Parcel.java revision 80fd1208b99fbb88f24faa5d55183cdbbdeb6777
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.text.TextUtils; 20import android.util.ArrayMap; 21import android.util.Log; 22import android.util.Size; 23import android.util.SizeF; 24import android.util.SparseArray; 25import android.util.SparseBooleanArray; 26 27import java.io.ByteArrayInputStream; 28import java.io.ByteArrayOutputStream; 29import java.io.FileDescriptor; 30import java.io.FileNotFoundException; 31import java.io.IOException; 32import java.io.ObjectInputStream; 33import java.io.ObjectOutputStream; 34import java.io.ObjectStreamClass; 35import java.io.Serializable; 36import java.lang.reflect.Field; 37import java.lang.reflect.Modifier; 38import java.util.ArrayList; 39import java.util.Arrays; 40import java.util.HashMap; 41import java.util.List; 42import java.util.Map; 43import java.util.Set; 44 45/** 46 * Container for a message (data and object references) that can 47 * be sent through an IBinder. A Parcel can contain both flattened data 48 * that will be unflattened on the other side of the IPC (using the various 49 * methods here for writing specific types, or the general 50 * {@link Parcelable} interface), and references to live {@link IBinder} 51 * objects that will result in the other side receiving a proxy IBinder 52 * connected with the original IBinder in the Parcel. 53 * 54 * <p class="note">Parcel is <strong>not</strong> a general-purpose 55 * serialization mechanism. This class (and the corresponding 56 * {@link Parcelable} API for placing arbitrary objects into a Parcel) is 57 * designed as a high-performance IPC transport. As such, it is not 58 * appropriate to place any Parcel data in to persistent storage: changes 59 * in the underlying implementation of any of the data in the Parcel can 60 * render older data unreadable.</p> 61 * 62 * <p>The bulk of the Parcel API revolves around reading and writing data 63 * of various types. There are six major classes of such functions available.</p> 64 * 65 * <h3>Primitives</h3> 66 * 67 * <p>The most basic data functions are for writing and reading primitive 68 * data types: {@link #writeByte}, {@link #readByte}, {@link #writeDouble}, 69 * {@link #readDouble}, {@link #writeFloat}, {@link #readFloat}, {@link #writeInt}, 70 * {@link #readInt}, {@link #writeLong}, {@link #readLong}, 71 * {@link #writeString}, {@link #readString}. Most other 72 * data operations are built on top of these. The given data is written and 73 * read using the endianess of the host CPU.</p> 74 * 75 * <h3>Primitive Arrays</h3> 76 * 77 * <p>There are a variety of methods for reading and writing raw arrays 78 * of primitive objects, which generally result in writing a 4-byte length 79 * followed by the primitive data items. The methods for reading can either 80 * read the data into an existing array, or create and return a new array. 81 * These available types are:</p> 82 * 83 * <ul> 84 * <li> {@link #writeBooleanArray(boolean[])}, 85 * {@link #readBooleanArray(boolean[])}, {@link #createBooleanArray()} 86 * <li> {@link #writeByteArray(byte[])}, 87 * {@link #writeByteArray(byte[], int, int)}, {@link #readByteArray(byte[])}, 88 * {@link #createByteArray()} 89 * <li> {@link #writeCharArray(char[])}, {@link #readCharArray(char[])}, 90 * {@link #createCharArray()} 91 * <li> {@link #writeDoubleArray(double[])}, {@link #readDoubleArray(double[])}, 92 * {@link #createDoubleArray()} 93 * <li> {@link #writeFloatArray(float[])}, {@link #readFloatArray(float[])}, 94 * {@link #createFloatArray()} 95 * <li> {@link #writeIntArray(int[])}, {@link #readIntArray(int[])}, 96 * {@link #createIntArray()} 97 * <li> {@link #writeLongArray(long[])}, {@link #readLongArray(long[])}, 98 * {@link #createLongArray()} 99 * <li> {@link #writeStringArray(String[])}, {@link #readStringArray(String[])}, 100 * {@link #createStringArray()}. 101 * <li> {@link #writeSparseBooleanArray(SparseBooleanArray)}, 102 * {@link #readSparseBooleanArray()}. 103 * </ul> 104 * 105 * <h3>Parcelables</h3> 106 * 107 * <p>The {@link Parcelable} protocol provides an extremely efficient (but 108 * low-level) protocol for objects to write and read themselves from Parcels. 109 * You can use the direct methods {@link #writeParcelable(Parcelable, int)} 110 * and {@link #readParcelable(ClassLoader)} or 111 * {@link #writeParcelableArray} and 112 * {@link #readParcelableArray(ClassLoader)} to write or read. These 113 * methods write both the class type and its data to the Parcel, allowing 114 * that class to be reconstructed from the appropriate class loader when 115 * later reading.</p> 116 * 117 * <p>There are also some methods that provide a more efficient way to work 118 * with Parcelables: {@link #writeTypedObject}, {@link #writeTypedArray}, 119 * {@link #writeTypedList}, {@link #readTypedObject}, 120 * {@link #createTypedArray} and {@link #createTypedArrayList}. These methods 121 * do not write the class information of the original object: instead, the 122 * caller of the read function must know what type to expect and pass in the 123 * appropriate {@link Parcelable.Creator Parcelable.Creator} instead to 124 * properly construct the new object and read its data. (To more efficient 125 * write and read a single Parceable object that is not null, you can directly 126 * call {@link Parcelable#writeToParcel Parcelable.writeToParcel} and 127 * {@link Parcelable.Creator#createFromParcel Parcelable.Creator.createFromParcel} 128 * yourself.)</p> 129 * 130 * <h3>Bundles</h3> 131 * 132 * <p>A special type-safe container, called {@link Bundle}, is available 133 * for key/value maps of heterogeneous values. This has many optimizations 134 * for improved performance when reading and writing data, and its type-safe 135 * API avoids difficult to debug type errors when finally marshalling the 136 * data contents into a Parcel. The methods to use are 137 * {@link #writeBundle(Bundle)}, {@link #readBundle()}, and 138 * {@link #readBundle(ClassLoader)}. 139 * 140 * <h3>Active Objects</h3> 141 * 142 * <p>An unusual feature of Parcel is the ability to read and write active 143 * objects. For these objects the actual contents of the object is not 144 * written, rather a special token referencing the object is written. When 145 * reading the object back from the Parcel, you do not get a new instance of 146 * the object, but rather a handle that operates on the exact same object that 147 * was originally written. There are two forms of active objects available.</p> 148 * 149 * <p>{@link Binder} objects are a core facility of Android's general cross-process 150 * communication system. The {@link IBinder} interface describes an abstract 151 * protocol with a Binder object. Any such interface can be written in to 152 * a Parcel, and upon reading you will receive either the original object 153 * implementing that interface or a special proxy implementation 154 * that communicates calls back to the original object. The methods to use are 155 * {@link #writeStrongBinder(IBinder)}, 156 * {@link #writeStrongInterface(IInterface)}, {@link #readStrongBinder()}, 157 * {@link #writeBinderArray(IBinder[])}, {@link #readBinderArray(IBinder[])}, 158 * {@link #createBinderArray()}, 159 * {@link #writeBinderList(List)}, {@link #readBinderList(List)}, 160 * {@link #createBinderArrayList()}.</p> 161 * 162 * <p>FileDescriptor objects, representing raw Linux file descriptor identifiers, 163 * can be written and {@link ParcelFileDescriptor} objects returned to operate 164 * on the original file descriptor. The returned file descriptor is a dup 165 * of the original file descriptor: the object and fd is different, but 166 * operating on the same underlying file stream, with the same position, etc. 167 * The methods to use are {@link #writeFileDescriptor(FileDescriptor)}, 168 * {@link #readFileDescriptor()}. 169 * 170 * <h3>Untyped Containers</h3> 171 * 172 * <p>A final class of methods are for writing and reading standard Java 173 * containers of arbitrary types. These all revolve around the 174 * {@link #writeValue(Object)} and {@link #readValue(ClassLoader)} methods 175 * which define the types of objects allowed. The container methods are 176 * {@link #writeArray(Object[])}, {@link #readArray(ClassLoader)}, 177 * {@link #writeList(List)}, {@link #readList(List, ClassLoader)}, 178 * {@link #readArrayList(ClassLoader)}, 179 * {@link #writeMap(Map)}, {@link #readMap(Map, ClassLoader)}, 180 * {@link #writeSparseArray(SparseArray)}, 181 * {@link #readSparseArray(ClassLoader)}. 182 */ 183public final class Parcel { 184 private static final boolean DEBUG_RECYCLE = false; 185 private static final boolean DEBUG_ARRAY_MAP = false; 186 private static final String TAG = "Parcel"; 187 188 @SuppressWarnings({"UnusedDeclaration"}) 189 private long mNativePtr; // used by native code 190 191 /** 192 * Flag indicating if {@link #mNativePtr} was allocated by this object, 193 * indicating that we're responsible for its lifecycle. 194 */ 195 private boolean mOwnsNativeParcelObject; 196 197 private RuntimeException mStack; 198 199 private static final int POOL_SIZE = 6; 200 private static final Parcel[] sOwnedPool = new Parcel[POOL_SIZE]; 201 private static final Parcel[] sHolderPool = new Parcel[POOL_SIZE]; 202 203 private static final int VAL_NULL = -1; 204 private static final int VAL_STRING = 0; 205 private static final int VAL_INTEGER = 1; 206 private static final int VAL_MAP = 2; 207 private static final int VAL_BUNDLE = 3; 208 private static final int VAL_PARCELABLE = 4; 209 private static final int VAL_SHORT = 5; 210 private static final int VAL_LONG = 6; 211 private static final int VAL_FLOAT = 7; 212 private static final int VAL_DOUBLE = 8; 213 private static final int VAL_BOOLEAN = 9; 214 private static final int VAL_CHARSEQUENCE = 10; 215 private static final int VAL_LIST = 11; 216 private static final int VAL_SPARSEARRAY = 12; 217 private static final int VAL_BYTEARRAY = 13; 218 private static final int VAL_STRINGARRAY = 14; 219 private static final int VAL_IBINDER = 15; 220 private static final int VAL_PARCELABLEARRAY = 16; 221 private static final int VAL_OBJECTARRAY = 17; 222 private static final int VAL_INTARRAY = 18; 223 private static final int VAL_LONGARRAY = 19; 224 private static final int VAL_BYTE = 20; 225 private static final int VAL_SERIALIZABLE = 21; 226 private static final int VAL_SPARSEBOOLEANARRAY = 22; 227 private static final int VAL_BOOLEANARRAY = 23; 228 private static final int VAL_CHARSEQUENCEARRAY = 24; 229 private static final int VAL_PERSISTABLEBUNDLE = 25; 230 private static final int VAL_SIZE = 26; 231 private static final int VAL_SIZEF = 27; 232 233 // The initial