the 2429 * current dataPosition(). Returns null if the 2430 * previously written list object was null. 2431 * 2432 * @return A newly created ArrayList containing strings with the same data 2433 * as those that were previously written. 2434 * 2435 * @see #writeBinderList 2436 */ 2437 public final ArrayList<IBinder> createBinderArrayList() { 2438 int N = readInt(); 2439 if (N < 0) { 2440 return null; 2441 } 2442 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 2443 while (N > 0) { 2444 l.add(readStrongBinder()); 2445 N--; 2446 } 2447 return l; 2448 } 2449 2450 /** 2451 * Read into the given List items String objects that were written with 2452 * {@link #writeStringList} at the current dataPosition(). 2453 * 2454 * @return A newly created ArrayList containing strings with the same data 2455 * as those that were previously written. 2456 * 2457 * @see #writeStringList 2458 */ 2459 public final void readStringList(List<String> list) { 2460 int M = list.size(); 2461 int N = readInt(); 2462 int i = 0; 2463 for (; i < M && i < N; i++) { 2464 list.set(i, readString()); 2465 } 2466 for (; i<N; i++) { 2467 list.add(readString()); 2468 } 2469 for (; i<M; i++) { 2470 list.remove(N); 2471 } 2472 } 2473 2474 /** 2475 * Read into the given List items IBinder objects that were written with 2476 * {@link #writeBinderList} at the current dataPosition(). 2477 * 2478 * @see #writeBinderList 2479 */ 2480 public final void readBinderList(List<IBinder> list) { 2481 int M = list.size(); 2482 int N = readInt(); 2483 int i = 0; 2484 for (; i < M && i < N; i++) { 2485 list.set(i, readStrongBinder()); 2486 } 2487 for (; i<N; i++) { 2488 list.add(readStrongBinder()); 2489 } 2490 for (; i<M; i++) { 2491 list.remove(N); 2492 } 2493 } 2494 2495 /** 2496 * Read the list of {@code Parcelable} objects at the current data position into the 2497 * given {@code list}. The contents of the {@code list} are replaced. If the serialized 2498 * list was {@code null}, {@code list} is cleared. 2499 * 2500 * @see #writeParcelableList(List, int) 2501 * @hide 2502 */ 2503 public final <T extends Parcelable> List<T> readParcelableList(List<T> list, ClassLoader cl) { 2504 final int N = readInt(); 2505 if (N == -1) { 2506 list.clear(); 2507 return list; 2508 } 2509 2510 final int M = list.size(); 2511 int i = 0; 2512 for (; i < M && i < N; i++) { 2513 list.set(i, (T) readParcelable(cl)); 2514 } 2515 for (; i<N; i++) { 2516 list.add((T) readParcelable(cl)); 2517 } 2518 for (; i<M; i++) { 2519 list.remove(N); 2520 } 2521 return list; 2522 } 2523 2524 /** 2525 * Read and return a new array containing a particular object type from 2526 * the parcel at the current dataPosition(). Returns null if the 2527 * previously written array was null. The array <em>must</em> have 2528 * previously been written via {@link #writeTypedArray} with the same 2529 * object type. 2530 * 2531 * @return A newly created array containing objects with the same data 2532 * as those that were previously written. 2533 * 2534 * @see #writeTypedArray 2535 */ 2536 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 2537 int N = readInt(); 2538 if (N < 0) { 2539 return null; 2540 } 2541 T[] l = c.newArray(N); 2542 for (int i=0; i<N; i++) { 2543 if (readInt() != 0) { 2544 l[i] = c.createFromParcel(this); 2545 } 2546 } 2547 return l; 2548 } 2549 2550 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 2551 int N = readInt(); 2552 if (N == val.length) { 2553 for (int i=0; i<N; i++) { 2554 if (readInt() != 0) { 2555 val[i] = c.createFromParcel(this); 2556 } else { 2557 val[i] = null; 2558 } 2559 } 2560 } else { 2561 throw new RuntimeException("bad array lengths"); 2562 } 2563 } 2564 2565 /** 2566 * @deprecated 2567 * @hide 2568 */ 2569 @Deprecated 2570 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 2571 return createTypedArray(c); 2572 } 2573 2574 /** 2575 * Read and return a typed Parcelable object from a parcel. 