Parcel.java revision 3d07c94c393831091958fe6a98811843db8973bd
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.util.ArrayList; 38import java.util.Arrays; 39import java.util.HashMap; 40import java.util.List; 41import java.util.Map; 42import java.util.Set; 43 44/** 45 * Container for a message (data and object references) that can 46 * be sent through an IBinder. A Parcel can contain both flattened data 47 * that will be unflattened on the other side of the IPC (using the various 48 * methods here for writing specific types, or the general 49 * {@link Parcelable} interface), and references to live {@link IBinder} 50 * objects that will result in the other side receiving a proxy IBinder 51 * connected with the original IBinder in the Parcel. 52 * 53 * <p class="note">Parcel is <strong>not</strong> a general-purpose 54 * serialization mechanism. This class (and the corresponding 55 * {@link Parcelable} API for placing arbitrary objects into a Parcel) is 56 * designed as a high-performance IPC transport. As such, it is not 57 * appropriate to place any Parcel data in to persistent storage: changes 58 * in the underlying implementation of any of the data in the Parcel can 59 * render older data unreadable.</p> 60 * 61 * <p>The bulk of the Parcel API revolves around reading and writing data 62 * of various types. There are six major classes of such functions available.</p> 63 * 64 * <h3>Primitives</h3> 65 * 66 * <p>The most basic data functions are for writing and reading primitive 67 * data types: {@link #writeByte}, {@link #readByte}, {@link #writeDouble}, 68 * {@link #readDouble}, {@link #writeFloat}, {@link #readFloat}, {@link #writeInt}, 69 * {@link #readInt}, {@link #writeLong}, {@link #readLong}, 70 * {@link #writeString}, {@link #readString}. Most other 71 * data operations are built on top of these. The given data is written and 72 * read using the endianess of the host CPU.</p> 73 * 74 * <h3>Primitive Arrays</h3> 75 * 76 * <p>There are a variety of methods for reading and writing raw arrays 77 * of primitive objects, which generally result in writing a 4-byte length 78 * followed by the primitive data items. The methods for reading can either 79 * read the data into an existing array, or create and return a new array. 80 * These available types are:</p> 81 * 82 * <ul> 83 * <li> {@link #writeBooleanArray(boolean[])}, 84 * {@link #readBooleanArray(boolean[])}, {@link #createBooleanArray()} 85 * <li> {@link #writeByteArray(byte[])}, 86 * {@link #writeByteArray(byte[], int, int)}, {@link #readByteArray(byte[])}, 87 * {@link #createByteArray()} 88 * <li> {@link #writeCharArray(char[])}, {@link #readCharArray(char[])}, 89 * {@link #createCharArray()} 90 * <li> {@link #writeDoubleArray(double[])}, {@link #readDoubleArray(double[])}, 91 * {@link #createDoubleArray()} 92 * <li> {@link #writeFloatArray(float[])}, {@link #readFloatArray(float[])}, 93 * {@link #createFloatArray()} 94 * <li> {@link #writeIntArray(int[])}, {@link #readIntArray(int[])}, 95 * {@link #createIntArray()} 96 * <li> {@link #writeLongArray(long[])}, {@link #readLongArray(long[])}, 97 * {@link #createLongArray()} 98 * <li> {@link #writeStringArray(String[])}, {@link #readStringArray(String[])}, 99 * {@link #createStringArray()}. 100 * <li> {@link #writeSparseBooleanArray(SparseBooleanArray)}, 101 * {@link #readSparseBooleanArray()}. 102 * </ul> 103 * 104 * <h3>Parcelables</h3> 105 * 106 * <p>The {@link Parcelable} protocol provides an extremely efficient (but 107 * low-level) protocol for objects to write and read themselves from Parcels. 108 * You can use the direct methods {@link #writeParcelable(Parcelable, int)} 109 * and {@link #readParcelable(ClassLoader)} or 110 * {@link #writeParcelableArray} and 111 * {@link #readParcelableArray(ClassLoader)} to write or read. These 112 * methods write both the class type and its data to the Parcel, allowing 113 * that class to be reconstructed from the appropriate class loader when 114 * later reading.</p> 115 * 116 * <p>There are also some methods that provide a more efficient way to work 117 * with Parcelables: {@link #writeTypedArray}, 118 * {@link #writeTypedList(List)}, 119 * {@link #readTypedArray} and {@link #readTypedList}. These methods 120 * do not write the class information of the original object: instead, the 121 * caller of the read function must know what type to expect and pass in the 122 * appropriate {@link Parcelable.Creator Parcelable.Creator} instead to 123 * properly construct the new object and read its data. (To more efficient 124 * write and read a single Parceable object, you can directly call 125 * {@link Parcelable#writeToParcel Parcelable.writeToParcel} and 126 * {@link Parcelable.Creator#createFromParcel Parcelable.Creator.createFromParcel} 127 * yourself.)</p> 128 * 129 * <h3>Bundles</h3> 130 * 131 * <p>A special type-safe container, called {@link Bundle}, is available 132 * for key/value maps of heterogeneous values. This has many optimizations 133 * for improved performance when reading and writing data, and its type-safe 134 * API avoids difficult to debug type errors when finally marshalling the 135 * data contents into a Parcel. The methods to use are 136 * {@link #writeBundle(Bundle)}, {@link #readBundle()}, and 137 * {@link #readBundle(ClassLoader)}. 138 * 139 * <h3>Active Objects</h3> 140 * 141 * <p>An unusual feature of Parcel is the ability to read and write active 142 * objects. For these objects the actual contents of the object is not 143 * written, rather a special token referencing the object is written. When 144 * reading the object back from the Parcel, you do not get a new instance of 145 * the object, but rather a handle that operates on the exact same object that 146 * was originally written. There are two forms of active objects available.</p> 147 * 148 * <p>{@link Binder} objects are a core facility of Android's general cross-process 149 * communication system. The {@link IBinder} interface describes an abstract 150 * protocol with a Binder object. Any such interface can be written in to 151 * a Parcel, and upon reading you will receive either the original object 152 * implementing that interface or a special proxy implementation 153 * that communicates calls back to the original object. The methods to use are 154 * {@link #writeStrongBinder(IBinder)}, 155 * {@link #writeStrongInterface(IInterface)}, {@link #readStrongBinder()}, 156 * {@link #writeBinderArray(IBinder[])}, {@link #readBinderArray(IBinder[])}, 157 * {@link #createBinderArray()}, 158 * {@link #writeBinderList(List)}, {@link #readBinderList(List)}, 159 * {@link #createBinderArrayList()}.</p> 160 * 161 * <p>FileDescriptor objects, representing raw Linux file descriptor identifiers, 162 * can be written and {@link ParcelFileDescriptor} objects returned to operate 163 * on the original file descriptor. The returned file descriptor is a dup 164 * of the original file descriptor: the object and fd is different, but 165 * operating on the same underlying file stream, with the same position, etc. 166 * The methods to use are {@link #writeFileDescriptor(FileDescriptor)}, 167 * {@link #readFileDescriptor()}. 168 * 169 * <h3>Untyped Containers</h3> 170 * 171 * <p>A final class of methods are for writing and reading standard Java 172 * containers of arbitrary types. These all revolve around the 173 * {@link #writeValue(Object)} and {@link #readValue(ClassLoader)} methods 174 * which define the types of objects allowed. The container methods are 175 * {@link #writeArray(Object[])}, {@link #readArray(ClassLoader)}, 176 * {@link #writeList(List)}, {@link #readList(List, ClassLoader)}, 177 * {@link #readArrayList(ClassLoader)}, 178 * {@link #writeMap(Map)}, {@link #readMap(Map, ClassLoader)}, 179 * {@link #writeSparseArray(SparseArray)}, 180 * {@link #readSparseArray(ClassLoader)}. 181 */ 182public final class Parcel { 183 private static final boolean DEBUG_RECYCLE = false; 184 private static final boolean DEBUG_ARRAY_MAP = false; 185 private static final String TAG = "Parcel"; 186 187 @SuppressWarnings({"UnusedDeclaration"}) 188 private long mNativePtr; // used by native code 189 190 /** 191 * Flag indicating if {@link #mNativePtr} was allocated by this object, 192 * indicating that we're responsible for its lifecycle. 193 */ 194 private boolean mOwnsNativeParcelObject; 195 196 private RuntimeException mStack; 197 198 private static final int POOL_SIZE = 6; 199 private static final Parcel[] sOwnedPool = new Parcel[POOL_SIZE]; 200 private static final Parcel[] sHolderPool = new Parcel[POOL_SIZE]; 201 202 private static final int VAL_NULL = -1; 203 private static final int VAL_STRING = 0; 204 private static final int VAL_INTEGER = 1; 205 private static final int VAL_MAP = 2; 206 private static final int VAL_BUNDLE = 3; 207 private static final int VAL_PARCELABLE = 4; 208 private static final int VAL_SHORT = 5; 209 private static final int VAL_LONG = 6; 210 private static final int VAL_FLOAT = 7; 211 private static final int VAL_DOUBLE = 8; 212 private static final int VAL_BOOLEAN = 9; 213 private static final int VAL_CHARSEQUENCE = 10; 214 private static final int VAL_LIST = 11; 215 private static final int VAL_SPARSEARRAY = 12; 216 private static final int VAL_BYTEARRAY = 13; 217 private static final int VAL_STRINGARRAY = 14; 218 private static final int VAL_IBINDER = 15; 219 private static final int VAL_PARCELABLEARRAY = 16; 220 private static final int VAL_OBJECTARRAY = 17; 221 private static final int VAL_INTARRAY = 18; 222 private static final int VAL_LONGARRAY = 19; 223 private static final int VAL_BYTE = 20; 224 private static final int VAL_SERIALIZABLE = 21; 225 private static final int VAL_SPARSEBOOLEANARRAY = 22; 226 private static final int VAL_BOOLEANARRAY = 23; 227 private static final int VAL_CHARSEQUENCEARRAY = 24; 228 private static final int VAL_PERSISTABLEBUNDLE = 25; 229 private static final int VAL_SIZE = 26; 230 private static final int VAL_SIZEF = 27; 231 232 // The