int32 in a Binder call's reply Parcel header: 234 // Keep these in sync with libbinder's binder/Status.h. 235 private static final int EX_SECURITY = -1; 236 private static final int EX_BAD_PARCELABLE = -2; 237 private static final int EX_ILLEGAL_ARGUMENT = -3; 238 private static final int EX_NULL_POINTER = -4; 239 private static final int EX_ILLEGAL_STATE = -5; 240 private static final int EX_NETWORK_MAIN_THREAD = -6; 241 private static final int EX_UNSUPPORTED_OPERATION = -7; 242 private static final int EX_SERVICE_SPECIFIC = -8; 243 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 244 // EX_TRANSACTION_FAILED is used exclusively in native code. 245 // see libbinder's binder/Status.h 246 private static final int EX_TRANSACTION_FAILED = -129; 247 248 private static native int nativeDataSize(long nativePtr); 249 private static native int nativeDataAvail(long nativePtr); 250 private static native int nativeDataPosition(long nativePtr); 251 private static native int nativeDataCapacity(long nativePtr); 252 private static native void nativeSetDataSize(long nativePtr, int size); 253 private static native void nativeSetDataPosition(long nativePtr, int pos); 254 private static native void nativeSetDataCapacity(long nativePtr, int size); 255 256 private static native boolean nativePushAllowFds(long nativePtr, boolean allowFds); 257 private static native void nativeRestoreAllowFds(long nativePtr, boolean lastValue); 258 259 private static native void nativeWriteByteArray(long nativePtr, byte[] b, int offset, int len); 260 private static native void nativeWriteBlob(long nativePtr, byte[] b, int offset, int len); 261 private static native void nativeWriteInt(long nativePtr, int val); 262 private static native void nativeWriteLong(long nativePtr, long val); 263 private static native void nativeWriteFloat(long nativePtr, float val); 264 private static native void nativeWriteDouble(long nativePtr, double val); 265 private static native void nativeWriteString(long nativePtr, String val); 266 private static native void nativeWriteStrongBinder(long nativePtr, IBinder val); 267 private static native void nativeWriteFileDescriptor(long nativePtr, FileDescriptor val); 268 269 private static native byte[] nativeCreateByteArray(long nativePtr); 270 private static native byte[] nativeReadBlob(long nativePtr); 271 private static native int nativeReadInt(long nativePtr); 272 private static native long nativeReadLong(long nativePtr); 273 private static native float nativeReadFloat(long nativePtr); 274 private static native double nativeReadDouble(long nativePtr); 275 private static native String nativeReadString(long nativePtr); 276 private static native IBinder nativeReadStrongBinder(long nativePtr); 277 private static native FileDescriptor nativeReadFileDescriptor(long nativePtr); 278 279 private static native long nativeCreate(); 280 private static native void nativeFreeBuffer(long nativePtr); 281 private static native void nativeDestroy(long nativePtr); 282 283 private static native byte[] nativeMarshall(long nativePtr); 284 private static native void nativeUnmarshall( 285 long nativePtr, byte[] data, int offset, int length); 286 private static native void nativeAppendFrom( 287 long thisNativePtr, long otherNativePtr, int offset, int length); 288 private static native boolean nativeHasFileDescriptors(long nativePtr); 289 private static native void nativeWriteInterfaceToken(long nativePtr, String interfaceName); 290 private static native void nativeEnforceInterface(long nativePtr, String interfaceName); 291 292 private static native long nativeGetBlobAshmemSize(long nativePtr); 293 294 public final static Parcelable.Creator<String> STRING_CREATOR 295 = new Parcelable.Creator<String>() { 296 public String createFromParcel(Parcel source) { 297 return source.readString(); 298 } 299 public String[] newArray(int size) { 300 return new String[size]; 301 } 302 }; 303 304 /** 305 * Retrieve a new Parcel object from the pool. 306 */ 307 public static Parcel obtain() { 308 final Parcel[] pool = sOwnedPool; 309 synchronized (pool) { 310 Parcel p; 311 for (int i=0; i<POOL_SIZE; i++) { 312 p = pool[i]; 313 if (p != null) { 314 pool[i] = null; 315 if (DEBUG_RECYCLE) { 316 p.mStack = new RuntimeException(); 317 } 318 return p; 319 } 320 } 321 } 322 return new Parcel(0); 323 } 324 325 /** 326 * Put a Parcel object back into the pool. You must not touch 327 * the object after this call. 328 */ 329 public final void recycle() { 330 if (DEBUG_RECYCLE) mStack = null; 331 freeBuffer(); 332 333 final Parcel[] pool; 334 if (mOwnsNativeParcelObject) { 335 pool = sOwnedPool; 336 } else { 337 mNativePtr = 0; 338 pool = sHolderPool; 339 } 340 341 synchronized (pool) { 342 for (int i=0; i<POOL_SIZE; i++) { 343 if (pool[i] == null) { 344 pool[i] = this; 345 return; 346 } 347 } 348 } 349 } 350 351 /** @hide */ 352 public static native long getGlobalAllocSize(); 353 354 /** @hide */ 355 public static native long getGlobalAllocCount(); 356 357 /** 358 * Returns the total amount of data contained in the parcel. 359 */ 360 public final int dataSize() { 361 return nativeDataSize(mNativePtr); 362 } 363 364 /** 365 * Returns the amount of data remaining to be read from the 366 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 367 */ 368 public final int dataAvail() { 369 return nativeDataAvail(mNativePtr); 370 } 371 372 /** 373 * Returns the current position in the parcel data. Never 374 * more than {@link #dataSize}. 375 */ 376 public final int dataPosition() { 377 return nativeDataPosition(mNativePtr); 378 } 379 380 /** 381 * Returns the total amount of space in the parcel. This is always 382 * >= {@link #dataSize}. The difference between it and dataSize() is the 383 * amount of room left until the parcel needs to re-allocate its 384 * data buffer. 385 */ 386 public final int dataCapacity() { 387 return nativeDataCapacity(mNativePtr); 388 } 389 390 /** 391 * Change the amount of data in the parcel. Can be either smaller or 392 * larger than the current size. If larger than the current capacity, 393 * more memory will be allocated. 394 * 395 * @param size The new number of bytes in the Parcel. 396 */ 397 public final void setDataSize(int size) { 398 nativeSetDataSize(mNativePtr, size); 399 } 400 401 /** 402 * Move the current read/write position in the parcel. 403 * @param pos New offset in the parcel; must be between 0 and 404 * {@link #dataSize}. 405 */ 406 public final void setDataPosition(int pos) { 407 nativeSetDataPosition(mNativePtr, pos); 408 } 409 410 /** 411 * Change the capacity (current available space) of the parcel. 412 * 413 * @param size The new capacity of the parcel, in bytes. Can not be 414 * less than {@link #dataSize} -- that is, you can not drop existing data 415 * with this method. 416 */ 417 public final void setDataCapacity(int size) { 418 nativeSetDataCapacity(mNativePtr, size); 419 } 420 421 /** @hide */ 422 public final boolean pushAllowFds(boolean allowFds) { 423 return nativePushAllowFds(mNativePtr, allowFds); 424 } 425 426 /** @hide */ 427 public final void restoreAllowFds(boolean lastValue) { 428 nativeRestoreAllowFds(mNativePtr, lastValue); 429 } 430 431 /** 432 * Returns the raw bytes of the parcel. 433 * 434 * <p class="note">The data you retrieve here <strong>must not</strong> 435 * be placed in any kind of persistent storage (on local disk, across 436 * a network, etc). For that, you should use standard serialization 437 * or another kind of general serialization mechanism. The Parcel 438 * marshalled representation is highly optimized for local IPC, and as 439 * such does not attempt to maintain compatibility with data created 440 * in different versions of the platform. 441 */ 442 public final byte[] marshall() { 443 return nativeMarshall(mNativePtr); 444 } 445 446 /** 447 * Set the bytes in data to be the raw bytes of this Parcel. 448 */ 449 public final void unmarshall(byte[] data, int offset, int length) { 450 nativeUnmarshall(mNativePtr, data, offset, length); 451 } 452 453 public final void appendFrom(Parcel parcel, int offset, int length) { 454 nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length); 455 } 456 457 /** 458 * Report whether the parcel contains any marshalled file descriptors. 459 */ 460 public final boolean hasFileDescriptors() { 461 return nativeHasFileDescriptors(mNativePtr); 462 } 463 464 /** 465 * Store or read an IBinder interface token in the parcel at the current 466 * {@link #dataPosition}. This is used to validate that the marshalled 467 * transaction is intended for the target interface. 468 */ 469 public final void writeInterfaceToken(String interfaceName) { 470 nativeWriteInterfaceToken(mNativePtr, interfaceName); 471 } 472 473 public final void enforceInterface(String interfaceName) { 474 nativeEnforceInterface(mNativePtr, interfaceName); 475 } 476 477 /** 478 * Write a byte array into the parcel at the current {@link #dataPosition}, 479 * growing {@link #dataCapacity} if needed. 480 * @param b Bytes to place into the parcel. 481 */ 482 public final void writeByteArray(byte[] b) { 483 writeByteArray(b, 0, (b != null) ? b.length : 0); 484 } 485 486 /** 487 * Write a byte array into the parcel at the current {@link #dataPosition}, 488 * growing {@link #dataCapacity} if needed. 489 * @param b Bytes to place into the parcel. 490 * @param offset Index of first byte to be written. 491 * @param len Number of bytes to write. 492 */ 493 public final void writeByteArray(byte[] b, int offset, int len) { 494 if (b == null) { 495 writeInt(-1); 496 return; 497 } 498 Arrays.checkOffsetAndCount(b.length, offset, len); 499 nativeWriteByteArray(mNativePtr, b, offset, len); 500 } 501 502 /** 503 * Write a blob of data into the parcel at the current {@link #dataPosition}, 504 * growing {@link #dataCapacity} if needed. 505 * @param b Bytes to place into the parcel. 506 * {@hide} 507 * {@SystemApi} 508 */ 509 public final void writeBlob(byte[] b) { 510 writeBlob(b, 0, (b != null) ? b.length : 0); 511 } 512 513 /** 514 * Write a blob of data into the parcel at the current {@link #dataPosition}, 515 * growing {@link #dataCapacity} if needed. 516 * @param b Bytes to place into the parcel. 517 * @param offset Index of first byte to be written. 518 * @param len Number of bytes to write. 519 * {@hide} 520 * {@SystemApi} 521 */ 522 public final void writeBlob(byte[] b, int offset, int len) { 523 if (b == null) { 524 writeInt(-1); 525 return; 526 } 527 Arrays.checkOffsetAndCount(b.length, offset, len); 528 nativeWriteBlob(mNativePtr, b, offset, len); 529 } 530 531 /** 532 * Write an integer value into the parcel at the current dataPosition(), 533 * growing dataCapacity() if needed. 