Parcel.java revision ceafe5ed8a9968752c9454ae67428caf8c6719e6
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.text.TextUtils; 21import android.util.ArrayMap; 22import android.util.Log; 23import android.util.Size; 24import android.util.SizeF; 25import android.util.SparseArray; 26import android.util.SparseBooleanArray; 27 28import java.io.ByteArrayInputStream; 29import java.io.ByteArrayOutputStream; 30import java.io.FileDescriptor; 31import java.io.FileNotFoundException; 32import java.io.IOException; 33import java.io.ObjectInputStream; 34import java.io.ObjectOutputStream; 35import java.io.ObjectStreamClass; 36import java.io.Serializable; 37import java.lang.reflect.Field; 38import java.lang.reflect.Modifier; 39import java.util.ArrayList; 40import java.util.Arrays; 41import java.util.HashMap; 42import java.util.List; 43import java.util.Map; 44import java.util.Set; 45 46import dalvik.system.VMRuntime; 47 48/** 49 * Container for a message (data and object references) that can 50 * be sent through an IBinder. A Parcel can contain both flattened data 51 * that will be unflattened on the other side of the IPC (using the various 52 * methods here for writing specific types, or the general 53 * {@link Parcelable} interface), and references to live {@link IBinder} 54 * objects that will result in the other side receiving a proxy IBinder 55 * connected with the original IBinder in the Parcel. 56 * 57 * <p class="note">Parcel is <strong>not</strong> a general-purpose 58 * serialization mechanism. This class (and the corresponding 59 * {@link Parcelable} API for placing arbitrary objects into a Parcel) is 60 * designed as a high-performance IPC transport. As such, it is not 61 * appropriate to place any Parcel data in to persistent storage: changes 62 * in the underlying implementation of any of the data in the Parcel can 63 * render older data unreadable.</p> 64 * 65 * <p>The bulk of the Parcel API revolves around reading and writing data 66 * of various types. There are six major classes of such functions available.</p> 67 * 68 * <h3>Primitives</h3> 69 * 70 * <p>The most basic data functions are for writing and reading primitive 71 * data types: {@link #writeByte}, {@link #readByte}, {@link #writeDouble}, 72 * {@link #readDouble}, {@link #writeFloat}, {@link #readFloat}, {@link #writeInt}, 73 * {@link #readInt}, {@link #writeLong}, {@link #readLong}, 74 * {@link #writeString}, {@link #readString}. Most other 75 * data operations are built on top of these. The given data is written and 76 * read using the endianess of the host CPU.</p> 77 * 78 * <h3>Primitive Arrays</h3> 79 * 80 * <p>There are a variety of methods for reading and writing raw arrays 81 * of primitive objects, which generally result in writing a 4-byte length 82 * followed by the primitive data items. The methods for reading can either 83 * read the data into an existing array, or create and return a new array. 84 * These available types are:</p> 85 * 86 * <ul> 87 * <li> {@link #writeBooleanArray(boolean[])}, 88 * {@link #readBooleanArray(boolean[])}, {@link #createBooleanArray()} 89 * <li> {@link #writeByteArray(byte[])}, 90 * {@link #writeByteArray(byte[], int, int)}, {@link #readByteArray(byte[])}, 91 * {@link #createByteArray()} 92 * <li> {@link #writeCharArray(char[])}, {@link #readCharArray(char[])}, 93 * {@link #createCharArray()} 94 * <li> {@link #writeDoubleArray(double[])}, {@link #readDoubleArray(double[])}, 95 * {@link #createDoubleArray()} 96 * <li> {@link #writeFloatArray(float[])}, {@link #readFloatArray(float[])}, 97 * {@link #createFloatArray()} 98 * <li> {@link #writeIntArray(int[])}, {@link #readIntArray(int[])}, 99 * {@link #createIntArray()} 100 * <li> {@link #writeLongArray(long[])}, {@link #readLongArray(long[])}, 101 * {@link #createLongArray()} 102 * <li> {@link #writeStringArray(String[])}, {@link #readStringArray(String[])}, 103 * {@link #createStringArray()}. 104 * <li> {@link #writeSparseBooleanArray(SparseBooleanArray)}, 105 * {@link #readSparseBooleanArray()}. 106 * </ul> 107 * 108 * <h3>Parcelables</h3> 109 * 110 * <p>The {@link Parcelable} protocol provides an extremely efficient (but 111 * low-level) protocol for objects to write and read themselves from Parcels. 112 * You can use the direct methods {@link #writeParcelable(Parcelable, int)} 113 * and {@link #readParcelable(ClassLoader)} or 114 * {@link #writeParcelableArray} and 115 * {@link #readParcelableArray(ClassLoader)} to write or read. These 116 * methods write both the class type and its data to the Parcel, allowing 117 * that class to be reconstructed from the appropriate class loader when 118 * later reading.</p> 119 * 120 * <p>There are also some methods that provide a more efficient way to work 121 * with Parcelables: {@link #writeTypedObject}, {@link #writeTypedArray}, 122 * {@link #writeTypedList}, {@link #readTypedObject}, 123 * {@link #createTypedArray} and {@link #createTypedArrayList}. These methods 124 * do not write the class information of the original object: instead, the 125 * caller of the read function must know what type to expect and pass in the 126 * appropriate {@link Parcelable.Creator Parcelable.Creator} instead to 127 * properly construct the new object and read its data. (To more efficient 128 * write and read a single Parceable object that is not null, you can directly 129 * call {@link Parcelable#writeToParcel Parcelable.writeToParcel} and 130 * {@link Parcelable.Creator#createFromParcel Parcelable.Creator.createFromParcel} 131 * yourself.)</p> 132 * 133 * <h3>Bundles</h3> 134 * 135 * <p>A special type-safe container, called {@link Bundle}, is available 136 * for key/value maps of heterogeneous values. This has many optimizations 137 * for improved performance when reading and writing data, and its type-safe 138 * API avoids difficult to debug type errors when finally marshalling the 139 * data contents into a Parcel. The methods to use are 140 * {@link #writeBundle(Bundle)}, {@link #readBundle()}, and 141 * {@link #readBundle(ClassLoader)}. 142 * 143 * <h3>Active Objects</h3> 144 * 145 * <p>An unusual feature of Parcel is the ability to read and write active 146 * objects. For these objects the actual contents of the object is not 147 * written, rather a special token referencing the object is written. When 148 * reading the object back from the Parcel, you do not get a new instance of 149 * the object, but rather a handle that operates on the exact same object that 150 * was originally written. There are two forms of active objects available.</p> 151 * 152 * <p>{@link Binder} objects are a core facility of Android's general cross-process 153 * communication system. The {@link IBinder} interface describes an abstract 154 * protocol with a Binder object. Any such interface can be written in to 155 * a Parcel, and upon reading you will receive either the original object 156 * implementing that interface or a special proxy implementation 157 * that communicates calls back to the original object. The methods to use are 158 * {@link #writeStrongBinder(IBinder)}, 159 * {@link #writeStrongInterface(IInterface)}, {@link #readStrongBinder()}, 160 * {@link #writeBinderArray(IBinder[])}, {@link #readBinderArray(IBinder[])}, 161 * {@link #createBinderArray()}, 162 * {@link #writeBinderList(List)}, {@link #readBinderList(List)}, 163 * {@link #createBinderArrayList()}.</p> 164 * 165 * <p>FileDescriptor objects, representing raw Linux file descriptor identifiers, 166 * can be written and {@link ParcelFileDescriptor} objects returned to operate 167 * on the original file descriptor. The returned file descriptor is a dup 168 * of the original file descriptor: the object and fd is different, but 169 * operating on the same underlying file stream, with the same position, etc. 170 * The methods to use are {@link #writeFileDescriptor(FileDescriptor)}, 171 * {@link #readFileDescriptor()}. 172 * 173 * <h3>Untyped Containers</h3> 174 * 175 * <p>A final class of methods are for writing and reading standard Java 176 * containers of arbitrary types. These all revolve around the 177 * {@link #writeValue(Object)} and {@link #readValue(ClassLoader)} methods 178 * which define the types of objects allowed. The container methods are 179 * {@link #writeArray(Object[])}, {@link #readArray(ClassLoader)}, 180 * {@link #writeList(List)}, {@link #readList(List, ClassLoader)}, 181 * {@link #readArrayList(ClassLoader)}, 182 * {@link #writeMap(Map)}, {@link #readMap(Map, ClassLoader)}, 183 * {@link #writeSparseArray(SparseArray)}, 184 * {@link #readSparseArray(ClassLoader)}. 185 */ 186public final class Parcel { 187 private static final boolean DEBUG_RECYCLE = false; 188 private static final boolean DEBUG_ARRAY_MAP = false; 189 private static final String TAG = "Parcel"; 190 191 @SuppressWarnings({"UnusedDeclaration"}) 192 private long mNativePtr; // used by native code 193 194 /** 195 * Flag indicating if {@link #mNativePtr} was allocated by this object, 196 * indicating that we're responsible for its lifecycle. 197 */ 198 private boolean mOwnsNativeParcelObject; 199 private long mNativeSize; 200 201 private RuntimeException mStack; 202 203 private static final int POOL_SIZE = 6; 204 private static final Parcel[] sOwnedPool = new Parcel[POOL_SIZE]; 205 private static final Parcel[] sHolderPool = new Parcel[POOL_SIZE]; 206 207 private static final int VAL_NULL = -1; 208 private static final int VAL_STRING = 0; 209 private static final int VAL_INTEGER = 1; 210 private static final int VAL_MAP = 2; 211 private static final int VAL_BUNDLE = 3; 212 private static final int VAL_PARCELABLE = 4; 213 private static final int VAL_SHORT = 5; 214 private static final int VAL_LONG = 6; 215 private static final int VAL_FLOAT = 7; 216 private static final int VAL_DOUBLE = 8; 217 private static final int VAL_BOOLEAN = 9; 218 private static final int VAL_CHARSEQUENCE = 10; 219 private static final int VAL_LIST = 11; 220 private static final int VAL_SPARSEARRAY = 12; 221 private static final int VAL_BYTEARRAY = 13; 222 private static final int VAL_STRINGARRAY = 14; 223 private static final int VAL_IBINDER = 15; 224 private static final int VAL_PARCELABLEARRAY = 16; 225 private static final int VAL_OBJECTARRAY = 17; 226 private static final int VAL_INTARRAY = 18; 227 private static final int VAL_LONGARRAY = 19; 228 private static final int VAL_BYTE = 20; 229 private static final int VAL_SERIALIZABLE = 21; 230 private static final int VAL_SPARSEBOOLEANARRAY = 22; 231 private static final int VAL_BOOLEANARRAY = 23; 232 private static final int VAL_CHARSEQUENCEARRAY = 24; 233 private static final int VAL_PERSISTABLEBUNDLE = 25; 234 private static final int VAL_SIZE = 26; 235 private static final int VAL_SIZEF = 27; 236 private static final int VAL_DOUBLEARRAY = 28; 237 238 // The initial int32 in a Binder call's reply