initial int32 in a Binder call's reply Parcel header: 233 private static final int EX_SECURITY = -1; 234 private static final int EX_BAD_PARCELABLE = -2; 235 private static final int EX_ILLEGAL_ARGUMENT = -3; 236 private static final int EX_NULL_POINTER = -4; 237 private static final int EX_ILLEGAL_STATE = -5; 238 private static final int EX_NETWORK_MAIN_THREAD = -6; 239 private static final int EX_UNSUPPORTED_OPERATION = -7; 240 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 241 242 private static native int nativeDataSize(long nativePtr); 243 private static native int nativeDataAvail(long nativePtr); 244 private static native int nativeDataPosition(long nativePtr); 245 private static native int nativeDataCapacity(long nativePtr); 246 private static native void nativeSetDataSize(long nativePtr, int size); 247 private static native void nativeSetDataPosition(long nativePtr, int pos); 248 private static native void nativeSetDataCapacity(long nativePtr, int size); 249 250 private static native boolean nativePushAllowFds(long nativePtr, boolean allowFds); 251 private static native void nativeRestoreAllowFds(long nativePtr, boolean lastValue); 252 253 private static native void nativeWriteByteArray(long nativePtr, byte[] b, int offset, int len); 254 private static native void nativeWriteBlob(long nativePtr, byte[] b, int offset, int len); 255 private static native void nativeWriteInt(long nativePtr, int val); 256 private static native void nativeWriteLong(long nativePtr, long val); 257 private static native void nativeWriteFloat(long nativePtr, float val); 258 private static native void nativeWriteDouble(long nativePtr, double val); 259 private static native void nativeWriteString(long nativePtr, String val); 260 private static native void nativeWriteStrongBinder(long nativePtr, IBinder val); 261 private static native void nativeWriteFileDescriptor(long nativePtr, FileDescriptor val); 262 263 private static native byte[] nativeCreateByteArray(long nativePtr); 264 private static native byte[] nativeReadBlob(long nativePtr); 265 private static native int nativeReadInt(long nativePtr); 266 private static native long nativeReadLong(long nativePtr); 267 private static native float nativeReadFloat(long nativePtr); 268 private static native double nativeReadDouble(long nativePtr); 269 private static native String nativeReadString(long nativePtr); 270 private static native IBinder nativeReadStrongBinder(long nativePtr); 271 private static native FileDescriptor nativeReadFileDescriptor(long nativePtr); 272 273 private static native long nativeCreate(); 274 private static native void nativeFreeBuffer(long nativePtr); 275 private static native void nativeDestroy(long nativePtr); 276 277 private static native byte[] nativeMarshall(long nativePtr); 278 private static native void nativeUnmarshall( 279 long nativePtr, byte[] data, int offset, int length); 280 private static native void nativeAppendFrom( 281 long thisNativePtr, long otherNativePtr, int offset, int length); 282 private static native boolean nativeHasFileDescriptors(long nativePtr); 283 private static native void nativeWriteInterfaceToken(long nativePtr, String interfaceName); 284 private static native void nativeEnforceInterface(long nativePtr, String interfaceName); 285 286 public final static Parcelable.Creator<String> STRING_CREATOR 287 = new Parcelable.Creator<String>() { 288 public String createFromParcel(Parcel source) { 289 return source.readString(); 290 } 291 public String[] newArray(int size) { 292 return new String[size]; 293 } 294 }; 295 296 /** 297 * Retrieve a new Parcel object from the pool. 298 */ 299 public static Parcel obtain() { 300 final Parcel[] pool = sOwnedPool; 301 synchronized (pool) { 302 Parcel p; 303 for (int i=0; i<POOL_SIZE; i++) { 304 p = pool[i]; 305 if (p != null) { 306 pool[i] = null; 307 if (DEBUG_RECYCLE) { 308 p.mStack = new RuntimeException(); 309 } 310 return p; 311 } 312 } 313 } 314 return new Parcel(0); 315 } 316 317 /** 318 * Put a Parcel object back into the pool. You must not touch 319 * the object after this call. 320 */ 321 public final void recycle() { 322 if (DEBUG_RECYCLE) mStack = null; 323 freeBuffer(); 324 325 final Parcel[] pool; 326 if (mOwnsNativeParcelObject) { 327 pool = sOwnedPool; 328 } else { 329 mNativePtr = 0; 330 pool = sHolderPool; 331 } 332 333 synchronized (pool) { 334 for (int i=0; i<POOL_SIZE; i++) { 335 if (pool[i] == null) { 336 pool[i] = this; 337 return; 338 } 339 } 340 } 341 } 342 343 /** @hide */ 344 public static native long getGlobalAllocSize(); 345 346 /** @hide */ 347 public static native long getGlobalAllocCount(); 348 349 /** 350 * Returns the total amount of data contained in the parcel. 351 */ 352 public final int dataSize() { 353 return nativeDataSize(mNativePtr); 354 } 355 356 /** 357 * Returns the amount of data remaining to be read from the 358 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 359 */ 360 public final int dataAvail() { 361 return nativeDataAvail(mNativePtr); 362 } 363 364 /** 365 * Returns the current position in the parcel data. Never 366 * more than {@link #dataSize}. 367 */ 368 public final int dataPosition() { 369 return nativeDataPosition(mNativePtr); 370 } 371 372 /** 373 * Returns the total amount of space in the parcel. This is always 374 * >= {@link #dataSize}. The difference between it and dataSize() is the 375 * amount of room left until the parcel needs to re-allocate its 376 * data buffer. 377 */ 378 public final int dataCapacity() { 379 return nativeDataCapacity(mNativePtr); 380 } 381 382 /** 383 * Change the amount of data in the parcel. Can be either smaller or 384 * larger than the current size. If larger than the current capacity, 385 * more memory will be allocated. 386 * 387 * @param size The new number of bytes in the Parcel. 388 */ 389 public final void setDataSize(int size) { 390 nativeSetDataSize(mNativePtr, size); 391 } 392 393 /** 394 * Move the current read/write position in the parcel. 395 * @param pos New offset in the parcel; must be between 0 and 396 * {@link #dataSize}. 397 */ 398 public final void setDataPosition(int pos) { 399 nativeSetDataPosition(mNativePtr, pos); 400 } 401 402 /** 403 * Change the capacity (current available space) of the parcel. 404 * 405 * @param size The new capacity of the parcel, in bytes. Can not be 406 * less than {@link #dataSize} -- that is, you can not drop existing data 407 * with this method. 408 */ 409 public final void setDataCapacity(int size) { 410 nativeSetDataCapacity(mNativePtr, size); 411 } 412 413 /** @hide */ 414 public final boolean pushAllowFds(boolean allowFds) { 415 return nativePushAllowFds(mNativePtr, allowFds); 416 } 417 418 /** @hide */ 419 public final void restoreAllowFds(boolean lastValue) { 420 nativeRestoreAllowFds(mNativePtr, lastValue); 421 } 422 423 /** 424 * Returns the raw bytes of the parcel. 425 * 426 * <p class="note">The data you retrieve here <strong>must not</strong> 427 * be placed in any kind of persistent storage (on local disk, across 428 * a network, etc). For that, you should use standard serialization 429 * or another kind of general serialization mechanism. The Parcel 430 * marshalled representation is highly optimized for local IPC, and as 431 * such does not attempt to maintain compatibility with data created 432 * in different versions of the platform. 433 */ 434 public final byte[] marshall() { 435 return nativeMarshall(mNativePtr); 436 } 437 438 /** 439 * Set the bytes in data to be the raw bytes of this Parcel. 440 */ 441 public final void unmarshall(byte[] data, int offset, int length) { 442 nativeUnmarshall(mNativePtr, data, offset, length); 443 } 444 445 public final void appendFrom(Parcel parcel, int offset, int length) { 446 nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length); 447 } 448 449 /** 450 * Report whether the parcel contains any marshalled file descriptors. 451 */ 452 public final boolean hasFileDescriptors() { 453 return nativeHasFileDescriptors(mNativePtr); 454 } 455 456 /** 457 * Store or read an IBinder interface token in the parcel at the current 458 * {@link #dataPosition}. This is used to validate that the marshalled 459 * transaction is intended for the target interface. 460 */ 461 public final void writeInterfaceToken(String interfaceName) { 462 nativeWriteInterfaceToken(mNativePtr, interfaceName); 463 } 464 465 public final void enforceInterface(String interfaceName) { 466 nativeEnforceInterface(mNativePtr, interfaceName); 467 } 468 469 /** 470 * Write a byte array into the parcel at the current {@link #dataPosition}, 471 * growing {@link #dataCapacity} if needed. 472 * @param b Bytes to place into the parcel. 473 */ 474 public final void writeByteArray(byte[] b) { 475 writeByteArray(b, 0, (b != null) ? b.length : 0); 476 } 477 478 /** 479 * Write a byte array into the parcel at the current {@link #dataPosition}, 480 * growing {@link #dataCapacity} if needed. 481 * @param b Bytes to place into the parcel. 482 * @param offset Index of first byte to be written. 483 * @param len Number of bytes to write. 484 */ 485 public final void writeByteArray(byte[] b, int offset, int len) { 486 if (b == null) { 487 writeInt(-1); 488 return; 489 } 490 Arrays.checkOffsetAndCount(b.length, offset, len); 491 nativeWriteByteArray(mNativePtr, b, offset, len); 492 } 493 494 /** 495 * Write a blob of data into the parcel at the current {@link #dataPosition}, 496 * growing {@link #dataCapacity} if needed. 497 * @param b Bytes to place into the parcel. 498 * {@hide} 499 * {@SystemApi} 500 */ 501 public final void writeBlob(byte[] b) { 502 nativeWriteBlob(mNativePtr, b, 0, (b != null) ? b.length : 0); 503 } 504 505 /** 506 * Write an integer value into the parcel at the current dataPosition(), 507 * growing dataCapacity() if needed. 508 */ 509 public final void writeInt(int val) { 510 nativeWriteInt(mNativePtr, val); 511 } 512 513 /** 514 * Write a long integer value into the parcel at the current dataPosition(), 515 * growing dataCapacity() if needed. 