534 */ 535 public final void writeInt(int val) { 536 nativeWriteInt(mNativePtr, val); 537 } 538 539 /** 540 * Write a long integer value into the parcel at the current dataPosition(), 541 * growing dataCapacity() if needed. 542 */ 543 public final void writeLong(long val) { 544 nativeWriteLong(mNativePtr, val); 545 } 546 547 /** 548 * Write a floating point value into the parcel at the current 549 * dataPosition(), growing dataCapacity() if needed. 550 */ 551 public final void writeFloat(float val) { 552 nativeWriteFloat(mNativePtr, val); 553 } 554 555 /** 556 * Write a double precision floating point value into the parcel at the 557 * current dataPosition(), growing dataCapacity() if needed. 558 */ 559 public final void writeDouble(double val) { 560 nativeWriteDouble(mNativePtr, val); 561 } 562 563 /** 564 * Write a string value into the parcel at the current dataPosition(), 565 * growing dataCapacity() if needed. 566 */ 567 public final void writeString(String val) { 568 nativeWriteString(mNativePtr, val); 569 } 570 571 /** 572 * Write a CharSequence value into the parcel at the current dataPosition(), 573 * growing dataCapacity() if needed. 574 * @hide 575 */ 576 public final void writeCharSequence(CharSequence val) { 577 TextUtils.writeToParcel(val, this, 0); 578 } 579 580 /** 581 * Write an object into the parcel at the current dataPosition(), 582 * growing dataCapacity() if needed. 583 */ 584 public final void writeStrongBinder(IBinder val) { 585 nativeWriteStrongBinder(mNativePtr, val); 586 } 587 588 /** 589 * Write an object into the parcel at the current dataPosition(), 590 * growing dataCapacity() if needed. 591 */ 592 public final void writeStrongInterface(IInterface val) { 593 writeStrongBinder(val == null ? null : val.asBinder()); 594 } 595 596 /** 597 * Write a FileDescriptor into the parcel at the current dataPosition(), 598 * growing dataCapacity() if needed. 599 * 600 * <p class="caution">The file descriptor will not be closed, which may 601 * result in file descriptor leaks when objects are returned from Binder 602 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 603 * accepts contextual flags and will close the original file descriptor 604 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 605 */ 606 public final void writeFileDescriptor(FileDescriptor val) { 607 nativeWriteFileDescriptor(mNativePtr, val); 608 } 609 610 /** 611 * {@hide} 612 * This will be the new name for writeFileDescriptor, for consistency. 613 **/ 614 public final void writeRawFileDescriptor(FileDescriptor val) { 615 nativeWriteFileDescriptor(mNativePtr, val); 616 } 617 618 /** 619 * {@hide} 620 * Write an array of FileDescriptor objects into the Parcel. 621 * 622 * @param value The array of objects to be written. 623 */ 624 public final void writeRawFileDescriptorArray(FileDescriptor[] value) { 625 if (value != null) { 626 int N = value.length; 627 writeInt(N); 628 for (int i=0; i<N; i++) { 629 writeRawFileDescriptor(value[i]); 630 } 631 } else { 632 writeInt(-1); 633 } 634 } 635 636 /** 637 * Write a byte value into the parcel at the current dataPosition(), 638 * growing dataCapacity() if needed. 639 */ 640 public final void writeByte(byte val) { 641 writeInt(val); 642 } 643 644 /** 645 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 646 * at the current dataPosition(), 647 * growing dataCapacity() if needed. The Map keys must be String objects. 648 * The Map values are written using {@link #writeValue} and must follow 649 * the specification there. 650 * 651 * <p>It is strongly recommended to use {@link #writeBundle} instead of 652 * this method, since the Bundle class provides a type-safe API that 653 * allows you to avoid mysterious type errors at the point of marshalling. 654 */ 655 public final void writeMap(Map val) { 656 writeMapInternal((Map<String, Object>) val); 657 } 658 659 /** 660 * Flatten a Map into the parcel at the current dataPosition(), 661 * growing dataCapacity() if needed. The Map keys must be String objects. 662 */ 663 /* package */ void writeMapInternal(Map<String,Object> val) { 664 if (val == null) { 665 writeInt(-1); 666 return; 667 } 668 Set<Map.Entry<String,Object>> entries = val.entrySet(); 669 writeInt(entries.size()); 670 for (Map.Entry<String,Object> e : entries) { 671 writeValue(e.getKey()); 672 writeValue(e.getValue()); 673 } 674 } 675 676 /** 677 * Flatten an ArrayMap into the parcel at the current dataPosition(), 678 * growing dataCapacity() if needed. The Map keys must be String objects. 679 */ 680 /* package */ void writeArrayMapInternal(ArrayMap<String, Object> val) { 681 if (val == null) { 682 writeInt(-1); 683 return; 684 } 685 final int N = val.size(); 686 writeInt(N); 687 if (DEBUG_ARRAY_MAP) { 688 RuntimeException here = new RuntimeException("here"); 689 here.fillInStackTrace(); 690 Log.d(TAG, "Writing " + N + " ArrayMap entries", here); 691 } 692 int startPos; 693 for (int i=0; i<N; i++) { 694 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 695 writeString(val.keyAt(i)); 696 writeValue(val.valueAt(i)); 697 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Write #" + i + " " 698 + (dataPosition()-startPos) + " bytes: key=0x" 699 + Integer.toHexString(val.keyAt(i) != null ? val.keyAt(i).hashCode() : 0) 700 + " " + val.keyAt(i)); 701 } 702 } 703 704 /** 705 * @hide For testing only. 706 */ 707 public void writeArrayMap(ArrayMap<String, Object> val) { 708 writeArrayMapInternal(val); 709 } 710 711 /** 712 * Flatten a Bundle into the parcel at the current dataPosition(), 713 * growing dataCapacity() if needed. 714 */ 715 public final void writeBundle(Bundle val) { 716 if (val == null) { 717 writeInt(-1); 718 return; 719 } 720 721 val.writeToParcel(this, 0); 722 } 723 724 /** 725 * Flatten a PersistableBundle into the parcel at the current dataPosition(), 726 * growing dataCapacity() if needed. 727 */ 728 public final void writePersistableBundle(PersistableBundle val) { 729 if (val == null) { 730 writeInt(-1); 731 return; 732 } 733 734 val.writeToParcel(this, 0); 735 } 736 737 /** 738 * Flatten a Size into the parcel at the current dataPosition(), 739 * growing dataCapacity() if needed. 740 */ 741 public final void writeSize(Size val) { 742 writeInt(val.getWidth()); 743 writeInt(val.getHeight()); 744 } 745 746 /** 747 * Flatten a SizeF into the parcel at the current dataPosition(), 748 * growing dataCapacity() if needed. 749 */ 750 public final void writeSizeF(SizeF val) { 751 writeFloat(val.getWidth()); 752 writeFloat(val.getHeight()); 753 } 754 755 /** 756 * Flatten a List into the parcel at the current dataPosition(), growing 757 * dataCapacity() if needed. The List values are written using 758 * {@link #writeValue} and must follow the specification there. 759 */ 760 public final void writeList(List val) { 761 if (val == null) { 762 writeInt(-1); 763 return; 764 } 765 int N = val.size(); 766 int i=0; 767 writeInt(N); 768 while (i < N) { 769 writeValue(val.get(i)); 770 i++; 771 } 772 } 773 774 /** 775 * Flatten an Object array into the parcel at the current dataPosition(), 776 * growing dataCapacity() if needed. The array values are written using 777 * {@link #writeValue} and must follow the specification there. 778 */ 779 public final void writeArray(Object[] val) { 780 if (val == null) { 781 writeInt(-1); 782 return; 783 } 784 int N = val.length; 785 int i=0; 786 writeInt(N); 787 while (i < N) { 788 writeValue(val[i]); 789 i++; 790 } 791 } 792 793 /** 794 * Flatten a generic SparseArray into the parcel at the current 795 * dataPosition(), growing dataCapacity() if needed. The SparseArray 796 * values are written using {@link #writeValue} and must follow the 797 * specification there. 798 */ 799 public final void writeSparseArray(SparseArray<Object> val) { 800 if (val == null) { 801 writeInt(-1); 802 return; 803 } 804 int N = val.size(); 805 writeInt(N); 806 int i=0; 807 while (i < N) { 808 writeInt(val.keyAt(i)); 809 writeValue(val.valueAt(i)); 810 i++; 811 } 812 } 813 814 public final void writeSparseBooleanArray(SparseBooleanArray val) { 815 if (val == null) { 816 writeInt(-1); 817 return; 818 } 819 int N = val.size(); 820 writeInt(N); 821 int i=0; 822 while (i < N) { 823 writeInt(val.keyAt(i)); 824 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 825 i++; 826 } 827 } 828 829 public final void writeBooleanArray(boolean[] val) { 830 if (val != null) { 831 int N = val.length; 832 writeInt(N); 833 for (int i=0; i<N; i++) { 834 writeInt(val[i] ? 1 : 0); 835 } 836 } else { 837 writeInt(-1); 838 } 839 } 840 841 public final boolean[] createBooleanArray() { 842 int N = readInt(); 843 // >>2 as a fast divide-by-4 works in the create*Array() functions 844 // because dataAvail() will never return a negative number. 4 is 845 // the size of a stored boolean in the stream. 846 if (N >= 0 && N <= (dataAvail() >> 2)) { 847 boolean[] val = new boolean[N]; 848 for (int i=0; i<N; i++) { 849 val[i] = readInt() != 0; 850 } 851 return val; 852 } else { 853 return null; 854 } 855 } 856 857 public final void readBooleanArray(boolean[] val) { 858 int N = readInt(); 859 if (N == val.length) { 860 for (int i=0; i<N; i++) { 861 val[i] = readInt() != 0; 862 } 863 } else { 864 throw new RuntimeException("bad array lengths"); 865 } 866 } 867 868 public final void writeCharArray(char[] val) { 869 if (val != null) { 870 int N = val.length; 871 writeInt(N); 872 for (int i=0; i<N; i++) { 873 writeInt((int)val[i]); 874 } 875 } else { 876 writeInt(-1); 877 } 878 } 879 880 public final char[] createCharArray() { 881 int N = readInt(); 882 if (N >= 0 && N <= (dataAvail() >> 2)) { 883 char[] val = new char[N]; 884 for (int i=0; i<N; i++) { 885 val[i] = (char)readInt(); 886 } 887 return val; 888 } else { 889 return null; 890 } 891 } 892 893 public final void readCharArray(char[] val) { 894 int N = readInt(); 895 if (N == val.length) { 896 for (int i=0; i<N; i++) { 897 val[i] = (char)readInt(); 898 } 899 } else { 900 throw new RuntimeException("bad array lengths"); 901 } 902 } 903 904 public final void writeIntArray(int[] val) { 905 if (val != null) { 906 int N = val.length; 907 writeInt(N); 908 for (int i=0; i<N; i++) { 909 writeInt(val[i]); 910 } 911 } else { 912 writeInt(-1); 913 } 914 } 915 916 public final int[] createIntArray() { 917 int N = readInt(); 918 if (N >= 0 && N <= (dataAvail() >> 2)) { 919 int[] val = new int[N]; 920 for (int i=0; i<N; i++) { 921 val[i] = readInt(); 922 } 923 return val; 924 } else { 925 return null; 926 } 927 } 928 929 public final void readIntArray(int[] val) { 930 int N = readInt(); 931 if (N == val.length) { 932 for (int i=0; i<N; i++) { 933 val[i] = readInt(); 934 } 935 } else { 936 throw new RuntimeException("bad array lengths"); 937 } 