Parcel.java revision 3cefe6a991ba650375e663e7095266e2273d2372
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 // Keep in sync with frameworks/native/libs/binder/PersistableBundle.cpp. 208 private static final int VAL_NULL = -1; 209 private static final int VAL_STRING = 0; 210 private static final int VAL_INTEGER = 1; 211 private static final int VAL_MAP = 2; 212 private static final int VAL_BUNDLE = 3; 213 private static final int VAL_PARCELABLE = 4; 214 private static final int VAL_SHORT = 5; 215 private static final int VAL_LONG = 6; 216 private static final int VAL_FLOAT = 7; 217 private static final int VAL_DOUBLE = 8; 218 private static final int VAL_BOOLEAN = 9; 219 private static final int VAL_CHARSEQUENCE = 10; 220 private static final int VAL_LIST = 11; 221 private static final int VAL_SPARSEARRAY = 12; 222 private static final int VAL_BYTEARRAY = 13; 223 private static final int VAL_STRINGARRAY = 14; 224 private static final int VAL_IBINDER = 15; 225 private static final int VAL_PARCELABLEARRAY = 16; 226 private static final int VAL_OBJECTARRAY = 17; 227 private static final int VAL_INTARRAY = 18; 228 private static final int VAL_LONGARRAY = 19; 229 private static final int VAL_BYTE = 20; 230 private static final int VAL_SERIALIZABLE = 21; 231 private static final int VAL_SPARSEBOOLEANARRAY = 22; 232 private static final int VAL_BOOLEANARRAY = 23; 233 private static final int VAL_CHARSEQUENCEARRAY = 24; 234 private static final int VAL_PERSISTABLEBUNDLE = 25; 235 private static final int VAL_SIZE = 26; 236 private static final int VAL_SIZEF = 27; 237 private static final int VAL_DOUBLEARRAY = 28; 238 239 // The initial int32 in a Binder call's reply Parcel header: 240 // Keep these in sync with libbinder's binder/Status.h. 241 private static final int EX_SECURITY = -1; 242 private static final int EX_BAD_PARCELABLE = -2; 243 private static final int EX_ILLEGAL_ARGUMENT = -3; 244 private static final int EX_NULL_POINTER = -4; 245 private static final int EX_ILLEGAL_STATE = -5; 246 private static final int EX_NETWORK_MAIN_THREAD = -6; 247 private static final int EX_UNSUPPORTED_OPERATION = -7; 248 private static final int EX_SERVICE_SPECIFIC = -8; 249 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 250 // EX_TRANSACTION_FAILED is used exclusively in native code. 251 // see libbinder's binder/Status.h 252 private static final int EX_TRANSACTION_FAILED = -129; 253 254 private static native int nativeDataSize(long nativePtr); 255 private static native int nativeDataAvail(long nativePtr); 256 private static native int nativeDataPosition(long nativePtr); 257 private static native int nativeDataCapacity(long nativePtr); 258 private static native long nativeSetDataSize(long nativePtr, int size); 259 private static native void nativeSetDataPosition(long nativePtr, int pos); 260 private static native void nativeSetDataCapacity(long nativePtr, int size); 261 262 private static native boolean nativePushAllowFds(long nativePtr, boolean allowFds); 263 private static native void nativeRestoreAllowFds(long nativePtr, boolean lastValue); 264 265 private static native void nativeWriteByteArray(long nativePtr, byte[] b, int offset, int len); 266 private static native void nativeWriteBlob(long nativePtr, byte[] b, int offset, int len); 267 private static native void nativeWriteInt(long nativePtr, int val); 268 private static native void nativeWriteLong(long nativePtr, long val); 269 private static native void nativeWriteFloat(long nativePtr, float val); 270 private static native void nativeWriteDouble(long nativePtr, double val); 271 private static native void nativeWriteString(long nativePtr, String val); 272 private static native void nativeWriteStrongBinder(long nativePtr, IBinder val); 273 private static native long nativeWriteFileDescriptor(long nativePtr, FileDescriptor val); 274 275 private static native byte[] nativeCreateByteArray(long nativePtr); 276 private static native byte[] nativeReadBlob(long nativePtr); 277 private static native int nativeReadInt(long nativePtr); 278 private static native long nativeReadLong(long nativePtr); 279 private static native float nativeReadFloat(long nativePtr); 280 private static native double nativeReadDouble(long nativePtr); 281 private static native String nativeReadString(long nativePtr); 282 private static native IBinder nativeReadStrongBinder(long nativePtr); 283 private static native FileDescriptor nativeReadFileDescriptor(long nativePtr); 284 285 private static native long nativeCreate(); 286 private static native long nativeFreeBuffer(long nativePtr); 287 private static native void nativeDestroy(long nativePtr); 288 289 private static native byte[] nativeMarshall(long nativePtr); 290 private static native long nativeUnmarshall( 291 long nativePtr, byte[] data, int offset, int length); 292 private static native long nativeAppendFrom( 293 long thisNativePtr, long otherNativePtr, int offset, int length); 294 private static native boolean nativeHasFileDescriptors(long nativePtr); 295 private static native void nativeWriteInterfaceToken(long nativePtr, String interfaceName); 296 private static native void nativeEnforceInterface(long nativePtr, String interfaceName); 297 298 private static native long nativeGetBlobAshmemSize(long nativePtr); 299 300 public final static Parcelable.Creator<String> STRING_CREATOR 301 = new Parcelable.Creator<String>() { 302 public String createFromParcel(Parcel source) { 303 return source.readString(); 304 } 305 public String[] newArray(int size) { 306 return new String[size]; 307 } 308 }; 309 310 /** 311 * Retrieve a new Parcel object from the pool. 312 */ 313 public static Parcel obtain() { 314 final Parcel[] pool = sOwnedPool; 315 synchronized (pool) { 316 Parcel p; 317 for (int i=0; i<POOL_SIZE; i++) { 318 p = pool[i]; 319 if (p != null) { 320 pool[i] = null; 321 if (DEBUG_RECYCLE) { 322 p.mStack = new RuntimeException(); 323 } 324 return p; 325 } 326 } 327 } 328 return new Parcel(0); 329 } 330 331 /** 332 * Put a Parcel object back into the pool. You must not touch 333 * the object after this call. 334 */ 335 public final void recycle() { 336 if (DEBUG_RECYCLE) mStack = null; 337 freeBuffer(); 338 339 final Parcel[] pool; 340 if (mOwnsNativeParcelObject) { 341 pool = sOwnedPool; 342 } else { 343 mNativePtr = 0; 344 pool = sHolderPool; 345 } 346 347 synchronized (pool) { 348 for (int i=0; i<POOL_SIZE; i++) { 349 if (pool[i] == null) { 350 pool[i] = this; 351 return; 352 } 353 } 354 } 355 } 356 357 /** @hide */ 358 public static native long getGlobalAllocSize(); 359 360 /** @hide */ 361 public static native long getGlobalAllocCount(); 362 363 /** 364 * Returns the total amount of data contained in the parcel. 365 */ 366 public final int dataSize() { 367 return nativeDataSize(mNativePtr); 368 } 369 370 /** 371 * Returns the amount of data remaining to be read from the 372 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 373 */ 374 public final int dataAvail() { 375 return nativeDataAvail(mNativePtr); 376 } 377 378 /** 379 * Returns the current position in the parcel data. Never 380 * more than {@link #dataSize}. 381 */ 382 public final int dataPosition() { 383 return nativeDataPosition(mNativePtr); 384 } 385 386 /** 387 * Returns the total amount of space in the parcel. This is always 388 * >= {@link #dataSize}. The difference between it and dataSize() is the 389 * amount of room left until the parcel needs to re-allocate its 390 * data buffer. 391 */ 392 public final int dataCapacity() { 393 return nativeDataCapacity(mNativePtr); 394 } 395 396 /** 397 * Change the amount of data in the parcel. Can be either smaller or 398 * larger than the current size. If larger than the current capacity, 399 * more memory will be allocated. 400 * 401 * @param size The new number of bytes in the Parcel. 402 */ 403 public final void setDataSize(int size) { 404 updateNativeSize(nativeSetDataSize(mNativePtr, size)); 405 } 406 407 /** 408 * Move the current read/write position in the parcel. 409 * @param pos New offset in the parcel; must be between 0 and 410 * {@link #dataSize}. 411 */ 412 public final void setDataPosition(int pos) { 413 nativeSetDataPosition(mNativePtr, pos); 414 } 415 416 /** 417 * Change the capacity (current available space) of the parcel. 418 * 419 * @param size The new capacity of the parcel, in bytes. Can not be 420 * less than {@link #dataSize} -- that is, you can not drop existing data 421 * with this method. 422 */ 423 public final void setDataCapacity(int size) { 424 nativeSetDataCapacity(mNativePtr, size); 425 } 426 427 /** @hide */ 428 public final boolean pushAllowFds(boolean allowFds) { 429 return nativePushAllowFds(mNativePtr, allowFds); 430 } 431 432 /** @hide */ 433 public final void restoreAllowFds(boolean lastValue) { 434 nativeRestoreAllowFds(mNativePtr, lastValue); 435 } 436 437 /** 438 * Returns the raw bytes of the parcel. 439 * 440 * <p class="note">The data you retrieve here <strong>must not</strong> 441 * be placed in any kind of persistent storage (on local disk, across 442 * a network, etc). For that, you should use standard serialization 443 * or another kind of general serialization mechanism. The Parcel 444 * marshalled representation is highly optimized for local IPC, and as 445 * such does not attempt to maintain compatibility with data created 446 * in different versions of the platform. 447 */ 448 public final byte[] marshall() { 449 return nativeMarshall(mNativePtr); 450 } 451 452 /** 453 * Set the bytes in data to be the raw bytes of this Parcel. 