516 */ 517 public final void writeLong(long val) { 518 nativeWriteLong(mNativePtr, val); 519 } 520 521 /** 522 * Write a floating point value into the parcel at the current 523 * dataPosition(), growing dataCapacity() if needed. 524 */ 525 public final void writeFloat(float val) { 526 nativeWriteFloat(mNativePtr, val); 527 } 528 529 /** 530 * Write a double precision floating point value into the parcel at the 531 * current dataPosition(), growing dataCapacity() if needed. 532 */ 533 public final void writeDouble(double val) { 534 nativeWriteDouble(mNativePtr, val); 535 } 536 537 /** 538 * Write a string value into the parcel at the current dataPosition(), 539 * growing dataCapacity() if needed. 540 */ 541 public final void writeString(String val) { 542 nativeWriteString(mNativePtr, val); 543 } 544 545 /** 546 * Write a CharSequence value into the parcel at the current dataPosition(), 547 * growing dataCapacity() if needed. 548 * @hide 549 */ 550 public final void writeCharSequence(CharSequence val) { 551 TextUtils.writeToParcel(val, this, 0); 552 } 553 554 /** 555 * Write an object into the parcel at the current dataPosition(), 556 * growing dataCapacity() if needed. 557 */ 558 public final void writeStrongBinder(IBinder val) { 559 nativeWriteStrongBinder(mNativePtr, val); 560 } 561 562 /** 563 * Write an object into the parcel at the current dataPosition(), 564 * growing dataCapacity() if needed. 565 */ 566 public final void writeStrongInterface(IInterface val) { 567 writeStrongBinder(val == null ? null : val.asBinder()); 568 } 569 570 /** 571 * Write a FileDescriptor into the parcel at the current dataPosition(), 572 * growing dataCapacity() if needed. 573 * 574 * <p class="caution">The file descriptor will not be closed, which may 575 * result in file descriptor leaks when objects are returned from Binder 576 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 577 * accepts contextual flags and will close the original file descriptor 578 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 579 */ 580 public final void writeFileDescriptor(FileDescriptor val) { 581 nativeWriteFileDescriptor(mNativePtr, val); 582 } 583 584 /** 585 * Write a byte value into the parcel at the current dataPosition(), 586 * growing dataCapacity() if needed. 587 */ 588 public final void writeByte(byte val) { 589 writeInt(val); 590 } 591 592 /** 593 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 594 * at the current dataPosition(), 595 * growing dataCapacity() if needed. The Map keys must be String objects. 596 * The Map values are written using {@link #writeValue} and must follow 597 * the specification there. 598 * 599 * <p>It is strongly recommended to use {@link #writeBundle} instead of 600 * this method, since the Bundle class provides a type-safe API that 601 * allows you to avoid mysterious type errors at the point of marshalling. 602 */ 603 public final void writeMap(Map val) { 604 writeMapInternal((Map<String, Object>) val); 605 } 606 607 /** 608 * Flatten a Map into the parcel at the current dataPosition(), 609 * growing dataCapacity() if needed. The Map keys must be String objects. 610 */ 611 /* package */ void writeMapInternal(Map<String,Object> val) { 612 if (val == null) { 613 writeInt(-1); 614 return; 615 } 616 Set<Map.Entry<String,Object>> entries = val.entrySet(); 617 writeInt(entries.size()); 618 for (Map.Entry<String,Object> e : entries) { 619 writeValue(e.getKey()); 620 writeValue(e.getValue()); 621 } 622 } 623 624 /** 625 * Flatten an ArrayMap into the parcel at the current dataPosition(), 626 * growing dataCapacity() if needed. The Map keys must be String objects. 627 */ 628 /* package */ void writeArrayMapInternal(ArrayMap<String, Object> val) { 629 if (val == null) { 630 writeInt(-1); 631 return; 632 } 633 final int N = val.size(); 634 writeInt(N); 635 if (DEBUG_ARRAY_MAP) { 636 RuntimeException here = new RuntimeException("here"); 637 here.fillInStackTrace(); 638 Log.d(TAG, "Writing " + N + " ArrayMap entries", here); 639 } 640 int startPos; 641 for (int i=0; i<N; i++) { 642 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 643 writeString(val.keyAt(i)); 644 writeValue(val.valueAt(i)); 645 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Write #" + i + " " 646 + (dataPosition()-startPos) + " bytes: key=0x" 647 + Integer.toHexString(val.keyAt(i) != null ? val.keyAt(i).hashCode() : 0) 648 + " " + val.keyAt(i)); 649 } 650 } 651 652 /** 653 * @hide For testing only. 654 */ 655 public void writeArrayMap(ArrayMap<String, Object> val) { 656 writeArrayMapInternal(val); 657 } 658 659 /** 660 * Flatten a Bundle into the parcel at the current dataPosition(), 661 * growing dataCapacity() if needed. 662 */ 663 public final void writeBundle(Bundle val) { 664 if (val == null) { 665 writeInt(-1); 666 return; 667 } 668 669 val.writeToParcel(this, 0); 670 } 671 672 /** 673 * Flatten a PersistableBundle into the parcel at the current dataPosition(), 674 * growing dataCapacity() if needed. 675 */ 676 public final void writePersistableBundle(PersistableBundle val) { 677 if (val == null) { 678 writeInt(-1); 679 return; 680 } 681 682 val.writeToParcel(this, 0); 683 } 684 685 /** 686 * Flatten a Size into the parcel at the current dataPosition(), 687 * growing dataCapacity() if needed. 688 */ 689 public final void writeSize(Size val) { 690 writeInt(val.getWidth()); 691 writeInt(val.getHeight()); 692 } 693 694 /** 695 * Flatten a SizeF into the parcel at the current dataPosition(), 696 * growing dataCapacity() if needed. 697 */ 698 public final void writeSizeF(SizeF val) { 699 writeFloat(val.getWidth()); 700 writeFloat(val.getHeight()); 701 } 702 703 /** 704 * Flatten a List into the parcel at the current dataPosition(), growing 705 * dataCapacity() if needed. The List values are written using 706 * {@link #writeValue} and must follow the specification there. 707 */ 708 public final void writeList(List val) { 709 if (val == null) { 710 writeInt(-1); 711 return; 712 } 713 int N = val.size(); 714 int i=0; 715 writeInt(N); 716 while (i < N) { 717 writeValue(val.get(i)); 718 i++; 719 } 720 } 721 722 /** 723 * Flatten an Object array into the parcel at the current dataPosition(), 724 * growing dataCapacity() if needed. The array values are written using 725 * {@link #writeValue} and must follow the specification there. 726 */ 727 public final void writeArray(Object[] val) { 728 if (val == null) { 729 writeInt(-1); 730 return; 731 } 732 int N = val.length; 733 int i=0; 734 writeInt(N); 735 while (i < N) { 736 writeValue(val[i]); 737 i++; 738 } 739 } 740 741 /** 742 * Flatten a generic SparseArray into the parcel at the current 743 * dataPosition(), growing dataCapacity() if needed. The SparseArray 744 * values are written using {@link #writeValue} and must follow the 745 * specification there. 746 */ 747 public final void writeSparseArray(SparseArray<Object> val) { 748 if (val == null) { 749 writeInt(-1); 750 return; 751 } 752 int N = val.size(); 753 writeInt(N); 754 int i=0; 755 while (i < N) { 756 writeInt(val.keyAt(i)); 757 writeValue(val.valueAt(i)); 758 i++; 759 } 760 } 761 762 public final void writeSparseBooleanArray(SparseBooleanArray val) { 763 if (val == null) { 764 writeInt(-1); 765 return; 766 } 767 int N = val.size(); 768 writeInt(N); 769 int i=0; 770 while (i < N) { 771 writeInt(val.keyAt(i)); 772 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 773 i++; 774 } 775 } 776 777 public final void writeBooleanArray(boolean[] val) { 778 if (val != null) { 779 int N = val.length; 780 writeInt(N); 781 for (int i=0; i<N; i++) { 782 writeInt(val[i] ? 1 : 0); 783 } 784 } else { 785 writeInt(-1); 786 } 787 } 788 789 public final boolean[] createBooleanArray() { 790 int N = readInt(); 791 // >>2 as a fast divide-by-4 works in the create*Array() functions 792 // because dataAvail() will never return a negative number. 4 is 793 // the size of a stored boolean in the stream. 794 if (N >= 0 && N <= (dataAvail() >> 2)) { 795 boolean[] val = new boolean[N]; 796 for (int i=0; i<N; i++) { 797 val[i] = readInt() != 0; 798 } 799 return val; 800 } else { 801 return null; 802 } 803 } 804 805 public final void readBooleanArray(boolean[] val) { 806 int N = readInt(); 807 if (N == val.length) { 808 for (int i=0; i<N; i++) { 809 val[i] = readInt() != 0; 810 } 811 } else { 812 throw new RuntimeException("bad array lengths"); 813 } 814 } 815 816 public final void writeCharArray(char[] val) { 817 if (val != null) { 818 int N = val.length; 819 writeInt(N); 820 for (int i=0; i<N; i++) { 821 writeInt((int)val[i]); 822 } 823 } else { 824 writeInt(-1); 825 } 826 } 827 828 public final char[] createCharArray() { 829 int N = readInt(); 830 if (N >= 0 && N <= (dataAvail() >> 2)) { 831 char[] val = new char[N]; 832 for (int i=0; i<N; i++) { 833 val[i] = (char)readInt(); 834 } 835 return val; 836 } else { 837 return null; 838 } 839 } 840 841 public final void readCharArray(char[] val) { 842 int N = readInt(); 843 if (N == val.length) { 844 for (int i=0; i<N; i++) { 845 val[i] = (char)readInt(); 846 } 847 } else { 848 throw new RuntimeException("bad array lengths"); 849 } 850 } 851 852 public final void writeIntArray(int[] val) { 853 if (val != null) { 854 int N = val.length; 855 writeInt(N); 856 for (int i=0; i<N; i++) { 857 writeInt(val[i]); 858 } 859 } else { 860 writeInt(-1); 861 } 862 } 863 864 public final int[] createIntArray() { 865 int N = readInt(); 866 if (N >= 0 && N <= (dataAvail() >> 2)) { 867 int[] val = new int[N]; 868 for (int i=0; i<N; i++) { 869 val[i] = readInt(); 870 } 871 return val; 872 } else { 873 return null; 874 } 875 } 876 877 public final void readIntArray(int[] val) { 878 int N = readInt(); 879 if (N == val.length) { 880 for (int i=0; i<N; i++) { 881 val[i] = readInt(); 882 } 883 } else { 884 throw new RuntimeException("bad array lengths"); 885 } 886 } 887 888 public final void writeLongArray(long[] val) { 889 if (val != null) { 890 int N = val.length; 891 writeInt(N); 892 for (int