938 } 939 940 public final void writeLongArray(long[] val) { 941 if (val != null) { 942 int N = val.length; 943 writeInt(N); 944 for (int i=0; i<N; i++) { 945 writeLong(val[i]); 946 } 947 } else { 948 writeInt(-1); 949 } 950 } 951 952 public final long[] createLongArray() { 953 int N = readInt(); 954 // >>3 because stored longs are 64 bits 955 if (N >= 0 && N <= (dataAvail() >> 3)) { 956 long[] val = new long[N]; 957 for (int i=0; i<N; i++) { 958 val[i] = readLong(); 959 } 960 return val; 961 } else { 962 return null; 963 } 964 } 965 966 public final void readLongArray(long[] val) { 967 int N = readInt(); 968 if (N == val.length) { 969 for (int i=0; i<N; i++) { 970 val[i] = readLong(); 971 } 972 } else { 973 throw new RuntimeException("bad array lengths"); 974 } 975 } 976 977 public final void writeFloatArray(float[] val) { 978 if (val != null) { 979 int N = val.length; 980 writeInt(N); 981 for (int i=0; i<N; i++) { 982 writeFloat(val[i]); 983 } 984 } else { 985 writeInt(-1); 986 } 987 } 988 989 public final float[] createFloatArray() { 990 int N = readInt(); 991 // >>2 because stored floats are 4 bytes 992 if (N >= 0 && N <= (dataAvail() >> 2)) { 993 float[] val = new float[N]; 994 for (int i=0; i<N; i++) { 995 val[i] = readFloat(); 996 } 997 return val; 998 } else { 999 return null; 1000 } 1001 } 1002 1003 public final void readFloatArray(float[] val) { 1004 int N = readInt(); 1005 if (N == val.length) { 1006 for (int i=0; i<N; i++) { 1007 val[i] = readFloat(); 1008 } 1009 } else { 1010 throw new RuntimeException("bad array lengths"); 1011 } 1012 } 1013 1014 public final void writeDoubleArray(double[] val) { 1015 if (val != null) { 1016 int N = val.length; 1017 writeInt(N); 1018 for (int i=0; i<N; i++) { 1019 writeDouble(val[i]); 1020 } 1021 } else { 1022 writeInt(-1); 1023 } 1024 } 1025 1026 public final double[] createDoubleArray() { 1027 int N = readInt(); 1028 // >>3 because stored doubles are 8 bytes 1029 if (N >= 0 && N <= (dataAvail() >> 3)) { 1030 double[] val = new double[N]; 1031 for (int i=0; i<N; i++) { 1032 val[i] = readDouble(); 1033 } 1034 return val; 1035 } else { 1036 return null; 1037 } 1038 } 1039 1040 public final void readDoubleArray(double[] val) { 1041 int N = readInt(); 1042 if (N == val.length) { 1043 for (int i=0; i<N; i++) { 1044 val[i] = readDouble(); 1045 } 1046 } else { 1047 throw new RuntimeException("bad array lengths"); 1048 } 1049 } 1050 1051 public final void writeStringArray(String[] val) { 1052 if (val != null) { 1053 int N = val.length; 1054 writeInt(N); 1055 for (int i=0; i<N; i++) { 1056 writeString(val[i]); 1057 } 1058 } else { 1059 writeInt(-1); 1060 } 1061 } 1062 1063 public final String[] createStringArray() { 1064 int N = readInt(); 1065 if (N >= 0) { 1066 String[] val = new String[N]; 1067 for (int i=0; i<N; i++) { 1068 val[i] = readString(); 1069 } 1070 return val; 1071 } else { 1072 return null; 1073 } 1074 } 1075 1076 public final void readStringArray(String[] val) { 1077 int N = readInt(); 1078 if (N == val.length) { 1079 for (int i=0; i<N; i++) { 1080 val[i] = readString(); 1081 } 1082 } else { 1083 throw new RuntimeException("bad array lengths"); 1084 } 1085 } 1086 1087 public final void writeBinderArray(IBinder[] val) { 1088 if (val != null) { 1089 int N = val.length; 1090 writeInt(N); 1091 for (int i=0; i<N; i++) { 1092 writeStrongBinder(val[i]); 1093 } 1094 } else { 1095 writeInt(-1); 1096 } 1097 } 1098 1099 /** 1100 * @hide 1101 */ 1102 public final void writeCharSequenceArray(CharSequence[] val) { 1103 if (val != null) { 1104 int N = val.length; 1105 writeInt(N); 1106 for (int i=0; i<N; i++) { 1107 writeCharSequence(val[i]); 1108 } 1109 } else { 1110 writeInt(-1); 1111 } 1112 } 1113 1114 /** 1115 * @hide 1116 */ 1117 public final void writeCharSequenceList(ArrayList<CharSequence> val) { 1118 if (val != null) { 1119 int N = val.size(); 1120 writeInt(N); 1121 for (int i=0; i<N; i++) { 1122 writeCharSequence(val.get(i)); 1123 } 1124 } else { 1125 writeInt(-1); 1126 } 1127 } 1128 1129 public final IBinder[] createBinderArray() { 1130 int N = readInt(); 1131 if (N >= 0) { 1132 IBinder[] val = new IBinder[N]; 1133 for (int i=0; i<N; i++) { 1134 val[i] = readStrongBinder(); 1135 } 1136 return val; 1137 } else { 1138 return null; 1139 } 1140 } 1141 1142 public final void readBinderArray(IBinder[] val) { 1143 int N = readInt(); 1144 if (N == val.length) { 1145 for (int i=0; i<N; i++) { 1146 val[i] = readStrongBinder(); 1147 } 1148 } else { 1149 throw new RuntimeException("bad array lengths"); 1150 } 1151 } 1152 1153 /** 1154 * Flatten a List containing a particular object type into the parcel, at 1155 * the current dataPosition() and growing dataCapacity() if needed. The 1156 * type of the objects in the list must be one that implements Parcelable. 1157 * Unlike the generic writeList() method, however, only the raw data of the 1158 * objects is written and not their type, so you must use the corresponding 1159 * readTypedList() to unmarshall them. 1160 * 1161 * @param val The list of objects to be written. 1162 * 1163 * @see #createTypedArrayList 1164 * @see #readTypedList 1165 * @see Parcelable 1166 */ 1167 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1168 if (val == null) { 1169 writeInt(-1); 1170 return; 1171 } 1172 int N = val.size(); 1173 int i=0; 1174 writeInt(N); 1175 while (i < N) { 1176 T item = val.get(i); 1177 if (item != null) { 1178 writeInt(1); 1179 item.writeToParcel(this, 0); 1180 } else { 1181 writeInt(0); 1182 } 1183 i++; 1184 } 1185 } 1186 1187 /** 1188 * Flatten a List containing String objects into the parcel, at 1189 * the current dataPosition() and growing dataCapacity() if needed. They 1190 * can later be retrieved with {@link #createStringArrayList} or 1191 * {@link #readStringList}. 1192 * 1193 * @param val The list of strings to be written. 1194 * 1195 * @see #createStringArrayList 1196 * @see #readStringList 1197 */ 1198 public final void writeStringList(List<String> val) { 1199 if (val == null) { 1200 writeInt(-1); 1201 return; 1202 } 1203 int N = val.size(); 1204 int i=0; 1205 writeInt(N); 1206 while (i < N) { 1207 writeString(val.get(i)); 1208 i++; 1209 } 1210 } 1211 1212 /** 1213 * Flatten a List containing IBinder objects into the parcel, at 1214 * the current dataPosition() and growing dataCapacity() if needed. They 1215 * can later be retrieved with {@link #createBinderArrayList} or 1216 * {@link #readBinderList}. 1217 * 1218 * @param val The list of strings to be written. 1219 * 1220 * @see #createBinderArrayList 1221 * @see #readBinderList 1222 */ 1223 public final void writeBinderList(List<IBinder> 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 writeStrongBinder(val.get(i)); 1233 i++; 1234 } 1235 } 1236 1237 /** 1238 * Flatten a heterogeneous array containing a particular object type into 1239 * the parcel, at 1240 * the current dataPosition() and growing dataCapacity() if needed. The 1241 * type of the objects in the array must be one that implements Parcelable. 1242 * Unlike the {@link #writeParcelableArray} method, however, only the 1243 * raw data of the objects is written and not their type, so you must use 1244 * {@link #readTypedArray} with the correct corresponding 1245 * {@link Parcelable.Creator} implementation to unmarshall them. 1246 * 1247 * @param val The array of objects to be written. 1248 * @param parcelableFlags Contextual flags as per 1249 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1250 * 1251 * @see #readTypedArray 1252 * @see #writeParcelableArray 1253 * @see Parcelable.Creator 1254 */ 1255 public final <T extends Parcelable> void writeTypedArray(T[] val, 1256 int parcelableFlags) { 1257 if (val != null) { 1258 int N = val.length; 1259 writeInt(N); 1260 for (int i=0; i<N; i++) { 1261 T item = val[i]; 1262 if (item != null) { 1263 writeInt(1); 1264 item.writeToParcel(this, parcelableFlags); 1265 } else { 1266 writeInt(0); 1267 } 1268 } 1269 } else { 1270 writeInt(-1); 1271 } 1272 } 1273 1274 /** 1275 * Flatten the Parcelable object into the parcel. 1276 * 1277 * @param val The Parcelable object to be written. 1278 * @param parcelableFlags Contextual flags as per 1279 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1280 * 1281 * @see #readTypedObject 1282 */ 1283 public final <T extends Parcelable> void writeTypedObject(T val, int parcelableFlags) { 1284 if (val != null) { 1285 writeInt(1); 1286 val.writeToParcel(this, parcelableFlags); 1287 } else { 1288 writeInt(0); 1289 } 1290 } 1291 1292 /** 1293 * Flatten a generic object in to a parcel. The given Object value may 1294 * currently be one of the following types: 1295 * 1296 * <ul> 1297 * <li> null 1298 * <li> String 1299 * <li> Byte 1300 * <li> Short 1301 * <li> Integer 1302 * <li> Long 1303 * <li> Float 1304 * <li> Double 1305 * <li> Boolean 1306 * <li> String[] 1307 * <li> boolean[] 1308 * <li> byte[] 1309 * <li> int[] 1310 * <li> long[] 1311 * <li> Object[] (supporting objects of the same type defined here). 1312 * <li> {@link Bundle} 1313 * <li> Map (as supported by {@link #writeMap}). 1314 * <li> Any object that implements the {@link Parcelable} protocol. 1315 * <li> Parcelable[] 1316 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1317 * <li> List (as supported by {@link #writeList}). 1318 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1319 * <li> {@link IBinder} 1320 * <li> Any object that implements Serializable (but see 1321 * {@link #writeSerializable} for caveats). Note that all of the 1322 * previous types have relatively efficient implementations for 1323 * writing to a Parcel; having to rely on the generic serialization 1324 * approach is much less efficient and should be avoided whenever 1325 * possible. 1326 * </ul> 1327 * 1328 * <p class="caution">{@link Parcelable} objects are written with 1329 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1330 * serializing objects containing {@link ParcelFileDescriptor}s, 1331 * this may result in file descriptor leaks when they are returned from 1332 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1333 * should be used).</p> 1334 */ 1335 public final void writeValue(Object v) { 1336 if (v == null) { 1337 writeInt(VAL_NULL); 1338 } else if (v instanceof String) { 1339 writeInt(VAL_STRING); 1340 writeString((String) v); 1341 } else if (v instanceof Integer) { 1342 writeInt(VAL_INTEGER); 1343 writeInt((Integer) v); 1344 } else if (v instanceof Map) { 1345 writeInt(VAL_MAP); 1346 writeMap((Map) v); 1347 } else if (v instanceof Bundle) { 1348 // Must be before Parcelable 1349 writeInt(VAL_BUNDLE); 1350 writeBundle((Bundle) v); 1351 } else if (v instanceof Parcelable) { 1352 writeInt(VAL_PARCELABLE); 1353 writeParcelable((Parcelable) v, 0); 1354 } else if (v instanceof Short) { 1355 writeInt(VAL_SHORT); 1356 writeInt(((Short) v).intValue()); 1357 } else if (v instanceof Long) { 1358 writeInt(VAL_LONG); 1359 writeLong((Long) v); 1360 } else if (v instanceof Float) { 1361 writeInt(VAL_FLOAT); 1362 writeFloat((Float) v); 1363 } else if (v instanceof Double) { 1364 writeInt(VAL_DOUBLE); 1365 writeDouble((Double) v); 1366 } else if (v instanceof Boolean) { 1367 writeInt(VAL_BOOLEAN); 1368 writeInt((Boolean) v ? 