454 */ 455 public final void unmarshall(byte[] data, int offset, int length) { 456 updateNativeSize(nativeUnmarshall(mNativePtr, data, offset, length)); 457 } 458 459 public final void appendFrom(Parcel parcel, int offset, int length) { 460 updateNativeSize(nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length)); 461 } 462 463 /** 464 * Report whether the parcel contains any marshalled file descriptors. 465 */ 466 public final boolean hasFileDescriptors() { 467 return nativeHasFileDescriptors(mNativePtr); 468 } 469 470 /** 471 * Store or read an IBinder interface token in the parcel at the current 472 * {@link #dataPosition}. This is used to validate that the marshalled 473 * transaction is intended for the target interface. 474 */ 475 public final void writeInterfaceToken(String interfaceName) { 476 nativeWriteInterfaceToken(mNativePtr, interfaceName); 477 } 478 479 public final void enforceInterface(String interfaceName) { 480 nativeEnforceInterface(mNativePtr, interfaceName); 481 } 482 483 /** 484 * Write a byte array into the parcel at the current {@link #dataPosition}, 485 * growing {@link #dataCapacity} if needed. 486 * @param b Bytes to place into the parcel. 487 */ 488 public final void writeByteArray(byte[] b) { 489 writeByteArray(b, 0, (b != null) ? b.length : 0); 490 } 491 492 /** 493 * Write a byte array into the parcel at the current {@link #dataPosition}, 494 * growing {@link #dataCapacity} if needed. 495 * @param b Bytes to place into the parcel. 496 * @param offset Index of first byte to be written. 497 * @param len Number of bytes to write. 498 */ 499 public final void writeByteArray(byte[] b, int offset, int len) { 500 if (b == null) { 501 writeInt(-1); 502 return; 503 } 504 Arrays.checkOffsetAndCount(b.length, offset, len); 505 nativeWriteByteArray(mNativePtr, b, offset, len); 506 } 507 508 /** 509 * Write a blob of data into the parcel at the current {@link #dataPosition}, 510 * growing {@link #dataCapacity} if needed. 511 * @param b Bytes to place into the parcel. 512 * {@hide} 513 * {@SystemApi} 514 */ 515 public final void writeBlob(byte[] b) { 516 writeBlob(b, 0, (b != null) ? b.length : 0); 517 } 518 519 /** 520 * Write a blob of data 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 * {@hide} 526 * {@SystemApi} 527 */ 528 public final void writeBlob(byte[] b, int offset, int len) { 529 if (b == null) { 530 writeInt(-1); 531 return; 532 } 533 Arrays.checkOffsetAndCount(b.length, offset, len); 534 nativeWriteBlob(mNativePtr, b, offset, len); 535 } 536 537 /** 538 * Write an integer value into the parcel at the current dataPosition(), 539 * growing dataCapacity() if needed. 540 */ 541 public final void writeInt(int val) { 542 nativeWriteInt(mNativePtr, val); 543 } 544 545 /** 546 * Write a long integer value into the parcel at the current dataPosition(), 547 * growing dataCapacity() if needed. 548 */ 549 public final void writeLong(long val) { 550 nativeWriteLong(mNativePtr, val); 551 } 552 553 /** 554 * Write a floating point value into the parcel at the current 555 * dataPosition(), growing dataCapacity() if needed. 556 */ 557 public final void writeFloat(float val) { 558 nativeWriteFloat(mNativePtr, val); 559 } 560 561 /** 562 * Write a double precision floating point value into the parcel at the 563 * current dataPosition(), growing dataCapacity() if needed. 564 */ 565 public final void writeDouble(double val) { 566 nativeWriteDouble(mNativePtr, val); 567 } 568 569 /** 570 * Write a string value into the parcel at the current dataPosition(), 571 * growing dataCapacity() if needed. 572 */ 573 public final void writeString(String val) { 574 nativeWriteString(mNativePtr, val); 575 } 576 577 /** 578 * Write a CharSequence value into the parcel at the current dataPosition(), 579 * growing dataCapacity() if needed. 580 * @hide 581 */ 582 public final void writeCharSequence(CharSequence val) { 583 TextUtils.writeToParcel(val, this, 0); 584 } 585 586 /** 587 * Write an object into the parcel at the current dataPosition(), 588 * growing dataCapacity() if needed. 589 */ 590 public final void writeStrongBinder(IBinder val) { 591 nativeWriteStrongBinder(mNativePtr, val); 592 } 593 594 /** 595 * Write an object into the parcel at the current dataPosition(), 596 * growing dataCapacity() if needed. 597 */ 598 public final void writeStrongInterface(IInterface val) { 599 writeStrongBinder(val == null ? null : val.asBinder()); 600 } 601 602 /** 603 * Write a FileDescriptor into the parcel at the current dataPosition(), 604 * growing dataCapacity() if needed. 605 * 606 * <p class="caution">The file descriptor will not be closed, which may 607 * result in file descriptor leaks when objects are returned from Binder 608 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 609 * accepts contextual flags and will close the original file descriptor 610 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 611 */ 612 public final void writeFileDescriptor(FileDescriptor val) { 613 updateNativeSize(nativeWriteFileDescriptor(mNativePtr, val)); 614 } 615 616 private void updateNativeSize(long newNativeSize) { 617 if (mOwnsNativeParcelObject) { 618 if (newNativeSize > Integer.MAX_VALUE) { 619 newNativeSize = Integer.MAX_VALUE; 620 } 621 if (newNativeSize != mNativeSize) { 622 int delta = (int) (newNativeSize - mNativeSize); 623 if (delta > 0) { 624 VMRuntime.getRuntime().registerNativeAllocation(delta); 625 } else { 626 VMRuntime.getRuntime().registerNativeFree(-delta); 627 } 628 mNativeSize = newNativeSize; 629 } 630 } 631 } 632 633 /** 634 * {@hide} 635 * This will be the new name for writeFileDescriptor, for consistency. 636 **/ 637 public final void writeRawFileDescriptor(FileDescriptor val) { 638 nativeWriteFileDescriptor(mNativePtr, val); 639 } 640 641 /** 642 * {@hide} 643 * Write an array of FileDescriptor objects into the Parcel. 644 * 645 * @param value The array of objects to be written. 646 */ 647 public final void writeRawFileDescriptorArray(FileDescriptor[] value) { 648 if (value != null) { 649 int N = value.length; 650 writeInt(N); 651 for (int i=0; i<N; i++) { 652 writeRawFileDescriptor(value[i]); 653 } 654 } else { 655 writeInt(-1); 656 } 657 } 658 659 /** 660 * Write a byte value into the parcel at the current dataPosition(), 661 * growing dataCapacity() if needed. 662 */ 663 public final void writeByte(byte val) { 664 writeInt(val); 665 } 666 667 /** 668 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 669 * at the current dataPosition(), 670 * growing dataCapacity() if needed. The Map keys must be String objects. 671 * The Map values are written using {@link #writeValue} and must follow 672 * the specification there. 673 * 674 * <p>It is strongly recommended to use {@link #writeBundle} instead of 675 * this method, since the Bundle class provides a type-safe API that 676 * allows you to avoid mysterious type errors at the point of marshalling. 677 */ 678 public final void writeMap(Map val) { 679 writeMapInternal((Map<String, Object>) val); 680 } 681 682 /** 683 * Flatten a Map into the parcel at the current dataPosition(), 684 * growing dataCapacity() if needed. The Map keys must be String objects. 685 */ 686 /* package */ void writeMapInternal(Map<String,Object> val) { 687 if (val == null) { 688 writeInt(-1); 689 return; 690 } 691 Set<Map.Entry<String,Object>> entries = val.entrySet(); 692 writeInt(entries.size()); 693 for (Map.Entry<String,Object> e : entries) { 694 writeValue(e.getKey()); 695 writeValue(e.getValue()); 696 } 697 } 698 699 /** 700 * Flatten an ArrayMap into the parcel at the current dataPosition(), 701 * growing dataCapacity() if needed. The Map keys must be String objects. 702 */ 703 /* package */ void writeArrayMapInternal(ArrayMap<String, Object> val) { 704 if (val == null) { 705 writeInt(-1); 706 return; 707 } 708 // Keep the format of this Parcel in sync with writeToParcelInner() in 709 // frameworks/native/libs/binder/PersistableBundle.cpp. 710 final int N = val.size(); 711 writeInt(N); 712 if (DEBUG_ARRAY_MAP) { 713 RuntimeException here = new RuntimeException("here"); 714 here.fillInStackTrace(); 715 Log.d(TAG, "Writing " + N + " ArrayMap entries", here); 716 } 717 int startPos; 718 for (int i=0; i<N; i++) { 719 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 720 writeString(val.keyAt(i)); 721 writeValue(val.valueAt(i)); 722 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Write #" + i + " " 723 + (dataPosition()-startPos) + " bytes: key=0x" 724 + Integer.toHexString(val.keyAt(i) != null ? val.keyAt(i).hashCode() : 0) 725 + " " + val.keyAt(i)); 726 } 727 } 728 729 /** 730 * @hide For testing only. 731 */ 732 public void writeArrayMap(ArrayMap<String, Object> val) { 733 writeArrayMapInternal(val); 734 } 735 736 /** 737 * Flatten a Bundle into the parcel at the current dataPosition(), 738 * growing dataCapacity() if needed. 739 */ 740 public final void writeBundle(Bundle val) { 741 if (val == null) { 742 writeInt(-1); 743 return; 744 } 745 746 val.writeToParcel(this, 0); 747 } 748 749 /** 750 * Flatten a PersistableBundle into the parcel at the current dataPosition(), 751 * growing dataCapacity() if needed. 752 */ 753 public final void writePersistableBundle(PersistableBundle val) { 754 if (val == null) { 755 writeInt(-1); 756 return; 757 } 758 759 val.writeToParcel(this, 0); 760 } 761 762 /** 763 * Flatten a Size into the parcel at the current dataPosition(), 764 * growing dataCapacity() if needed. 765 */ 766 public final void writeSize(Size val) { 767 writeInt(val.getWidth()); 768 writeInt(val.getHeight()); 769 } 770 771 /** 772 * Flatten a SizeF into the parcel at the current dataPosition(), 773 * growing dataCapacity() if needed. 