Parcel header: 239 // Keep these in sync with libbinder's binder/Status.h. 240 private static final int EX_SECURITY = -1; 241 private static final int EX_BAD_PARCELABLE = -2; 242 private static final int EX_ILLEGAL_ARGUMENT = -3; 243 private static final int EX_NULL_POINTER = -4; 244 private static final int EX_ILLEGAL_STATE = -5; 245 private static final int EX_NETWORK_MAIN_THREAD = -6; 246 private static final int EX_UNSUPPORTED_OPERATION = -7; 247 private static final int EX_SERVICE_SPECIFIC = -8; 248 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 249 // EX_TRANSACTION_FAILED is used exclusively in native code. 250 // see libbinder's binder/Status.h 251 private static final int EX_TRANSACTION_FAILED = -129; 252 253 private static native int nativeDataSize(long nativePtr); 254 private static native int nativeDataAvail(long nativePtr); 255 private static native int nativeDataPosition(long nativePtr); 256 private static native int nativeDataCapacity(long nativePtr); 257 private static native long nativeSetDataSize(long nativePtr, int size); 258 private static native void nativeSetDataPosition(long nativePtr, int pos); 259 private static native void nativeSetDataCapacity(long nativePtr, int size); 260 261 private static native boolean nativePushAllowFds(long nativePtr, boolean allowFds); 262 private static native void nativeRestoreAllowFds(long nativePtr, boolean lastValue); 263 264 private static native void nativeWriteByteArray(long nativePtr, byte[] b, int offset, int len); 265 private static native void nativeWriteBlob(long nativePtr, byte[] b, int offset, int len); 266 private static native void nativeWriteInt(long nativePtr, int val); 267 private static native void nativeWriteLong(long nativePtr, long val); 268 private static native void nativeWriteFloat(long nativePtr, float val); 269 private static native void nativeWriteDouble(long nativePtr, double val); 270 private static native void nativeWriteString(long nativePtr, String val); 271 private static native void nativeWriteStrongBinder(long nativePtr, IBinder val); 272 private static native long nativeWriteFileDescriptor(long nativePtr, FileDescriptor val); 273 274 private static native byte[] nativeCreateByteArray(long nativePtr); 275 private static native byte[] nativeReadBlob(long nativePtr); 276 private static native int nativeReadInt(long nativePtr); 277 private static native long nativeReadLong(long nativePtr); 278 private static native float nativeReadFloat(long nativePtr); 279 private static native double nativeReadDouble(long nativePtr); 280 private static native String nativeReadString(long nativePtr); 281 private static native IBinder nativeReadStrongBinder(long nativePtr); 282 private static native FileDescriptor nativeReadFileDescriptor(long nativePtr); 283 284 private static native long nativeCreate(); 285 private static native long nativeFreeBuffer(long nativePtr); 286 private static native void nativeDestroy(long nativePtr); 287 288 private static native byte[] nativeMarshall(long nativePtr); 289 private static native long nativeUnmarshall( 290 long nativePtr, byte[] data, int offset, int length); 291 private static native long nativeAppendFrom( 292 long thisNativePtr, long otherNativePtr, int offset, int length); 293 private static native boolean nativeHasFileDescriptors(long nativePtr); 294 private static native void nativeWriteInterfaceToken(long nativePtr, String interfaceName); 295 private static native void nativeEnforceInterface(long nativePtr, String interfaceName); 296 297 private static native long nativeGetBlobAshmemSize(long nativePtr); 298 299 public final static Parcelable.Creator<String> STRING_CREATOR 300 = new Parcelable.Creator<String>() { 301 public String createFromParcel(Parcel source) { 302 return source.readString(); 303 } 304 public String[] newArray(int size) { 305 return new String[size]; 306 } 307 }; 308 309 /** 310 * Retrieve a new Parcel object from the pool. 311 */ 312 public static Parcel obtain() { 313 final Parcel[] pool = sOwnedPool; 314 synchronized (pool) { 315 Parcel p; 316 for (int i=0; i<POOL_SIZE; i++) { 317 p = pool[i]; 318 if (p != null) { 319 pool[i] = null; 320 if (DEBUG_RECYCLE) { 321 p.mStack = new RuntimeException(); 322 } 323 return p; 324 } 325 } 326 } 327 return new Parcel(0); 328 } 329 330 /** 331 * Put a Parcel object back into the pool. You must not touch 332 * the object after this call. 333 */ 334 public final void recycle() { 335 if (DEBUG_RECYCLE) mStack = null; 336 freeBuffer(); 337 338 final Parcel[] pool; 339 if (mOwnsNativeParcelObject) { 340 pool = sOwnedPool; 341 } else { 342 mNativePtr = 0; 343 pool = sHolderPool; 344 } 345 346 synchronized (pool) { 347 for (int i=0; i<POOL_SIZE; i++) { 348 if (pool[i] == null) { 349 pool[i] = this; 350 return; 351 } 352 } 353 } 354 } 355 356 /** @hide */ 357 public static native long getGlobalAllocSize(); 358 359 /** @hide */ 360 public static native long getGlobalAllocCount(); 361 362 /** 363 * Returns the total amount of data contained in the parcel. 364 */ 365 public final int dataSize() { 366 return nativeDataSize(mNativePtr); 367 } 368 369 /** 370 * Returns the amount of data remaining to be read from the 371 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 372 */ 373 public final int dataAvail() { 374 return nativeDataAvail(mNativePtr); 375 } 376 377 /** 378 * Returns the current position in the parcel data. Never 379 * more than {@link #dataSize}. 380 */ 381 public final int dataPosition() { 382 return nativeDataPosition(mNativePtr); 383 } 384 385 /** 386 * Returns the total amount of space in the parcel. This is always 387 * >= {@link #dataSize}. The difference between it and dataSize() is the 388 * amount of room left until the parcel needs to re-allocate its 389 * data buffer. 390 */ 391 public final int dataCapacity() { 392 return nativeDataCapacity(mNativePtr); 393 } 394 395 /** 396 * Change the amount of data in the parcel. Can be either smaller or 397 * larger than the current size. If larger than the current capacity, 398 * more memory will be allocated. 399 * 400 * @param size The new number of bytes in the Parcel. 401 */ 402 public final void setDataSize(int size) { 403 updateNativeSize(nativeSetDataSize(mNativePtr, size)); 404 } 405 406 /** 407 * Move the current read/write position in the parcel. 408 * @param pos New offset in the parcel; must be between 0 and 409 * {@link #dataSize}. 410 */ 411 public final void setDataPosition(int pos) { 412 nativeSetDataPosition(mNativePtr, pos); 413 } 414 415 /** 416 * Change the capacity (current available space) of the parcel. 417 * 418 * @param size The new capacity of the parcel, in bytes. Can not be 419 * less than {@link #dataSize} -- that is, you can not drop existing data 420 * with this method. 421 */ 422 public final void setDataCapacity(int size) { 423 nativeSetDataCapacity(mNativePtr, size); 424 } 425 426 /** @hide */ 427 public final boolean pushAllowFds(boolean allowFds) { 428 return nativePushAllowFds(mNativePtr, allowFds); 429 } 430 431 /** @hide */ 432 public final void restoreAllowFds(boolean lastValue) { 433 nativeRestoreAllowFds(mNativePtr, lastValue); 434 } 435 436 /** 437 * Returns the raw bytes of the parcel. 438 * 439 * <p class="note">The data you retrieve here <strong>must not</strong> 440 * be placed in any kind of persistent storage (on local disk, across 441 * a network, etc). For that, you should use standard serialization 442 * or another kind of general serialization mechanism. The Parcel 443 * marshalled representation is highly optimized for local IPC, and as 444 * such does not attempt to maintain compatibility with data created 445 * in different versions of the platform. 446 */ 447 public final byte[] marshall() { 448 return nativeMarshall(mNativePtr); 449 } 450 451 /** 452 * Set the bytes in data to be the raw bytes of this Parcel. 453 */ 454 public final void unmarshall(byte[] data, int offset, int length) { 455 updateNativeSize(nativeUnmarshall(mNativePtr, data, offset, length)); 456 } 457 458 public final void appendFrom(Parcel parcel, int offset, int length) { 459 updateNativeSize(nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length)); 460 } 461 462 /** 463 * Report whether the parcel contains any marshalled file descriptors. 464 */ 465 public final boolean hasFileDescriptors() { 466 return nativeHasFileDescriptors(mNativePtr); 467 } 468 469 /** 470 * Store or read an IBinder interface token in the parcel at the current 471 * {@link #dataPosition}. This is used to validate that the marshalled 472 * transaction is intended for the target interface. 473 */ 474 public final void writeInterfaceToken(String interfaceName) { 475 nativeWriteInterfaceToken(mNativePtr, interfaceName); 476 } 477 478 public final void enforceInterface(String interfaceName) { 479 nativeEnforceInterface(mNativePtr, interfaceName); 480 } 481 482 /** 483 * Write a byte array into the parcel at the current {@link #dataPosition}, 484 * growing {@link #dataCapacity} if needed. 485 * @param b Bytes to place into the parcel. 486 */ 487 public final void writeByteArray(byte[] b) { 488 writeByteArray(b, 0, (b != null) ? b.length : 0); 489 } 490 491 /** 492 * Write a byte array into the parcel at the current {@link #dataPosition}, 493 * growing {@link #dataCapacity} if needed. 494 * @param b Bytes to place into the parcel. 495 * @param offset Index of first byte to be written. 496 * @param len Number of bytes to write. 497 */ 498 public final void writeByteArray(byte[] b, int offset, int len) { 499 if (b == null) { 500 writeInt(-1); 501 return; 502 } 503 Arrays.checkOffsetAndCount(b.length, offset, len); 504 nativeWriteByteArray(mNativePtr, b, offset, len); 505 } 506 507 /** 508 * Write a blob of data into the parcel at the current {@link #dataPosition}, 509 * growing {@link #dataCapacity} if needed. 510 * @param b Bytes to place into the parcel. 511 * {@hide} 512 * {@SystemApi} 513 */ 514 public final void writeBlob(byte[] b) { 515 writeBlob(b, 0, (b != null) ? b.length : 0); 516 } 517 518 /** 519 * Write a blob of data into the parcel at the current {@link #dataPosition}, 520 * growing {@link #dataCapacity} if needed. 521 * @param b Bytes to place into the parcel. 522 * @param offset Index of first byte to be written. 523 * @param len Number of bytes to write. 524 * {@hide} 525 * {@SystemApi} 526 */ 527 public final void writeBlob(byte[] b, int offset, int len) { 528 if (b == null) { 529 writeInt(-1); 530 return; 531 } 532 Arrays.checkOffsetAndCount(b.length, offset, len); 533 nativeWriteBlob(mNativePtr, b, offset, len); 534 } 535 536 /** 537 * Write an integer value into the parcel at the current dataPosition(), 538 * growing dataCapacity() if needed. 539 */ 540 public final void writeInt(int val) { 541 nativeWriteInt(mNativePtr, val); 542 } 543 544 /** 545 * Write a long integer value into the parcel at the current dataPosition(), 546 * growing dataCapacity() if needed. 