i=0; i<N; i++) { 893 writeLong(val[i]); 894 } 895 } else { 896 writeInt(-1); 897 } 898 } 899 900 public final long[] createLongArray() { 901 int N = readInt(); 902 // >>3 because stored longs are 64 bits 903 if (N >= 0 && N <= (dataAvail() >> 3)) { 904 long[] val = new long[N]; 905 for (int i=0; i<N; i++) { 906 val[i] = readLong(); 907 } 908 return val; 909 } else { 910 return null; 911 } 912 } 913 914 public final void readLongArray(long[] val) { 915 int N = readInt(); 916 if (N == val.length) { 917 for (int i=0; i<N; i++) { 918 val[i] = readLong(); 919 } 920 } else { 921 throw new RuntimeException("bad array lengths"); 922 } 923 } 924 925 public final void writeFloatArray(float[] val) { 926 if (val != null) { 927 int N = val.length; 928 writeInt(N); 929 for (int i=0; i<N; i++) { 930 writeFloat(val[i]); 931 } 932 } else { 933 writeInt(-1); 934 } 935 } 936 937 public final float[] createFloatArray() { 938 int N = readInt(); 939 // >>2 because stored floats are 4 bytes 940 if (N >= 0 && N <= (dataAvail() >> 2)) { 941 float[] val = new float[N]; 942 for (int i=0; i<N; i++) { 943 val[i] = readFloat(); 944 } 945 return val; 946 } else { 947 return null; 948 } 949 } 950 951 public final void readFloatArray(float[] val) { 952 int N = readInt(); 953 if (N == val.length) { 954 for (int i=0; i<N; i++) { 955 val[i] = readFloat(); 956 } 957 } else { 958 throw new RuntimeException("bad array lengths"); 959 } 960 } 961 962 public final void writeDoubleArray(double[] val) { 963 if (val != null) { 964 int N = val.length; 965 writeInt(N); 966 for (int i=0; i<N; i++) { 967 writeDouble(val[i]); 968 } 969 } else { 970 writeInt(-1); 971 } 972 } 973 974 public final double[] createDoubleArray() { 975 int N = readInt(); 976 // >>3 because stored doubles are 8 bytes 977 if (N >= 0 && N <= (dataAvail() >> 3)) { 978 double[] val = new double[N]; 979 for (int i=0; i<N; i++) { 980 val[i] = readDouble(); 981 } 982 return val; 983 } else { 984 return null; 985 } 986 } 987 988 public final void readDoubleArray(double[] val) { 989 int N = readInt(); 990 if (N == val.length) { 991 for (int i=0; i<N; i++) { 992 val[i] = readDouble(); 993 } 994 } else { 995 throw new RuntimeException("bad array lengths"); 996 } 997 } 998 999 public final void writeStringArray(String[] val) { 1000 if (val != null) { 1001 int N = val.length; 1002 writeInt(N); 1003 for (int i=0; i<N; i++) { 1004 writeString(val[i]); 1005 } 1006 } else { 1007 writeInt(-1); 1008 } 1009 } 1010 1011 public final String[] createStringArray() { 1012 int N = readInt(); 1013 if (N >= 0) { 1014 String[] val = new String[N]; 1015 for (int i=0; i<N; i++) { 1016 val[i] = readString(); 1017 } 1018 return val; 1019 } else { 1020 return null; 1021 } 1022 } 1023 1024 public final void readStringArray(String[] val) { 1025 int N = readInt(); 1026 if (N == val.length) { 1027 for (int i=0; i<N; i++) { 1028 val[i] = readString(); 1029 } 1030 } else { 1031 throw new RuntimeException("bad array lengths"); 1032 } 1033 } 1034 1035 public final void writeBinderArray(IBinder[] val) { 1036 if (val != null) { 1037 int N = val.length; 1038 writeInt(N); 1039 for (int i=0; i<N; i++) { 1040 writeStrongBinder(val[i]); 1041 } 1042 } else { 1043 writeInt(-1); 1044 } 1045 } 1046 1047 /** 1048 * @hide 1049 */ 1050 public final void writeCharSequenceArray(CharSequence[] val) { 1051 if (val != null) { 1052 int N = val.length; 1053 writeInt(N); 1054 for (int i=0; i<N; i++) { 1055 writeCharSequence(val[i]); 1056 } 1057 } else { 1058 writeInt(-1); 1059 } 1060 } 1061 1062 /** 1063 * @hide 1064 */ 1065 public final void writeCharSequenceList(ArrayList<CharSequence> val) { 1066 if (val != null) { 1067 int N = val.size(); 1068 writeInt(N); 1069 for (int i=0; i<N; i++) { 1070 writeCharSequence(val.get(i)); 1071 } 1072 } else { 1073 writeInt(-1); 1074 } 1075 } 1076 1077 public final IBinder[] createBinderArray() { 1078 int N = readInt(); 1079 if (N >= 0) { 1080 IBinder[] val = new IBinder[N]; 1081 for (int i=0; i<N; i++) { 1082 val[i] = readStrongBinder(); 1083 } 1084 return val; 1085 } else { 1086 return null; 1087 } 1088 } 1089 1090 public final void readBinderArray(IBinder[] val) { 1091 int N = readInt(); 1092 if (N == val.length) { 1093 for (int i=0; i<N; i++) { 1094 val[i] = readStrongBinder(); 1095 } 1096 } else { 1097 throw new RuntimeException("bad array lengths"); 1098 } 1099 } 1100 1101 /** 1102 * Flatten a List containing a particular object type into the parcel, at 1103 * the current dataPosition() and growing dataCapacity() if needed. The 1104 * type of the objects in the list must be one that implements Parcelable. 1105 * Unlike the generic writeList() method, however, only the raw data of the 1106 * objects is written and not their type, so you must use the corresponding 1107 * readTypedList() to unmarshall them. 1108 * 1109 * @param val The list of objects to be written. 1110 * 1111 * @see #createTypedArrayList 1112 * @see #readTypedList 1113 * @see Parcelable 1114 */ 1115 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1116 if (val == null) { 1117 writeInt(-1); 1118 return; 1119 } 1120 int N = val.size(); 1121 int i=0; 1122 writeInt(N); 1123 while (i < N) { 1124 T item = val.get(i); 1125 if (item != null) { 1126 writeInt(1); 1127 item.writeToParcel(this, 0); 1128 } else { 1129 writeInt(0); 1130 } 1131 i++; 1132 } 1133 } 1134 1135 /** 1136 * Flatten a List containing String objects into the parcel, at 1137 * the current dataPosition() and growing dataCapacity() if needed. They 1138 * can later be retrieved with {@link #createStringArrayList} or 1139 * {@link #readStringList}. 1140 * 1141 * @param val The list of strings to be written. 1142 * 1143 * @see #createStringArrayList 1144 * @see #readStringList 1145 */ 1146 public final void writeStringList(List<String> val) { 1147 if (val == null) { 1148 writeInt(-1); 1149 return; 1150 } 1151 int N = val.size(); 1152 int i=0; 1153 writeInt(N); 1154 while (i < N) { 1155 writeString(val.get(i)); 1156 i++; 1157 } 1158 } 1159 1160 /** 1161 * Flatten a List containing IBinder objects into the parcel, at 1162 * the current dataPosition() and growing dataCapacity() if needed. They 1163 * can later be retrieved with {@link #createBinderArrayList} or 1164 * {@link #readBinderList}. 1165 * 1166 * @param val The list of strings to be written. 1167 * 1168 * @see #createBinderArrayList 1169 * @see #readBinderList 1170 */ 1171 public final void writeBinderList(List<IBinder> val) { 1172 if (val == null) { 1173 writeInt(-1); 1174 return; 1175 } 1176 int N = val.size(); 1177 int i=0; 1178 writeInt(N); 1179 while (i < N) { 1180 writeStrongBinder(val.get(i)); 1181 i++; 1182 } 1183 } 1184 1185 /** 1186 * Flatten a heterogeneous array containing a particular object type into 1187 * the parcel, at 1188 * the current dataPosition() and growing dataCapacity() if needed. The 1189 * type of the objects in the array must be one that implements Parcelable. 1190 * Unlike the {@link #writeParcelableArray} method, however, only the 1191 * raw data of the objects is written and not their type, so you must use 1192 * {@link #readTypedArray} with the correct corresponding 1193 * {@link Parcelable.Creator} implementation to unmarshall them. 1194 * 1195 * @param val The array of objects to be written. 1196 * @param parcelableFlags Contextual flags as per 1197 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1198 * 1199 * @see #readTypedArray 1200 * @see #writeParcelableArray 1201 * @see Parcelable.Creator 1202 */ 1203 public final <T extends Parcelable> void writeTypedArray(T[] val, 1204 int parcelableFlags) { 1205 if (val != null) { 1206 int N = val.length; 1207 writeInt(N); 1208 for (int i=0; i<N; i++) { 1209 T item = val[i]; 1210 if (item != null) { 1211 writeInt(1); 1212 item.writeToParcel(this, parcelableFlags); 1213 } else { 1214 writeInt(0); 1215 } 1216 } 1217 } else { 1218 writeInt(-1); 1219 } 1220 } 1221 1222 /** 1223 * Flatten a generic object in to a parcel. The given Object value may 1224 * currently be one of the following types: 1225 * 1226 * <ul> 1227 * <li> null 1228 * <li> String 1229 * <li> Byte 1230 * <li> Short 1231 * <li> Integer 1232 * <li> Long 1233 * <li> Float 1234 * <li> Double 1235 * <li> Boolean 1236 * <li> String[] 1237 * <li> boolean[] 1238 * <li> byte[] 1239 * <li> int[] 1240 * <li> long[] 1241 * <li> Object[] (supporting objects of the same type defined here). 1242 * <li> {@link Bundle} 1243 * <li> Map (as supported by {@link #writeMap}). 1244 * <li> Any object that implements the {@link Parcelable} protocol. 1245 * <li> Parcelable[] 1246 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1247 * <li> List (as supported by {@link #writeList}). 1248 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1249 * <li> {@link IBinder} 1250 * <li> Any object that implements Serializable (but see 1251 * {@link #writeSerializable} for caveats). Note that all of the 1252 * previous types have relatively efficient implementations for 1253 * writing to a Parcel; having to rely on the generic serialization 1254 * approach is much less efficient and should be avoided whenever 1255 * possible. 1256 * </ul> 1257 * 1258 * <p class="caution">{@link Parcelable} objects are written with 1259 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1260 * serializing objects containing {@link ParcelFileDescriptor}s, 1261 * this may result in file descriptor leaks when they are returned from 1262 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1263 * should be used).