774 */ 775 public final void writeSizeF(SizeF val) { 776 writeFloat(val.getWidth()); 777 writeFloat(val.getHeight()); 778 } 779 780 /** 781 * Flatten a List into the parcel at the current dataPosition(), growing 782 * dataCapacity() if needed. The List values are written using 783 * {@link #writeValue} and must follow the specification there. 784 */ 785 public final void writeList(List val) { 786 if (val == null) { 787 writeInt(-1); 788 return; 789 } 790 int N = val.size(); 791 int i=0; 792 writeInt(N); 793 while (i < N) { 794 writeValue(val.get(i)); 795 i++; 796 } 797 } 798 799 /** 800 * Flatten an Object array into the parcel at the current dataPosition(), 801 * growing dataCapacity() if needed. The array values are written using 802 * {@link #writeValue} and must follow the specification there. 803 */ 804 public final void writeArray(Object[] val) { 805 if (val == null) { 806 writeInt(-1); 807 return; 808 } 809 int N = val.length; 810 int i=0; 811 writeInt(N); 812 while (i < N) { 813 writeValue(val[i]); 814 i++; 815 } 816 } 817 818 /** 819 * Flatten a generic SparseArray into the parcel at the current 820 * dataPosition(), growing dataCapacity() if needed. The SparseArray 821 * values are written using {@link #writeValue} and must follow the 822 * specification there. 823 */ 824 public final void writeSparseArray(SparseArray<Object> val) { 825 if (val == null) { 826 writeInt(-1); 827 return; 828 } 829 int N = val.size(); 830 writeInt(N); 831 int i=0; 832 while (i < N) { 833 writeInt(val.keyAt(i)); 834 writeValue(val.valueAt(i)); 835 i++; 836 } 837 } 838 839 public final void writeSparseBooleanArray(SparseBooleanArray val) { 840 if (val == null) { 841 writeInt(-1); 842 return; 843 } 844 int N = val.size(); 845 writeInt(N); 846 int i=0; 847 while (i < N) { 848 writeInt(val.keyAt(i)); 849 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 850 i++; 851 } 852 } 853 854 public final void writeBooleanArray(boolean[] val) { 855 if (val != null) { 856 int N = val.length; 857 writeInt(N); 858 for (int i=0; i<N; i++) { 859 writeInt(val[i] ? 1 : 0); 860 } 861 } else { 862 writeInt(-1); 863 } 864 } 865 866 public final boolean[] createBooleanArray() { 867 int N = readInt(); 868 // >>2 as a fast divide-by-4 works in the create*Array() functions 869 // because dataAvail() will never return a negative number. 4 is 870 // the size of a stored boolean in the stream. 871 if (N >= 0 && N <= (dataAvail() >> 2)) { 872 boolean[] val = new boolean[N]; 873 for (int i=0; i<N; i++) { 874 val[i] = readInt() != 0; 875 } 876 return val; 877 } else { 878 return null; 879 } 880 } 881 882 public final void readBooleanArray(boolean[] val) { 883 int N = readInt(); 884 if (N == val.length) { 885 for (int i=0; i<N; i++) { 886 val[i] = readInt() != 0; 887 } 888 } else { 889 throw new RuntimeException("bad array lengths"); 890 } 891 } 892 893 public final void writeCharArray(char[] val) { 894 if (val != null) { 895 int N = val.length; 896 writeInt(N); 897 for (int i=0; i<N; i++) { 898 writeInt((int)val[i]); 899 } 900 } else { 901 writeInt(-1); 902 } 903 } 904 905 public final char[] createCharArray() { 906 int N = readInt(); 907 if (N >= 0 && N <= (dataAvail() >> 2)) { 908 char[] val = new char[N]; 909 for (int i=0; i<N; i++) { 910 val[i] = (char)readInt(); 911 } 912 return val; 913 } else { 914 return null; 915 } 916 } 917 918 public final void readCharArray(char[] val) { 919 int N = readInt(); 920 if (N == val.length) { 921 for (int i=0; i<N; i++) { 922 val[i] = (char)readInt(); 923 } 924 } else { 925 throw new RuntimeException("bad array lengths"); 926 } 927 } 928 929 public final void writeIntArray(int[] val) { 930 if (val != null) { 931 int N = val.length; 932 writeInt(N); 933 for (int i=0; i<N; i++) { 934 writeInt(val[i]); 935 } 936 } else { 937 writeInt(-1); 938 } 939 } 940 941 public final int[] createIntArray() { 942 int N = readInt(); 943 if (N >= 0 && N <= (dataAvail() >> 2)) { 944 int[] val = new int[N]; 945 for (int i=0; i<N; i++) { 946 val[i] = readInt(); 947 } 948 return val; 949 } else { 950 return null; 951 } 952 } 953 954 public final void readIntArray(int[] val) { 955 int N = readInt(); 956 if (N == val.length) { 957 for (int i=0; i<N; i++) { 958 val[i] = readInt(); 959 } 960 } else { 961 throw new RuntimeException("bad array lengths"); 962 } 963 } 964 965 public final void writeLongArray(long[] val) { 966 if (val != null) { 967 int N = val.length; 968 writeInt(N); 969 for (int i=0; i<N; i++) { 970 writeLong(val[i]); 971 } 972 } else { 973 writeInt(-1); 974 } 975 } 976 977 public final long[] createLongArray() { 978 int N = readInt(); 979 // >>3 because stored longs are 64 bits 980 if (N >= 0 && N <= (dataAvail() >> 3)) { 981 long[] val = new long[N]; 982 for (int i=0; i<N; i++) { 983 val[i] = readLong(); 984 } 985 return val; 986 } else { 987 return null; 988 } 989 } 990 991 public final void readLongArray(long[] val) { 992 int N = readInt(); 993 if (N == val.length) { 994 for (int i=0; i<N; i++) { 995 val[i] = readLong(); 996 } 997 } else { 998 throw new RuntimeException("bad array lengths"); 999 } 1000 } 1001 1002 public final void writeFloatArray(float[] val) { 1003 if (val != null) { 1004 int N = val.length; 1005 writeInt(N); 1006 for (int i=0; i<N; i++) { 1007 writeFloat(val[i]); 1008 } 1009 } else { 1010 writeInt(-1); 1011 } 1012 } 1013 1014 public final float[] createFloatArray() { 1015 int N = readInt(); 1016 // >>2 because stored floats are 4 bytes 1017 if (N >= 0 && N <= (dataAvail() >> 2)) { 1018 float[] val = new float[N]; 1019 for (int i=0; i<N; i++) { 1020 val[i] = readFloat(); 1021 } 1022 return val; 1023 } else { 1024 return null; 1025 } 1026 } 1027 1028 public final void readFloatArray(float[] val) { 1029 int N = readInt(); 1030 if (N == val.length) { 1031 for (int i=0; i<N; i++) { 1032 val[i] = readFloat(); 1033 } 1034 } else { 1035 throw new RuntimeException("bad array lengths"); 1036 } 1037 } 1038 1039 public final void writeDoubleArray(double[] val) { 1040 if (val != null) { 1041 int N = val.length; 1042 writeInt(N); 1043 for (int i=0; i<N; i++) { 1044 writeDouble(val[i]); 1045 } 1046 } else { 1047 writeInt(-1); 1048 } 1049 } 1050 1051 public final double[] createDoubleArray() { 1052 int N = readInt(); 1053 // >>3 because stored doubles are 8 bytes 1054 if (N >= 0 && N <= (dataAvail() >> 3)) { 1055 double[] val = new double[N]; 1056 for (int i=0; i<N; i++) { 1057 val[i] = readDouble(); 1058 } 1059 return val; 1060 } else { 1061 return null; 1062 } 1063 } 1064 1065 public final void readDoubleArray(double[] val) { 1066 int N = readInt(); 1067 if (N == val.length) { 1068 for (int i=0; i<N; i++) { 1069 val[i] = readDouble(); 1070 } 1071 } else { 1072 throw new RuntimeException("bad array lengths"); 1073 } 1074 } 1075 1076 public final void writeStringArray(String[] val) { 1077 if (val != null) { 1078 int N = val.length; 1079 writeInt(N); 1080 for (int i=0; i<N; i++) { 1081 writeString(val[i]); 1082 } 1083 } else { 1084 writeInt(-1); 1085 } 1086 } 1087 1088 public final String[] createStringArray() { 1089 int N = readInt(); 1090 if (N >= 0) { 1091 String[] val = new String[N]; 1092 for (int i=0; i<N; i++) { 1093 val[i] = readString(); 1094 } 1095 return val; 1096 } else { 1097 return null; 1098 } 1099 } 1100 1101 public final void readStringArray(String[] val) { 1102 int N = readInt(); 1103 if (N == val.length) { 1104 for (int i=0; i<N; i++) { 1105 val[i] = readString(); 1106 } 1107 } else { 1108 throw new RuntimeException("bad array lengths"); 1109 } 1110 } 1111 1112 public final void writeBinderArray(IBinder[] val) { 1113 if (val != null) { 1114 int N = val.length; 1115 writeInt(N); 1116 for (int i=0; i<N; i++) { 1117 writeStrongBinder(val[i]); 1118 } 1119 } else { 1120 writeInt(-1); 1121 } 1122 } 1123 1124 /** 1125 * @hide 1126 */ 1127 public final void writeCharSequenceArray(CharSequence[] val) { 1128 if (val != null) { 1129 int N = val.length; 1130 writeInt(N); 1131 for (int i=0; i<N; i++) { 1132 writeCharSequence(val[i]); 1133 } 1134 } else { 1135 writeInt(-1); 1136 } 1137 } 1138 1139 /** 1140 * @hide 1141 */ 1142 public final void writeCharSequenceList(ArrayList<CharSequence> val) { 1143 if (val != null) { 1144 int N = val.size(); 1145 writeInt(N); 1146 for (int i=0; i<N; i++) { 1147 writeCharSequence(val.get(i)); 1148 } 1149 } else { 1150 writeInt(-1); 1151 } 1152 } 1153 1154 public final IBinder[] createBinderArray() { 1155 int N = readInt(); 1156 if (N >= 0) { 1157 IBinder[] val = new IBinder[N]; 1158 for (int i=0; i<N; i++) { 1159 val[i] = readStrongBinder(); 1160 } 1161 return val; 1162 } else { 1163 return null; 1164 } 1165 } 1166 1167 public final void readBinderArray(IBinder[] val) { 1168 int N = readInt(); 1169 if (N == val.length) { 1170 for (int i=0; i<N; i++) { 1171 val[i] = readStrongBinder(); 1172 } 1173 } else { 1174 throw new RuntimeException("bad array lengths"); 1175 } 1176 } 1177 1178 /** 1179 * Flatten a List containing a particular object type into the parcel, at 1180 * the current dataPosition() and growing dataCapacity() if needed. The 1181 * type of the objects in the list must be one that implements Parcelable. 1182 * Unlike the generic writeList() method, however, only the raw data of the 1183 * objects is written and not their type, so you must use the corresponding 1184 * readTypedList() to unmarshall them. 1185 * 1186 * @param val The list of objects to be written. 1187 * 1188 * @see #createTypedArrayList 1189 * @see #readTypedList 1190 * @see Parcelable 1191 */ 1192 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1193 if (val == null) { 1194 writeInt(-1); 1195 return; 1196 } 1197 int N = val.size(); 1198 int i=0; 1199 writeInt(N); 1200 while (i < N) { 1201 T item = val.get(i); 1202 if (item != null) { 1203 writeInt(1); 1204 item.writeToParcel(this, 0); 1205 } else { 1206 writeInt(0); 1207 } 1208 i++; 1209 } 1210 } 1211 1212 /** 1213 * Flatten a List containing String objects into the parcel, at 1214 * the current dataPosition() and growing dataCapacity() if needed. They 1215 * can later be retrieved with {@link #createStringArrayList} or 1216 * {@link #readStringList}. 