1 : 0); 1369 } else if (v instanceof CharSequence) { 1370 // Must be after String 1371 writeInt(VAL_CHARSEQUENCE); 1372 writeCharSequence((CharSequence) v); 1373 } else if (v instanceof List) { 1374 writeInt(VAL_LIST); 1375 writeList((List) v); 1376 } else if (v instanceof SparseArray) { 1377 writeInt(VAL_SPARSEARRAY); 1378 writeSparseArray((SparseArray) v); 1379 } else if (v instanceof boolean[]) { 1380 writeInt(VAL_BOOLEANARRAY); 1381 writeBooleanArray((boolean[]) v); 1382 } else if (v instanceof byte[]) { 1383 writeInt(VAL_BYTEARRAY); 1384 writeByteArray((byte[]) v); 1385 } else if (v instanceof String[]) { 1386 writeInt(VAL_STRINGARRAY); 1387 writeStringArray((String[]) v); 1388 } else if (v instanceof CharSequence[]) { 1389 // Must be after String[] and before Object[] 1390 writeInt(VAL_CHARSEQUENCEARRAY); 1391 writeCharSequenceArray((CharSequence[]) v); 1392 } else if (v instanceof IBinder) { 1393 writeInt(VAL_IBINDER); 1394 writeStrongBinder((IBinder) v); 1395 } else if (v instanceof Parcelable[]) { 1396 writeInt(VAL_PARCELABLEARRAY); 1397 writeParcelableArray((Parcelable[]) v, 0); 1398 } else if (v instanceof int[]) { 1399 writeInt(VAL_INTARRAY); 1400 writeIntArray((int[]) v); 1401 } else if (v instanceof long[]) { 1402 writeInt(VAL_LONGARRAY); 1403 writeLongArray((long[]) v); 1404 } else if (v instanceof Byte) { 1405 writeInt(VAL_BYTE); 1406 writeInt((Byte) v); 1407 } else if (v instanceof PersistableBundle) { 1408 writeInt(VAL_PERSISTABLEBUNDLE); 1409 writePersistableBundle((PersistableBundle) v); 1410 } else if (v instanceof Size) { 1411 writeInt(VAL_SIZE); 1412 writeSize((Size) v); 1413 } else if (v instanceof SizeF) { 1414 writeInt(VAL_SIZEF); 1415 writeSizeF((SizeF) v); 1416 } else { 1417 Class<?> clazz = v.getClass(); 1418 if (clazz.isArray() && clazz.getComponentType() == Object.class) { 1419 // Only pure Object[] are written here, Other arrays of non-primitive types are 1420 // handled by serialization as this does not record the component type. 1421 writeInt(VAL_OBJECTARRAY); 1422 writeArray((Object[]) v); 1423 } else if (v instanceof Serializable) { 1424 // Must be last 1425 writeInt(VAL_SERIALIZABLE); 1426 writeSerializable((Serializable) v); 1427 } else { 1428 throw new RuntimeException("Parcel: unable to marshal value " + v); 1429 } 1430 } 1431 } 1432 1433 /** 1434 * Flatten the name of the class of the Parcelable and its contents 1435 * into the parcel. 1436 * 1437 * @param p The Parcelable object to be written. 1438 * @param parcelableFlags Contextual flags as per 1439 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1440 */ 1441 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1442 if (p == null) { 1443 writeString(null); 1444 return; 1445 } 1446 writeParcelableCreator(p); 1447 p.writeToParcel(this, parcelableFlags); 1448 } 1449 1450 /** @hide */ 1451 public final void writeParcelableCreator(Parcelable p) { 1452 String name = p.getClass().getName(); 1453 writeString(name); 1454 } 1455 1456 /** 1457 * Write a generic serializable object in to a Parcel. It is strongly 1458 * recommended that this method be avoided, since the serialization 1459 * overhead is extremely large, and this approach will be much slower than 1460 * using the other approaches to writing data in to a Parcel. 1461 */ 1462 public final void writeSerializable(Serializable s) { 1463 if (s == null) { 1464 writeString(null); 1465 return; 1466 } 1467 String name = s.getClass().getName(); 1468 writeString(name); 1469 1470 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1471 try { 1472 ObjectOutputStream oos = new ObjectOutputStream(baos); 1473 oos.writeObject(s); 1474 oos.close(); 1475 1476 writeByteArray(baos.toByteArray()); 1477 } catch (IOException ioe) { 1478 throw new RuntimeException("Parcelable encountered " + 1479 "IOException writing serializable object (name = " + name + 1480 ")", ioe); 1481 } 1482 } 1483 1484 /** 1485 * Special function for writing an exception result at the header of 1486 * a parcel, to be used when returning an exception from a transaction. 1487 * Note that this currently only supports a few exception types; any other 1488 * exception will be re-thrown by this function as a RuntimeException 1489 * (to be caught by the system's last-resort exception handling when 1490 * dispatching a transaction). 1491 * 1492 * <p>The supported exception types are: 1493 * <ul> 1494 * <li>{@link BadParcelableException} 1495 * <li>{@link IllegalArgumentException} 1496 * <li>{@link IllegalStateException} 1497 * <li>{@link NullPointerException} 1498 * <li>{@link SecurityException} 1499 * <li>{@link NetworkOnMainThreadException} 1500 * </ul> 1501 * 1502 * @param e The Exception to be written. 1503 * 1504 * @see #writeNoException 1505 * @see #readException 1506 */ 1507 public final void writeException(Exception e) { 1508 int code = 0; 1509 if (e instanceof SecurityException) { 1510 code = EX_SECURITY; 1511 } else if (e instanceof BadParcelableException) { 1512 code = EX_BAD_PARCELABLE; 1513 } else if (e instanceof IllegalArgumentException) { 1514 code = EX_ILLEGAL_ARGUMENT; 1515 } else if (e instanceof NullPointerException) { 1516 code = EX_NULL_POINTER; 1517 } else if (e instanceof IllegalStateException) { 1518 code = EX_ILLEGAL_STATE; 1519 } else if (e instanceof NetworkOnMainThreadException) { 1520 code = EX_NETWORK_MAIN_THREAD; 1521 } else if (e instanceof UnsupportedOperationException) { 1522 code = EX_UNSUPPORTED_OPERATION; 1523 } else if (e instanceof ServiceSpecificException) { 1524 code = EX_SERVICE_SPECIFIC; 1525 } 1526 writeInt(code); 1527 StrictMode.clearGatheredViolations(); 1528 if (code == 0) { 1529 if (e instanceof RuntimeException) { 1530 throw (RuntimeException) e; 1531 } 1532 throw new RuntimeException(e); 1533 } 1534 writeString(e.getMessage()); 1535 if (e instanceof ServiceSpecificException) { 1536 writeInt(((ServiceSpecificException)e).errorCode); 1537 } 1538 } 1539 1540 /** 1541 * Special function for writing information at the front of the Parcel 1542 * indicating that no exception occurred. 1543 * 1544 * @see #writeException 1545 * @see #readException 1546 */ 1547 public final void writeNoException() { 1548 // Despite the name of this function ("write no exception"), 1549 // it should instead be thought of as "write the RPC response 1550 // header", but because this function name is written out by 1551 // the AIDL compiler, we're not going to rename it. 1552 // 1553 // The response header, in the non-exception case (see also 1554 // writeException above, also called by the AIDL compiler), is 1555 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1556 // StrictMode has gathered up violations that have occurred 1557 // during a Binder call, in which case we write out the number 1558 // of violations and their details, serialized, before the 1559 // actual RPC respons data. The receiving end of this is 1560 // readException(), below. 1561 if (StrictMode.hasGatheredViolations()) { 1562 writeInt(EX_HAS_REPLY_HEADER); 1563 final int sizePosition = dataPosition(); 1564 writeInt(0); // total size of fat header, to be filled in later 1565 StrictMode.writeGatheredViolationsToParcel(this); 1566 final int payloadPosition = dataPosition(); 1567 setDataPosition(sizePosition); 1568 writeInt(payloadPosition - sizePosition); // header size 1569 setDataPosition(payloadPosition); 1570 } else { 1571 writeInt(0); 1572 } 1573 } 1574 1575 /** 1576 * Special function for reading an exception result from the header of 1577 * a parcel, to be used after receiving the result of a transaction. This 1578 * will throw the exception for you if it had been written to the Parcel, 1579 * otherwise return and let you read the normal result data from the Parcel. 1580 * 1581 * @see #writeException 1582 * @see #writeNoException 1583 */ 1584 public final void readException() { 1585 int code = readExceptionCode(); 1586 if (code != 0) { 1587 String msg = readString(); 1588 readException(code, msg); 1589 } 1590 } 1591 1592 /** 1593 * Parses the header of a Binder call's response Parcel and 1594 * returns the exception code. Deals with lite or fat headers. 1595 * In the common successful case, this header is generally zero. 1596 * In less common cases, it's a small negative number and will be 1597 * followed by an error string. 1598 * 1599 * This exists purely for android.database.DatabaseUtils and 1600 * insulating it from having to handle fat headers as returned by 1601 * e.g. StrictMode-induced RPC responses. 1602 * 1603 * @hide 1604 */ 1605 public final int readExceptionCode() { 1606 int code = readInt(); 1607 if (code == EX_HAS_REPLY_HEADER) { 1608 int headerSize = readInt(); 1609 if (headerSize == 0) { 1610 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1611 } else { 1612 // Currently the only thing in the header is StrictMode stacks, 1613 // but discussions around event/RPC tracing suggest we might 1614 // put that here too. If so, switch on sub-header tags here. 1615 // But for now, just parse out the StrictMode stuff. 1616 StrictMode.readAndHandleBinderCallViolations(this); 1617 } 1618 // And fat response headers are currently only used when 1619 // there are no exceptions, so return no error: 1620 return 0; 1621 } 1622 return code; 1623 } 1624 1625 /** 1626 * Throw an exception with the given message. Not intended for use 1627 * outside the Parcel class. 1628 * 1629 * @param code Used to determine which exception class to throw. 1630 * @param msg The exception message. 1631 */ 1632 public final void readException(int code, String msg) { 1633 switch (code) { 1634 case EX_SECURITY: 1635 throw new SecurityException(msg); 1636 case EX_BAD_PARCELABLE: 1637 throw new BadParcelableException(msg); 1638 case EX_ILLEGAL_ARGUMENT: 1639 throw new IllegalArgumentException(msg); 1640 case EX_NULL_POINTER: 1641 throw new NullPointerException(msg); 1642 case EX_ILLEGAL_STATE: 1643 throw new IllegalStateException(msg); 1644 case EX_NETWORK_MAIN_THREAD: 1645 throw new NetworkOnMainThreadException(); 1646 case EX_UNSUPPORTED_OPERATION: 1647 throw new UnsupportedOperationException(msg); 1648 case EX_SERVICE_SPECIFIC: 1649 throw new ServiceSpecificException(readInt(), msg); 1650 } 1651 throw new RuntimeException("Unknown exception code: " + code 1652 + " msg " + msg); 1653 } 1654 1655 /** 1656 * Read an integer value from the parcel at the current dataPosition(). 