</p> 1264 */ 1265 public final void writeValue(Object v) { 1266 if (v == null) { 1267 writeInt(VAL_NULL); 1268 } else if (v instanceof String) { 1269 writeInt(VAL_STRING); 1270 writeString((String) v); 1271 } else if (v instanceof Integer) { 1272 writeInt(VAL_INTEGER); 1273 writeInt((Integer) v); 1274 } else if (v instanceof Map) { 1275 writeInt(VAL_MAP); 1276 writeMap((Map) v); 1277 } else if (v instanceof Bundle) { 1278 // Must be before Parcelable 1279 writeInt(VAL_BUNDLE); 1280 writeBundle((Bundle) v); 1281 } else if (v instanceof Parcelable) { 1282 writeInt(VAL_PARCELABLE); 1283 writeParcelable((Parcelable) v, 0); 1284 } else if (v instanceof Short) { 1285 writeInt(VAL_SHORT); 1286 writeInt(((Short) v).intValue()); 1287 } else if (v instanceof Long) { 1288 writeInt(VAL_LONG); 1289 writeLong((Long) v); 1290 } else if (v instanceof Float) { 1291 writeInt(VAL_FLOAT); 1292 writeFloat((Float) v); 1293 } else if (v instanceof Double) { 1294 writeInt(VAL_DOUBLE); 1295 writeDouble((Double) v); 1296 } else if (v instanceof Boolean) { 1297 writeInt(VAL_BOOLEAN); 1298 writeInt((Boolean) v ? 1 : 0); 1299 } else if (v instanceof CharSequence) { 1300 // Must be after String 1301 writeInt(VAL_CHARSEQUENCE); 1302 writeCharSequence((CharSequence) v); 1303 } else if (v instanceof List) { 1304 writeInt(VAL_LIST); 1305 writeList((List) v); 1306 } else if (v instanceof SparseArray) { 1307 writeInt(VAL_SPARSEARRAY); 1308 writeSparseArray((SparseArray) v); 1309 } else if (v instanceof boolean[]) { 1310 writeInt(VAL_BOOLEANARRAY); 1311 writeBooleanArray((boolean[]) v); 1312 } else if (v instanceof byte[]) { 1313 writeInt(VAL_BYTEARRAY); 1314 writeByteArray((byte[]) v); 1315 } else if (v instanceof String[]) { 1316 writeInt(VAL_STRINGARRAY); 1317 writeStringArray((String[]) v); 1318 } else if (v instanceof CharSequence[]) { 1319 // Must be after String[] and before Object[] 1320 writeInt(VAL_CHARSEQUENCEARRAY); 1321 writeCharSequenceArray((CharSequence[]) v); 1322 } else if (v instanceof IBinder) { 1323 writeInt(VAL_IBINDER); 1324 writeStrongBinder((IBinder) v); 1325 } else if (v instanceof Parcelable[]) { 1326 writeInt(VAL_PARCELABLEARRAY); 1327 writeParcelableArray((Parcelable[]) v, 0); 1328 } else if (v instanceof int[]) { 1329 writeInt(VAL_INTARRAY); 1330 writeIntArray((int[]) v); 1331 } else if (v instanceof long[]) { 1332 writeInt(VAL_LONGARRAY); 1333 writeLongArray((long[]) v); 1334 } else if (v instanceof Byte) { 1335 writeInt(VAL_BYTE); 1336 writeInt((Byte) v); 1337 } else if (v instanceof PersistableBundle) { 1338 writeInt(VAL_PERSISTABLEBUNDLE); 1339 writePersistableBundle((PersistableBundle) v); 1340 } else if (v instanceof Size) { 1341 writeInt(VAL_SIZE); 1342 writeSize((Size) v); 1343 } else if (v instanceof SizeF) { 1344 writeInt(VAL_SIZEF); 1345 writeSizeF((SizeF) v); 1346 } else { 1347 Class<?> clazz = v.getClass(); 1348 if (clazz.isArray() && clazz.getComponentType() == Object.class) { 1349 // Only pure Object[] are written here, Other arrays of non-primitive types are 1350 // handled by serialization as this does not record the component type. 1351 writeInt(VAL_OBJECTARRAY); 1352 writeArray((Object[]) v); 1353 } else if (v instanceof Serializable) { 1354 // Must be last 1355 writeInt(VAL_SERIALIZABLE); 1356 writeSerializable((Serializable) v); 1357 } else { 1358 throw new RuntimeException("Parcel: unable to marshal value " + v); 1359 } 1360 } 1361 } 1362 1363 /** 1364 * Flatten the name of the class of the Parcelable and its contents 1365 * into the parcel. 1366 * 1367 * @param p The Parcelable object to be written. 1368 * @param parcelableFlags Contextual flags as per 1369 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1370 */ 1371 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1372 if (p == null) { 1373 writeString(null); 1374 return; 1375 } 1376 String name = p.getClass().getName(); 1377 writeString(name); 1378 p.writeToParcel(this, parcelableFlags); 1379 } 1380 1381 /** @hide */ 1382 public final void writeParcelableCreator(Parcelable p) { 1383 String name = p.getClass().getName(); 1384 writeString(name); 1385 } 1386 1387 /** 1388 * Write a generic serializable object in to a Parcel. It is strongly 1389 * recommended that this method be avoided, since the serialization 1390 * overhead is extremely large, and this approach will be much slower than 1391 * using the other approaches to writing data in to a Parcel. 1392 */ 1393 public final void writeSerializable(Serializable s) { 1394 if (s == null) { 1395 writeString(null); 1396 return; 1397 } 1398 String name = s.getClass().getName(); 1399 writeString(name); 1400 1401 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1402 try { 1403 ObjectOutputStream oos = new ObjectOutputStream(baos); 1404 oos.writeObject(s); 1405 oos.close(); 1406 1407 writeByteArray(baos.toByteArray()); 1408 } catch (IOException ioe) { 1409 throw new RuntimeException("Parcelable encountered " + 1410 "IOException writing serializable object (name = " + name + 1411 ")", ioe); 1412 } 1413 } 1414 1415 /** 1416 * Special function for writing an exception result at the header of 1417 * a parcel, to be used when returning an exception from a transaction. 1418 * Note that this currently only supports a few exception types; any other 1419 * exception will be re-thrown by this function as a RuntimeException 1420 * (to be caught by the system's last-resort exception handling when 1421 * dispatching a transaction). 1422 * 1423 * <p>The supported exception types are: 1424 * <ul> 1425 * <li>{@link BadParcelableException} 1426 * <li>{@link IllegalArgumentException} 1427 * <li>{@link IllegalStateException} 1428 * <li>{@link NullPointerException} 1429 * <li>{@link SecurityException} 1430 * <li>{@link NetworkOnMainThreadException} 1431 * </ul> 1432 * 1433 * @param e The Exception to be written. 1434 * 1435 * @see #writeNoException 1436 * @see #readException 1437 */ 1438 public final void writeException(Exception e) { 1439 int code = 0; 1440 if (e instanceof SecurityException) { 1441 code = EX_SECURITY; 1442 } else if (e instanceof BadParcelableException) { 1443 code = EX_BAD_PARCELABLE; 1444 } else if (e instanceof IllegalArgumentException) { 1445 code = EX_ILLEGAL_ARGUMENT; 1446 } else if (e instanceof NullPointerException) { 1447 code = EX_NULL_POINTER; 1448 } else if (e instanceof IllegalStateException) { 1449 code = EX_ILLEGAL_STATE; 1450 } else if (e instanceof NetworkOnMainThreadException) { 1451 code = EX_NETWORK_MAIN_THREAD; 1452 } else if (e instanceof UnsupportedOperationException) { 1453 code = EX_UNSUPPORTED_OPERATION; 1454 } 1455 writeInt(code); 1456 StrictMode.clearGatheredViolations(); 1457 if (code == 0) { 1458 if (e instanceof RuntimeException) { 1459 throw (RuntimeException) e; 1460 } 1461 throw new RuntimeException(e); 1462 } 1463 writeString(e.getMessage()); 1464 } 1465 1466 /** 1467 * Special function for writing information at the front of the Parcel 1468 * indicating that no exception occurred. 1469 * 1470 * @see #writeException 1471 * @see #readException 1472 */ 1473 public final void writeNoException() { 1474 // Despite the name of this function ("write no exception"), 1475 // it should instead be thought of as "write the RPC response 1476 // header", but because this function name is written out by 1477 // the AIDL compiler, we're not going to rename it. 1478 // 1479 // The response header, in the non-exception case (see also 1480 // writeException above, also called by the AIDL compiler), is 1481 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1482 // StrictMode has gathered up violations that have occurred 1483 // during a Binder call, in which case we write out the number 1484 // of violations and their details, serialized, before the 1485 // actual RPC respons data. The receiving end of this is 1486 // readException(), below. 1487 if (StrictMode.hasGatheredViolations()) { 1488 writeInt(EX_HAS_REPLY_HEADER); 1489 final int sizePosition = dataPosition(); 1490 writeInt(0); // total size of fat header, to be filled in later 1491 StrictMode.writeGatheredViolationsToParcel(this); 1492 final int payloadPosition = dataPosition(); 1493 setDataPosition(sizePosition); 1494 writeInt(payloadPosition - sizePosition); // header size 1495 setDataPosition(payloadPosition); 1496 } else { 1497 writeInt(0); 1498 } 1499 } 1500 1501 /** 1502 * Special function for reading an exception result from the header of 1503 * a parcel, to be used after receiving the result of a transaction. This 1504 * will throw the exception for you if it had been written to the Parcel, 1505 * otherwise return and let you read the normal result data from the Parcel. 1506 * 1507 * @see #writeException 1508 * @see #writeNoException 1509 */ 1510 public final void readException() { 1511 int code = readExceptionCode(); 1512 if (code != 0) { 1513 String msg = readString(); 1514 readException(code, msg); 1515 } 1516 } 1517 1518 /** 1519 * Parses the header of a Binder call's response Parcel and 1520 * returns the exception code. Deals with lite or fat headers. 1521 * In the common successful case, this header is generally zero. 1522 * In less common cases, it's a small negative number and will be 1523 * followed by an error string. 1524 * 1525 * This exists purely for android.database.DatabaseUtils and 1526 * insulating it from having to handle fat headers as returned by 1527 * e.g. StrictMode-induced RPC responses. 1528 * 1529 * @hide 1530 */ 1531 public final int readExceptionCode() { 1532 int code = readInt(); 1533 if (code == EX_HAS_REPLY_HEADER) { 1534 int headerSize = readInt(); 1535 if (headerSize == 0) { 1536 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1537 } else { 1538 // Currently the only thing in the header is StrictMode stacks, 1539 // but discussions around event/RPC tracing suggest we might 1540 // put that here too. If so, switch on sub-header tags here. 1541 // But for now, just parse out the StrictMode stuff. 1542 StrictMode.readAndHandleBinderCallViolations(this); 1543 } 1544 // And fat response headers are currently only used when 1545 // there are no exceptions, so return no error: 1546 return 0; 1547 } 1548 return code; 1549 } 1550 1551 /** 1552 * Throw an exception with the given message. Not intended for use 1553 * outside the Parcel class. 1554 * 1555 * @param code Used to determine which exception class to throw. 1556 * @param msg The exception message. 