2576 * Returns null if the previous written object was null. 2577 * The object <em>must</em> have previous been written via 2578 * {@link #writeTypedObject} with the same object type. 2579 * 2580 * @return A newly created object of the type that was previously 2581 * written. 2582 * 2583 * @see #writeTypedObject 2584 */ 2585 public final <T> T readTypedObject(Parcelable.Creator<T> c) { 2586 if (readInt() != 0) { 2587 return c.createFromParcel(this); 2588 } else { 2589 return null; 2590 } 2591 } 2592 2593 /** 2594 * Write a heterogeneous array of Parcelable objects into the Parcel. 2595 * Each object in the array is written along with its class name, so 2596 * that the correct class can later be instantiated. As a result, this 2597 * has significantly more overhead than {@link #writeTypedArray}, but will 2598 * correctly handle an array containing more than one type of object. 2599 * 2600 * @param value The array of objects to be written. 2601 * @param parcelableFlags Contextual flags as per 2602 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 2603 * 2604 * @see #writeTypedArray 2605 */ 2606 public final <T extends Parcelable> void writeParcelableArray(T[] value, 2607 int parcelableFlags) { 2608 if (value != null) { 2609 int N = value.length; 2610 writeInt(N); 2611 for (int i=0; i<N; i++) { 2612 writeParcelable(value[i], parcelableFlags); 2613 } 2614 } else { 2615 writeInt(-1); 2616 } 2617 } 2618 2619 /** 2620 * Read a typed object from a parcel. The given class loader will be 2621 * used to load any enclosed Parcelables. If it is null, the default class 2622 * loader will be used. 2623 */ 2624 public final Object readValue(ClassLoader loader) { 2625 int type = readInt(); 2626 2627 switch (type) { 2628 case VAL_NULL: 2629 return null; 2630 2631 case VAL_STRING: 2632 return readString(); 2633 2634 case VAL_INTEGER: 2635 return readInt(); 2636 2637 case VAL_MAP: 2638 return readHashMap(loader); 2639 2640 case VAL_PARCELABLE: 2641 return readParcelable(loader); 2642 2643 case VAL_SHORT: 2644 return (short) readInt(); 2645 2646 case VAL_LONG: 2647 return readLong(); 2648 2649 case VAL_FLOAT: 2650 return readFloat(); 2651 2652 case VAL_DOUBLE: 2653 return readDouble(); 2654 2655 case VAL_BOOLEAN: 2656 return readInt() == 1; 2657 2658 case VAL_CHARSEQUENCE: 2659 return readCharSequence(); 2660 2661 case VAL_LIST: 2662 return readArrayList(loader); 2663 2664 case VAL_BOOLEANARRAY: 2665 return createBooleanArray(); 2666 2667 case VAL_BYTEARRAY: 2668 return createByteArray(); 2669 2670 case VAL_STRINGARRAY: 2671 return readStringArray(); 2672 2673 case VAL_CHARSEQUENCEARRAY: 2674 return readCharSequenceArray(); 2675 2676 case VAL_IBINDER: 2677 return readStrongBinder(); 2678 2679 case VAL_OBJECTARRAY: 2680 return readArray(loader); 2681 2682 case VAL_INTARRAY: 2683 return createIntArray(); 2684 2685 case VAL_LONGARRAY: 2686 return createLongArray(); 2687 2688 case VAL_BYTE: 2689 return readByte(); 2690 2691 case VAL_SERIALIZABLE: 2692 return readSerializable(loader); 2693 2694 case VAL_PARCELABLEARRAY: 2695 return readParcelableArray(loader); 2696 2697 case VAL_SPARSEARRAY: 2698 return readSparseArray(loader); 2699 2700 case VAL_SPARSEBOOLEANARRAY: 2701 return readSparseBooleanArray(); 2702 2703 case VAL_BUNDLE: 2704 return readBundle(loader); // loading will be deferred 2705 2706 case VAL_PERSISTABLEBUNDLE: 2707 return readPersistableBundle(loader); 2708 2709 case VAL_SIZE: 2710 return readSize(); 2711 2712 case VAL_SIZEF: 2713 return readSizeF(); 2714 2715 case VAL_DOUBLEARRAY: 2716 return createDoubleArray(); 2717 2718 default: 2719 int off = dataPosition() - 4; 2720 throw new RuntimeException( 2721 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2722 } 2723 } 2724 2725 /** 2726 * Read and return a new Parcelable from the parcel. The given class loader 2727 * will be used to load any enclosed Parcelables. If it is null, the default 2728 * class loader will be used. 2729 * @param loader A ClassLoader from which to instantiate the Parcelable 2730 * object, or null for the default class loader. 