547 */ 548 public final void writeLong(long val) { 549 nativeWriteLong(mNativePtr, val); 550 } 551 552 /** 553 * Write a floating point value into the parcel at the current 554 * dataPosition(), growing dataCapacity() if needed. 555 */ 556 public final void writeFloat(float val) { 557 nativeWriteFloat(mNativePtr, val); 558 } 559 560 /** 561 * Write a double precision floating point value into the parcel at the 562 * current dataPosition(), growing dataCapacity() if needed. 563 */ 564 public final void writeDouble(double val) { 565 nativeWriteDouble(mNativePtr, val); 566 } 567 568 /** 569 * Write a string value into the parcel at the current dataPosition(), 570 * growing dataCapacity() if needed. 571 */ 572 public final void writeString(String val) { 573 nativeWriteString(mNativePtr, val); 574 } 575 576 /** 577 * Write a CharSequence value into the parcel at the current dataPosition(), 578 * growing dataCapacity() if needed. 579 * @hide 580 */ 581 public final void writeCharSequence(CharSequence val) { 582 TextUtils.writeToParcel(val, this, 0); 583 } 584 585 /** 586 * Write an object into the parcel at the current dataPosition(), 587 * growing dataCapacity() if needed. 588 */ 589 public final void writeStrongBinder(IBinder val) { 590 nativeWriteStrongBinder(mNativePtr, val); 591 } 592 593 /** 594 * Write an object into the parcel at the current dataPosition(), 595 * growing dataCapacity() if needed. 596 */ 597 public final void writeStrongInterface(IInterface val) { 598 writeStrongBinder(val == null ? null : val.asBinder()); 599 } 600 601 /** 602 * Write a FileDescriptor into the parcel at the current dataPosition(), 603 * growing dataCapacity() if needed. 604 * 605 * <p class="caution">The file descriptor will not be closed, which may 606 * result in file descriptor leaks when objects are returned from Binder 607 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 608 * accepts contextual flags and will close the original file descriptor 609 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 610 */ 611 public final void writeFileDescriptor(FileDescriptor val) { 612 updateNativeSize(nativeWriteFileDescriptor(mNativePtr, val)); 613 } 614 615 private void updateNativeSize(long newNativeSize) { 616 if (mOwnsNativeParcelObject) { 617 if (newNativeSize > Integer.MAX_VALUE) { 618 newNativeSize = Integer.MAX_VALUE; 619 } 620 if (newNativeSize != mNativeSize) { 621 int delta = (int) (newNativeSize - mNativeSize); 622 if (delta > 0) { 623 VMRuntime.getRuntime().registerNativeAllocation(delta); 624 } else { 625 VMRuntime.getRuntime().registerNativeFree(-delta); 626 } 627 mNativeSize = newNativeSize; 628 } 629 } 630 } 631 632 /** 633 * {@hide} 634 * This will be the new name for writeFileDescriptor, for consistency. 635 **/ 636 public final void writeRawFileDescriptor(FileDescriptor val) { 637 nativeWriteFileDescriptor(mNativePtr, val); 638 } 639 640 /** 641 * {@hide} 642 * Write an array of FileDescriptor objects into the Parcel. 643 * 644 * @param value The array of objects to be written. 645 */ 646 public final void writeRawFileDescriptorArray(FileDescriptor[] value) { 647 if (value != null) { 648 int N = value.length; 649 writeInt(N); 650 for (int i=0; i<N; i++) { 651 writeRawFileDescriptor(value[i]); 652 } 653 } else { 654 writeInt(-1); 655 } 656 } 657 658 /** 659 * Write a byte value into the parcel at the current dataPosition(), 660 * growing dataCapacity() if needed. 661 */ 662 public final void writeByte(byte val) { 663 writeInt(val); 664 } 665 666 /** 667 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 668 * at the current dataPosition(), 669 * growing dataCapacity() if needed. The Map keys must be String objects. 670 * The Map values are written using {@link #writeValue} and must follow 671 * the specification there. 672 * 673 * <p>It is strongly recommended to use {@link #writeBundle} instead of 674 * this method, since the Bundle class provides a type-safe API that 675 * allows you to avoid mysterious type errors at the point of marshalling. 676 */ 677 public final void writeMap(Map val) { 678 writeMapInternal((Map<String, Object>) val); 679 } 680 681 /** 682 * Flatten a Map into the parcel at the current dataPosition(), 683 * growing dataCapacity() if needed. The Map keys must be String objects. 684 */ 685 /* package */ void writeMapInternal(Map<String,Object> val) { 686 if (val == null) { 687 writeInt(-1); 688 return; 689 } 690 Set<Map.Entry<String,Object>> entries = val.entrySet(); 691 writeInt(entries.size()); 692 for (Map.Entry<String,Object> e : entries) { 693 writeValue(e.getKey()); 694 writeValue(e.getValue()); 695 } 696 } 697 698 /** 699 * Flatten an ArrayMap into the parcel at the current dataPosition(), 700 * growing dataCapacity() if needed. The Map keys must be String objects. 701 */ 702 /* package */ void writeArrayMapInternal(ArrayMap<String, Object> val) { 703 if (val == null) { 704 writeInt(-1); 705 return; 706 } 707 final int N = val.size(); 708 writeInt(N); 709 if (DEBUG_ARRAY_MAP) { 710 RuntimeException here = new RuntimeException("here"); 711 here.fillInStackTrace(); 712 Log.d(TAG, "Writing " + N + " ArrayMap entries", here); 713 } 714 int startPos; 715 for (int i=0; i<N; i++) { 716 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 717 writeString(val.keyAt(i)); 718 writeValue(val.valueAt(i)); 719 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Write #" + i + " " 720 + (dataPosition()-startPos) + " bytes: key=0x" 721 + Integer.toHexString(val.keyAt(i) != null ? val.keyAt(i).hashCode() : 0) 722 + " " + val.keyAt(i)); 723 } 724 } 725 726 /** 727 * @hide For testing only. 728 */ 729 public void writeArrayMap(ArrayMap<String, Object> val) { 730 writeArrayMapInternal(val); 731 } 732 733 /** 734 * Flatten a Bundle into the parcel at the current dataPosition(), 735 * growing dataCapacity() if needed. 736 */ 737 public final void writeBundle(Bundle val) { 738 if (val == null) { 739 writeInt(-1); 740 return; 741 } 742 743 val.writeToParcel(this, 0); 744 } 745 746 /** 747 * Flatten a PersistableBundle into the parcel at the current dataPosition(), 748 * growing dataCapacity() if needed. 749 */ 750 public final void writePersistableBundle(PersistableBundle val) { 751 if (val == null) { 752 writeInt(-1); 753 return; 754 } 755 756 val.writeToParcel(this, 0); 757 } 758 759 /** 760 * Flatten a Size into the parcel at the current dataPosition(), 761 * growing dataCapacity() if needed. 762 */ 763 public final void writeSize(Size val) { 764 writeInt(val.getWidth()); 765 writeInt(val.getHeight()); 766 } 767 768 /** 769 * Flatten a SizeF into the parcel at the current dataPosition(), 770 * growing dataCapacity() if needed. 771 */ 772 public final void writeSizeF(SizeF val) { 773 writeFloat(val.getWidth()); 774 writeFloat(val.getHeight()); 775 } 776 777 /** 778 * Flatten a List into the parcel at the current dataPosition(), growing 779 * dataCapacity() if needed. The List values are written using 780 * {@link #writeValue} and must follow the specification there. 781 */ 782 public final void writeList(List val) { 783 if (val == null) { 784 writeInt(-1); 785 return; 786 } 787 int N = val.size(); 788 int i=0; 789 writeInt(N); 790 while (i < N) { 791 writeValue(val.get(i)); 792 i++; 793 } 794 } 795 796 /** 797 * Flatten an Object array into the parcel at the current dataPosition(), 798 * growing dataCapacity() if needed. The array values are written using 799 * {@link #writeValue} and must follow the specification there. 800 */ 801 public final void writeArray(Object[] val) { 802 if (val == null) { 803 writeInt(-1); 804 return; 805 } 806 int N = val.length; 807 int i=0; 808 writeInt(N); 809 while (i < N) { 810 writeValue(val[i]); 811 i++; 812 } 813 } 814 815 /** 816 * Flatten a generic SparseArray into the parcel at the current 817 * dataPosition(), growing dataCapacity() if needed. The SparseArray 818 * values are written using {@link #writeValue} and must follow the 819 * specification there. 820 */ 821 public final void writeSparseArray(SparseArray<Object> val) { 822 if (val == null) { 823 writeInt(-1); 824 return; 825 } 826 int N = val.size(); 827 writeInt(N); 828 int i=0; 829 while (i < N) { 830 writeInt(val.keyAt(i)); 831 writeValue(val.valueAt(i)); 832 i++; 833 } 834 } 835 836 public final void writeSparseBooleanArray(SparseBooleanArray val) { 837 if (val == null) { 838 writeInt(-1); 839 return; 840 } 841 int N = val.size(); 842 writeInt(N); 843 int i=0; 844 while (i < N) { 845 writeInt(val.keyAt(i)); 846 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 847 i++; 848 } 849 } 850 851 public final void writeBooleanArray(boolean[] val) { 852 if (val != null) { 853 int N = val.length; 854 writeInt(N); 855 for (int i=0; i<N; i++) { 856 writeInt(val[i] ? 1 : 0); 857 } 858 } else { 859 writeInt(-1); 860 } 861 } 862 863 public final boolean[] createBooleanArray() { 864 int N = readInt(); 865 // >>2 as a fast divide-by-4 works in the create*Array() functions 866 // because dataAvail() will never return a negative number. 4 is 867 // the size of a stored boolean in the stream. 868 if (N >= 0 && N <= (dataAvail() >> 2)) { 869 boolean[] val = new boolean[N]; 870 for (int i=0; i<N; i++) { 871 val[i] = readInt() != 0; 872 } 873 return val; 874 } else { 875 return null; 876 } 877 } 878 879 public final void readBooleanArray(boolean[] val) { 880 int N = readInt(); 881 if (N == val.length) { 882 for (int i=0; i<N; i++) { 883 val[i] = readInt() != 0; 884 } 885 } else { 886 throw new RuntimeException("bad array lengths"); 887 } 888 } 889 890 public final void writeCharArray(char[] val) { 891 if (val != null) { 892 int N = val.length; 893 writeInt(N); 894 for (int i=0; i<N; i++) { 895 writeInt((int)val[i]); 896 } 897 } else { 898 writeInt(-1); 899 } 900 } 901 902 public final char[] createCharArray() { 903 int N = readInt(); 904 if (N >= 0 && N <= (dataAvail() >> 2)) { 905 char[] val = new char[N]; 906 for (int i=0; i<N; i++) { 907 val[i] = (char)readInt(); 908 } 909 return val; 910 } else { 911 return null; 912 } 913 } 914 915 public final void readCharArray(char[] val) { 916 int N = readInt(); 917 if (N == val.length) { 918 for (int i=0; i<N; i++) { 919 val[i] = (char)readInt(); 920 } 921 } else { 922 throw new RuntimeException("bad array lengths"); 923 } 924 } 925 926 public final void writeIntArray(int[] val) { 927 if (val != null) { 928 int N = val.length; 929 writeInt(N); 930 for (int i=0; i<N; i++) { 931 writeInt(val[i]); 932 } 933 } else { 934 writeInt(-1); 935 } 936 } 937 938 public final int[] createIntArray() { 939 int N = readInt(); 940 if (N >= 0 && N <= (dataAvail() >> 2)) { 941 int[] val = new int[N]; 942 for (int i=0; i<N; i++) { 943 val[i] = readInt(); 944 } 945 return val; 946 } else { 947 return null; 948 } 949 } 