1557 */ 1558 public final void readException(int code, String msg) { 1559 switch (code) { 1560 case EX_SECURITY: 1561 throw new SecurityException(msg); 1562 case EX_BAD_PARCELABLE: 1563 throw new BadParcelableException(msg); 1564 case EX_ILLEGAL_ARGUMENT: 1565 throw new IllegalArgumentException(msg); 1566 case EX_NULL_POINTER: 1567 throw new NullPointerException(msg); 1568 case EX_ILLEGAL_STATE: 1569 throw new IllegalStateException(msg); 1570 case EX_NETWORK_MAIN_THREAD: 1571 throw new NetworkOnMainThreadException(); 1572 case EX_UNSUPPORTED_OPERATION: 1573 throw new UnsupportedOperationException(msg); 1574 } 1575 throw new RuntimeException("Unknown exception code: " + code 1576 + " msg " + msg); 1577 } 1578 1579 /** 1580 * Read an integer value from the parcel at the current dataPosition(). 1581 */ 1582 public final int readInt() { 1583 return nativeReadInt(mNativePtr); 1584 } 1585 1586 /** 1587 * Read a long integer value from the parcel at the current dataPosition(). 1588 */ 1589 public final long readLong() { 1590 return nativeReadLong(mNativePtr); 1591 } 1592 1593 /** 1594 * Read a floating point value from the parcel at the current 1595 * dataPosition(). 1596 */ 1597 public final float readFloat() { 1598 return nativeReadFloat(mNativePtr); 1599 } 1600 1601 /** 1602 * Read a double precision floating point value from the parcel at the 1603 * current dataPosition(). 1604 */ 1605 public final double readDouble() { 1606 return nativeReadDouble(mNativePtr); 1607 } 1608 1609 /** 1610 * Read a string value from the parcel at the current dataPosition(). 1611 */ 1612 public final String readString() { 1613 return nativeReadString(mNativePtr); 1614 } 1615 1616 /** 1617 * Read a CharSequence value from the parcel at the current dataPosition(). 1618 * @hide 1619 */ 1620 public final CharSequence readCharSequence() { 1621 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1622 } 1623 1624 /** 1625 * Read an object from the parcel at the current dataPosition(). 1626 */ 1627 public final IBinder readStrongBinder() { 1628 return nativeReadStrongBinder(mNativePtr); 1629 } 1630 1631 /** 1632 * Read a FileDescriptor from the parcel at the current dataPosition(). 1633 */ 1634 public final ParcelFileDescriptor readFileDescriptor() { 1635 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1636 return fd != null ? new ParcelFileDescriptor(fd) : null; 1637 } 1638 1639 /** {@hide} */ 1640 public final FileDescriptor readRawFileDescriptor() { 1641 return nativeReadFileDescriptor(mNativePtr); 1642 } 1643 1644 /*package*/ static native FileDescriptor openFileDescriptor(String file, 1645 int mode) throws FileNotFoundException; 1646 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 1647 throws IOException; 1648 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 1649 throws IOException; 1650 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 1651 1652 /** 1653 * Read a byte value from the parcel at the current dataPosition(). 1654 */ 1655 public final byte readByte() { 1656 return (byte)(readInt() & 0xff); 1657 } 1658 1659 /** 1660 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1661 * been written with {@link #writeBundle}. Read into an existing Map object 1662 * from the parcel at the current dataPosition(). 1663 */ 1664 public final void readMap(Map outVal, ClassLoader loader) { 1665 int N = readInt(); 1666 readMapInternal(outVal, N, loader); 1667 } 1668 1669 /** 1670 * Read into an existing List object from the parcel at the current 1671 * dataPosition(), using the given class loader to load any enclosed 1672 * Parcelables. If it is null, the default class loader is used. 1673 */ 1674 public final void readList(List outVal, ClassLoader loader) { 1675 int N = readInt(); 1676 readListInternal(outVal, N, loader); 1677 } 1678 1679 /** 1680 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1681 * been written with {@link #writeBundle}. Read and return a new HashMap 1682 * object from the parcel at the current dataPosition(), using the given 1683 * class loader to load any enclosed Parcelables. Returns null if 1684 * the previously written map object was null. 1685 */ 1686 public final HashMap readHashMap(ClassLoader loader) 1687 { 1688 int N = readInt(); 1689 if (N < 0) { 1690 return null; 1691 } 1692 HashMap m = new HashMap(N); 1693 readMapInternal(m, N, loader); 1694 return m; 1695 } 1696 1697 /** 1698 * Read and return a new Bundle object from the parcel at the current 1699 * dataPosition(). Returns null if the previously written Bundle object was 1700 * null. 1701 */ 1702 public final Bundle readBundle() { 1703 return readBundle(null); 1704 } 1705 1706 /** 1707 * Read and return a new Bundle object from the parcel at the current 1708 * dataPosition(), using the given class loader to initialize the class 1709 * loader of the Bundle for later retrieval of Parcelable objects. 1710 * Returns null if the previously written Bundle object was null. 1711 */ 1712 public final Bundle readBundle(ClassLoader loader) { 1713 int length = readInt(); 1714 if (length < 0) { 1715 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1716 return null; 1717 } 1718 1719 final Bundle bundle = new Bundle(this, length); 1720 if (loader != null) { 1721 bundle.setClassLoader(loader); 1722 } 1723 return bundle; 1724 } 1725 1726 /** 1727 * Read and return a new Bundle object from the parcel at the current 1728 * dataPosition(). Returns null if the previously written Bundle object was 1729 * null. 1730 */ 1731 public final PersistableBundle readPersistableBundle() { 1732 return readPersistableBundle(null); 1733 } 1734 1735 /** 1736 * Read and return a new Bundle object from the parcel at the current 1737 * dataPosition(), using the given class loader to initialize the class 1738 * loader of the Bundle for later retrieval of Parcelable objects. 1739 * Returns null if the previously written Bundle object was null. 1740 */ 1741 public final PersistableBundle readPersistableBundle(ClassLoader loader) { 1742 int length = readInt(); 1743 if (length < 0) { 1744 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1745 return null; 1746 } 1747 1748 final PersistableBundle bundle = new PersistableBundle(this, length); 1749 if (loader != null) { 1750 bundle.setClassLoader(loader); 1751 } 1752 return bundle; 1753 } 1754 1755 /** 1756 * Read a Size from the parcel at the current dataPosition(). 1757 */ 1758 public final Size readSize() { 1759 final int width = readInt(); 1760 final int height = readInt(); 1761 return new Size(width, height); 1762 } 1763 1764 /** 1765 * Read a SizeF from the parcel at the current dataPosition(). 1766 */ 1767 public final SizeF readSizeF() { 1768 final float width = readFloat(); 1769 final float height = readFloat(); 1770 return new SizeF(width, height); 1771 } 1772 1773 /** 1774 * Read and return a byte[] object from the parcel. 1775 */ 1776 public final byte[] createByteArray() { 1777 return nativeCreateByteArray(mNativePtr); 1778 } 1779 1780 /** 1781 * Read a byte[] object from the parcel and copy it into the 1782 * given byte array. 1783 */ 1784 public final void readByteArray(byte[] val) { 1785 // TODO: make this a native method to avoid the extra copy. 1786 byte[] ba = createByteArray(); 1787 if (ba.length == val.length) { 1788 System.arraycopy(ba, 0, val, 0, ba.length); 1789 } else { 1790 throw new RuntimeException("bad array lengths"); 1791 } 1792 } 1793 1794 /** 1795 * Read a blob of data from the parcel and return it as a byte array. 1796 * {@hide} 1797 * {@SystemApi} 1798 */ 1799 public final byte[] readBlob() { 1800 return nativeReadBlob(mNativePtr); 1801 } 1802 1803 /** 1804 * Read and return a String[] object from the parcel. 1805 * {@hide} 1806 */ 1807 public final String[] readStringArray() { 1808 String[] array = null; 1809 1810 int length = readInt(); 1811 if (length >= 0) 1812 { 1813 array = new String[length]; 1814 1815 for (int i = 0 ; i < length ; i++) 1816 { 1817 array[i] = readString(); 1818 } 1819 } 1820 1821 return array; 1822 } 1823 1824 /** 1825 * Read and return a CharSequence[] object from the parcel. 1826 * {@hide} 1827 */ 1828 public final CharSequence[] readCharSequenceArray() { 1829 CharSequence[] array = null; 1830 1831 int length = readInt(); 1832 if (length >= 0) 1833 { 1834 array = new CharSequence[length]; 1835 1836 for (int i = 0 ; i < length ; i++) 1837 { 1838 array[i] = readCharSequence(); 1839 } 1840 } 1841 1842 return array; 1843 } 1844 1845 /** 1846 * Read and return an ArrayList<CharSequence> object from the parcel. 1847 * {@hide} 1848 */ 1849 public final ArrayList<CharSequence> readCharSequenceList() { 1850 ArrayList<CharSequence> array = null; 1851 1852 int length = readInt(); 1853 if (length >= 0) { 1854 array = new ArrayList<CharSequence>(length); 1855 1856 for (int i = 0 ; i < length ; i++) { 1857 array.add(readCharSequence()); 1858 } 1859 } 1860 1861 return array; 1862 } 1863 1864 /** 1865 * Read and return a new ArrayList object from the parcel at the current 1866 * dataPosition(). Returns null if the previously written list object was 1867 * null. The given class loader will be used to load any enclosed 1868 * Parcelables. 1869 */ 1870 public final ArrayList readArrayList(ClassLoader loader) { 1871 int N = readInt(); 1872 if (N < 0) { 1873 return null; 1874 } 1875 ArrayList l = new ArrayList(N); 1876 readListInternal(l, N, loader); 1877 return l; 1878 } 1879 1880 /** 1881 * Read and return a new Object array from the parcel at the current 1882 * dataPosition(). Returns null if the previously written array was 1883 * null. The given class loader will be used to load any enclosed 1884 * Parcelables. 1885 */ 1886 public final Object[] readArray(ClassLoader loader) { 1887 int N = readInt(); 1888 if (N < 0) { 1889 return null; 1890 } 1891 Object[] l = new Object[N]; 1892 readArrayInternal(l, N, loader); 1893 return l; 1894 } 1895 1896 /** 1897 * Read and return a new SparseArray object from the parcel at the current 1898 * dataPosition(). Returns null if the previously written list object was 1899 * null. The given class loader will be used to load any enclosed 1900 * Parcelables. 