2731 * @return Returns the newly created Parcelable, or null if a null 2732 * object has been written. 2733 * @throws BadParcelableException Throws BadParcelableException if there 2734 * was an error trying to instantiate the Parcelable. 2735 */ 2736 @SuppressWarnings("unchecked") 2737 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2738 Parcelable.Creator<?> creator = readParcelableCreator(loader); 2739 if (creator == null) { 2740 return null; 2741 } 2742 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2743 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2744 (Parcelable.ClassLoaderCreator<?>) creator; 2745 return (T) classLoaderCreator.createFromParcel(this, loader); 2746 } 2747 return (T) creator.createFromParcel(this); 2748 } 2749 2750 /** @hide */ 2751 @SuppressWarnings("unchecked") 2752 public final <T extends Parcelable> T readCreator(Parcelable.Creator<?> creator, 2753 ClassLoader loader) { 2754 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2755 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2756 (Parcelable.ClassLoaderCreator<?>) creator; 2757 return (T) classLoaderCreator.createFromParcel(this, loader); 2758 } 2759 return (T) creator.createFromParcel(this); 2760 } 2761 2762 /** @hide */ 2763 public final Parcelable.Creator<?> readParcelableCreator(ClassLoader loader) { 2764 String name = readString(); 2765 if (name == null) { 2766 return null; 2767 } 2768 Parcelable.Creator<?> creator; 2769 synchronized (mCreators) { 2770 HashMap<String,Parcelable.Creator<?>> map = mCreators.get(loader); 2771 if (map == null) { 2772 map = new HashMap<>(); 2773 mCreators.put(loader, map); 2774 } 2775 creator = map.get(name); 2776 if (creator == null) { 2777 try { 2778 // If loader == null, explicitly emulate Class.forName(String) "caller 2779 // classloader" behavior. 2780 ClassLoader parcelableClassLoader = 2781 (loader == null ? getClass().getClassLoader() : loader); 2782 // Avoid initializing the Parcelable class until we know it implements 2783 // Parcelable and has the necessary CREATOR field. http://b/1171613. 2784 Class<?> parcelableClass = Class.forName(name, false /* initialize */, 2785 parcelableClassLoader); 2786 if (!Parcelable.class.isAssignableFrom(parcelableClass)) { 2787 throw new BadParcelableException("Parcelable protocol requires that the " 2788 + "class implements Parcelable"); 2789 } 2790 Field f = parcelableClass.getField("CREATOR"); 2791 if ((f.getModifiers() & Modifier.STATIC) == 0) { 2792 throw new BadParcelableException("Parcelable protocol requires " 2793 + "the CREATOR object to be static on class " + name); 2794 } 2795 Class<?> creatorType = f.getType(); 2796 if (!Parcelable.Creator.class.isAssignableFrom(creatorType)) { 2797 // Fail before calling Field.get(), not after, to avoid initializing 2798 // parcelableClass unnecessarily. 2799 throw new BadParcelableException("Parcelable protocol requires a " 2800 + "Parcelable.Creator object called " 2801 + "CREATOR on class " + name); 2802 } 2803 creator = (Parcelable.Creator<?>) f.get(null); 2804 } 2805 catch (IllegalAccessException e) { 2806 Log.e(TAG, "Illegal access when unmarshalling: " + name, e); 2807 throw new BadParcelableException( 2808 "IllegalAccessException when unmarshalling: " + name); 2809 } 2810 catch (ClassNotFoundException e) { 2811 Log.e(TAG, "Class not found when unmarshalling: " + name, e); 2812 throw new BadParcelableException( 2813 "ClassNotFoundException when unmarshalling: " + name); 2814 } 2815 catch (NoSuchFieldException e) { 2816 throw new BadParcelableException("Parcelable protocol requires a " 2817 + "Parcelable.Creator object called " 2818 + "CREATOR on class " + name); 2819 } 2820 if (creator == null) { 2821 throw new BadParcelableException("Parcelable protocol requires a " 2822 + "non-null Parcelable.Creator object called " 2823 + "CREATOR on class " + name); 2824 } 2825 2826 map.put(name, creator); 2827 } 2828 } 2829 2830 return creator; 2831 } 2832 2833 /** 2834 * Read and return a new Parcelable array from the parcel. 