1657 */ 1658 public final int readInt() { 1659 return nativeReadInt(mNativePtr); 1660 } 1661 1662 /** 1663 * Read a long integer value from the parcel at the current dataPosition(). 1664 */ 1665 public final long readLong() { 1666 return nativeReadLong(mNativePtr); 1667 } 1668 1669 /** 1670 * Read a floating point value from the parcel at the current 1671 * dataPosition(). 1672 */ 1673 public final float readFloat() { 1674 return nativeReadFloat(mNativePtr); 1675 } 1676 1677 /** 1678 * Read a double precision floating point value from the parcel at the 1679 * current dataPosition(). 1680 */ 1681 public final double readDouble() { 1682 return nativeReadDouble(mNativePtr); 1683 } 1684 1685 /** 1686 * Read a string value from the parcel at the current dataPosition(). 1687 */ 1688 public final String readString() { 1689 return nativeReadString(mNativePtr); 1690 } 1691 1692 /** 1693 * Read a CharSequence value from the parcel at the current dataPosition(). 1694 * @hide 1695 */ 1696 public final CharSequence readCharSequence() { 1697 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1698 } 1699 1700 /** 1701 * Read an object from the parcel at the current dataPosition(). 1702 */ 1703 public final IBinder readStrongBinder() { 1704 return nativeReadStrongBinder(mNativePtr); 1705 } 1706 1707 /** 1708 * Read a FileDescriptor from the parcel at the current dataPosition(). 1709 */ 1710 public final ParcelFileDescriptor readFileDescriptor() { 1711 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1712 return fd != null ? new ParcelFileDescriptor(fd) : null; 1713 } 1714 1715 /** {@hide} */ 1716 public final FileDescriptor readRawFileDescriptor() { 1717 return nativeReadFileDescriptor(mNativePtr); 1718 } 1719 1720 /** 1721 * {@hide} 1722 * Read and return a new array of FileDescriptors from the parcel. 1723 * @return the FileDescriptor array, or null if the array is null. 1724 **/ 1725 public final FileDescriptor[] createRawFileDescriptorArray() { 1726 int N = readInt(); 1727 if (N < 0) { 1728 return null; 1729 } 1730 FileDescriptor[] f = new FileDescriptor[N]; 1731 for (int i = 0; i < N; i++) { 1732 f[i] = readRawFileDescriptor(); 1733 } 1734 return f; 1735 } 1736 1737 /** 1738 * {@hide} 1739 * Read an array of FileDescriptors from a parcel. 1740 * The passed array must be exactly the length of the array in the parcel. 1741 * @return the FileDescriptor array, or null if the array is null. 1742 **/ 1743 public final void readRawFileDescriptorArray(FileDescriptor[] val) { 1744 int N = readInt(); 1745 if (N == val.length) { 1746 for (int i=0; i<N; i++) { 1747 val[i] = readRawFileDescriptor(); 1748 } 1749 } else { 1750 throw new RuntimeException("bad array lengths"); 1751 } 1752 } 1753 1754 1755 /*package*/ static native FileDescriptor openFileDescriptor(String file, 1756 int mode) throws FileNotFoundException; 1757 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 1758 throws IOException; 1759 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 1760 throws IOException; 1761 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 1762 1763 /** 1764 * Read a byte value from the parcel at the current dataPosition(). 1765 */ 1766 public final byte readByte() { 1767 return (byte)(readInt() & 0xff); 1768 } 1769 1770 /** 1771 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1772 * been written with {@link #writeBundle}. Read into an existing Map object 1773 * from the parcel at the current dataPosition(). 1774 */ 1775 public final void readMap(Map outVal, ClassLoader loader) { 1776 int N = readInt(); 1777 readMapInternal(outVal, N, loader); 1778 } 1779 1780 /** 1781 * Read into an existing List object from the parcel at the current 1782 * dataPosition(), using the given class loader to load any enclosed 1783 * Parcelables. If it is null, the default class loader is used. 1784 */ 1785 public final void readList(List outVal, ClassLoader loader) { 1786 int N = readInt(); 1787 readListInternal(outVal, N, loader); 1788 } 1789 1790 /** 1791 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1792 * been written with {@link #writeBundle}. Read and return a new HashMap 1793 * object from the parcel at the current dataPosition(), using the given 1794 * class loader to load any enclosed Parcelables. Returns null if 1795 * the previously written map object was null. 1796 */ 1797 public final HashMap readHashMap(ClassLoader loader) 1798 { 1799 int N = readInt(); 1800 if (N < 0) { 1801 return null; 1802 } 1803 HashMap m = new HashMap(N); 1804 readMapInternal(m, N, loader); 1805 return m; 1806 } 1807 1808 /** 1809 * Read and return a new Bundle object from the parcel at the current 1810 * dataPosition(). Returns null if the previously written Bundle object was 1811 * null. 1812 */ 1813 public final Bundle readBundle() { 1814 return readBundle(null); 1815 } 1816 1817 /** 1818 * Read and return a new Bundle object from the parcel at the current 1819 * dataPosition(), using the given class loader to initialize the class 1820 * loader of the Bundle for later retrieval of Parcelable objects. 1821 * Returns null if the previously written Bundle object was null. 1822 */ 1823 public final Bundle readBundle(ClassLoader loader) { 1824 int length = readInt(); 1825 if (length < 0) { 1826 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1827 return null; 1828 } 1829 1830 final Bundle bundle = new Bundle(this, length); 1831 if (loader != null) { 1832 bundle.setClassLoader(loader); 1833 } 1834 return bundle; 1835 } 1836 1837 /** 1838 * Read and return a new Bundle object from the parcel at the current 1839 * dataPosition(). Returns null if the previously written Bundle object was 1840 * null. 1841 */ 1842 public final PersistableBundle readPersistableBundle() { 1843 return readPersistableBundle(null); 1844 } 1845 1846 /** 1847 * Read and return a new Bundle object from the parcel at the current 1848 * dataPosition(), using the given class loader to initialize the class 1849 * loader of the Bundle for later retrieval of Parcelable objects. 1850 * Returns null if the previously written Bundle object was null. 1851 */ 1852 public final PersistableBundle readPersistableBundle(ClassLoader loader) { 1853 int length = readInt(); 1854 if (length < 0) { 1855 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1856 return null; 1857 } 1858 1859 final PersistableBundle bundle = new PersistableBundle(this, length); 1860 if (loader != null) { 1861 bundle.setClassLoader(loader); 1862 } 1863 return bundle; 1864 } 1865 1866 /** 1867 * Read a Size from the parcel at the current dataPosition(). 1868 */ 1869 public final Size readSize() { 1870 final int width = readInt(); 1871 final int height = readInt(); 1872 return new Size(width, height); 1873 } 1874 1875 /** 1876 * Read a SizeF from the parcel at the current dataPosition(). 1877 */ 1878 public final SizeF readSizeF() { 1879 final float width = readFloat(); 1880 final float height = readFloat(); 1881 return new SizeF(width, height); 1882 } 1883 1884 /** 1885 * Read and return a byte[] object from the parcel. 1886 */ 1887 public final byte[] createByteArray() { 1888 return nativeCreateByteArray(mNativePtr); 1889 } 1890 1891 /** 1892 * Read a byte[] object from the parcel and copy it into the 1893 * given byte array. 1894 */ 1895 public final void readByteArray(byte[] val) { 1896 // TODO: make this a native method to avoid the extra copy. 1897 byte[] ba = createByteArray(); 1898 if (ba.length == val.length) { 1899 System.arraycopy(ba, 0, val, 0, ba.length); 1900 } else { 1901 throw new RuntimeException("bad array lengths"); 1902 } 1903 } 1904 1905 /** 1906 * Read a blob of data from the parcel and return it as a byte array. 1907 * {@hide} 1908 * {@SystemApi} 1909 */ 1910 public final byte[] readBlob() { 1911 return nativeReadBlob(mNativePtr); 1912 } 1913 1914 /** 1915 * Read and return a String[] object from the parcel. 1916 * {@hide} 1917 */ 1918 public final String[] readStringArray() { 1919 String[] array = null; 1920 1921 int length = readInt(); 1922 if (length >= 0) 1923 { 1924 array = new String[length]; 1925 1926 for (int i = 0 ; i < length ; i++) 1927 { 1928 array[i] = readString(); 1929 } 1930 } 1931 1932 return array; 1933 } 1934 1935 /** 1936 * Read and return a CharSequence[] object from the parcel. 1937 * {@hide} 1938 */ 1939 public final CharSequence[] readCharSequenceArray() { 1940 CharSequence[] array = null; 1941 1942 int length = readInt(); 1943 if (length >= 0) 1944 { 1945 array = new CharSequence[length]; 1946 1947 for (int i = 0 ; i < length ; i++) 1948 { 1949 array[i] = readCharSequence(); 1950 } 1951 } 1952 1953 return array; 1954 } 1955 1956 /** 1957 * Read and return an ArrayList<CharSequence> object from the parcel. 1958 * {@hide} 1959 */ 1960 public final ArrayList<CharSequence> readCharSequenceList() { 1961 ArrayList<CharSequence> array = null; 1962 1963 int length = readInt(); 1964 if (length >= 0) { 1965 array = new ArrayList<CharSequence>(length); 1966 1967 for (int i = 0 ; i < length ; i++) { 1968 array.add(readCharSequence()); 1969 } 1970 } 1971 1972 return array; 1973 } 1974 1975 /** 1976 * Read and return a new ArrayList object from the parcel at the current 1977 * dataPosition(). Returns null if the previously written list object was 1978 * null. The given class loader will be used to load any enclosed 1979 * Parcelables. 1980 */ 1981 public final ArrayList readArrayList(ClassLoader loader) { 1982 int N = readInt(); 1983 if (N < 0) { 1984 return null; 1985 } 1986 ArrayList l = new ArrayList(N); 1987 readListInternal(l, N, loader); 1988 return l; 1989 } 1990 1991 /** 1992 * Read and return a new Object array from the parcel at the current 1993 * dataPosition(). Returns null if the previously written array was 1994 * null. The given class loader will be used to load any enclosed 1995 * Parcelables. 1996 */ 1997 public final Object[] readArray(ClassLoader loader) { 1998 int N = readInt(); 1999 if (N < 0) { 2000 return null; 2001 } 2002 Object[] l = new Object[N]; 2003 readArrayInternal(l, N, loader); 2004 return l; 2005 } 2006 2007 /** 2008 * Read and return a new SparseArray object from the parcel at the current 2009 * dataPosition(). Returns null if the previously written list object was 2010 * null. The given class loader will be used to load any enclosed 2011 * Parcelables. 