1217 * 1218 * @param val The list of strings to be written. 1219 * 1220 * @see #createStringArrayList 1221 * @see #readStringList 1222 */ 1223 public final void writeStringList(List<String> val) { 1224 if (val == null) { 1225 writeInt(-1); 1226 return; 1227 } 1228 int N = val.size(); 1229 int i=0; 1230 writeInt(N); 1231 while (i < N) { 1232 writeString(val.get(i)); 1233 i++; 1234 } 1235 } 1236 1237 /** 1238 * Flatten a List containing IBinder objects into the parcel, at 1239 * the current dataPosition() and growing dataCapacity() if needed. They 1240 * can later be retrieved with {@link #createBinderArrayList} or 1241 * {@link #readBinderList}. 1242 * 1243 * @param val The list of strings to be written. 1244 * 1245 * @see #createBinderArrayList 1246 * @see #readBinderList 1247 */ 1248 public final void writeBinderList(List<IBinder> val) { 1249 if (val == null) { 1250 writeInt(-1); 1251 return; 1252 } 1253 int N = val.size(); 1254 int i=0; 1255 writeInt(N); 1256 while (i < N) { 1257 writeStrongBinder(val.get(i)); 1258 i++; 1259 } 1260 } 1261 1262 /** 1263 * Flatten a heterogeneous array containing a particular object type into 1264 * the parcel, at 1265 * the current dataPosition() and growing dataCapacity() if needed. The 1266 * type of the objects in the array must be one that implements Parcelable. 1267 * Unlike the {@link #writeParcelableArray} method, however, only the 1268 * raw data of the objects is written and not their type, so you must use 1269 * {@link #readTypedArray} with the correct corresponding 1270 * {@link Parcelable.Creator} implementation to unmarshall them. 1271 * 1272 * @param val The array of objects to be written. 1273 * @param parcelableFlags Contextual flags as per 1274 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1275 * 1276 * @see #readTypedArray 1277 * @see #writeParcelableArray 1278 * @see Parcelable.Creator 1279 */ 1280 public final <T extends Parcelable> void writeTypedArray(T[] val, 1281 int parcelableFlags) { 1282 if (val != null) { 1283 int N = val.length; 1284 writeInt(N); 1285 for (int i=0; i<N; i++) { 1286 T item = val[i]; 1287 if (item != null) { 1288 writeInt(1); 1289 item.writeToParcel(this, parcelableFlags); 1290 } else { 1291 writeInt(0); 1292 } 1293 } 1294 } else { 1295 writeInt(-1); 1296 } 1297 } 1298 1299 /** 1300 * Flatten the Parcelable object into the parcel. 1301 * 1302 * @param val The Parcelable object to be written. 1303 * @param parcelableFlags Contextual flags as per 1304 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1305 * 1306 * @see #readTypedObject 1307 */ 1308 public final <T extends Parcelable> void writeTypedObject(T val, int parcelableFlags) { 1309 if (val != null) { 1310 writeInt(1); 1311 val.writeToParcel(this, parcelableFlags); 1312 } else { 1313 writeInt(0); 1314 } 1315 } 1316 1317 /** 1318 * Flatten a generic object in to a parcel. The given Object value may 1319 * currently be one of the following types: 1320 * 1321 * <ul> 1322 * <li> null 1323 * <li> String 1324 * <li> Byte 1325 * <li> Short 1326 * <li> Integer 1327 * <li> Long 1328 * <li> Float 1329 * <li> Double 1330 * <li> Boolean 1331 * <li> String[] 1332 * <li> boolean[] 1333 * <li> byte[] 1334 * <li> int[] 1335 * <li> long[] 1336 * <li> Object[] (supporting objects of the same type defined here). 1337 * <li> {@link Bundle} 1338 * <li> Map (as supported by {@link #writeMap}). 1339 * <li> Any object that implements the {@link Parcelable} protocol. 1340 * <li> Parcelable[] 1341 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1342 * <li> List (as supported by {@link #writeList}). 1343 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1344 * <li> {@link IBinder} 1345 * <li> Any object that implements Serializable (but see 1346 * {@link #writeSerializable} for caveats). Note that all of the 1347 * previous types have relatively efficient implementations for 1348 * writing to a Parcel; having to rely on the generic serialization 1349 * approach is much less efficient and should be avoided whenever 1350 * possible. 1351 * </ul> 1352 * 1353 * <p class="caution">{@link Parcelable} objects are written with 1354 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1355 * serializing objects containing {@link ParcelFileDescriptor}s, 1356 * this may result in file descriptor leaks when they are returned from 1357 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1358 * should be used).</p> 1359 */ 1360 public final void writeValue(Object v) { 1361 if (v == null) { 1362 writeInt(VAL_NULL); 1363 } else if (v instanceof String) { 1364 writeInt(VAL_STRING); 1365 writeString((String) v); 1366 } else if (v instanceof Integer) { 1367 writeInt(VAL_INTEGER); 1368 writeInt((Integer) v); 1369 } else if (v instanceof Map) { 1370 writeInt(VAL_MAP); 1371 writeMap((Map) v); 1372 } else if (v instanceof Bundle) { 1373 // Must be before Parcelable 1374 writeInt(VAL_BUNDLE); 1375 writeBundle((Bundle) v); 1376 } else if (v instanceof PersistableBundle) { 1377 writeInt(VAL_PERSISTABLEBUNDLE); 1378 writePersistableBundle((PersistableBundle) v); 1379 } else if (v instanceof Parcelable) { 1380 // IMPOTANT: cases for classes that implement Parcelable must 1381 // come before the Parcelable case, so that their specific VAL_* 1382 // types will be written. 1383 writeInt(VAL_PARCELABLE); 1384 writeParcelable((Parcelable) v, 0); 1385 } else if (v instanceof Short) { 1386 writeInt(VAL_SHORT); 1387 writeInt(((Short) v).intValue()); 1388 } else if (v instanceof Long) { 1389 writeInt(VAL_LONG); 1390 writeLong((Long) v); 1391 } else if (v instanceof Float) { 1392 writeInt(VAL_FLOAT); 1393 writeFloat((Float) v); 1394 } else if (v instanceof Double) { 1395 writeInt(VAL_DOUBLE); 1396 writeDouble((Double) v); 1397 } else if (v instanceof Boolean) { 1398 writeInt(VAL_BOOLEAN); 1399 writeInt((Boolean) v ? 1 : 0); 1400 } else if (v instanceof CharSequence) { 1401 // Must be after String 1402 writeInt(VAL_CHARSEQUENCE); 1403 writeCharSequence((CharSequence) v); 1404 } else if (v instanceof List) { 1405 writeInt(VAL_LIST); 1406 writeList((List) v); 1407 } else if (v instanceof SparseArray) { 1408 writeInt(VAL_SPARSEARRAY); 1409 writeSparseArray((SparseArray) v); 1410 } else if (v instanceof boolean[]) { 1411 writeInt(VAL_BOOLEANARRAY); 1412 writeBooleanArray((boolean[]) v); 1413 } else if (v instanceof byte[]) { 1414 writeInt(VAL_BYTEARRAY); 1415 writeByteArray((byte[]) v); 1416 } else if (v instanceof String[]) { 1417 writeInt(VAL_STRINGARRAY); 1418 writeStringArray((String[]) v); 1419 } else if (v instanceof CharSequence[]) { 1420 // Must be after String[] and before Object[] 1421 writeInt(VAL_CHARSEQUENCEARRAY); 1422 writeCharSequenceArray((CharSequence[]) v); 1423 } else if (v instanceof IBinder) { 1424 writeInt(VAL_IBINDER); 1425 writeStrongBinder((IBinder) v); 1426 } else if (v instanceof Parcelable[]) { 1427 writeInt(VAL_PARCELABLEARRAY); 1428 writeParcelableArray((Parcelable[]) v, 0); 1429 } else if (v instanceof int[]) { 1430 writeInt(VAL_INTARRAY); 1431 writeIntArray((int[]) v); 1432 } else if (v instanceof long[]) { 1433 writeInt(VAL_LONGARRAY); 1434 writeLongArray((long[]) v); 1435 } else if (v instanceof Byte) { 1436 writeInt(VAL_BYTE); 1437 writeInt((Byte) v); 1438 } else if (v instanceof Size) { 1439 writeInt(VAL_SIZE); 1440 writeSize((Size) v); 1441 } else if (v instanceof SizeF) { 1442 writeInt(VAL_SIZEF); 1443 writeSizeF((SizeF) v); 1444 } else if (v instanceof double[]) { 1445 writeInt(VAL_DOUBLEARRAY); 1446 writeDoubleArray((double[]) v); 1447 } else { 1448 Class<?> clazz = v.getClass(); 1449 if (clazz.isArray() && clazz.getComponentType() == Object.class) { 1450 // Only pure Object[] are written here, Other arrays of non-primitive types are 1451 // handled by serialization as this does not record the component type. 1452 writeInt(VAL_OBJECTARRAY); 1453 writeArray((Object[]) v); 1454 } else if (v instanceof Serializable) { 1455 // Must be last 1456 writeInt(VAL_SERIALIZABLE); 1457 writeSerializable((Serializable) v); 1458 } else { 1459 throw new RuntimeException("Parcel: unable to marshal value " + v); 1460 } 1461 } 1462 } 1463 1464 /** 1465 * Flatten the name of the class of the Parcelable and its contents 1466 * into the parcel. 1467 * 1468 * @param p The Parcelable object to be written. 1469 * @param parcelableFlags Contextual flags as per 1470 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1471 */ 1472 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1473 if (p == null) { 1474 writeString(null); 1475 return; 1476 } 1477 writeParcelableCreator(p); 1478 p.writeToParcel(this, parcelableFlags); 1479 } 1480 1481 /** @hide */ 1482 public final void writeParcelableCreator(Parcelable p) { 1483 String name = p.getClass().getName(); 1484 writeString(name); 1485 } 1486 1487 /** 1488 * Write a generic serializable object in to a Parcel. It is strongly 1489 * recommended that this method be avoided, since the serialization 1490 * overhead is extremely large, and this approach will be much slower than 1491 * using the other approaches to writing data in to a Parcel. 