2835 * The given class loader will be used to load any enclosed 2836 * Parcelables. 2837 * @return the Parcelable array, or null if the array is null 2838 */ 2839 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2840 int N = readInt(); 2841 if (N < 0) { 2842 return null; 2843 } 2844 Parcelable[] p = new Parcelable[N]; 2845 for (int i = 0; i < N; i++) { 2846 p[i] = readParcelable(loader); 2847 } 2848 return p; 2849 } 2850 2851 /** @hide */ 2852 public final <T extends Parcelable> T[] readParcelableArray(ClassLoader loader, 2853 Class<T> clazz) { 2854 int N = readInt(); 2855 if (N < 0) { 2856 return null; 2857 } 2858 T[] p = (T[]) Array.newInstance(clazz, N); 2859 for (int i = 0; i < N; i++) { 2860 p[i] = readParcelable(loader); 2861 } 2862 return p; 2863 } 2864 2865 /** 2866 * Read and return a new Serializable object from the parcel. 2867 * @return the Serializable object, or null if the Serializable name 2868 * wasn't found in the parcel. 2869 */ 2870 public final Serializable readSerializable() { 2871 return readSerializable(null); 2872 } 2873 2874 private final Serializable readSerializable(final ClassLoader loader) { 2875 String name = readString(); 2876 if (name == null) { 2877 // For some reason we were unable to read the name of the Serializable (either there 2878 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2879 // return null, which indicates that the name wasn't found in the parcel. 2880 return null; 2881 } 2882 2883 byte[] serializedData = createByteArray(); 2884 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2885 try { 2886 ObjectInputStream ois = new ObjectInputStream(bais) { 2887 @Override 2888 protected Class<?> resolveClass(ObjectStreamClass osClass) 2889 throws IOException, ClassNotFoundException { 2890 // try the custom classloader if provided 2891 if (loader != null) { 2892 Class<?> c = Class.forName(osClass.getName(), false, loader); 2893 if (c != null) { 2894 return c; 2895 } 2896 } 2897 return super.resolveClass(osClass); 2898 } 2899 }; 2900 return (Serializable) ois.readObject(); 2901 } catch (IOException ioe) { 2902 throw new RuntimeException("Parcelable encountered " + 2903 "IOException reading a Serializable object (name = " + name + 2904 ")", ioe); 2905 } catch (ClassNotFoundException cnfe) { 2906 throw new RuntimeException("Parcelable encountered " + 2907 "ClassNotFoundException reading a Serializable object (name = " 2908 + name + ")", cnfe); 2909 } 2910 } 2911 2912 // Cache of previously looked up CREATOR.createFromParcel() methods for 2913 // particular classes. Keys are the names of the classes, values are 2914 // Method objects. 2915 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator<?>>> 2916 mCreators = new HashMap<>(); 2917 2918 /** @hide for internal use only. */ 2919 static protected final Parcel obtain(int obj) { 2920 throw new UnsupportedOperationException(); 2921 } 2922 2923 /** @hide */ 2924 static protected final Parcel obtain(long obj) { 2925 final Parcel[] pool = sHolderPool; 2926 synchronized (pool) { 2927 Parcel p; 2928 for (int i=0; i<POOL_SIZE; i++) { 2929 p = pool[i]; 2930 if (p != null) { 2931 pool[i] = null; 2932 if (DEBUG_RECYCLE) { 2933 p.mStack = new RuntimeException(); 2934 } 2935 p.init(obj); 2936 return p; 2937 } 2938 } 2939 } 2940 return new Parcel(obj); 2941 } 2942 2943 private Parcel(long nativePtr) { 2944 if (DEBUG_RECYCLE) { 2945 mStack = new RuntimeException(); 2946 } 2947 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2948 init(nativePtr); 2949 } 2950 2951 private void init(long nativePtr) { 2952 if (nativePtr != 0) { 2953 mNativePtr = nativePtr; 2954 mOwnsNativeParcelObject = false; 2955 } else { 2956 mNativePtr = nativeCreate(); 2957 mOwnsNativeParcelObject = true; 2958 } 2959 } 2960 2961 private void freeBuffer() { 2962 if (mOwnsNativeParcelObject) { 2963 updateNativeSize(nativeFreeBuffer(mNativePtr)); 2964 } 2965 } 2966 2967 private void destroy() { 2968 if (mNativePtr != 0) { 2969 if (mOwnsNativeParcelObject) { 2970 nativeDestroy(mNativePtr); 2971 