2012 */ 2013 public final SparseArray readSparseArray(ClassLoader loader) { 2014 int N = readInt(); 2015 if (N < 0) { 2016 return null; 2017 } 2018 SparseArray sa = new SparseArray(N); 2019 readSparseArrayInternal(sa, N, loader); 2020 return sa; 2021 } 2022 2023 /** 2024 * Read and return a new SparseBooleanArray object from the parcel at the current 2025 * dataPosition(). Returns null if the previously written list object was 2026 * null. 2027 */ 2028 public final SparseBooleanArray readSparseBooleanArray() { 2029 int N = readInt(); 2030 if (N < 0) { 2031 return null; 2032 } 2033 SparseBooleanArray sa = new SparseBooleanArray(N); 2034 readSparseBooleanArrayInternal(sa, N); 2035 return sa; 2036 } 2037 2038 /** 2039 * Read and return a new ArrayList containing a particular object type from 2040 * the parcel that was written with {@link #writeTypedList} at the 2041 * current dataPosition(). Returns null if the 2042 * previously written list object was null. The list <em>must</em> have 2043 * previously been written via {@link #writeTypedList} with the same object 2044 * type. 2045 * 2046 * @return A newly created ArrayList containing objects with the same data 2047 * as those that were previously written. 2048 * 2049 * @see #writeTypedList 2050 */ 2051 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 2052 int N = readInt(); 2053 if (N < 0) { 2054 return null; 2055 } 2056 ArrayList<T> l = new ArrayList<T>(N); 2057 while (N > 0) { 2058 if (readInt() != 0) { 2059 l.add(c.createFromParcel(this)); 2060 } else { 2061 l.add(null); 2062 } 2063 N--; 2064 } 2065 return l; 2066 } 2067 2068 /** 2069 * Read into the given List items containing a particular object type 2070 * that were written with {@link #writeTypedList} at the 2071 * current dataPosition(). The list <em>must</em> have 2072 * previously been written via {@link #writeTypedList} with the same object 2073 * type. 2074 * 2075 * @return A newly created ArrayList containing objects with the same data 2076 * as those that were previously written. 2077 * 2078 * @see #writeTypedList 2079 */ 2080 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 2081 int M = list.size(); 2082 int N = readInt(); 2083 int i = 0; 2084 for (; i < M && i < N; i++) { 2085 if (readInt() != 0) { 2086 list.set(i, c.createFromParcel(this)); 2087 } else { 2088 list.set(i, null); 2089 } 2090 } 2091 for (; i<N; i++) { 2092 if (readInt() != 0) { 2093 list.add(c.createFromParcel(this)); 2094 } else { 2095 list.add(null); 2096 } 2097 } 2098 for (; i<M; i++) { 2099 list.remove(N); 2100 } 2101 } 2102 2103 /** 2104 * Read and return a new ArrayList containing String objects from 2105 * the parcel that was written with {@link #writeStringList} at the 2106 * current dataPosition(). Returns null if the 2107 * previously written list object was null. 2108 * 2109 * @return A newly created ArrayList containing strings with the same data 2110 * as those that were previously written. 2111 * 2112 * @see #writeStringList 2113 */ 2114 public final ArrayList<String> createStringArrayList() { 2115 int N = readInt(); 2116 if (N < 0) { 2117 return null; 2118 } 2119 ArrayList<String> l = new ArrayList<String>(N); 2120 while (N > 0) { 2121 l.add(readString()); 2122 N--; 2123 } 2124 return l; 2125 } 2126 2127 /** 2128 * Read and return a new ArrayList containing IBinder objects from 2129 * the parcel that was written with {@link #writeBinderList} at the 2130 * current dataPosition(). Returns null if the 2131 * previously written list object was null. 2132 * 2133 * @return A newly created ArrayList containing strings with the same data 2134 * as those that were previously written. 2135 * 2136 * @see #writeBinderList 2137 */ 2138 public final ArrayList<IBinder> createBinderArrayList() { 2139 int N = readInt(); 2140 if (N < 0) { 2141 return null; 2142 } 2143 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 2144 while (N > 0) { 2145 l.add(readStrongBinder()); 2146 N--; 2147 } 2148 return l; 2149 } 2150 2151 /** 2152 * Read into the given List items String objects that were written with 2153 * {@link #writeStringList} at the current dataPosition(). 2154 * 2155 * @return A newly created ArrayList containing strings with the same data 2156 * as those that were previously written. 2157 * 2158 * @see #writeStringList 2159 */ 2160 public final void readStringList(List<String> list) { 2161 int M = list.size(); 2162 int N = readInt(); 2163 int i = 0; 2164 for (; i < M && i < N; i++) { 2165 list.set(i, readString()); 2166 } 2167 for (; i<N; i++) { 2168 list.add(readString()); 2169 } 2170 for (; i<M; i++) { 2171 list.remove(N); 2172 } 2173 } 2174 2175 /** 2176 * Read into the given List items IBinder objects that were written with 2177 * {@link #writeBinderList} at the current dataPosition(). 2178 * 2179 * @return A newly created ArrayList containing strings with the same data 2180 * as those that were previously written. 2181 * 2182 * @see #writeBinderList 2183 */ 2184 public final void readBinderList(List<IBinder> list) { 2185 int M = list.size(); 2186 int N = readInt(); 2187 int i = 0; 2188 for (; i < M && i < N; i++) { 2189 list.set(i, readStrongBinder()); 2190 } 2191 for (; i<N; i++) { 2192 list.add(readStrongBinder()); 2193 } 2194 for (; i<M; i++) { 2195 list.remove(N); 2196 } 2197 } 2198 2199 /** 2200 * Read and return a new array containing a particular object type from 2201 * the parcel at the current dataPosition(). Returns null if the 2202 * previously written array was null. The array <em>must</em> have 2203 * previously been written via {@link #writeTypedArray} with the same 2204 * object type. 2205 * 2206 * @return A newly created array containing objects with the same data 2207 * as those that were previously written. 2208 * 2209 * @see #writeTypedArray 2210 */ 2211 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 2212 int N = readInt(); 2213 if (N < 0) { 2214 return null; 2215 } 2216 T[] l = c.newArray(N); 2217 for (int i=0; i<N; i++) { 2218 if (readInt() != 0) { 2219 l[i] = c.createFromParcel(this); 2220 } 2221 } 2222 return l; 2223 } 2224 2225 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 2226 int N = readInt(); 2227 if (N == val.length) { 2228 for (int i=0; i<N; i++) { 2229 if (readInt() != 0) { 2230 val[i] = c.createFromParcel(this); 2231 } else { 2232 val[i] = null; 2233 } 2234 } 2235 } else { 2236 throw new RuntimeException("bad array lengths"); 2237 } 2238 } 2239 2240 /** 2241 * @deprecated 2242 * @hide 2243 */ 2244 @Deprecated 2245 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 2246 return createTypedArray(c); 2247 } 2248 2249 /** 2250 * Read and return a typed Parcelable object from a parcel. 2251 * Returns null if the previous written object was null. 2252 * The object <em>must</em> have previous been written via 2253 * {@link #writeTypedObject} with the same object type. 2254 * 2255 * @return A newly created object of the type that was previously 2256 * written. 2257 * 2258 * @see #writeTypedObject 2259 */ 2260 public final <T> T readTypedObject(Parcelable.Creator<T> c) { 2261 if (readInt() != 0) { 2262 return c.createFromParcel(this); 2263 } else { 2264 return null; 2265 } 2266 } 2267 2268 /** 2269 * Write a heterogeneous array of Parcelable objects into the Parcel. 2270 * Each object in the array is written along with its class name, so 2271 * that the correct class can later be instantiated. As a result, this 2272 * has significantly more overhead than {@link #writeTypedArray}, but will 2273 * correctly handle an array containing more than one type of object. 2274 * 2275 * @param value The array of objects to be written. 2276 * @param parcelableFlags Contextual flags as per 2277 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 2278 * 2279 * @see #writeTypedArray 2280 */ 2281 public final <T extends Parcelable> void writeParcelableArray(T[] value, 2282 int parcelableFlags) { 2283 if (value != null) { 2284 int N = value.length; 2285 writeInt(N); 2286 for (int i=0; i<N; i++) { 2287 writeParcelable(value[i], parcelableFlags); 2288 } 2289 } else { 2290 writeInt(-1); 2291 } 2292 } 2293 2294 /** 2295 * Read a typed object from a parcel. The given class loader will be 2296 * used to load any enclosed Parcelables. If it is null, the default class 2297 * loader will be used. 2298 */ 2299 public final Object readValue(ClassLoader loader) { 2300 int type = readInt(); 2301 2302 switch (type) { 2303 case VAL_NULL: 2304 return null; 2305 2306 case VAL_STRING: 2307 return readString(); 2308 2309 case VAL_INTEGER: 2310 return readInt(); 2311 2312 case VAL_MAP: 2313 return readHashMap(loader); 2314 2315 case VAL_PARCELABLE: 2316 return readParcelable(loader); 2317 2318 case VAL_SHORT: 2319 return (short) readInt(); 2320 2321 case VAL_LONG: 2322 return readLong(); 2323 2324 case VAL_FLOAT: 2325 return readFloat(); 2326 2327 case VAL_DOUBLE: 2328 return readDouble(); 2329 2330 case VAL_BOOLEAN: 2331 return readInt() == 1; 2332 2333 case VAL_CHARSEQUENCE: 2334 return readCharSequence(); 2335 2336 case VAL_LIST: 2337 return readArrayList(loader); 2338 2339 case VAL_BOOLEANARRAY: 2340 return createBooleanArray(); 2341 2342 case VAL_BYTEARRAY: 2343 return createByteArray(); 2344 2345 case VAL_STRINGARRAY: 2346 return readStringArray(); 2347 2348 case VAL_CHARSEQUENCEARRAY: 2349 return readCharSequenceArray(); 2350 2351 case VAL_IBINDER: 2352 return readStrongBinder(); 2353 2354 case VAL_OBJECTARRAY: 2355 return readArray(loader); 2356 2357 case VAL_INTARRAY: 2358 return createIntArray(); 2359 2360 case VAL_LONGARRAY: 2361 return createLongArray(); 2362 2363 case VAL_BYTE: 2364 return readByte(); 2365 2366 case VAL_SERIALIZABLE: 2367 return readSerializable(loader); 2368 2369 case VAL_PARCELABLEARRAY: 2370 return readParcelableArray(loader); 2371 2372 case VAL_SPARSEARRAY: 2373 return readSparseArray(loader); 2374 2375 case VAL_SPARSEBOOLEANARRAY: 2376 return readSparseBooleanArray(); 2377 2378 case VAL_BUNDLE: 2379 return readBundle(loader); // loading will be deferred 2380 2381 case VAL_PERSISTABLEBUNDLE: 2382 return readPersistableBundle(loader); 2383 2384 case VAL_SIZE: 2385 return readSize(); 2386 2387 case VAL_SIZEF: 2388 return readSizeF(); 2389 2390 default: 2391 int off = dataPosition() - 4; 2392 throw new RuntimeException( 2393 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2394 } 2395 } 2396 2397 /** 2398 * Read and return a new Parcelable from the parcel. The given class loader 2399 * will be used to load any enclosed Parcelables. If it is null, the default 2400 * class loader will be used. 2401 * @param loader A ClassLoader from which to instantiate the Parcelable 2402 * object, or null for the default class loader. 2403 * @return Returns the newly created Parcelable, or null if a null 2404 * object has been written. 2405 * @throws BadParcelableException Throws BadParcelableException if there 2406 * was an error trying to instantiate the Parcelable. 