950 951 public final void readIntArray(int[] val) { 952 int N = readInt(); 953 if (N == val.length) { 954 for (int i=0; i<N; i++) { 955 val[i] = readInt(); 956 } 957 } else { 958 throw new RuntimeException("bad array lengths"); 959 } 960 } 961 962 public final void writeLongArray(long[] val) { 963 if (val != null) { 964 int N = val.length; 965 writeInt(N); 966 for (int i=0; i<N; i++) { 967 writeLong(val[i]); 968 } 969 } else { 970 writeInt(-1); 971 } 972 } 973 974 public final long[] createLongArray() { 975 int N = readInt(); 976 // >>3 because stored longs are 64 bits 977 if (N >= 0 && N <= (dataAvail() >> 3)) { 978 long[] val = new long[N]; 979 for (int i=0; i<N; i++) { 980 val[i] = readLong(); 981 } 982 return val; 983 } else { 984 return null; 985 } 986 } 987 988 public final void readLongArray(long[] val) { 989 int N = readInt(); 990 if (N == val.length) { 991 for (int i=0; i<N; i++) { 992 val[i] = readLong(); 993 } 994 } else { 995 throw new RuntimeException("bad array lengths"); 996 } 997 } 998 999 public final void writeFloatArray(float[] val) { 1000 if (val != null) { 1001 int N = val.length; 1002 writeInt(N); 1003 for (int i=0; i<N; i++) { 1004 writeFloat(val[i]); 1005 } 1006 } else { 1007 writeInt(-1); 1008 } 1009 } 1010 1011 public final float[] createFloatArray() { 1012 int N = readInt(); 1013 // >>2 because stored floats are 4 bytes 1014 if (N >= 0 && N <= (dataAvail() >> 2)) { 1015 float[] val = new float[N]; 1016 for (int i=0; i<N; i++) { 1017 val[i] = readFloat(); 1018 } 1019 return val; 1020 } else { 1021 return null; 1022 } 1023 } 1024 1025 public final void readFloatArray(float[] val) { 1026 int N = readInt(); 1027 if (N == val.length) { 1028 for (int i=0; i<N; i++) { 1029 val[i] = readFloat(); 1030 } 1031 } else { 1032 throw new RuntimeException("bad array lengths"); 1033 } 1034 } 1035 1036 public final void writeDoubleArray(double[] val) { 1037 if (val != null) { 1038 int N = val.length; 1039 writeInt(N); 1040 for (int i=0; i<N; i++) { 1041 writeDouble(val[i]); 1042 } 1043 } else { 1044 writeInt(-1); 1045 } 1046 } 1047 1048 public final double[] createDoubleArray() { 1049 int N = readInt(); 1050 // >>3 because stored doubles are 8 bytes 1051 if (N >= 0 && N <= (dataAvail() >> 3)) { 1052 double[] val = new double[N]; 1053 for (int i=0; i<N; i++) { 1054 val[i] = readDouble(); 1055 } 1056 return val; 1057 } else { 1058 return null; 1059 } 1060 } 1061 1062 public final void readDoubleArray(double[] val) { 1063 int N = readInt(); 1064 if (N == val.length) { 1065 for (int i=0; i<N; i++) { 1066 val[i] = readDouble(); 1067 } 1068 } else { 1069 throw new RuntimeException("bad array lengths"); 1070 } 1071 } 1072 1073 public final void writeStringArray(String[] val) { 1074 if (val != null) { 1075 int N = val.length; 1076 writeInt(N); 1077 for (int i=0; i<N; i++) { 1078 writeString(val[i]); 1079 } 1080 } else { 1081 writeInt(-1); 1082 } 1083 } 1084 1085 public final String[] createStringArray() { 1086 int N = readInt(); 1087 if (N >= 0) { 1088 String[] val = new String[N]; 1089 for (int i=0; i<N; i++) { 1090 val[i] = readString(); 1091 } 1092 return val; 1093 } else { 1094 return null; 1095 } 1096 } 1097 1098 public final void readStringArray(String[] val) { 1099 int N = readInt(); 1100 if (N == val.length) { 1101 for (int i=0; i<N; i++) { 1102 val[i] = readString(); 1103 } 1104 } else { 1105 throw new RuntimeException("bad array lengths"); 1106 } 1107 } 1108 1109 public final void writeBinderArray(IBinder[] val) { 1110 if (val != null) { 1111 int N = val.length; 1112 writeInt(N); 1113 for (int i=0; i<N; i++) { 1114 writeStrongBinder(val[i]); 1115 } 1116 } else { 1117 writeInt(-1); 1118 } 1119 } 1120 1121 /** 1122 * @hide 1123 */ 1124 public final void writeCharSequenceArray(CharSequence[] val) { 1125 if (val != null) { 1126 int N = val.length; 1127 writeInt(N); 1128 for (int i=0; i<N; i++) { 1129 writeCharSequence(val[i]); 1130 } 1131 } else { 1132 writeInt(-1); 1133 } 1134 } 1135 1136 /** 1137 * @hide 1138 */ 1139 public final void writeCharSequenceList(ArrayList<CharSequence> val) { 1140 if (val != null) { 1141 int N = val.size(); 1142 writeInt(N); 1143 for (int i=0; i<N; i++) { 1144 writeCharSequence(val.get(i)); 1145 } 1146 } else { 1147 writeInt(-1); 1148 } 1149 } 1150 1151 public final IBinder[] createBinderArray() { 1152 int N = readInt(); 1153 if (N >= 0) { 1154 IBinder[] val = new IBinder[N]; 1155 for (int i=0; i<N; i++) { 1156 val[i] = readStrongBinder(); 1157 } 1158 return val; 1159 } else { 1160 return null; 1161 } 1162 } 1163 1164 public final void readBinderArray(IBinder[] val) { 1165 int N = readInt(); 1166 if (N == val.length) { 1167 for (int i=0; i<N; i++) { 1168 val[i] = readStrongBinder(); 1169 } 1170 } else { 1171 throw new RuntimeException("bad array lengths"); 1172 } 1173 } 1174 1175 /** 1176 * Flatten a List containing a particular object type into the parcel, at 1177 * the current dataPosition() and growing dataCapacity() if needed. The 1178 * type of the objects in the list must be one that implements Parcelable. 1179 * Unlike the generic writeList() method, however, only the raw data of the 1180 * objects is written and not their type, so you must use the corresponding 1181 * readTypedList() to unmarshall them. 1182 * 1183 * @param val The list of objects to be written. 1184 * 1185 * @see #createTypedArrayList 1186 * @see #readTypedList 1187 * @see Parcelable 1188 */ 1189 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1190 if (val == null) { 1191 writeInt(-1); 1192 return; 1193 } 1194 int N = val.size(); 1195 int i=0; 1196 writeInt(N); 1197 while (i < N) { 1198 T item = val.get(i); 1199 if (item != null) { 1200 writeInt(1); 1201 item.writeToParcel(this, 0); 1202 } else { 1203 writeInt(0); 1204 } 1205 i++; 1206 } 1207 } 1208 1209 /** 1210 * Flatten a List containing String objects into the parcel, at 1211 * the current dataPosition() and growing dataCapacity() if needed. They 1212 * can later be retrieved with {@link #createStringArrayList} or 1213 * {@link #readStringList}. 1214 * 1215 * @param val The list of strings to be written. 1216 * 1217 * @see #createStringArrayList 1218 * @see #readStringList 1219 */ 1220 public final void writeStringList(List<String> val) { 1221 if (val == null) { 1222 writeInt(-1); 1223 return; 1224 } 1225 int N = val.size(); 1226 int i=0; 1227 writeInt(N); 1228 while (i < N) { 1229 writeString(val.get(i)); 1230 i++; 1231 } 1232 } 1233 1234 /** 1235 * Flatten a List containing IBinder objects into the parcel, at 1236 * the current dataPosition() and growing dataCapacity() if needed. They 1237 * can later be retrieved with {@link #createBinderArrayList} or 1238 * {@link #readBinderList}. 1239 * 1240 * @param val The list of strings to be written. 1241 * 1242 * @see #createBinderArrayList 1243 * @see #readBinderList 1244 */ 1245 public final void writeBinderList(List<IBinder> val) { 1246 if (val == null) { 1247 writeInt(-1); 1248 return; 1249 } 1250 int N = val.size(); 1251 int i=0; 1252 writeInt(N); 1253 while (i < N) { 1254 writeStrongBinder(val.get(i)); 1255 i++; 1256 } 1257 } 1258 1259 /** 1260 * Flatten a heterogeneous array containing a particular object type into 1261 * the parcel, at 1262 * the current dataPosition() and growing dataCapacity() if needed. The 1263 * type of the objects in the array must be one that implements Parcelable. 1264 * Unlike the {@link #writeParcelableArray} method, however, only the 1265 * raw data of the objects is written and not their type, so you must use 1266 * {@link #readTypedArray} with the correct corresponding 1267 * {@link Parcelable.Creator} implementation to unmarshall them. 1268 * 1269 * @param val The array of objects to be written. 1270 * @param parcelableFlags Contextual flags as per 1271 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1272 * 1273 * @see #readTypedArray 1274 * @see #writeParcelableArray 1275 * @see Parcelable.Creator 1276 */ 1277 public final <T extends Parcelable> void writeTypedArray(T[] val, 1278 int parcelableFlags) { 1279 if (val != null) { 1280 int N = val.length; 1281 writeInt(N); 1282 for (int i=0; i<N; i++) { 1283 T item = val[i]; 1284 if (item != null) { 1285 writeInt(1); 1286 item.writeToParcel(this, parcelableFlags); 1287 } else { 1288 writeInt(0); 1289 } 1290 } 1291 } else { 1292 writeInt(-1); 1293 } 1294 } 1295 1296 /** 1297 * Flatten the Parcelable object into the parcel. 1298 * 1299 * @param val The Parcelable object to be written. 1300 * @param parcelableFlags Contextual flags as per 1301 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1302 * 1303 * @see #readTypedObject 1304 */ 1305 public final <T extends Parcelable> void writeTypedObject(T val, int parcelableFlags) { 1306 if (val != null) { 1307 writeInt(1); 1308 val.writeToParcel(this, parcelableFlags); 1309 } else { 1310 writeInt(0); 1311 } 1312 } 1313 1314 /** 1315 * Flatten a generic object in to a parcel. The given Object value may 1316 * currently be one of the following types: 1317 * 1318 * <ul> 1319 * <li> null 1320 * <li> String 1321 * <li> Byte 1322 * <li> Short 1323 * <li> Integer 1324 * <li> Long 1325 * <li> Float 1326 * <li> Double 1327 * <li> Boolean 1328 * <li> String[] 1329 * <li> boolean[] 1330 * <li> byte[] 1331 * <li> int[] 1332 * <li> long[] 1333 * <li> Object[] (supporting objects of the same type defined here). 1334 * <li> {@link Bundle} 1335 * <li> Map (as supported by {@link #writeMap}). 1336 * <li> Any object that implements the {@link Parcelable} protocol. 1337 * <li> Parcelable[] 1338 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1339 * <li> List (as supported by {@link #writeList}). 1340 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1341 * <li> {@link IBinder} 1342 * <li> Any object that implements Serializable (but see 1343 * {@link #writeSerializable} for caveats). Note that all of the 1344 * previous types have relatively efficient implementations for 1345 * writing to a Parcel; having to rely on the generic serialization 1346 * approach is much less efficient and should be avoided whenever 1347 * possible. 1348 * </ul> 1349 * 1350 * <p class="caution">{@link Parcelable} objects are written with 1351 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1352 * serializing objects containing {@link ParcelFileDescriptor}s, 1353 * this may result in file descriptor leaks when they are returned from 1354 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1355 * should be used).