1492 */ 1493 public final void writeSerializable(Serializable s) { 1494 if (s == null) { 1495 writeString(null); 1496 return; 1497 } 1498 String name = s.getClass().getName(); 1499 writeString(name); 1500 1501 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1502 try { 1503 ObjectOutputStream oos = new ObjectOutputStream(baos); 1504 oos.writeObject(s); 1505 oos.close(); 1506 1507 writeByteArray(baos.toByteArray()); 1508 } catch (IOException ioe) { 1509 throw new RuntimeException("Parcelable encountered " + 1510 "IOException writing serializable object (name = " + name + 1511 ")", ioe); 1512 } 1513 } 1514 1515 /** 1516 * Special function for writing an exception result at the header of 1517 * a parcel, to be used when returning an exception from a transaction. 1518 * Note that this currently only supports a few exception types; any other 1519 * exception will be re-thrown by this function as a RuntimeException 1520 * (to be caught by the system's last-resort exception handling when 1521 * dispatching a transaction). 1522 * 1523 * <p>The supported exception types are: 1524 * <ul> 1525 * <li>{@link BadParcelableException} 1526 * <li>{@link IllegalArgumentException} 1527 * <li>{@link IllegalStateException} 1528 * <li>{@link NullPointerException} 1529 * <li>{@link SecurityException} 1530 * <li>{@link NetworkOnMainThreadException} 1531 * </ul> 1532 * 1533 * @param e The Exception to be written. 1534 * 1535 * @see #writeNoException 1536 * @see #readException 1537 */ 1538 public final void writeException(Exception e) { 1539 int code = 0; 1540 if (e instanceof SecurityException) { 1541 code = EX_SECURITY; 1542 } else if (e instanceof BadParcelableException) { 1543 code = EX_BAD_PARCELABLE; 1544 } else if (e instanceof IllegalArgumentException) { 1545 code = EX_ILLEGAL_ARGUMENT; 1546 } else if (e instanceof NullPointerException) { 1547 code = EX_NULL_POINTER; 1548 } else if (e instanceof IllegalStateException) { 1549 code = EX_ILLEGAL_STATE; 1550 } else if (e instanceof NetworkOnMainThreadException) { 1551 code = EX_NETWORK_MAIN_THREAD; 1552 } else if (e instanceof UnsupportedOperationException) { 1553 code = EX_UNSUPPORTED_OPERATION; 1554 } else if (e instanceof ServiceSpecificException) { 1555 code = EX_SERVICE_SPECIFIC; 1556 } 1557 writeInt(code); 1558 StrictMode.clearGatheredViolations(); 1559 if (code == 0) { 1560 if (e instanceof RuntimeException) { 1561 throw (RuntimeException) e; 1562 } 1563 throw new RuntimeException(e); 1564 } 1565 writeString(e.getMessage()); 1566 if (e instanceof ServiceSpecificException) { 1567 writeInt(((ServiceSpecificException)e).errorCode); 1568 } 1569 } 1570 1571 /** 1572 * Special function for writing information at the front of the Parcel 1573 * indicating that no exception occurred. 1574 * 1575 * @see #writeException 1576 * @see #readException 1577 */ 1578 public final void writeNoException() { 1579 // Despite the name of this function ("write no exception"), 1580 // it should instead be thought of as "write the RPC response 1581 // header", but because this function name is written out by 1582 // the AIDL compiler, we're not going to rename it. 1583 // 1584 // The response header, in the non-exception case (see also 1585 // writeException above, also called by the AIDL compiler), is 1586 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1587 // StrictMode has gathered up violations that have occurred 1588 // during a Binder call, in which case we write out the number 1589 // of violations and their details, serialized, before the 1590 // actual RPC respons data. The receiving end of this is 1591 // readException(), below. 1592 if (StrictMode.hasGatheredViolations()) { 1593 writeInt(EX_HAS_REPLY_HEADER); 1594 final int sizePosition = dataPosition(); 1595 writeInt(0); // total size of fat header, to be filled in later 1596 StrictMode.writeGatheredViolationsToParcel(this); 1597 final int payloadPosition = dataPosition(); 1598 setDataPosition(sizePosition); 1599 writeInt(payloadPosition - sizePosition); // header size 1600 setDataPosition(payloadPosition); 1601 } else { 1602 writeInt(0); 1603 } 1604 } 1605 1606 /** 1607 * Special function for reading an exception result from the header of 1608 * a parcel, to be used after receiving the result of a transaction. This 1609 * will throw the exception for you if it had been written to the Parcel, 1610 * otherwise return and let you read the normal result data from the Parcel. 1611 * 1612 * @see #writeException 1613 * @see #writeNoException 1614 */ 1615 public final void readException() { 1616 int code = readExceptionCode(); 1617 if (code != 0) { 1618 String msg = readString(); 1619 readException(code, msg); 1620 } 1621 } 1622 1623 /** 1624 * Parses the header of a Binder call's response Parcel and 1625 * returns the exception code. Deals with lite or fat headers. 1626 * In the common successful case, this header is generally zero. 1627 * In less common cases, it's a small negative number and will be 1628 * followed by an error string. 1629 * 1630 * This exists purely for android.database.DatabaseUtils and 1631 * insulating it from having to handle fat headers as returned by 1632 * e.g. StrictMode-induced RPC responses. 1633 * 1634 * @hide 1635 */ 1636 public final int readExceptionCode() { 1637 int code = readInt(); 1638 if (code == EX_HAS_REPLY_HEADER) { 1639 int headerSize = readInt(); 1640 if (headerSize == 0) { 1641 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1642 } else { 1643 // Currently the only thing in the header is StrictMode stacks, 1644 // but discussions around event/RPC tracing suggest we might 1645 // put that here too. If so, switch on sub-header tags here. 1646 // But for now, just parse out the StrictMode stuff. 1647 StrictMode.readAndHandleBinderCallViolations(this); 1648 } 1649 // And fat response headers are currently only used when 1650 // there are no exceptions, so return no error: 1651 return 0; 1652 } 1653 return code; 1654 } 1655 1656 /** 1657 * Throw an exception with the given message. Not intended for use 1658 * outside the Parcel class. 1659 * 1660 * @param code Used to determine which exception class to throw. 1661 * @param msg The exception message. 1662 */ 1663 public final void readException(int code, String msg) { 1664 switch (code) { 1665 case EX_SECURITY: 1666 throw new SecurityException(msg); 1667 case EX_BAD_PARCELABLE: 1668 throw new BadParcelableException(msg); 1669 case EX_ILLEGAL_ARGUMENT: 1670 throw new IllegalArgumentException(msg); 1671 case EX_NULL_POINTER: 1672 throw new NullPointerException(msg); 1673 case EX_ILLEGAL_STATE: 1674 throw new IllegalStateException(msg); 1675 case EX_NETWORK_MAIN_THREAD: 1676 throw new NetworkOnMainThreadException(); 1677 case EX_UNSUPPORTED_OPERATION: 1678 throw new UnsupportedOperationException(msg); 1679 case EX_SERVICE_SPECIFIC: 1680 throw new ServiceSpecificException(readInt(), msg); 1681 } 1682 throw new RuntimeException("Unknown exception code: " + code 1683 + " msg " + msg); 1684 } 1685 1686 /** 1687 * Read an integer value from the parcel at the current dataPosition(). 1688 */ 1689 public final int readInt() { 1690 return nativeReadInt(mNativePtr); 1691 } 1692 1693 /** 1694 * Read a long integer value from the parcel at the current dataPosition(). 1695 */ 1696 public final long readLong() { 1697 return nativeReadLong(mNativePtr); 1698 } 1699 1700 /** 1701 * Read a floating point value from the parcel at the current 1702 * dataPosition(). 1703 */ 1704 public final float readFloat() { 1705 return nativeReadFloat(mNativePtr); 1706 } 1707 1708 /** 1709 * Read a double precision floating point value from the parcel at the 1710 * current dataPosition(). 1711 */ 1712 public final double readDouble() { 1713 return nativeReadDouble(mNativePtr); 1714 } 1715 1716 /** 1717 * Read a string value from the parcel at the current dataPosition(). 1718 */ 1719 public final String readString() { 1720 return nativeReadString(mNativePtr); 1721 } 1722 1723 /** 1724 * Read a CharSequence value from the parcel at the current dataPosition(). 1725 * @hide 1726 */ 1727 public final CharSequence readCharSequence() { 1728 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1729 } 1730 1731 /** 1732 * Read an object from the parcel at the current dataPosition(). 1733 */ 1734 public final IBinder readStrongBinder() { 1735 return nativeReadStrongBinder(mNativePtr); 1736 } 1737 1738 /** 1739 * Read a FileDescriptor from the parcel at the current dataPosition(). 1740 */ 1741 public final ParcelFileDescriptor readFileDescriptor() { 1742 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1743 return fd != null ? new ParcelFileDescriptor(fd) : null; 1744 } 1745 1746 /** {@hide} */ 1747 public final FileDescriptor readRawFileDescriptor() { 1748 return nativeReadFileDescriptor(mNativePtr); 1749 } 1750 1751 /** 1752 * {@hide} 1753 * Read and return a new array of FileDescriptors from the parcel. 1754 * @return the FileDescriptor array, or null if the array is null. 1755 **/ 1756 public final FileDescriptor[] createRawFileDescriptorArray() { 1757 int N = readInt(); 1758 if (N < 0) { 1759 return null; 1760 } 1761 FileDescriptor[] f = new FileDescriptor[N]; 1762 for (int i = 0; i < N; i++) { 1763 f[i] = readRawFileDescriptor(); 1764 } 1765 return f; 1766 } 1767 1768 /** 1769 * {@hide} 1770 * Read an array of FileDescriptors from a parcel. 1771 * The passed array must be exactly the length of the array in the parcel. 1772 * @return the FileDescriptor array, or null if the array is null. 1773 **/ 1774 public final void readRawFileDescriptorArray(FileDescriptor[] val) { 1775 int N = readInt(); 1776 if (N == val.length) { 1777 for (int i=0; i<N; i++) { 1778 val[i] = readRawFileDescriptor(); 1779 } 1780 } else { 1781 throw new RuntimeException("bad array lengths"); 1782 } 1783 } 1784 1785 1786 /*package*/ static native FileDescriptor openFileDescriptor(String file, 1787 int mode) throws FileNotFoundException; 1788 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 1789 throws IOException; 1790 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 1791 throws IOException; 1792 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 1793 1794 /** 1795 * Read a byte value from the parcel at the current dataPosition(). 