2407 */ 2408 @SuppressWarnings("unchecked") 2409 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2410 Parcelable.Creator<?> creator = readParcelableCreator(loader); 2411 if (creator == null) { 2412 return null; 2413 } 2414 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2415 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2416 (Parcelable.ClassLoaderCreator<?>) creator; 2417 return (T) classLoaderCreator.createFromParcel(this, loader); 2418 } 2419 return (T) creator.createFromParcel(this); 2420 } 2421 2422 /** @hide */ 2423 @SuppressWarnings("unchecked") 2424 public final <T extends Parcelable> T readCreator(Parcelable.Creator<?> creator, 2425 ClassLoader loader) { 2426 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2427 Parcelable.ClassLoaderCreator<?> classLoaderCreator = 2428 (Parcelable.ClassLoaderCreator<?>) creator; 2429 return (T) classLoaderCreator.createFromParcel(this, loader); 2430 } 2431 return (T) creator.createFromParcel(this); 2432 } 2433 2434 /** @hide */ 2435 public final Parcelable.Creator<?> readParcelableCreator(ClassLoader loader) { 2436 String name = readString(); 2437 if (name == null) { 2438 return null; 2439 } 2440 Parcelable.Creator<?> creator; 2441 synchronized (mCreators) { 2442 HashMap<String,Parcelable.Creator<?>> map = mCreators.get(loader); 2443 if (map == null) { 2444 map = new HashMap<>(); 2445 mCreators.put(loader, map); 2446 } 2447 creator = map.get(name); 2448 if (creator == null) { 2449 try { 2450 // If loader == null, explicitly emulate Class.forName(String) "caller 2451 // classloader" behavior. 2452 ClassLoader parcelableClassLoader = 2453 (loader == null ? getClass().getClassLoader() : loader); 2454 // Avoid initializing the Parcelable class until we know it implements 2455 // Parcelable and has the necessary CREATOR field. http://b/1171613. 2456 Class<?> parcelableClass = Class.forName(name, false /* initialize */, 2457 parcelableClassLoader); 2458 if (!Parcelable.class.isAssignableFrom(parcelableClass)) { 2459 throw new BadParcelableException("Parcelable protocol requires that the " 2460 + "class implements Parcelable"); 2461 } 2462 Field f = parcelableClass.getField("CREATOR"); 2463 if ((f.getModifiers() & Modifier.STATIC) == 0) { 2464 throw new BadParcelableException("Parcelable protocol requires " 2465 + "the CREATOR object to be static on class " + name); 2466 } 2467 Class<?> creatorType = f.getType(); 2468 if (!Parcelable.Creator.class.isAssignableFrom(creatorType)) { 2469 // Fail before calling Field.get(), not after, to avoid initializing 2470 // parcelableClass unnecessarily. 2471 throw new BadParcelableException("Parcelable protocol requires a " 2472 + "Parcelable.Creator object called " 2473 + "CREATOR on class " + name); 2474 } 2475 creator = (Parcelable.Creator<?>) f.get(null); 2476 } 2477 catch (IllegalAccessException e) { 2478 Log.e(TAG, "Illegal access when unmarshalling: " + name, e); 2479 throw new BadParcelableException( 2480 "IllegalAccessException when unmarshalling: " + name); 2481 } 2482 catch (ClassNotFoundException e) { 2483 Log.e(TAG, "Class not found when unmarshalling: " + name, e); 2484 throw new BadParcelableException( 2485 "ClassNotFoundException when unmarshalling: " + name); 2486 } 2487 catch (NoSuchFieldException e) { 2488 throw new BadParcelableException("Parcelable protocol requires a " 2489 + "Parcelable.Creator object called " 2490 + "CREATOR on class " + name); 2491 } 2492 if (creator == null) { 2493 throw new BadParcelableException("Parcelable protocol requires a " 2494 + "non-null Parcelable.Creator object called " 2495 + "CREATOR on class " + name); 2496 } 2497 2498 map.put(name, creator); 2499 } 2500 } 2501 2502 return creator; 2503 } 2504 2505 /** 2506 * Read and return a new Parcelable array from the parcel. 2507 * The given class loader will be used to load any enclosed 2508 * Parcelables. 2509 * @return the Parcelable array, or null if the array is null 2510 */ 2511 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2512 int N = readInt(); 2513 if (N < 0) { 2514 return null; 2515 } 2516 Parcelable[] p = new Parcelable[N]; 2517 for (int i = 0; i < N; i++) { 2518 p[i] = readParcelable(loader); 2519 } 2520 return p; 2521 } 2522 2523 /** 2524 * Read and return a new Serializable object from the parcel. 2525 * @return the Serializable object, or null if the Serializable name 2526 * wasn't found in the parcel. 2527 */ 2528 public final Serializable readSerializable() { 2529 return readSerializable(null); 2530 } 2531 2532 private final Serializable readSerializable(final ClassLoader loader) { 2533 String name = readString(); 2534 if (name == null) { 2535 // For some reason we were unable to read the name of the Serializable (either there 2536 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2537 // return null, which indicates that the name wasn't found in the parcel. 2538 return null; 2539 } 2540 2541 byte[] serializedData = createByteArray(); 2542 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2543 try { 2544 ObjectInputStream ois = new ObjectInputStream(bais) { 2545 @Override 2546 protected Class<?> resolveClass(ObjectStreamClass osClass) 2547 throws IOException, ClassNotFoundException { 2548 // try the custom classloader if provided 2549 if (loader != null) { 2550 Class<?> c = Class.forName(osClass.getName(), false, loader); 2551 if (c != null) { 2552 return c; 2553 } 2554 } 2555 return super.resolveClass(osClass); 2556 } 2557 }; 2558 return (Serializable) ois.readObject(); 2559 } catch (IOException ioe) { 2560 throw new RuntimeException("Parcelable encountered " + 2561 "IOException reading a Serializable object (name = " + name + 2562 ")", ioe); 2563 } catch (ClassNotFoundException cnfe) { 2564 throw new RuntimeException("Parcelable encountered " + 2565 "ClassNotFoundException reading a Serializable object (name = " 2566 + name + ")", cnfe); 2567 } 2568 } 2569 2570 // Cache of previously looked up CREATOR.createFromParcel() methods for 2571 // particular classes. Keys are the names of the classes, values are 2572 // Method objects. 2573 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator<?>>> 2574 mCreators = new HashMap<>(); 2575 2576 /** @hide for internal use only. */ 2577 static protected final Parcel obtain(int obj) { 2578 throw new UnsupportedOperationException(); 2579 } 2580 2581 /** @hide */ 2582 static protected final Parcel obtain(long obj) { 2583 final Parcel[] pool = sHolderPool; 2584 synchronized (pool) { 2585 Parcel p; 2586 for (int i=0; i<POOL_SIZE; i++) { 2587 p = pool[i]; 2588 if (p != null) { 2589 pool[i] = null; 2590 if (DEBUG_RECYCLE) { 2591 p.mStack = new RuntimeException(); 2592 } 2593 p.init(obj); 2594 return p; 2595 } 2596 } 2597 } 2598 return new Parcel(obj); 2599 } 2600 2601 private Parcel(long nativePtr) { 2602 if (DEBUG_RECYCLE) { 2603 mStack = new RuntimeException(); 2604 } 2605 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2606 init(nativePtr); 2607 } 2608 2609 private void init(long nativePtr) { 2610 if (nativePtr != 0) { 2611 mNativePtr = nativePtr; 2612 mOwnsNativeParcelObject = false; 2613 } else { 2614 mNativePtr = nativeCreate(); 2615 mOwnsNativeParcelObject = true; 2616 } 2617 } 2618 2619 private void freeBuffer() { 2620 if (mOwnsNativeParcelObject) { 2621 nativeFreeBuffer(mNativePtr); 2622 } 2623 } 2624 2625 private void destroy() { 2626 if (mNativePtr != 0) { 2627 if (mOwnsNativeParcelObject) { 2628 nativeDestroy(mNativePtr); 2629 } 2630 mNativePtr = 0; 2631 } 2632 } 2633 2634 @Override 2635 protected void finalize() throws Throwable { 2636 if (DEBUG_RECYCLE) { 2637 if (mStack != null) { 2638 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2639 } 2640 } 2641 destroy(); 2642 } 2643 2644 /* package */ void readMapInternal(Map outVal, int N, 2645 ClassLoader loader) { 2646 while (N > 0) { 2647 Object key = readValue(loader); 2648 Object value = readValue(loader); 2649 outVal.put(key, value); 2650 N--; 2651 } 2652 } 2653 2654 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2655 ClassLoader loader) { 2656 if (DEBUG_ARRAY_MAP) { 2657 RuntimeException here = new RuntimeException("here"); 2658 here.fillInStackTrace(); 2659 Log.d(TAG, "Reading " + N + " ArrayMap entries", here); 2660 } 2661 int startPos; 2662 while (N > 0) { 2663 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 2664 String key = readString(); 2665 Object value = readValue(loader); 2666 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read #" + (N-1) + " " 2667 + (dataPosition()-startPos) + " bytes: key=0x" 2668 + Integer.toHexString((key != null ? key.hashCode() : 0)) + " " + key); 2669 outVal.append(key, value); 2670 N--; 2671 } 2672 outVal.validate(); 2673 } 2674 2675 /* package */ void readArrayMapSafelyInternal(ArrayMap outVal, int N, 2676 ClassLoader loader) { 2677 if (DEBUG_ARRAY_MAP) { 2678 RuntimeException here = new RuntimeException("here"); 2679 here.fillInStackTrace(); 2680 Log.d(TAG, "Reading safely " + N + " ArrayMap entries", here); 2681 } 2682 while (N > 0) { 2683 String key = readString(); 2684 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read safe #" + (N-1) + ": key=0x" 2685 + (key != null ? key.hashCode() : 0) + " " + key); 2686 Object value = readValue(loader); 2687 outVal.put(key, value); 2688 N--; 2689 } 2690 } 2691 2692 /** 2693 * @hide For testing only. 2694 */ 2695 public void readArrayMap(ArrayMap outVal, ClassLoader loader) { 2696 final int N = readInt(); 2697 if (N < 0) { 2698 return; 2699 } 2700 readArrayMapInternal(outVal, N, loader); 2701 } 2702 2703 private void readListInternal(List outVal, int N, 2704 ClassLoader loader) { 2705 while (N > 0) { 2706 Object value = readValue(loader); 2707 //Log.d(TAG, "Unmarshalling value=" + value); 2708 outVal.add(value); 2709 N--; 2710 } 2711 } 2712 2713 private void readArrayInternal(Object[] outVal, int N, 2714 ClassLoader loader) { 2715 for (int i = 0; i < N; i++) { 2716 Object value = readValue(loader); 2717 //Log.d(TAG, "Unmarshalling value=" + value); 2718 outVal[i] = value; 2719 } 2720 } 2721 2722 private void readSparseArrayInternal(SparseArray outVal, int N, 2723 ClassLoader loader) { 2724 while (N > 0) { 2725 int key = readInt(); 2726 Object value = readValue(loader); 2727 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2728 outVal.append(key, value); 2729 N--; 2730 } 2731 } 2732 2733 2734 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 2735 while (N > 0) { 2736 int key = readInt(); 2737 boolean value = this.readByte() == 1; 2738 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2739 outVal.append(key, value); 2740 N--; 2741 } 2742 } 2743 2744 /** 2745 * @hide For testing 2746 */ 2747 public long getBlobAshmemSize() { 2748 return nativeGetBlobAshmemSize(mNativePtr); 2749 } 2750} 2751