</p> 1356 */ 1357 public final void writeValue(Object v) { 1358 if (v == null) { 1359 writeInt(VAL_NULL); 1360 } else if (v instanceof String) { 1361 writeInt(VAL_STRING); 1362 writeString((String) v); 1363 } else if (v instanceof Integer) { 1364 writeInt(VAL_INTEGER); 1365 writeInt((Integer) v); 1366 } else if (v instanceof Map) { 1367 writeInt(VAL_MAP); 1368 writeMap((Map) v); 1369 } else if (v instanceof Bundle) { 1370 // Must be before Parcelable 1371 writeInt(VAL_BUNDLE); 1372 writeBundle((Bundle) v); 1373 } else if (v instanceof PersistableBundle) { 1374 writeInt(VAL_PERSISTABLEBUNDLE); 1375 writePersistableBundle((PersistableBundle) v); 1376 } else if (v instanceof Parcelable) { 1377 // IMPOTANT: cases for classes that implement Parcelable must 1378 // come before the Parcelable case, so that their specific VAL_* 1379 // types will be written. 1380 writeInt(VAL_PARCELABLE); 1381 writeParcelable((Parcelable) v, 0); 1382 } else if (v instanceof Short) { 1383 writeInt(VAL_SHORT); 1384 writeInt(((Short) v).intValue()); 1385 } else if (v instanceof Long) { 1386 writeInt(VAL_LONG); 1387 writeLong((Long) v); 1388 } else if (v instanceof Float) { 1389 writeInt(VAL_FLOAT); 1390 writeFloat((Float) v); 1391 } else if (v instanceof Double) { 1392 writeInt(VAL_DOUBLE); 1393 writeDouble((Double) v); 1394 } else if (v instanceof Boolean) { 1395 writeInt(VAL_BOOLEAN); 1396 writeInt((Boolean) v ? 1 : 0); 1397 } else if (v instanceof CharSequence) { 1398 // Must be after String 1399 writeInt(VAL_CHARSEQUENCE); 1400 writeCharSequence((CharSequence) v); 1401 } else if (v instanceof List) { 1402 writeInt(VAL_LIST); 1403 writeList((List) v); 1404 } else if (v instanceof SparseArray) { 1405 writeInt(VAL_SPARSEARRAY); 1406 writeSparseArray((SparseArray) v); 1407 } else if (v instanceof boolean[]) { 1408 writeInt(VAL_BOOLEANARRAY); 1409 writeBooleanArray((boolean[]) v); 1410 } else if (v instanceof byte[]) { 1411 writeInt(VAL_BYTEARRAY); 1412 writeByteArray((byte[]) v); 1413 } else if (v instanceof String[]) { 1414 writeInt(VAL_STRINGARRAY); 1415 writeStringArray((String[]) v); 1416 } else if (v instanceof CharSequence[]) { 1417 // Must be after String[] and before Object[] 1418 writeInt(VAL_CHARSEQUENCEARRAY); 1419 writeCharSequenceArray((CharSequence[]) v); 1420 } else if (v instanceof IBinder) { 1421 writeInt(VAL_IBINDER); 1422 writeStrongBinder((IBinder) v); 1423 } else if (v instanceof Parcelable[]) { 1424 writeInt(VAL_PARCELABLEARRAY); 1425 writeParcelableArray((Parcelable[]) v, 0); 1426 } else if (v instanceof int[]) { 1427 writeInt(VAL_INTARRAY); 1428 writeIntArray((int[]) v); 1429 } else if (v instanceof long[]) { 1430 writeInt(VAL_LONGARRAY); 1431 writeLongArray((long[]) v); 1432 } else if (v instanceof Byte) { 1433 writeInt(VAL_BYTE); 1434 writeInt((Byte) v); 1435 } else if (v instanceof Size) { 1436 writeInt(VAL_SIZE); 1437 writeSize((Size) v); 1438 } else if (v instanceof SizeF) { 1439 writeInt(VAL_SIZEF); 1440 writeSizeF((SizeF) v); 1441 } else if (v instanceof double[]) { 1442 writeInt(VAL_DOUBLEARRAY); 1443 writeDoubleArray((double[]) v); 1444 } else { 1445 Class<?> clazz = v.getClass(); 1446 if (clazz.isArray() && clazz.getComponentType() == Object.class) { 1447 // Only pure Object[] are written here, Other arrays of non-primitive types are 1448 // handled by serialization as this does not record the component type. 1449 writeInt(VAL_OBJECTARRAY); 1450 writeArray((Object[]) v); 1451 } else if (v instanceof Serializable) { 1452 // Must be last 1453 writeInt(VAL_SERIALIZABLE); 1454 writeSerializable((Serializable) v); 1455 } else { 1456 throw new RuntimeException("Parcel: unable to marshal value " + v); 1457 } 1458 } 1459 } 1460 1461 /** 1462 * Flatten the name of the class of the Parcelable and its contents 1463 * into the parcel. 1464 * 1465 * @param p The Parcelable object to be written. 1466 * @param parcelableFlags Contextual flags as per 1467 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1468 */ 1469 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1470 if (p == null) { 1471 writeString(null); 1472 return; 1473 } 1474 writeParcelableCreator(p); 1475 p.writeToParcel(this, parcelableFlags); 1476 } 1477 1478 /** @hide */ 1479 public final void writeParcelableCreator(Parcelable p) { 1480 String name = p.getClass().getName(); 1481 writeString(name); 1482 } 1483 1484 /** 1485 * Write a generic serializable object in to a Parcel. It is strongly 1486 * recommended that this method be avoided, since the serialization 1487 * overhead is extremely large, and this approach will be much slower than 1488 * using the other approaches to writing data in to a Parcel. 1489 */ 1490 public final void writeSerializable(Serializable s) { 1491 if (s == null) { 1492 writeString(null); 1493 return; 1494 } 1495 String name = s.getClass().getName(); 1496 writeString(name); 1497 1498 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1499 try { 1500 ObjectOutputStream oos = new ObjectOutputStream(baos); 1501 oos.writeObject(s); 1502 oos.close(); 1503 1504 writeByteArray(baos.toByteArray()); 1505 } catch (IOException ioe) { 1506 throw new RuntimeException("Parcelable encountered " + 1507 "IOException writing serializable object (name = " + name + 1508 ")", ioe); 1509 } 1510 } 1511 1512 /** 1513 * Special function for writing an exception result at the header of 1514 * a parcel, to be used when returning an exception from a transaction. 1515 * Note that this currently only supports a few exception types; any other 1516 * exception will be re-thrown by this function as a RuntimeException 1517 * (to be caught by the system's last-resort exception handling when 1518 * dispatching a transaction). 1519 * 1520 * <p>The supported exception types are: 1521 * <ul> 1522 * <li>{@link BadParcelableException} 1523 * <li>{@link IllegalArgumentException} 1524 * <li>{@link IllegalStateException} 1525 * <li>{@link NullPointerException} 1526 * <li>{@link SecurityException} 1527 * <li>{@link NetworkOnMainThreadException} 1528 * </ul> 1529 * 1530 * @param e The Exception to be written. 1531 * 1532 * @see #writeNoException 1533 * @see #readException 1534 */ 1535 public final void writeException(Exception e) { 1536 int code = 0; 1537 if (e instanceof SecurityException) { 1538 code = EX_SECURITY; 1539 } else if (e instanceof BadParcelableException) { 1540 code = EX_BAD_PARCELABLE; 1541 } else if (e instanceof IllegalArgumentException) { 1542 code = EX_ILLEGAL_ARGUMENT; 1543 } else if (e instanceof NullPointerException) { 1544 code = EX_NULL_POINTER; 1545 } else if (e instanceof IllegalStateException) { 1546 code = EX_ILLEGAL_STATE; 1547 } else if (e instanceof NetworkOnMainThreadException) { 1548 code = EX_NETWORK_MAIN_THREAD; 1549 } else if (e instanceof UnsupportedOperationException) { 1550 code = EX_UNSUPPORTED_OPERATION; 1551 } else if (e instanceof ServiceSpecificException) { 1552 code = EX_SERVICE_SPECIFIC; 1553 } 1554 writeInt(code); 1555 StrictMode.clearGatheredViolations(); 1556 if (code == 0) { 1557 if (e instanceof RuntimeException) { 1558 throw (RuntimeException) e; 1559 } 1560 throw new RuntimeException(e); 1561 } 1562 writeString(e.getMessage()); 1563 if (e instanceof ServiceSpecificException) { 1564 writeInt(((ServiceSpecificException)e).errorCode); 1565 } 1566 } 1567 1568 /** 1569 * Special function for writing information at the front of the Parcel 1570 * indicating that no exception occurred. 1571 * 1572 * @see #writeException 1573 * @see #readException 1574 */ 1575 public final void writeNoException() { 1576 // Despite the name of this function ("write no exception"), 1577 // it should instead be thought of as "write the RPC response 1578 // header", but because this function name is written out by 1579 // the AIDL compiler, we're not going to rename it. 1580 // 1581 // The response header, in the non-exception case (see also 1582 // writeException above, also called by the AIDL compiler), is 1583 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1584 // StrictMode has gathered up violations that have occurred 1585 // during a Binder call, in which case we write out the number 1586 // of violations and their details, serialized, before the 1587 // actual RPC respons data. The receiving end of this is 1588 // readException(), below. 1589 if (StrictMode.hasGatheredViolations()) { 1590 writeInt(EX_HAS_REPLY_HEADER); 1591 final int sizePosition = dataPosition(); 1592 writeInt(0); // total size of fat header, to be filled in later 1593 StrictMode.writeGatheredViolationsToParcel(this); 1594 final int payloadPosition = dataPosition(); 1595 setDataPosition(sizePosition); 1596 writeInt(payloadPosition - sizePosition); // header size 1597 setDataPosition(payloadPosition); 1598 } else { 1599 writeInt(0); 1600 } 1601 } 1602 1603 /** 1604 * Special function for reading an exception result from the header of 1605 * a parcel, to be used after receiving the result of a transaction. This 1606 * will throw the exception for you if it had been written to the Parcel, 1607 * otherwise return and let you read the normal result data from the Parcel. 1608 * 1609 * @see #writeException 1610 * @see #writeNoException 1611 */ 1612 public final void readException() { 1613 int code = readExceptionCode(); 1614 if (code != 0) { 1615 String msg = readString(); 1616 readException(code, msg); 1617 } 1618 } 1619 1620 /** 1621 * Parses the header of a Binder call's response Parcel and 1622 * returns the exception code. Deals with lite or fat headers. 1623 * In the common successful case, this header is generally zero. 1624 * In less common cases, it's a small negative number and will be 1625 * followed by an error string. 1626 * 1627 * This exists purely for android.database.DatabaseUtils and 1628 * insulating it from having to handle fat headers as returned by 1629 * e.g. StrictMode-induced RPC responses. 1630 * 1631 * @hide 1632 */ 1633 public final int readExceptionCode() { 1634 int code = readInt(); 1635 if (code == EX_HAS_REPLY_HEADER) { 1636 int headerSize = readInt(); 1637 if (headerSize == 0) { 1638 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1639 } else { 1640 // Currently the only thing in the header is StrictMode stacks, 1641 // but discussions around event/RPC tracing suggest we might 1642 // put that here too. If so, switch on sub-header tags here. 1643 // But for now, just parse out the StrictMode stuff. 1644 StrictMode.readAndHandleBinderCallViolations(this); 1645 } 1646 // And fat response headers are currently only used when 1647 // there are no exceptions, so return no error: 1648 return 0; 1649 } 1650 return code; 1651 } 1652 1653 /** 1654 * Throw an exception with the given message. Not intended for use 1655 * outside the Parcel class. 1656 * 1657 * @param code Used to determine which exception class to throw. 1658 * @param msg The exception message. 