1796 */ 1797 public final byte readByte() { 1798 return (byte)(readInt() & 0xff); 1799 } 1800 1801 /** 1802 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1803 * been written with {@link #writeBundle}. Read into an existing Map object 1804 * from the parcel at the current dataPosition(). 1805 */ 1806 public final void readMap(Map outVal, ClassLoader loader) { 1807 int N = readInt(); 1808 readMapInternal(outVal, N, loader); 1809 } 1810 1811 /** 1812 * Read into an existing List object from the parcel at the current 1813 * dataPosition(), using the given class loader to load any enclosed 1814 * Parcelables. If it is null, the default class loader is used. 1815 */ 1816 public final void readList(List outVal, ClassLoader loader) { 1817 int N = readInt(); 1818 readListInternal(outVal, N, loader); 1819 } 1820 1821 /** 1822 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1823 * been written with {@link #writeBundle}. Read and return a new HashMap 1824 * object from the parcel at the current dataPosition(), using the given 1825 * class loader to load any enclosed Parcelables. Returns null if 1826 * the previously written map object was null. 1827 */ 1828 public final HashMap readHashMap(ClassLoader loader) 1829 { 1830 int N = readInt(); 1831 if (N < 0) { 1832 return null; 1833 } 1834 HashMap m = new HashMap(N); 1835 readMapInternal(m, N, loader); 1836 return m; 1837 } 1838 1839 /** 1840 * Read and return a new Bundle object from the parcel at the current 1841 * dataPosition(). Returns null if the previously written Bundle object was 1842 * null. 1843 */ 1844 public final Bundle readBundle() { 1845 return readBundle(null); 1846 } 1847 1848 /** 1849 * Read and return a new Bundle object from the parcel at the current 1850 * dataPosition(), using the given class loader to initialize the class 1851 * loader of the Bundle for later retrieval of Parcelable objects. 1852 * Returns null if the previously written Bundle object was null. 1853 */ 1854 public final Bundle readBundle(ClassLoader loader) { 1855 int length = readInt(); 1856 if (length < 0) { 1857 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1858 return null; 1859 } 1860 1861 final Bundle bundle = new Bundle(this, length); 1862 if (loader != null) { 1863 bundle.setClassLoader(loader); 1864 } 1865 return bundle; 1866 } 1867 1868 /** 1869 * Read and return a new Bundle object from the parcel at the current 1870 * dataPosition(). Returns null if the previously written Bundle object was 1871 * null. 1872 */ 1873 public final PersistableBundle readPersistableBundle() { 1874 return readPersistableBundle(null); 1875 } 1876 1877 /** 1878 * Read and return a new Bundle object from the parcel at the current 1879 * dataPosition(), using the given class loader to initialize the class 1880 * loader of the Bundle for later retrieval of Parcelable objects. 1881 * Returns null if the previously written Bundle object was null. 1882 */ 1883 public final PersistableBundle readPersistableBundle(ClassLoader loader) { 1884 int length = readInt(); 1885 if (length < 0) { 1886 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1887 return null; 1888 } 1889 1890 final PersistableBundle bundle = new PersistableBundle(this, length); 1891 if (loader != null) { 1892 bundle.setClassLoader(loader); 1893 } 1894 return bundle; 1895 } 1896 1897 /** 1898 * Read a Size from the parcel at the current dataPosition(). 1899 */ 1900 public final Size readSize() { 1901 final int width = readInt(); 1902 final int height = readInt(); 1903 return new Size(width, height); 1904 } 1905 1906 /** 1907 * Read a SizeF from the parcel at the current dataPosition(). 1908 */ 1909 public final SizeF readSizeF() { 1910 final float width = readFloat(); 1911 final float height = readFloat(); 1912 return new SizeF(width, height); 1913 } 1914 1915 /** 1916 * Read and return a byte[] object from the parcel. 1917 */ 1918 public final byte[] createByteArray() { 1919 return nativeCreateByteArray(mNativePtr); 1920 } 1921 1922 /** 1923 * Read a byte[] object from the parcel and copy it into the 1924 * given byte array. 1925 */ 1926 public final void readByteArray(byte[] val) { 1927 // TODO: make this a native method to avoid the extra copy. 1928 byte[] ba = createByteArray(); 1929 if (ba.length == val.length) { 1930 System.arraycopy(ba, 0, val, 0, ba.length); 1931 } else { 1932 throw new RuntimeException("bad array lengths"); 1933 } 1934 } 1935 1936 /** 1937 * Read a blob of data from the parcel and return it as a byte array. 1938 * {@hide} 1939 * {@SystemApi} 1940 */ 1941 public final byte[] readBlob() { 1942 return nativeReadBlob(mNativePtr); 1943 } 1944 1945 /** 1946 * Read and return a String[] object from the parcel. 1947 * {@hide} 1948 */ 1949 public final String[] readStringArray() { 1950 String[] array = null; 1951 1952 int length = readInt(); 1953 if (length >= 0) 1954 { 1955 array = new String[length]; 1956 1957 for (int i = 0 ; i < length ; i++) 1958 { 1959 array[i] = readString(); 1960 } 1961 } 1962 1963 return array; 1964 } 1965 1966 /** 1967 * Read and return a CharSequence[] object from the parcel. 1968 * {@hide} 1969 */ 1970 public final CharSequence[] readCharSequenceArray() { 1971 CharSequence[] array = null; 1972 1973 int length = readInt(); 1974 if (length >= 0) 1975 { 1976 array = new CharSequence[length]; 1977 1978 for (int i = 0 ; i < length ; i++) 1979 { 1980 array[i] = readCharSequence(); 1981 } 1982 } 1983 1984 return array; 1985 } 1986 1987 /** 1988 * Read and return an ArrayList<CharSequence> object from the parcel. 1989 * {@hide} 1990 */ 1991 public final ArrayList<CharSequence> readCharSequenceList() { 1992 ArrayList<CharSequence> array = null; 1993 1994 int length = readInt(); 1995 if (length >= 0) { 1996 array = new ArrayList<CharSequence>(length); 1997 1998 for (int i = 0 ; i < length ; i++) { 1999 array.add(readCharSequence()); 2000 } 2001 } 2002 2003 return array; 2004 } 2005 2006 /** 2007 * Read and return a new ArrayList object from the parcel at the current 2008 * dataPosition(). Returns null if the previously written list object was 2009 * null. The given class loader will be used to load any enclosed 2010 * Parcelables. 2011 */ 2012 public final ArrayList readArrayList(ClassLoader loader) { 2013 int N = readInt(); 2014 if (N < 0) { 2015 return null; 2016 } 2017 ArrayList l = new ArrayList(N); 2018 readListInternal(l, N, loader); 2019 return l; 2020 } 2021 2022 /** 2023 * Read and return a new Object array from the parcel at the current 2024 * dataPosition(). Returns null if the previously written array was 2025 * null. The given class loader will be used to load any enclosed 2026 * Parcelables. 2027 */ 2028 public final Object[] readArray(ClassLoader loader) { 2029 int N = readInt(); 2030 if (N < 0) { 2031 return null; 2032 } 2033 Object[] l = new Object[N]; 2034 readArrayInternal(l, N, loader); 2035 return l; 2036 } 2037 2038 /** 2039 * Read and return a new SparseArray object from the parcel at the current 2040 * dataPosition(). Returns null if the previously written list object was 2041 * null. The given class loader will be used to load any enclosed 2042 * Parcelables. 2043 */ 2044 public final SparseArray readSparseArray(ClassLoader loader) { 2045 int N = readInt(); 2046 if (N < 0) { 2047 return null; 2048 } 2049 SparseArray sa = new SparseArray(N); 2050 readSparseArrayInternal(sa, N, loader); 2051 return sa; 2052 } 2053 2054 /** 2055 * Read and return a new SparseBooleanArray object from the parcel at the current 2056 * dataPosition(). Returns null if the previously written list object was 2057 * null. 2058 */ 2059 public final SparseBooleanArray readSparseBooleanArray() { 2060 int N = readInt(); 2061 if (N < 0) { 2062 return null; 2063 } 2064 SparseBooleanArray sa = new SparseBooleanArray(N); 2065 readSparseBooleanArrayInternal(sa, N); 2066 return sa; 2067 } 2068 2069 /** 2070 * Read and return a new ArrayList containing a particular object type from 2071 * the parcel that was written with {@link #writeTypedList} at the 2072 * current dataPosition(). Returns null if the 2073 * previously written list object was null. The list <em>must</em> have 2074 * previously been written via {@link #writeTypedList} with the same object 2075 * type. 2076 * 2077 * @return A newly created ArrayList containing objects with the same data 2078 * as those that were previously written. 2079 * 2080 * @see #writeTypedList 2081 */ 2082 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 2083 int N = readInt(); 2084 if (N < 0) { 2085 return null; 2086 } 2087 ArrayList<T> l = new ArrayList<T>(N); 2088 while (N > 0) { 2089 if (readInt() != 0) { 2090 l.add(c.createFromParcel(this)); 2091 } else { 2092 l.add(null); 2093 } 2094 N--; 2095 } 2096 return l; 2097 } 2098 2099 /** 2100 * Read into the given List items containing a particular object type 2101 * that were written with {@link #writeTypedList} at the 2102 * current dataPosition(). The list <em>must</em> have 2103 * previously been written via {@link #writeTypedList} with the same object 2104 * type. 2105 * 2106 * @return A newly created ArrayList containing objects with the same data 2107 * as those that were previously written. 