1901 */ 1902 public final SparseArray readSparseArray(ClassLoader loader) { 1903 int N = readInt(); 1904 if (N < 0) { 1905 return null; 1906 } 1907 SparseArray sa = new SparseArray(N); 1908 readSparseArrayInternal(sa, N, loader); 1909 return sa; 1910 } 1911 1912 /** 1913 * Read and return a new SparseBooleanArray object from the parcel at the current 1914 * dataPosition(). Returns null if the previously written list object was 1915 * null. 1916 */ 1917 public final SparseBooleanArray readSparseBooleanArray() { 1918 int N = readInt(); 1919 if (N < 0) { 1920 return null; 1921 } 1922 SparseBooleanArray sa = new SparseBooleanArray(N); 1923 readSparseBooleanArrayInternal(sa, N); 1924 return sa; 1925 } 1926 1927 /** 1928 * Read and return a new ArrayList containing a particular object type from 1929 * the parcel that was written with {@link #writeTypedList} at the 1930 * current dataPosition(). Returns null if the 1931 * previously written list object was null. The list <em>must</em> have 1932 * previously been written via {@link #writeTypedList} with the same object 1933 * type. 1934 * 1935 * @return A newly created ArrayList containing objects with the same data 1936 * as those that were previously written. 1937 * 1938 * @see #writeTypedList 1939 */ 1940 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 1941 int N = readInt(); 1942 if (N < 0) { 1943 return null; 1944 } 1945 ArrayList<T> l = new ArrayList<T>(N); 1946 while (N > 0) { 1947 if (readInt() != 0) { 1948 l.add(c.createFromParcel(this)); 1949 } else { 1950 l.add(null); 1951 } 1952 N--; 1953 } 1954 return l; 1955 } 1956 1957 /** 1958 * Read into the given List items containing a particular object type 1959 * that were written with {@link #writeTypedList} at the 1960 * current dataPosition(). The list <em>must</em> have 1961 * previously been written via {@link #writeTypedList} with the same object 1962 * type. 1963 * 1964 * @return A newly created ArrayList containing objects with the same data 1965 * as those that were previously written. 1966 * 1967 * @see #writeTypedList 1968 */ 1969 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 1970 int M = list.size(); 1971 int N = readInt(); 1972 int i = 0; 1973 for (; i < M && i < N; i++) { 1974 if (readInt() != 0) { 1975 list.set(i, c.createFromParcel(this)); 1976 } else { 1977 list.set(i, null); 1978 } 1979 } 1980 for (; i<N; i++) { 1981 if (readInt() != 0) { 1982 list.add(c.createFromParcel(this)); 1983 } else { 1984 list.add(null); 1985 } 1986 } 1987 for (; i<M; i++) { 1988 list.remove(N); 1989 } 1990 } 1991 1992 /** 1993 * Read and return a new ArrayList containing String objects from 1994 * the parcel that was written with {@link #writeStringList} at the 1995 * current dataPosition(). Returns null if the 1996 * previously written list object was null. 1997 * 1998 * @return A newly created ArrayList containing strings with the same data 1999 * as those that were previously written. 2000 * 2001 * @see #writeStringList 2002 */ 2003 public final ArrayList<String> createStringArrayList() { 2004 int N = readInt(); 2005 if (N < 0) { 2006 return null; 2007 } 2008 ArrayList<String> l = new ArrayList<String>(N); 2009 while (N > 0) { 2010 l.add(readString()); 2011 N--; 2012 } 2013 return l; 2014 } 2015 2016 /** 2017 * Read and return a new ArrayList containing IBinder objects from 2018 * the parcel that was written with {@link #writeBinderList} at the 2019 * current dataPosition(). Returns null if the 2020 * previously written list object was null. 2021 * 2022 * @return A newly created ArrayList containing strings with the same data 2023 * as those that were previously written. 2024 * 2025 * @see #writeBinderList 2026 */ 2027 public final ArrayList<IBinder> createBinderArrayList() { 2028 int N = readInt(); 2029 if (N < 0) { 2030 return null; 2031 } 2032 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 2033 while (N > 0) { 2034 l.add(readStrongBinder()); 2035 N--; 2036 } 2037 return l; 2038 } 2039 2040 /** 2041 * Read into the given List items String objects that were written with 2042 * {@link #writeStringList} at the current dataPosition(). 2043 * 2044 * @return A newly created ArrayList containing strings with the same data 2045 * as those that were previously written. 2046 * 2047 * @see #writeStringList 2048 */ 2049 public final void readStringList(List<String> list) { 2050 int M = list.size(); 2051 int N = readInt(); 2052 int i = 0; 2053 for (; i < M && i < N; i++) { 2054 list.set(i, readString()); 2055 } 2056 for (; i<N; i++) { 2057 list.add(readString()); 2058 } 2059 for (; i<M; i++) { 2060 list.remove(N); 2061 } 2062 } 2063 2064 /** 2065 * Read into the given List items IBinder objects that were written with 2066 * {@link #writeBinderList} at the current dataPosition(). 2067 * 2068 * @return A newly created ArrayList containing strings with the same data 2069 * as those that were previously written. 2070 * 2071 * @see #writeBinderList 2072 */ 2073 public final void readBinderList(List<IBinder> list) { 2074 int M = list.size(); 2075 int N = readInt(); 2076 int i = 0; 2077 for (; i < M && i < N; i++) { 2078 list.set(i, readStrongBinder()); 2079 } 2080 for (; i<N; i++) { 2081 list.add(readStrongBinder()); 2082 } 2083 for (; i<M; i++) { 2084 list.remove(N); 2085 } 2086 } 2087 2088 /** 2089 * Read and return a new array containing a particular object type from 2090 * the parcel at the current dataPosition(). Returns null if the 2091 * previously written array was null. The array <em>must</em> have 2092 * previously been written via {@link #writeTypedArray} with the same 2093 * object type. 2094 * 2095 * @return A newly created array containing objects with the same data 2096 * as those that were previously written. 2097 * 2098 * @see #writeTypedArray 2099 */ 2100 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 2101 int N = readInt(); 2102 if (N < 0) { 2103 return null; 2104 } 2105 T[] l = c.newArray(N); 2106 for (int i=0; i<N; i++) { 2107 if (readInt() != 0) { 2108 l[i] = c.createFromParcel(this); 2109 } 2110 } 2111 return l; 2112 } 2113 2114 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 2115 int N = readInt(); 2116 if (N == val.length) { 2117 for (int i=0; i<N; i++) { 2118 if (readInt() != 0) { 2119 val[i] = c.createFromParcel(this); 2120 } else { 2121 val[i] = null; 2122 } 2123 } 2124 } else { 2125 throw new RuntimeException("bad array lengths"); 2126 } 2127 } 2128 2129 /** 2130 * @deprecated 2131 * @hide 2132 */ 2133 @Deprecated 2134 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 2135 return createTypedArray(c); 2136 } 2137 2138 /** 2139 * Write a heterogeneous array of Parcelable objects into the Parcel. 2140 * Each object in the array is written along with its class name, so 2141 * that the correct class can later be instantiated. As a result, this 2142 * has significantly more overhead than {@link #writeTypedArray}, but will 2143 * correctly handle an array containing more than one type of object. 2144 * 2145 * @param value The array of objects to be written. 2146 * @param parcelableFlags Contextual flags as per 2147 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 2148 * 2149 * @see #writeTypedArray 2150 */ 2151 public final <T extends Parcelable> void writeParcelableArray(T[] value, 2152 int parcelableFlags) { 2153 if (value != null) { 2154 int N = value.length; 2155 writeInt(N); 2156 for (int i=0; i<N; i++) { 2157 writeParcelable(value[i], parcelableFlags); 2158 } 2159 } else { 2160 writeInt(-1); 2161 } 2162 } 2163 2164 /** 2165 * Read a typed object from a parcel. The given class loader will be 2166 * used to load any enclosed Parcelables. If it is null, the default class 2167 * loader will be used. 2168 */ 2169 public final Object readValue(ClassLoader loader) { 2170 int type = readInt(); 2171 2172 switch (type) { 2173 case VAL_NULL: 2174 return null; 2175 2176 case VAL_STRING: 2177 return readString(); 2178 2179 case VAL_INTEGER: 2180 return readInt(); 2181 2182 case VAL_MAP: 2183 return readHashMap(loader); 2184 2185 case VAL_PARCELABLE: 2186 return readParcelable(loader); 2187 2188 case VAL_SHORT: 2189 return (short) readInt(); 2190 2191 case VAL_LONG: 2192 return readLong(); 2193 2194 case VAL_FLOAT: 2195 return readFloat(); 2196 2197 case VAL_DOUBLE: 2198 return readDouble(); 2199 2200 case VAL_BOOLEAN: 2201 return readInt() == 1; 2202 2203 case VAL_CHARSEQUENCE: 2204 return readCharSequence(); 2205 2206 case VAL_LIST: 2207 return readArrayList(loader); 2208 2209 case VAL_BOOLEANARRAY: 2210 return createBooleanArray(); 2211 2212 case VAL_BYTEARRAY: 2213 return createByteArray(); 2214 2215 case VAL_STRINGARRAY: 2216 return readStringArray(); 2217 2218 case VAL_CHARSEQUENCEARRAY: 2219 return readCharSequenceArray(); 2220 2221 case VAL_IBINDER: 2222 return readStrongBinder(); 2223 2224 case VAL_OBJECTARRAY: 2225 return readArray(loader); 2226 2227 case VAL_INTARRAY: 2228 return createIntArray(); 2229 2230 case VAL_LONGARRAY: 2231 return createLongArray(); 2232 2233 case VAL_BYTE: 2234 return readByte(); 2235 2236 case VAL_SERIALIZABLE: 2237 return readSerializable(loader); 2238 2239 case VAL_PARCELABLEARRAY: 2240 return readParcelableArray(loader); 2241 2242 case VAL_SPARSEARRAY: 2243 return readSparseArray(loader); 2244 2245 case VAL_SPARSEBOOLEANARRAY: 2246 return readSparseBooleanArray(); 2247 2248 case VAL_BUNDLE: 2249 return readBundle(loader); // loading will be deferred 2250 2251 case VAL_PERSISTABLEBUNDLE: 2252 return readPersistableBundle(loader); 2253 2254 case VAL_SIZE: 2255 return readSize(); 2256 2257 case VAL_SIZEF: 2258 return readSizeF(); 2259 2260 default: 2261 int off = dataPosition() - 4; 2262 throw new RuntimeException( 2263 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2264 } 2265 } 2266 2267 /** 2268 * Read and return a new Parcelable from the parcel. The given class loader 2269 * will be used to load any enclosed Parcelables. If it is null, the default 2270 * class loader will be used. 2271 * @param loader A ClassLoader from which to instantiate the Parcelable 2272 * object, or null for the default class loader. 