1659 */ 1660 public final void readException(int code, String msg) { 1661 switch (code) { 1662 case EX_SECURITY: 1663 throw new SecurityException(msg); 1664 case EX_BAD_PARCELABLE: 1665 throw new BadParcelableException(msg); 1666 case EX_ILLEGAL_ARGUMENT: 1667 throw new IllegalArgumentException(msg); 1668 case EX_NULL_POINTER: 1669 throw new NullPointerException(msg); 1670 case EX_ILLEGAL_STATE: 1671 throw new IllegalStateException(msg); 1672 case EX_NETWORK_MAIN_THREAD: 1673 throw new NetworkOnMainThreadException(); 1674 case EX_UNSUPPORTED_OPERATION: 1675 throw new UnsupportedOperationException(msg); 1676 case EX_SERVICE_SPECIFIC: 1677 throw new ServiceSpecificException(readInt(), msg); 1678 } 1679 throw new RuntimeException("Unknown exception code: " + code 1680 + " msg " + msg); 1681 } 1682 1683 /** 1684 * Read an integer value from the parcel at the current dataPosition(). 1685 */ 1686 public final int readInt() { 1687 return nativeReadInt(mNativePtr); 1688 } 1689 1690 /** 1691 * Read a long integer value from the parcel at the current dataPosition(). 1692 */ 1693 public final long readLong() { 1694 return nativeReadLong(mNativePtr); 1695 } 1696 1697 /** 1698 * Read a floating point value from the parcel at the current 1699 * dataPosition(). 1700 */ 1701 public final float readFloat() { 1702 return nativeReadFloat(mNativePtr); 1703 } 1704 1705 /** 1706 * Read a double precision floating point value from the parcel at the 1707 * current dataPosition(). 1708 */ 1709 public final double readDouble() { 1710 return nativeReadDouble(mNativePtr); 1711 } 1712 1713 /** 1714 * Read a string value from the parcel at the current dataPosition(). 1715 */ 1716 public final String readString() { 1717 return nativeReadString(mNativePtr); 1718 } 1719 1720 /** 1721 * Read a CharSequence value from the parcel at the current dataPosition(). 1722 * @hide 1723 */ 1724 public final CharSequence readCharSequence() { 1725 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1726 } 1727 1728 /** 1729 * Read an object from the parcel at the current dataPosition(). 1730 */ 1731 public final IBinder readStrongBinder() { 1732 return nativeReadStrongBinder(mNativePtr); 1733 } 1734 1735 /** 1736 * Read a FileDescriptor from the parcel at the current dataPosition(). 1737 */ 1738 public final ParcelFileDescriptor readFileDescriptor() { 1739 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1740 return fd != null ? new ParcelFileDescriptor(fd) : null; 1741 } 1742 1743 /** {@hide} */ 1744 public final FileDescriptor readRawFileDescriptor() { 1745 return nativeReadFileDescriptor(mNativePtr); 1746 } 1747 1748 /** 1749 * {@hide} 1750 * Read and return a new array of FileDescriptors from the parcel. 1751 * @return the FileDescriptor array, or null if the array is null. 1752 **/ 1753 public final FileDescriptor[] createRawFileDescriptorArray() { 1754 int N = readInt(); 1755 if (N < 0) { 1756 return null; 1757 } 1758 FileDescriptor[] f = new FileDescriptor[N]; 1759 for (int i = 0; i < N; i++) { 1760 f[i] = readRawFileDescriptor(); 1761 } 1762 return f; 1763 } 1764 1765 /** 1766 * {@hide} 1767 * Read an array of FileDescriptors from a parcel. 1768 * The passed array must be exactly the length of the array in the parcel. 1769 * @return the FileDescriptor array, or null if the array is null. 1770 **/ 1771 public final void readRawFileDescriptorArray(FileDescriptor[] val) { 1772 int N = readInt(); 1773 if (N == val.length) { 1774 for (int i=0; i<N; i++) { 1775 val[i] = readRawFileDescriptor(); 1776 } 1777 } else { 1778 throw new RuntimeException("bad array lengths"); 1779 } 1780 } 1781 1782 1783 /*package*/ static native FileDescriptor openFileDescriptor(String file, 1784 int mode) throws FileNotFoundException; 1785 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 1786 throws IOException; 1787 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 1788 throws IOException; 1789 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 1790 1791 /** 1792 * Read a byte value from the parcel at the current dataPosition(). 1793 */ 1794 public final byte readByte() { 1795 return (byte)(readInt() & 0xff); 1796 } 1797 1798 /** 1799 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1800 * been written with {@link #writeBundle}. Read into an existing Map object 1801 * from the parcel at the current dataPosition(). 1802 */ 1803 public final void readMap(Map outVal, ClassLoader loader) { 1804 int N = readInt(); 1805 readMapInternal(outVal, N, loader); 1806 } 1807 1808 /** 1809 * Read into an existing List object from the parcel at the current 1810 * dataPosition(), using the given class loader to load any enclosed 1811 * Parcelables. If it is null, the default class loader is used. 1812 */ 1813 public final void readList(List outVal, ClassLoader loader) { 1814 int N = readInt(); 1815 readListInternal(outVal, N, loader); 1816 } 1817 1818 /** 1819 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1820 * been written with {@link #writeBundle}. Read and return a new HashMap 1821 * object from the parcel at the current dataPosition(), using the given 1822 * class loader to load any enclosed Parcelables. Returns null if 1823 * the previously written map object was null. 1824 */ 1825 public final HashMap readHashMap(ClassLoader loader) 1826 { 1827 int N = readInt(); 1828 if (N < 0) { 1829 return null; 1830 } 1831 HashMap m = new HashMap(N); 1832 readMapInternal(m, N, loader); 1833 return m; 1834 } 1835 1836 /** 1837 * Read and return a new Bundle object from the parcel at the current 1838 * dataPosition(). Returns null if the previously written Bundle object was 1839 * null. 1840 */ 1841 public final Bundle readBundle() { 1842 return readBundle(null); 1843 } 1844 1845 /** 1846 * Read and return a new Bundle object from the parcel at the current 1847 * dataPosition(), using the given class loader to initialize the class 1848 * loader of the Bundle for later retrieval of Parcelable objects. 1849 * Returns null if the previously written Bundle object was null. 1850 */ 1851 public final Bundle readBundle(ClassLoader loader) { 1852 int length = readInt(); 1853 if (length < 0) { 1854 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1855 return null; 1856 } 1857 1858 final Bundle bundle = new Bundle(this, length); 1859 if (loader != null) { 1860 bundle.setClassLoader(loader); 1861 } 1862 return bundle; 1863 } 1864 1865 /** 1866 * Read and return a new Bundle object from the parcel at the current 1867 * dataPosition(). Returns null if the previously written Bundle object was 1868 * null. 1869 */ 1870 public final PersistableBundle readPersistableBundle() { 1871 return readPersistableBundle(null); 1872 } 1873 1874 /** 1875 * Read and return a new Bundle object from the parcel at the current 1876 * dataPosition(), using the given class loader to initialize the class 1877 * loader of the Bundle for later retrieval of Parcelable objects. 1878 * Returns null if the previously written Bundle object was null. 1879 */ 1880 public final PersistableBundle readPersistableBundle(ClassLoader loader) { 1881 int length = readInt(); 1882 if (length < 0) { 1883 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1884 return null; 1885 } 1886 1887 final PersistableBundle bundle = new PersistableBundle(this, length); 1888 if (loader != null) { 1889 bundle.setClassLoader(loader); 1890 } 1891 return bundle; 1892 } 1893 1894 /** 1895 * Read a Size from the parcel at the current dataPosition(). 1896 */ 1897 public final Size readSize() { 1898 final int width = readInt(); 1899 final int height = readInt(); 1900 return new Size(width, height); 1901 } 1902 1903 /** 1904 * Read a SizeF from the parcel at the current dataPosition(). 1905 */ 1906 public final SizeF readSizeF() { 1907 final float width = readFloat(); 1908 final float height = readFloat(); 1909 return new SizeF(width, height); 1910 } 1911 1912 /** 1913 * Read and return a byte[] object from the parcel. 1914 */ 1915 public final byte[] createByteArray() { 1916 return nativeCreateByteArray(mNativePtr); 1917 } 1918 1919 /** 1920 * Read a byte[] object from the parcel and copy it into the 1921 * given byte array. 1922 */ 1923 public final void readByteArray(byte[] val) { 1924 // TODO: make this a native method to avoid the extra copy. 1925 byte[] ba = createByteArray(); 1926 if (ba.length == val.length) { 1927 System.arraycopy(ba, 0, val, 0, ba.length); 1928 } else { 1929 throw new RuntimeException("bad array lengths"); 1930 } 1931 } 1932 1933 /** 1934 * Read a blob of data from the parcel and return it as a byte array. 1935 * {@hide} 1936 * {@SystemApi} 1937 */ 1938 public final byte[] readBlob() { 1939 return nativeReadBlob(mNativePtr); 1940 } 1941 1942 /** 1943 * Read and return a String[] object from the parcel. 1944 * {@hide} 1945 */ 1946 public final String[] readStringArray() { 1947 String[] array = null; 1948 1949 int length = readInt(); 1950 if (length >= 0) 1951 { 1952 array = new String[length]; 1953 1954 for (int i = 0 ; i < length ; i++) 1955 { 1956 array[i] = readString(); 1957 } 1958 } 1959 1960 return array; 1961 } 1962 1963 /** 1964 * Read and return a CharSequence[] object from the parcel. 1965 * {@hide} 1966 */ 1967 public final CharSequence[] readCharSequenceArray() { 1968 CharSequence[] array = null; 1969 1970 int length = readInt(); 1971 if (length >= 0) 1972 { 1973 array = new CharSequence[length]; 1974 1975 for (int i = 0 ; i < length ; i++) 1976 { 1977 array[i] = readCharSequence(); 1978 } 1979 } 1980 1981 return array; 1982 } 1983 1984 /** 1985 * Read and return an ArrayList<CharSequence> object from the parcel. 1986 * {@hide} 1987 */ 1988 public final ArrayList<CharSequence> readCharSequenceList() { 1989 ArrayList<CharSequence> array = null; 1990 1991 int length = readInt(); 1992 if (length >= 0) { 1993 array = new ArrayList<CharSequence>(length); 1994 1995 for (int i = 0 ; i < length ; i++) { 1996 array.add(readCharSequence()); 1997 } 1998 } 1999 2000 return array; 2001 } 2002 2003 /** 2004 * Read and return a new ArrayList object from the parcel at the current 2005 * dataPosition(). Returns null if the previously written list object was 2006 * null. The given class loader will be used to load any enclosed 2007 * Parcelables. 2008 */ 2009 public final ArrayList readArrayList(ClassLoader loader) { 2010 int N = readInt(); 2011 if (N < 0) { 2012 return null; 2013 } 2014 ArrayList l = new ArrayList(N); 2015 readListInternal(l, N, loader); 2016 return l; 2017 } 2018 2019 /** 2020 * Read and return a new Object array from the parcel at the current 2021 * dataPosition(). Returns null if the previously written array was 2022 * null. The given class loader will be used to load any enclosed 2023 * Parcelables. 2024 */ 2025 public final Object[] readArray(ClassLoader loader) { 2026 int N = readInt(); 2027 if (N < 0) { 2028 return null; 2029 } 2030 Object[] l = new Object[N]; 2031 readArrayInternal(l, N, loader); 2032 return l; 2033 } 2034 2035 /** 2036 * Read and return a new SparseArray object from the parcel at the current 2037 * dataPosition(). Returns null if the previously written list object was 2038 * null. The given class loader will be used to load any enclosed 2039 * Parcelables. 