2108 * 2109 * @see #writeTypedList 2110 */ 2111 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 2112 int M = list.size(); 2113 int N = readInt(); 2114 int i = 0; 2115 for (; i < M && i < N; i++) { 2116 if (readInt() != 0) { 2117 list.set(i, c.createFromParcel(this)); 2118 } else { 2119 list.set(i, null); 2120 } 2121 } 2122 for (; i<N; i++) { 2123 if (readInt() != 0) { 2124 list.add(c.createFromParcel(this)); 2125 } else { 2126 list.add(null); 2127 } 2128 } 2129 for (; i<M; i++) { 2130 list.remove(N); 2131 } 2132 } 2133 2134 /** 2135 * Read and return a new ArrayList containing String objects from 2136 * the parcel that was written with {@link #writeStringList} at the 2137 * current dataPosition(). Returns null if the 2138 * previously written list object was null. 2139 * 2140 * @return A newly created ArrayList containing strings with the same data 2141 * as those that were previously written. 2142 * 2143 * @see #writeStringList 2144 */ 2145 public final ArrayList<String> createStringArrayList() { 2146 int N = readInt(); 2147 if (N < 0) { 2148 return null; 2149 } 2150 ArrayList<String> l = new ArrayList<String>(N); 2151 while (N > 0) { 2152 l.add(readString()); 2153 N--; 2154 } 2155 return l; 2156 } 2157 2158 /** 2159 * Read and return a new ArrayList containing IBinder objects from 2160 * the parcel that was written with {@link #writeBinderList} at the 2161 * current dataPosition(). Returns null if the 2162 * previously written list object was null. 2163 * 2164 * @return A newly created ArrayList containing strings with the same data 2165 * as those that were previously written. 2166 * 2167 * @see #writeBinderList 2168 */ 2169 public final ArrayList<IBinder> createBinderArrayList() { 2170 int N = readInt(); 2171 if (N < 0) { 2172 return null; 2173 } 2174 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 2175 while (N > 0) { 2176 l.add(readStrongBinder()); 2177 N--; 2178 } 2179 return l; 2180 } 2181 2182 /** 2183 * Read into the given List items String objects that were written with 2184 * {@link #writeStringList} at the current dataPosition(). 2185 * 2186 * @return A newly created ArrayList containing strings with the same data 2187 * as those that were previously written. 2188 * 2189 * @see #writeStringList 2190 */ 2191 public final void readStringList(List<String> list) { 2192 int M = list.size(); 2193 int N = readInt(); 2194 int i = 0; 2195 for (; i < M && i < N; i++) { 2196 list.set(i, readString()); 2197 } 2198 for (; i<N; i++) { 2199 list.add(readString()); 2200 } 2201 for (; i<M; i++) { 2202 list.remove(N); 2203 } 2204 } 2205 2206 /** 2207 * Read into the given List items IBinder objects that were written with 2208 * {@link #writeBinderList} at the current dataPosition(). 2209 * 2210 * @return A newly created ArrayList containing strings with the same data 2211 * as those that were previously written. 2212 * 2213 * @see #writeBinderList 2214 */ 2215 public final void readBinderList(List<IBinder> list) { 2216 int M = list.size(); 2217 int N = readInt(); 2218 int i = 0; 2219 for (; i < M && i < N; i++) { 2220 list.set(i, readStrongBinder()); 2221 } 2222 for (; i<N; i++) { 2223 list.add(readStrongBinder()); 2224 } 2225 for (; i<M; i++) { 2226 list.remove(N); 2227 } 2228 } 2229 2230 /** 2231 * Read and return a new array containing a particular object type from 2232 * the parcel at the current dataPosition(). Returns null if the 2233 * previously written array was null. The array <em>must</em> have 2234 * previously been written via {@link #writeTypedArray} with the same 2235 * object type. 2236 * 2237 * @return A newly created array containing objects with the same data 2238 * as those that were previously written. 2239 * 2240 * @see #writeTypedArray 2241 */ 2242 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 2243 int N = readInt(); 2244 if (N < 0) { 2245 return null; 2246 } 2247 T[] l = c.newArray(N); 2248 for (int i=0; i<N; i++) { 2249 if (readInt() != 0) { 2250 l[i] = c.createFromParcel(this); 2251 } 2252 } 2253 return l; 2254 } 2255 2256 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 2257 int N = readInt(); 2258 if (N == val.length) { 2259 for (int i=0; i<N; i++) { 2260 if (readInt() != 0) { 2261 val[i] = c.createFromParcel(this); 2262 } else { 2263 val[i] = null; 2264 } 2265 } 2266 } else { 2267 throw new RuntimeException("bad array lengths"); 2268 } 2269 } 2270 2271 /** 2272 * @deprecated 2273 * @hide 2274 */ 2275 @Deprecated 2276 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 2277 return createTypedArray(c); 2278 } 2279 2280 /** 2281 * Read and return a typed Parcelable object from a parcel. 2282 * Returns null if the previous written object was null. 2283 * The object <em>must</em> have previous been written via 2284 * {@link #writeTypedObject} with the same object type. 2285 * 2286 * @return A newly created object of the type that was previously 2287 * written. 2288 * 2289 * @see #writeTypedObject 2290 */ 2291 public final <T> T readTypedObject(Parcelable.Creator<T> c) { 2292 if (readInt() != 0) { 2293 return c.createFromParcel(this); 2294 } else { 2295 return null; 2296 } 2297 } 2298 2299 /** 2300 * Write a heterogeneous array of Parcelable objects into the Parcel. 2301 * Each object in the array is written along with its class name, so 2302 * that the correct class can later be instantiated. As a result, this 2303 * has significantly more overhead than {@link #writeTypedArray}, but will 2304 * correctly handle an array containing more than one type of object. 2305 * 2306 * @param value The array of objects to be written. 2307 * @param parcelableFlags Contextual flags as per 2308 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 2309 * 2310 * @see #writeTypedArray 2311 */ 2312 public final <T extends Parcelable> void writeParcelableArray(T[] value, 2313 int parcelableFlags) { 2314 if (value != null) { 2315 int N = value.length; 2316 writeInt(N); 2317 for (int i=0; i<N; i++) { 2318 writeParcelable(value[i], parcelableFlags); 2319 } 2320 } else { 2321 writeInt(-1); 2322 } 2323 } 2324 2325 /** 2326 * Read a typed object from a parcel. The given class loader will be 2327 * used to load any enclosed Parcelables. If it is null, the default class 2328 * loader will be used. 2329 */ 2330 public final Object readValue(ClassLoader loader) { 2331 int type = readInt(); 2332 2333 switch (type) { 2334 case VAL_NULL: 2335 return null; 2336 2337 case VAL_STRING: 2338 return readString(); 2339 2340 case VAL_INTEGER: 2341 return readInt(); 2342 2343 case VAL_MAP: 2344 return readHashMap(loader); 2345 2346 case VAL_PARCELABLE: 2347 return readParcelable(loader); 2348 2349 case VAL_SHORT: 2350 return (short) readInt(); 2351 2352 case VAL_LONG: 2353 return readLong(); 2354 2355 case VAL_FLOAT: 2356 return readFloat(); 2357 2358 case VAL_DOUBLE: 2359 return readDouble(); 2360 2361 case VAL_BOOLEAN: 2362 return readInt() == 1; 2363 2364 case VAL_CHARSEQUENCE: 2365 return readCharSequence(); 2366 2367 case VAL_LIST: 2368 return readArrayList(loader); 2369 2370 case VAL_BOOLEANARRAY: 2371 return createBooleanArray(); 2372 2373 case VAL_BYTEARRAY: 2374 return createByteArray(); 2375 2376 case VAL_STRINGARRAY: 2377 return readStringArray(); 2378 2379 case VAL_CHARSEQUENCEARRAY: 2380 return readCharSequenceArray(); 2381 2382 case VAL_IBINDER: 2383 return readStrongBinder(); 2384 2385 case VAL_OBJECTARRAY: 2386 return readArray(loader); 2387 2388 case VAL_INTARRAY: 2389 return createIntArray(); 2390 2391 case VAL_LONGARRAY: 2392 return createLongArray(); 2393 2394 case VAL_BYTE: 2395 return readByte(); 2396 2397 case VAL_SERIALIZABLE: 2398 return readSerializable(loader); 2399 2400 case VAL_PARCELABLEARRAY: 2401 return readParcelableArray(loader); 2402 2403 case VAL_SPARSEARRAY: 2404 return readSparseArray(loader); 2405 2406 case VAL_SPARSEBOOLEANARRAY: 2407 return readSparseBooleanArray(); 2408 2409 case VAL_BUNDLE: 2410 return readBundle(loader); // loading will be deferred 2411 2412 case VAL_PERSISTABLEBUNDLE: 2413 return readPersistableBundle(loader); 2414 2415 case VAL_SIZE: 2416 return readSize(); 2417 2418 case VAL_SIZEF: 2419 return readSizeF(); 2420 2421 case VAL_DOUBLEARRAY: 2422 return createDoubleArray(); 2423 2424 default: 2425 int off = dataPosition() - 4; 2426 throw new RuntimeException( 2427 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2428 } 2429 } 2430 2431 /** 2432 * Read and return a new Parcelable from the parcel. The given class loader 2433 * will be used to load any enclosed Parcelables. If it is null, the default 2434 * class loader will be used. 2435 * @param loader A ClassLoader from which to instantiate the Parcelable 2436 * object, or null for the default class loader. 2437 * @return Returns the newly created Parcelable, or null if a null 2438 * object has been written. 2439 * @throws BadParcelableException Throws BadParcelableException if there 2440 * was an error trying to instantiate the Parcelable. 2441 */ 2442 @SuppressWarnings("unchecked") 2443 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2444 Parcelable.Creator<?> creator = readParcelableCreator(loader); 2445 if (creator == null) { 2446 return null; 2447 } 2448 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2449 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2450 (Parcelable.ClassLoaderCreator<?>) creator; 2451 return (T) classLoaderCreator.createFromParcel(this, loader); 2452 } 2453 return (T) creator.createFromParcel(this); 2454 } 2455 2456 /** @hide */ 2457 @SuppressWarnings("unchecked") 2458 public final <T extends Parcelable> T readCreator(Parcelable.Creator<?> creator, 2459 ClassLoader loader) { 2460 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2461 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2462 (Parcelable.ClassLoaderCreator<?>) creator; 2463 return (T) classLoaderCreator.createFromParcel(this, loader); 2464 } 2465 return (T) creator.createFromParcel(this); 2466 } 2467 2468 /** @hide */ 2469 public final Parcelable.Creator<?