updateNativeSize(0); 2972 } 2973 mNativePtr = 0; 2974 } 2975 } 2976 2977 @Override 2978 protected void finalize() throws Throwable { 2979 if (DEBUG_RECYCLE) { 2980 if (mStack != null) { 2981 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2982 } 2983 } 2984 destroy(); 2985 } 2986 2987 /* package */ void readMapInternal(Map outVal, int N, 2988 ClassLoader loader) { 2989 while (N > 0) { 2990 Object key = readValue(loader); 2991 Object value = readValue(loader); 2992 outVal.put(key, value); 2993 N--; 2994 } 2995 } 2996 2997 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2998 ClassLoader loader) { 2999 if (DEBUG_ARRAY_MAP) { 3000 RuntimeException here = new RuntimeException("here"); 3001 here.fillInStackTrace(); 3002 Log.d(TAG, "Reading " + N + " ArrayMap entries", here); 3003 } 3004 int startPos; 3005 while (N > 0) { 3006 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 3007 String key = readString(); 3008 Object value = readValue(loader); 3009 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read #" + (N-1) + " " 3010 + (dataPosition()-startPos) + " bytes: key=0x" 3011 + Integer.toHexString((key != null ? key.hashCode() : 0)) + " " + key); 3012 outVal.append(key, value); 3013 N--; 3014 } 3015 outVal.validate(); 3016 } 3017 3018 /* package */ void readArrayMapSafelyInternal(ArrayMap outVal, int N, 3019 ClassLoader loader) { 3020 if (DEBUG_ARRAY_MAP) { 3021 RuntimeException here = new RuntimeException("here"); 3022 here.fillInStackTrace(); 3023 Log.d(TAG, "Reading safely " + N + " ArrayMap entries", here); 3024 } 3025 while (N > 0) { 3026 String key = readString(); 3027 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read safe #" + (N-1) + ": key=0x" 3028 + (key != null ? key.hashCode() : 0) + " " + key); 3029 Object value = readValue(loader); 3030 outVal.put(key, value); 3031 N--; 3032 } 3033 } 3034 3035 /** 3036 * @hide For testing only. 3037 */ 3038 public void readArrayMap(ArrayMap outVal, ClassLoader loader) { 3039 final int N = readInt(); 3040 if (N < 0) { 3041 return; 3042 } 3043 readArrayMapInternal(outVal, N, loader); 3044 } 3045 3046 /** 3047 * Reads an array set. 3048 * 3049 * @param loader The class loader to use. 3050 * 3051 * @hide 3052 */ 3053 public @Nullable ArraySet<? extends Object> readArraySet(ClassLoader loader) { 3054 final int size = readInt(); 3055 if (size < 0) { 3056 return null; 3057 } 3058 ArraySet<Object> result = new ArraySet<>(size); 3059 for (int i = 0; i < size; i++) { 3060 Object value = readValue(loader); 3061 result.append(value); 3062 } 3063 return result; 3064 } 3065 3066 private void readListInternal(List outVal, int N, 3067 ClassLoader loader) { 3068 while (N > 0) { 3069 Object value = readValue(loader); 3070 //Log.d(TAG, "Unmarshalling value=" + value); 3071 outVal.add(value); 3072 N--; 3073 } 3074 } 3075 3076 private void readArrayInternal(Object[] outVal, int N, 3077 ClassLoader loader) { 3078 for (int i = 0; i < N; i++) { 3079 Object value = readValue(loader); 3080 //Log.d(TAG, "Unmarshalling value=" + value); 3081 outVal[i] = value; 3082 } 3083 } 3084 3085 private void readSparseArrayInternal(SparseArray outVal, int N, 3086 ClassLoader loader) { 3087 while (N > 0) { 3088 int key = readInt(); 3089 Object value = readValue(loader); 3090 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 3091 outVal.append(key, value); 3092 N--; 3093 } 3094 } 3095 3096 3097 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 3098 while (N > 0) { 3099 int key = readInt(); 3100 boolean value = this.readByte() == 1; 3101 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 3102 outVal.append(key, value); 3103 N--; 3104 } 3105 } 3106 3107 private void readSparseIntArrayInternal(SparseIntArray outVal, int N) { 3108 while (N > 0) { 3109 int key = readInt(); 3110 int value = readInt(); 3111 outVal.append(key, value); 3112 N--; 3113 } 3114 } 3115 3116 /** 3117 * @hide For testing 3118 */ 3119 public long getBlobAshmemSize() { 3120 return nativeGetBlobAshmemSize(mNativePtr); 3121 } 3122} 3123