2040 */ 2041 public final SparseArray readSparseArray(ClassLoader loader) { 2042 int N = readInt(); 2043 if (N < 0) { 2044 return null; 2045 } 2046 SparseArray sa = new SparseArray(N); 2047 readSparseArrayInternal(sa, N, loader); 2048 return sa; 2049 } 2050 2051 /** 2052 * Read and return a new SparseBooleanArray object from the parcel at the current 2053 * dataPosition(). Returns null if the previously written list object was 2054 * null. 2055 */ 2056 public final SparseBooleanArray readSparseBooleanArray() { 2057 int N = readInt(); 2058 if (N < 0) { 2059 return null; 2060 } 2061 SparseBooleanArray sa = new SparseBooleanArray(N); 2062 readSparseBooleanArrayInternal(sa, N); 2063 return sa; 2064 } 2065 2066 /** 2067 * Read and return a new ArrayList containing a particular object type from 2068 * the parcel that was written with {@link #writeTypedList} at the 2069 * current dataPosition(). Returns null if the 2070 * previously written list object was null. The list <em>must</em> have 2071 * previously been written via {@link #writeTypedList} with the same object 2072 * type. 2073 * 2074 * @return A newly created ArrayList containing objects with the same data 2075 * as those that were previously written. 2076 * 2077 * @see #writeTypedList 2078 */ 2079 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 2080 int N = readInt(); 2081 if (N < 0) { 2082 return null; 2083 } 2084 ArrayList<T> l = new ArrayList<T>(N); 2085 while (N > 0) { 2086 if (readInt() != 0) { 2087 l.add(c.createFromParcel(this)); 2088 } else { 2089 l.add(null); 2090 } 2091 N--; 2092 } 2093 return l; 2094 } 2095 2096 /** 2097 * Read into the given List items containing a particular object type 2098 * that were written with {@link #writeTypedList} at the 2099 * current dataPosition(). The list <em>must</em> have 2100 * previously been written via {@link #writeTypedList} with the same object 2101 * type. 2102 * 2103 * @return A newly created ArrayList containing objects with the same data 2104 * as those that were previously written. 2105 * 2106 * @see #writeTypedList 2107 */ 2108 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 2109 int M = list.size(); 2110 int N = readInt(); 2111 int i = 0; 2112 for (; i < M && i < N; i++) { 2113 if (readInt() != 0) { 2114 list.set(i, c.createFromParcel(this)); 2115 } else { 2116 list.set(i, null); 2117 } 2118 } 2119 for (; i<N; i++) { 2120 if (readInt() != 0) { 2121 list.add(c.createFromParcel(this)); 2122 } else { 2123 list.add(null); 2124 } 2125 } 2126 for (; i<M; i++) { 2127 list.remove(N); 2128 } 2129 } 2130 2131 /** 2132 * Read and return a new ArrayList containing String objects from 2133 * the parcel that was written with {@link #writeStringList} at the 2134 * current dataPosition(). Returns null if the 2135 * previously written list object was null. 2136 * 2137 * @return A newly created ArrayList containing strings with the same data 2138 * as those that were previously written. 2139 * 2140 * @see #writeStringList 2141 */ 2142 public final ArrayList<String> createStringArrayList() { 2143 int N = readInt(); 2144 if (N < 0) { 2145 return null; 2146 } 2147 ArrayList<String> l = new ArrayList<String>(N); 2148 while (N > 0) { 2149 l.add(readString()); 2150 N--; 2151 } 2152 return l; 2153 } 2154 2155 /** 2156 * Read and return a new ArrayList containing IBinder objects from 2157 * the parcel that was written with {@link #writeBinderList} at the 2158 * current dataPosition(). Returns null if the 2159 * previously written list object was null. 2160 * 2161 * @return A newly created ArrayList containing strings with the same data 2162 * as those that were previously written. 2163 * 2164 * @see #writeBinderList 2165 */ 2166 public final ArrayList<IBinder> createBinderArrayList() { 2167 int N = readInt(); 2168 if (N < 0) { 2169 return null; 2170 } 2171 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 2172 while (N > 0) { 2173 l.add(readStrongBinder()); 2174 N--; 2175 } 2176 return l; 2177 } 2178 2179 /** 2180 * Read into the given List items String objects that were written with 2181 * {@link #writeStringList} at the current dataPosition(). 2182 * 2183 * @return A newly created ArrayList containing strings with the same data 2184 * as those that were previously written. 2185 * 2186 * @see #writeStringList 2187 */ 2188 public final void readStringList(List<String> list) { 2189 int M = list.size(); 2190 int N = readInt(); 2191 int i = 0; 2192 for (; i < M && i < N; i++) { 2193 list.set(i, readString()); 2194 } 2195 for (; i<N; i++) { 2196 list.add(readString()); 2197 } 2198 for (; i<M; i++) { 2199 list.remove(N); 2200 } 2201 } 2202 2203 /** 2204 * Read into the given List items IBinder objects that were written with 2205 * {@link #writeBinderList} at the current dataPosition(). 2206 * 2207 * @return A newly created ArrayList containing strings with the same data 2208 * as those that were previously written. 2209 * 2210 * @see #writeBinderList 2211 */ 2212 public final void readBinderList(List<IBinder> list) { 2213 int M = list.size(); 2214 int N = readInt(); 2215 int i = 0; 2216 for (; i < M && i < N; i++) { 2217 list.set(i, readStrongBinder()); 2218 } 2219 for (; i<N; i++) { 2220 list.add(readStrongBinder()); 2221 } 2222 for (; i<M; i++) { 2223 list.remove(N); 2224 } 2225 } 2226 2227 /** 2228 * Read and return a new array containing a particular object type from 2229 * the parcel at the current dataPosition(). Returns null if the 2230 * previously written array was null. The array <em>must</em> have 2231 * previously been written via {@link #writeTypedArray} with the same 2232 * object type. 2233 * 2234 * @return A newly created array containing objects with the same data 2235 * as those that were previously written. 2236 * 2237 * @see #writeTypedArray 2238 */ 2239 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 2240 int N = readInt(); 2241 if (N < 0) { 2242 return null; 2243 } 2244 T[] l = c.newArray(N); 2245 for (int i=0; i<N; i++) { 2246 if (readInt() != 0) { 2247 l[i] = c.createFromParcel(this); 2248 } 2249 } 2250 return l; 2251 } 2252 2253 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 2254 int N = readInt(); 2255 if (N == val.length) { 2256 for (int i=0; i<N; i++) { 2257 if (readInt() != 0) { 2258 val[i] = c.createFromParcel(this); 2259 } else { 2260 val[i] = null; 2261 } 2262 } 2263 } else { 2264 throw new RuntimeException("bad array lengths"); 2265 } 2266 } 2267 2268 /** 2269 * @deprecated 2270 * @hide 2271 */ 2272 @Deprecated 2273 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 2274 return createTypedArray(c); 2275 } 2276 2277 /** 2278 * Read and return a typed Parcelable object from a parcel. 2279 * Returns null if the previous written object was null. 2280 * The object <em>must</em> have previous been written via 2281 * {@link #writeTypedObject} with the same object type. 2282 * 2283 * @return A newly created object of the type that was previously 2284 * written. 2285 * 2286 * @see #writeTypedObject 2287 */ 2288 public final <T> T readTypedObject(Parcelable.Creator<T> c) { 2289 if (readInt() != 0) { 2290 return c.createFromParcel(this); 2291 } else { 2292 return null; 2293 } 2294 } 2295 2296 /** 2297 * Write a heterogeneous array of Parcelable objects into the Parcel. 2298 * Each object in the array is written along with its class name, so 2299 * that the correct class can later be instantiated. As a result, this 2300 * has significantly more overhead than {@link #writeTypedArray}, but will 2301 * correctly handle an array containing more than one type of object. 2302 * 2303 * @param value The array of objects to be written. 2304 * @param parcelableFlags Contextual flags as per 2305 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 2306 * 2307 * @see #writeTypedArray 2308 */ 2309 public final <T extends Parcelable> void writeParcelableArray(T[] value, 2310 int parcelableFlags) { 2311 if (value != null) { 2312 int N = value.length; 2313 writeInt(N); 2314 for (int i=0; i<N; i++) { 2315 writeParcelable(value[i], parcelableFlags); 2316 } 2317 } else { 2318 writeInt(-1); 2319 } 2320 } 2321 2322 /** 2323 * Read a typed object from a parcel. The given class loader will be 2324 * used to load any enclosed Parcelables. If it is null, the default class 2325 * loader will be used. 2326 */ 2327 public final Object readValue(ClassLoader loader) { 2328 int type = readInt(); 2329 2330 switch (type) { 2331 case VAL_NULL: 2332 return null; 2333 2334 case VAL_STRING: 2335 return readString(); 2336 2337 case VAL_INTEGER: 2338 return readInt(); 2339 2340 case VAL_MAP: 2341 return readHashMap(loader); 2342 2343 case VAL_PARCELABLE: 2344 return readParcelable(loader); 2345 2346 case VAL_SHORT: 2347 return (short) readInt(); 2348 2349 case VAL_LONG: 2350 return readLong(); 2351 2352 case VAL_FLOAT: 2353 return readFloat(); 2354 2355 case VAL_DOUBLE: 2356 return readDouble(); 2357 2358 case VAL_BOOLEAN: 2359 return readInt() == 1; 2360 2361 case VAL_CHARSEQUENCE: 2362 return readCharSequence(); 2363 2364 case VAL_LIST: 2365 return readArrayList(loader); 2366 2367 case VAL_BOOLEANARRAY: 2368 return createBooleanArray(); 2369 2370 case VAL_BYTEARRAY: 2371 return createByteArray(); 2372 2373 case VAL_STRINGARRAY: 2374 return readStringArray(); 2375 2376 case VAL_CHARSEQUENCEARRAY: 2377 return readCharSequenceArray(); 2378 2379 case VAL_IBINDER: 2380 return readStrongBinder(); 2381 2382 case VAL_OBJECTARRAY: 2383 return readArray(loader); 2384 2385 case VAL_INTARRAY: 2386 return createIntArray(); 2387 2388 case VAL_LONGARRAY: 2389 return createLongArray(); 2390 2391 case VAL_BYTE: 2392 return readByte(); 2393 2394 case VAL_SERIALIZABLE: 2395 return readSerializable(loader); 2396 2397 case VAL_PARCELABLEARRAY: 2398 return readParcelableArray(loader); 2399 2400 case VAL_SPARSEARRAY: 2401 return readSparseArray(loader); 2402 2403 case VAL_SPARSEBOOLEANARRAY: 2404 return readSparseBooleanArray(); 2405 2406 case VAL_BUNDLE: 2407 return readBundle(loader); // loading will be deferred 2408 2409 case VAL_PERSISTABLEBUNDLE: 2410 return readPersistableBundle(loader); 2411 2412 case VAL_SIZE: 2413 return readSize(); 2414 2415 case VAL_SIZEF: 2416 return readSizeF(); 2417 2418 case VAL_DOUBLEARRAY: 2419 return createDoubleArray(); 2420 2421 default: 2422 int off = dataPosition() - 4; 2423 throw new RuntimeException( 2424 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2425 } 2426 } 2427 2428 /** 2429 * Read and return a new Parcelable from the parcel. The given class loader 2430 * will be used to load any enclosed Parcelables. If it is null, the default 2431 * class loader will be used. 2432 * @param loader A ClassLoader from which to instantiate the Parcelable 2433 * object, or null for the default class loader. 2434 * @return Returns the newly created Parcelable, or null if a null 2435 * object has been written. 2436 * @throws BadParcelableException Throws BadParcelableException if there 2437 * was an error trying to instantiate the Parcelable. 