> readParcelableCreator(ClassLoader loader) { 2470 String name = readString(); 2471 if (name == null) { 2472 return null; 2473 } 2474 Parcelable.Creator<?> creator; 2475 synchronized (mCreators) { 2476 HashMap<String,Parcelable.Creator<?>> map = mCreators.get(loader); 2477 if (map == null) { 2478 map = new HashMap<>(); 2479 mCreators.put(loader, map); 2480 } 2481 creator = map.get(name); 2482 if (creator == null) { 2483 try { 2484 // If loader == null, explicitly emulate Class.forName(String) "caller 2485 // classloader" behavior. 2486 ClassLoader parcelableClassLoader = 2487 (loader == null ? getClass().getClassLoader() : loader); 2488 // Avoid initializing the Parcelable class until we know it implements 2489 // Parcelable and has the necessary CREATOR field. http://b/1171613. 2490 Class<?> parcelableClass = Class.forName(name, false /* initialize */, 2491 parcelableClassLoader); 2492 if (!Parcelable.class.isAssignableFrom(parcelableClass)) { 2493 throw new BadParcelableException("Parcelable protocol requires that the " 2494 + "class implements Parcelable"); 2495 } 2496 Field f = parcelableClass.getField("CREATOR"); 2497 if ((f.getModifiers() & Modifier.STATIC) == 0) { 2498 throw new BadParcelableException("Parcelable protocol requires " 2499 + "the CREATOR object to be static on class " + name); 2500 } 2501 Class<?> creatorType = f.getType(); 2502 if (!Parcelable.Creator.class.isAssignableFrom(creatorType)) { 2503 // Fail before calling Field.get(), not after, to avoid initializing 2504 // parcelableClass unnecessarily. 2505 throw new BadParcelableException("Parcelable protocol requires a " 2506 + "Parcelable.Creator object called " 2507 + "CREATOR on class " + name); 2508 } 2509 creator = (Parcelable.Creator<?>) f.get(null); 2510 } 2511 catch (IllegalAccessException e) { 2512 Log.e(TAG, "Illegal access when unmarshalling: " + name, e); 2513 throw new BadParcelableException( 2514 "IllegalAccessException when unmarshalling: " + name); 2515 } 2516 catch (ClassNotFoundException e) { 2517 Log.e(TAG, "Class not found when unmarshalling: " + name, e); 2518 throw new BadParcelableException( 2519 "ClassNotFoundException when unmarshalling: " + name); 2520 } 2521 catch (NoSuchFieldException e) { 2522 throw new BadParcelableException("Parcelable protocol requires a " 2523 + "Parcelable.Creator object called " 2524 + "CREATOR on class " + name); 2525 } 2526 if (creator == null) { 2527 throw new BadParcelableException("Parcelable protocol requires a " 2528 + "non-null Parcelable.Creator object called " 2529 + "CREATOR on class " + name); 2530 } 2531 2532 map.put(name, creator); 2533 } 2534 } 2535 2536 return creator; 2537 } 2538 2539 /** 2540 * Read and return a new Parcelable array from the parcel. 2541 * The given class loader will be used to load any enclosed 2542 * Parcelables. 2543 * @return the Parcelable array, or null if the array is null 2544 */ 2545 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2546 int N = readInt(); 2547 if (N < 0) { 2548 return null; 2549 } 2550 Parcelable[] p = new Parcelable[N]; 2551 for (int i = 0; i < N; i++) { 2552 p[i] = readParcelable(loader); 2553 } 2554 return p; 2555 } 2556 2557 /** 2558 * Read and return a new Serializable object from the parcel. 2559 * @return the Serializable object, or null if the Serializable name 2560 * wasn't found in the parcel. 2561 */ 2562 public final Serializable readSerializable() { 2563 return readSerializable(null); 2564 } 2565 2566 private final Serializable readSerializable(final ClassLoader loader) { 2567 String name = readString(); 2568 if (name == null) { 2569 // For some reason we were unable to read the name of the Serializable (either there 2570 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2571 // return null, which indicates that the name wasn't found in the parcel. 2572 return null; 2573 } 2574 2575 byte[] serializedData = createByteArray(); 2576 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2577 try { 2578 ObjectInputStream ois = new ObjectInputStream(bais) { 2579 @Override 2580 protected Class<?> resolveClass(ObjectStreamClass osClass) 2581 throws IOException, ClassNotFoundException { 2582 // try the custom classloader if provided 2583 if (loader != null) { 2584 Class<?> c = Class.forName(osClass.getName(), false, loader); 2585 if (c != null) { 2586 return c; 2587 } 2588 } 2589 return super.resolveClass(osClass); 2590 } 2591 }; 2592 return (Serializable) ois.readObject(); 2593 } catch (IOException ioe) { 2594 throw new RuntimeException("Parcelable encountered " + 2595 "IOException reading a Serializable object (name = " + name + 2596 ")", ioe); 2597 } catch (ClassNotFoundException cnfe) { 2598 throw new RuntimeException("Parcelable encountered " + 2599 "ClassNotFoundException reading a Serializable object (name = " 2600 + name + ")", cnfe); 2601 } 2602 } 2603 2604 // Cache of previously looked up CREATOR.createFromParcel() methods for 2605 // particular classes. Keys are the names of the classes, values are 2606 // Method objects. 2607 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator<?>>> 2608 mCreators = new HashMap<>(); 2609 2610 /** @hide for internal use only. */ 2611 static protected final Parcel obtain(int obj) { 2612 throw new UnsupportedOperationException(); 2613 } 2614 2615 /** @hide */ 2616 static protected final Parcel obtain(long obj) { 2617 final Parcel[] pool = sHolderPool; 2618 synchronized (pool) { 2619 Parcel p; 2620 for (int i=0; i<POOL_SIZE; i++) { 2621 p = pool[i]; 2622 if (p != null) { 2623 pool[i] = null; 2624 if (DEBUG_RECYCLE) { 2625 p.mStack = new RuntimeException(); 2626 } 2627 p.init(obj); 2628 return p; 2629 } 2630 } 2631 } 2632 return new Parcel(obj); 2633 } 2634 2635 private Parcel(long nativePtr) { 2636 if (DEBUG_RECYCLE) { 2637 mStack = new RuntimeException(); 2638 } 2639 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2640 init(nativePtr); 2641 } 2642 2643 private void init(long nativePtr) { 2644 if (nativePtr != 0) { 2645 mNativePtr = nativePtr; 2646 mOwnsNativeParcelObject = false; 2647 } else { 2648 mNativePtr = nativeCreate(); 2649 mOwnsNativeParcelObject = true; 2650 } 2651 } 2652 2653 private void freeBuffer() { 2654 if (mOwnsNativeParcelObject) { 2655 updateNativeSize(nativeFreeBuffer(mNativePtr)); 2656 } 2657 } 2658 2659 private void destroy() { 2660 if (mNativePtr != 0) { 2661 if (mOwnsNativeParcelObject) { 2662 nativeDestroy(mNativePtr); 2663 updateNativeSize(0); 2664 } 2665 mNativePtr = 0; 2666 } 2667 } 2668 2669 @Override 2670 protected void finalize() throws Throwable { 2671 if (DEBUG_RECYCLE) { 2672 if (mStack != null) { 2673 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2674 } 2675 } 2676 destroy(); 2677 } 2678 2679 /* package */ void readMapInternal(Map outVal, int N, 2680 ClassLoader loader) { 2681 while (N > 0) { 2682 Object key = readValue(loader); 2683 Object value = readValue(loader); 2684 outVal.put(key, value); 2685 N--; 2686 } 2687 } 2688 2689 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2690 ClassLoader loader) { 2691 if (DEBUG_ARRAY_MAP) { 2692 RuntimeException here = new RuntimeException("here"); 2693 here.fillInStackTrace(); 2694 Log.d(TAG, "Reading " + N + " ArrayMap entries", here); 2695 } 2696 int startPos; 2697 while (N > 0) { 2698 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 2699 String key = readString(); 2700 Object value = readValue(loader); 2701 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read #" + (N-1) + " " 2702 + (dataPosition()-startPos) + " bytes: key=0x" 2703 + Integer.toHexString((key != null ? key.hashCode() : 0)) + " " + key); 2704 outVal.append(key, value); 2705 N--; 2706 } 2707 outVal.validate(); 2708 } 2709 2710 /* package */ void readArrayMapSafelyInternal(ArrayMap outVal, int N, 2711 ClassLoader loader) { 2712 if (DEBUG_ARRAY_MAP) { 2713 RuntimeException here = new RuntimeException("here"); 2714 here.fillInStackTrace(); 2715 Log.d(TAG, "Reading safely " + N + " ArrayMap entries", here); 2716 } 2717 while (N > 0) { 2718 String key = readString(); 2719 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read safe #" + (N-1) + ": key=0x" 2720 + (key != null ? key.hashCode() : 0) + " " + key); 2721 Object value = readValue(loader); 2722 outVal.put(key, value); 2723 N--; 2724 } 2725 } 2726 2727 /** 2728 * @hide For testing only. 2729 */ 2730 public void readArrayMap(ArrayMap outVal, ClassLoader loader) { 2731 final int N = readInt(); 2732 if (N < 0) { 2733 return; 2734 } 2735 readArrayMapInternal(outVal, N, loader); 2736 } 2737 2738 private void readListInternal(List outVal, int N, 2739 ClassLoader loader) { 2740 while (N > 0) { 2741 Object value = readValue(loader); 2742 //Log.d(TAG, "Unmarshalling value=" + value); 2743 outVal.add(value); 2744 N--; 2745 } 2746 } 2747 2748 private void readArrayInternal(Object[] outVal, int N, 2749 ClassLoader loader) { 2750 for (int i = 0; i < N; i++) { 2751 Object value = readValue(loader); 2752 //Log.d(TAG, "Unmarshalling value=" + value); 2753 outVal[i] = value; 2754 } 2755 } 2756 2757 private void readSparseArrayInternal(SparseArray outVal, int N, 2758 ClassLoader loader) { 2759 while (N > 0) { 2760 int key = readInt(); 2761 Object value = readValue(loader); 2762 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2763 outVal.append(key, value); 2764 N--; 2765 } 2766 } 2767 2768 2769 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 2770 while (N > 0) { 2771 int key = readInt(); 2772 boolean value = this.readByte() == 1; 2773 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2774 outVal.append(key, value); 2775 N--; 2776 } 2777 } 2778 2779 /** 2780 * @hide For testing 2781 */ 2782 public long getBlobAshmemSize() { 2783 return nativeGetBlobAshmemSize(mNativePtr); 2784 } 2785} 2786