2273 * @return Returns the newly created Parcelable, or null if a null 2274 * object has been written. 2275 * @throws BadParcelableException Throws BadParcelableException if there 2276 * was an error trying to instantiate the Parcelable. 2277 */ 2278 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2279 Parcelable.Creator<T> creator = readParcelableCreator(loader); 2280 if (creator == null) { 2281 return null; 2282 } 2283 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2284 return ((Parcelable.ClassLoaderCreator<T>)creator).createFromParcel(this, loader); 2285 } 2286 return creator.createFromParcel(this); 2287 } 2288 2289 /** @hide */ 2290 public final <T extends Parcelable> T readCreator(Parcelable.Creator<T> creator, 2291 ClassLoader loader) { 2292 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2293 return ((Parcelable.ClassLoaderCreator<T>)creator).createFromParcel(this, loader); 2294 } 2295 return creator.createFromParcel(this); 2296 } 2297 2298 /** @hide */ 2299 public final <T extends Parcelable> Parcelable.Creator<T> readParcelableCreator( 2300 ClassLoader loader) { 2301 String name = readString(); 2302 if (name == null) { 2303 return null; 2304 } 2305 Parcelable.Creator<T> creator; 2306 synchronized (mCreators) { 2307 HashMap<String,Parcelable.Creator> map = mCreators.get(loader); 2308 if (map == null) { 2309 map = new HashMap<String,Parcelable.Creator>(); 2310 mCreators.put(loader, map); 2311 } 2312 creator = map.get(name); 2313 if (creator == null) { 2314 try { 2315 Class c = loader == null ? 2316 Class.forName(name) : Class.forName(name, true, loader); 2317 Field f = c.getField("CREATOR"); 2318 creator = (Parcelable.Creator)f.get(null); 2319 } 2320 catch (IllegalAccessException e) { 2321 Log.e(TAG, "Illegal access when unmarshalling: " 2322 + name, e); 2323 throw new BadParcelableException( 2324 "IllegalAccessException when unmarshalling: " + name); 2325 } 2326 catch (ClassNotFoundException e) { 2327 Log.e(TAG, "Class not found when unmarshalling: " 2328 + name, e); 2329 throw new BadParcelableException( 2330 "ClassNotFoundException when unmarshalling: " + name); 2331 } 2332 catch (ClassCastException e) { 2333 throw new BadParcelableException("Parcelable protocol requires a " 2334 + "Parcelable.Creator object called " 2335 + " CREATOR on class " + name); 2336 } 2337 catch (NoSuchFieldException e) { 2338 throw new BadParcelableException("Parcelable protocol requires a " 2339 + "Parcelable.Creator object called " 2340 + " CREATOR on class " + name); 2341 } 2342 catch (NullPointerException e) { 2343 throw new BadParcelableException("Parcelable protocol requires " 2344 + "the CREATOR object to be static on class " + name); 2345 } 2346 if (creator == null) { 2347 throw new BadParcelableException("Parcelable protocol requires a " 2348 + "Parcelable.Creator object called " 2349 + " CREATOR on class " + name); 2350 } 2351 2352 map.put(name, creator); 2353 } 2354 } 2355 2356 return creator; 2357 } 2358 2359 /** 2360 * Read and return a new Parcelable array from the parcel. 2361 * The given class loader will be used to load any enclosed 2362 * Parcelables. 2363 * @return the Parcelable array, or null if the array is null 2364 */ 2365 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2366 int N = readInt(); 2367 if (N < 0) { 2368 return null; 2369 } 2370 Parcelable[] p = new Parcelable[N]; 2371 for (int i = 0; i < N; i++) { 2372 p[i] = (Parcelable) readParcelable(loader); 2373 } 2374 return p; 2375 } 2376 2377 /** 2378 * Read and return a new Serializable object from the parcel. 2379 * @return the Serializable object, or null if the Serializable name 2380 * wasn't found in the parcel. 2381 */ 2382 public final Serializable readSerializable() { 2383 return readSerializable(null); 2384 } 2385 2386 private final Serializable readSerializable(final ClassLoader loader) { 2387 String name = readString(); 2388 if (name == null) { 2389 // For some reason we were unable to read the name of the Serializable (either there 2390 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2391 // return null, which indicates that the name wasn't found in the parcel. 2392 return null; 2393 } 2394 2395 byte[] serializedData = createByteArray(); 2396 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2397 try { 2398 ObjectInputStream ois = new ObjectInputStream(bais) { 2399 @Override 2400 protected Class<?> resolveClass(ObjectStreamClass osClass) 2401 throws IOException, ClassNotFoundException { 2402 // try the custom classloader if provided 2403 if (loader != null) { 2404 Class<?> c = Class.forName(osClass.getName(), false, loader); 2405 if (c != null) { 2406 return c; 2407 } 2408 } 2409 return super.resolveClass(osClass); 2410 } 2411 }; 2412 return (Serializable) ois.readObject(); 2413 } catch (IOException ioe) { 2414 throw new RuntimeException("Parcelable encountered " + 2415 "IOException reading a Serializable object (name = " + name + 2416 ")", ioe); 2417 } catch (ClassNotFoundException cnfe) { 2418 throw new RuntimeException("Parcelable encountered " + 2419 "ClassNotFoundException reading a Serializable object (name = " 2420 + name + ")", cnfe); 2421 } 2422 } 2423 2424 // Cache of previously looked up CREATOR.createFromParcel() methods for 2425 // particular classes. Keys are the names of the classes, values are 2426 // Method objects. 2427 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator>> 2428 mCreators = new HashMap<ClassLoader,HashMap<String,Parcelable.Creator>>(); 2429 2430 /** @hide for internal use only. */ 2431 static protected final Parcel obtain(int obj) { 2432 throw new UnsupportedOperationException(); 2433 } 2434 2435 /** @hide */ 2436 static protected final Parcel obtain(long obj) { 2437 final Parcel[] pool = sHolderPool; 2438 synchronized (pool) { 2439 Parcel p; 2440 for (int i=0; i<POOL_SIZE; i++) { 2441 p = pool[i]; 2442 if (p != null) { 2443 pool[i] = null; 2444 if (DEBUG_RECYCLE) { 2445 p.mStack = new RuntimeException(); 2446 } 2447 p.init(obj); 2448 return p; 2449 } 2450 } 2451 } 2452 return new Parcel(obj); 2453 } 2454 2455 private Parcel(long nativePtr) { 2456 if (DEBUG_RECYCLE) { 2457 mStack = new RuntimeException(); 2458 } 2459 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2460 init(nativePtr); 2461 } 2462 2463 private void init(long nativePtr) { 2464 if (nativePtr != 0) { 2465 mNativePtr = nativePtr; 2466 mOwnsNativeParcelObject = false; 2467 } else { 2468 mNativePtr = nativeCreate(); 2469 mOwnsNativeParcelObject = true; 2470 } 2471 } 2472 2473 private void freeBuffer() { 2474 if (mOwnsNativeParcelObject) { 2475 nativeFreeBuffer(mNativePtr); 2476 } 2477 } 2478 2479 private void destroy() { 2480 if (mNativePtr != 0) { 2481 if (mOwnsNativeParcelObject) { 2482 nativeDestroy(mNativePtr); 2483 } 2484 mNativePtr = 0; 2485 } 2486 } 2487 2488 @Override 2489 protected void finalize() throws Throwable { 2490 if (DEBUG_RECYCLE) { 2491 if (mStack != null) { 2492 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2493 } 2494 } 2495 destroy(); 2496 } 2497 2498 /* package */ void readMapInternal(Map outVal, int N, 2499 ClassLoader loader) { 2500 while (N > 0) { 2501 Object key = readValue(loader); 2502 Object value = readValue(loader); 2503 outVal.put(key, value); 2504 N--; 2505 } 2506 } 2507 2508 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2509 ClassLoader loader) { 2510 if (DEBUG_ARRAY_MAP) { 2511 RuntimeException here = new RuntimeException("here"); 2512 here.fillInStackTrace(); 2513 Log.d(TAG, "Reading " + N + " ArrayMap entries", here); 2514 } 2515 int startPos; 2516 while (N > 0) { 2517 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 2518 String key = readString(); 2519 Object value = readValue(loader); 2520 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read #" + (N-1) + " " 2521 + (dataPosition()-startPos) + " bytes: key=0x" 2522 + Integer.toHexString((key != null ? key.hashCode() : 0)) + " " + key); 2523 outVal.append(key, value); 2524 N--; 2525 } 2526 outVal.validate(); 2527 } 2528 2529 /* package */ void readArrayMapSafelyInternal(ArrayMap outVal, int N, 2530 ClassLoader loader) { 2531 if (DEBUG_ARRAY_MAP) { 2532 RuntimeException here = new RuntimeException("here"); 2533 here.fillInStackTrace(); 2534 Log.d(TAG, "Reading safely " + N + " ArrayMap entries", here); 2535 } 2536 while (N > 0) { 2537 String key = readString(); 2538 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read safe #" + (N-1) + ": key=0x" 2539 + (key != null ? key.hashCode() : 0) + " " + key); 2540 Object value = readValue(loader); 2541 outVal.put(key, value); 2542 N--; 2543 } 2544 } 2545 2546 /** 2547 * @hide For testing only. 2548 */ 2549 public void readArrayMap(ArrayMap outVal, ClassLoader loader) { 2550 final int N = readInt(); 2551 if (N < 0) { 2552 return; 2553 } 2554 readArrayMapInternal(outVal, N, loader); 2555 } 2556 2557 private void readListInternal(List outVal, int N, 2558 ClassLoader loader) { 2559 while (N > 0) { 2560 Object value = readValue(loader); 2561 //Log.d(TAG, "Unmarshalling value=" + value); 2562 outVal.add(value); 2563 N--; 2564 } 2565 } 2566 2567 private void readArrayInternal(Object[] outVal, int N, 2568 ClassLoader loader) { 2569 for (int i = 0; i < N; i++) { 2570 Object value = readValue(loader); 2571 //Log.d(TAG, "Unmarshalling value=" + value); 2572 outVal[i] = value; 2573 } 2574 } 2575 2576 private void readSparseArrayInternal(SparseArray outVal, int N, 2577 ClassLoader loader) { 2578 while (N > 0) { 2579 int key = readInt(); 2580 Object value = readValue(loader); 2581 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2582 outVal.append(key, value); 2583 N--; 2584 } 2585 } 2586 2587 2588 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 2589 while (N > 0) { 2590 int key = readInt(); 2591 boolean value = this.readByte() == 1; 2592 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2593 outVal.append(key, value); 2594 N--; 2595 } 2596 } 2597} 2598