2438 */ 2439 @SuppressWarnings("unchecked") 2440 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2441 Parcelable.Creator<?> creator = readParcelableCreator(loader); 2442 if (creator == null) { 2443 return null; 2444 } 2445 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2446 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2447 (Parcelable.ClassLoaderCreator<?>) creator; 2448 return (T) classLoaderCreator.createFromParcel(this, loader); 2449 } 2450 return (T) creator.createFromParcel(this); 2451 } 2452 2453 /** @hide */ 2454 @SuppressWarnings("unchecked") 2455 public final <T extends Parcelable> T readCreator(Parcelable.Creator<?> creator, 2456 ClassLoader loader) { 2457 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2458 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2459 (Parcelable.ClassLoaderCreator<?>) creator; 2460 return (T) classLoaderCreator.createFromParcel(this, loader); 2461 } 2462 return (T) creator.createFromParcel(this); 2463 } 2464 2465 /** @hide */ 2466 public final Parcelable.Creator<?> readParcelableCreator(ClassLoader loader) { 2467 String name = readString(); 2468 if (name == null) { 2469 return null; 2470 } 2471 Parcelable.Creator<?> creator; 2472 synchronized (mCreators) { 2473 HashMap<String,Parcelable.Creator<?>> map = mCreators.get(loader); 2474 if (map == null) { 2475 map = new HashMap<>(); 2476 mCreators.put(loader, map); 2477 } 2478 creator = map.get(name); 2479 if (creator == null) { 2480 try { 2481 // If loader == null, explicitly emulate Class.forName(String) "caller 2482 // classloader" behavior. 2483 ClassLoader parcelableClassLoader = 2484 (loader == null ? getClass().getClassLoader() : loader); 2485 // Avoid initializing the Parcelable class until we know it implements 2486 // Parcelable and has the necessary CREATOR field. http://b/1171613. 2487 Class<?> parcelableClass = Class.forName(name, false /* initialize */, 2488 parcelableClassLoader); 2489 if (!Parcelable.class.isAssignableFrom(parcelableClass)) { 2490 throw new BadParcelableException("Parcelable protocol requires that the " 2491 + "class implements Parcelable"); 2492 } 2493 Field f = parcelableClass.getField("CREATOR"); 2494 if ((f.getModifiers() & Modifier.STATIC) == 0) { 2495 throw new BadParcelableException("Parcelable protocol requires " 2496 + "the CREATOR object to be static on class " + name); 2497 } 2498 Class<?> creatorType = f.getType(); 2499 if (!Parcelable.Creator.class.isAssignableFrom(creatorType)) { 2500 // Fail before calling Field.get(), not after, to avoid initializing 2501 // parcelableClass unnecessarily. 2502 throw new BadParcelableException("Parcelable protocol requires a " 2503 + "Parcelable.Creator object called " 2504 + "CREATOR on class " + name); 2505 } 2506 creator = (Parcelable.Creator<?>) f.get(null); 2507 } 2508 catch (IllegalAccessException e) { 2509 Log.e(TAG, "Illegal access when unmarshalling: " + name, e); 2510 throw new BadParcelableException( 2511 "IllegalAccessException when unmarshalling: " + name); 2512 } 2513 catch (ClassNotFoundException e) { 2514 Log.e(TAG, "Class not found when unmarshalling: " + name, e); 2515 throw new BadParcelableException( 2516 "ClassNotFoundException when unmarshalling: " + name); 2517 } 2518 catch (NoSuchFieldException e) { 2519 throw new BadParcelableException("Parcelable protocol requires a " 2520 + "Parcelable.Creator object called " 2521 + "CREATOR on class " + name); 2522 } 2523 if (creator == null) { 2524 throw new BadParcelableException("Parcelable protocol requires a " 2525 + "non-null Parcelable.Creator object called " 2526 + "CREATOR on class " + name); 2527 } 2528 2529 map.put(name, creator); 2530 } 2531 } 2532 2533 return creator; 2534 } 2535 2536 /** 2537 * Read and return a new Parcelable array from the parcel. 2538 * The given class loader will be used to load any enclosed 2539 * Parcelables. 2540 * @return the Parcelable array, or null if the array is null 2541 */ 2542 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2543 int N = readInt(); 2544 if (N < 0) { 2545 return null; 2546 } 2547 Parcelable[] p = new Parcelable[N]; 2548 for (int i = 0; i < N; i++) { 2549 p[i] = readParcelable(loader); 2550 } 2551 return p; 2552 } 2553 2554 /** 2555 * Read and return a new Serializable object from the parcel. 2556 * @return the Serializable object, or null if the Serializable name 2557 * wasn't found in the parcel. 2558 */ 2559 public final Serializable readSerializable() { 2560 return readSerializable(null); 2561 } 2562 2563 private final Serializable readSerializable(final ClassLoader loader) { 2564 String name = readString(); 2565 if (name == null) { 2566 // For some reason we were unable to read the name of the Serializable (either there 2567 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2568 // return null, which indicates that the name wasn't found in the parcel. 2569 return null; 2570 } 2571 2572 byte[] serializedData = createByteArray(); 2573 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2574 try { 2575 ObjectInputStream ois = new ObjectInputStream(bais) { 2576 @Override 2577 protected Class<?> resolveClass(ObjectStreamClass osClass) 2578 throws IOException, ClassNotFoundException { 2579 // try the custom classloader if provided 2580 if (loader != null) { 2581 Class<?> c = Class.forName(osClass.getName(), false, loader); 2582 if (c != null) { 2583 return c; 2584 } 2585 } 2586 return super.resolveClass(osClass); 2587 } 2588 }; 2589 return (Serializable) ois.readObject(); 2590 } catch (IOException ioe) { 2591 throw new RuntimeException("Parcelable encountered " + 2592 "IOException reading a Serializable object (name = " + name + 2593 ")", ioe); 2594 } catch (ClassNotFoundException cnfe) { 2595 throw new RuntimeException("Parcelable encountered " + 2596 "ClassNotFoundException reading a Serializable object (name = " 2597 + name + ")", cnfe); 2598 } 2599 } 2600 2601 // Cache of previously looked up CREATOR.createFromParcel() methods for 2602 // particular classes. Keys are the names of the classes, values are 2603 // Method objects. 2604 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator<?>>> 2605 mCreators = new HashMap<>(); 2606 2607 /** @hide for internal use only. */ 2608 static protected final Parcel obtain(int obj) { 2609 throw new UnsupportedOperationException(); 2610 } 2611 2612 /** @hide */ 2613 static protected final Parcel obtain(long obj) { 2614 final Parcel[] pool = sHolderPool; 2615 synchronized (pool) { 2616 Parcel p; 2617 for (int i=0; i<POOL_SIZE; i++) { 2618 p = pool[i]; 2619 if (p != null) { 2620 pool[i] = null; 2621 if (DEBUG_RECYCLE) { 2622 p.mStack = new RuntimeException(); 2623 } 2624 p.init(obj); 2625 return p; 2626 } 2627 } 2628 } 2629 return new Parcel(obj); 2630 } 2631 2632 private Parcel(long nativePtr) { 2633 if (DEBUG_RECYCLE) { 2634 mStack = new RuntimeException(); 2635 } 2636 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2637 init(nativePtr); 2638 } 2639 2640 private void init(long nativePtr) { 2641 if (nativePtr != 0) { 2642 mNativePtr = nativePtr; 2643 mOwnsNativeParcelObject = false; 2644 } else { 2645 mNativePtr = nativeCreate(); 2646 mOwnsNativeParcelObject = true; 2647 } 2648 } 2649 2650 private void freeBuffer() { 2651 if (mOwnsNativeParcelObject) { 2652 updateNativeSize(nativeFreeBuffer(mNativePtr)); 2653 } 2654 } 2655 2656 private void destroy() { 2657 if (mNativePtr != 0) { 2658 if (mOwnsNativeParcelObject) { 2659 nativeDestroy(mNativePtr); 2660 updateNativeSize(0); 2661 } 2662 mNativePtr = 0; 2663 } 2664 } 2665 2666 @Override 2667 protected void finalize() throws Throwable { 2668 if (DEBUG_RECYCLE) { 2669 if (mStack != null) { 2670 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2671 } 2672 } 2673 destroy(); 2674 } 2675 2676 /* package */ void readMapInternal(Map outVal, int N, 2677 ClassLoader loader) { 2678 while (N > 0) { 2679 Object key = readValue(loader); 2680 Object value = readValue(loader); 2681 outVal.put(key, value); 2682 N--; 2683 } 2684 } 2685 2686 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2687 ClassLoader loader) { 2688 if (DEBUG_ARRAY_MAP) { 2689 RuntimeException here = new RuntimeException("here"); 2690 here.fillInStackTrace(); 2691 Log.d(TAG, "Reading " + N + " ArrayMap entries", here); 2692 } 2693 int startPos; 2694 while (N > 0) { 2695 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 2696 String key = readString(); 2697 Object value = readValue(loader); 2698 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read #" + (N-1) + " " 2699 + (dataPosition()-startPos) + " bytes: key=0x" 2700 + Integer.toHexString((key != null ? key.hashCode() : 0)) + " " + key); 2701 outVal.append(key, value); 2702 N--; 2703 } 2704 outVal.validate(); 2705 } 2706 2707 /* package */ void readArrayMapSafelyInternal(ArrayMap outVal, int N, 2708 ClassLoader loader) { 2709 if (DEBUG_ARRAY_MAP) { 2710 RuntimeException here = new RuntimeException("here"); 2711 here.fillInStackTrace(); 2712 Log.d(TAG, "Reading safely " + N + " ArrayMap entries", here); 2713 } 2714 while (N > 0) { 2715 String key = readString(); 2716 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read safe #" + (N-1) + ": key=0x" 2717 + (key != null ? key.hashCode() : 0) + " " + key); 2718 Object value = readValue(loader); 2719 outVal.put(key, value); 2720 N--; 2721 } 2722 } 2723 2724 /** 2725 * @hide For testing only. 2726 */ 2727 public void readArrayMap(ArrayMap outVal, ClassLoader loader) { 2728 final int N = readInt(); 2729 if (N < 0) { 2730 return; 2731 } 2732 readArrayMapInternal(outVal, N, loader); 2733 } 2734 2735 private void readListInternal(List outVal, int N, 2736 ClassLoader loader) { 2737 while (N > 0) { 2738 Object value = readValue(loader); 2739 //Log.d(TAG, "Unmarshalling value=" + value); 2740 outVal.add(value); 2741 N--; 2742 } 2743 } 2744 2745 private void readArrayInternal(Object[] outVal, int N, 2746 ClassLoader loader) { 2747 for (int i = 0; i < N; i++) { 2748 Object value = readValue(loader); 2749 //Log.d(TAG, "Unmarshalling value=" + value); 2750 outVal[i] = value; 2751 } 2752 } 2753 2754 private void readSparseArrayInternal(SparseArray outVal, int N, 2755 ClassLoader loader) { 2756 while (N > 0) { 2757 int key = readInt(); 2758 Object value = readValue(loader); 2759 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2760 outVal.append(key, value); 2761 N--; 2762 } 2763 } 2764 2765 2766 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 2767 while (N > 0) { 2768 int key = readInt(); 2769 boolean value = this.readByte() == 1; 2770 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2771 outVal.append(key, value); 2772 N--; 2773 } 2774 } 2775 2776 /** 2777 * @hide For testing 2778 */ 2779 public long getBlobAshmemSize() { 2780 return nativeGetBlobAshmemSize(mNativePtr); 2781 } 2782} 2783