Parcel.java revision 39c12fab49075b715c253c68c84b5c10c3150197
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.SparseArray; 23import android.util.SparseBooleanArray; 24 25import java.io.ByteArrayInputStream; 26import java.io.ByteArrayOutputStream; 27import java.io.FileDescriptor; 28import java.io.FileNotFoundException; 29import java.io.IOException; 30import java.io.ObjectInputStream; 31import java.io.ObjectOutputStream; 32import java.io.ObjectStreamClass; 33import java.io.Serializable; 34import java.lang.reflect.Field; 35import java.util.ArrayList; 36import java.util.Arrays; 37import java.util.HashMap; 38import java.util.List; 39import java.util.Map; 40import java.util.Set; 41 42/** 43 * Container for a message (data and object references) that can 44 * be sent through an IBinder. A Parcel can contain both flattened data 45 * that will be unflattened on the other side of the IPC (using the various 46 * methods here for writing specific types, or the general 47 * {@link Parcelable} interface), and references to live {@link IBinder} 48 * objects that will result in the other side receiving a proxy IBinder 49 * connected with the original IBinder in the Parcel. 50 * 51 * <p class="note">Parcel is <strong>not</strong> a general-purpose 52 * serialization mechanism. This class (and the corresponding 53 * {@link Parcelable} API for placing arbitrary objects into a Parcel) is 54 * designed as a high-performance IPC transport. As such, it is not 55 * appropriate to place any Parcel data in to persistent storage: changes 56 * in the underlying implementation of any of the data in the Parcel can 57 * render older data unreadable.</p> 58 * 59 * <p>The bulk of the Parcel API revolves around reading and writing data 60 * of various types. There are six major classes of such functions available.</p> 61 * 62 * <h3>Primitives</h3> 63 * 64 * <p>The most basic data functions are for writing and reading primitive 65 * data types: {@link #writeByte}, {@link #readByte}, {@link #writeDouble}, 66 * {@link #readDouble}, {@link #writeFloat}, {@link #readFloat}, {@link #writeInt}, 67 * {@link #readInt}, {@link #writeLong}, {@link #readLong}, 68 * {@link #writeString}, {@link #readString}. Most other 69 * data operations are built on top of these. The given data is written and 70 * read using the endianess of the host CPU.</p> 71 * 72 * <h3>Primitive Arrays</h3> 73 * 74 * <p>There are a variety of methods for reading and writing raw arrays 75 * of primitive objects, which generally result in writing a 4-byte length 76 * followed by the primitive data items. The methods for reading can either 77 * read the data into an existing array, or create and return a new array. 78 * These available types are:</p> 79 * 80 * <ul> 81 * <li> {@link #writeBooleanArray(boolean[])}, 82 * {@link #readBooleanArray(boolean[])}, {@link #createBooleanArray()} 83 * <li> {@link #writeByteArray(byte[])}, 84 * {@link #writeByteArray(byte[], int, int)}, {@link #readByteArray(byte[])}, 85 * {@link #createByteArray()} 86 * <li> {@link #writeCharArray(char[])}, {@link #readCharArray(char[])}, 87 * {@link #createCharArray()} 88 * <li> {@link #writeDoubleArray(double[])}, {@link #readDoubleArray(double[])}, 89 * {@link #createDoubleArray()} 90 * <li> {@link #writeFloatArray(float[])}, {@link #readFloatArray(float[])}, 91 * {@link #createFloatArray()} 92 * <li> {@link #writeIntArray(int[])}, {@link #readIntArray(int[])}, 93 * {@link #createIntArray()} 94 * <li> {@link #writeLongArray(long[])}, {@link #readLongArray(long[])}, 95 * {@link #createLongArray()} 96 * <li> {@link #writeStringArray(String[])}, {@link #readStringArray(String[])}, 97 * {@link #createStringArray()}. 98 * <li> {@link #writeSparseBooleanArray(SparseBooleanArray)}, 99 * {@link #readSparseBooleanArray()}. 100 * </ul> 101 * 102 * <h3>Parcelables</h3> 103 * 104 * <p>The {@link Parcelable} protocol provides an extremely efficient (but 105 * low-level) protocol for objects to write and read themselves from Parcels. 106 * You can use the direct methods {@link #writeParcelable(Parcelable, int)} 107 * and {@link #readParcelable(ClassLoader)} or 108 * {@link #writeParcelableArray} and 109 * {@link #readParcelableArray(ClassLoader)} to write or read. These 110 * methods write both the class type and its data to the Parcel, allowing 111 * that class to be reconstructed from the appropriate class loader when 112 * later reading.</p> 113 * 114 * <p>There are also some methods that provide a more efficient way to work 115 * with Parcelables: {@link #writeTypedArray}, 116 * {@link #writeTypedList(List)}, 117 * {@link #readTypedArray} and {@link #readTypedList}. These methods 118 * do not write the class information of the original object: instead, the 119 * caller of the read function must know what type to expect and pass in the 120 * appropriate {@link Parcelable.Creator Parcelable.Creator} instead to 121 * properly construct the new object and read its data. (To more efficient 122 * write and read a single Parceable object, you can directly call 123 * {@link Parcelable#writeToParcel Parcelable.writeToParcel} and 124 * {@link Parcelable.Creator#createFromParcel Parcelable.Creator.createFromParcel} 125 * yourself.)</p> 126 * 127 * <h3>Bundles</h3> 128 * 129 * <p>A special type-safe container, called {@link Bundle}, is available 130 * for key/value maps of heterogeneous values. This has many optimizations 131 * for improved performance when reading and writing data, and its type-safe 132 * API avoids difficult to debug type errors when finally marshalling the 133 * data contents into a Parcel. The methods to use are 134 * {@link #writeBundle(Bundle)}, {@link #readBundle()}, and 135 * {@link #readBundle(ClassLoader)}. 136 * 137 * <h3>Active Objects</h3> 138 * 139 * <p>An unusual feature of Parcel is the ability to read and write active 140 * objects. For these objects the actual contents of the object is not 141 * written, rather a special token referencing the object is written. When 142 * reading the object back from the Parcel, you do not get a new instance of 143 * the object, but rather a handle that operates on the exact same object that 144 * was originally written. There are two forms of active objects available.</p> 145 * 146 * <p>{@link Binder} objects are a core facility of Android's general cross-process 147 * communication system. The {@link IBinder} interface describes an abstract 148 * protocol with a Binder object. Any such interface can be written in to 149 * a Parcel, and upon reading you will receive either the original object 150 * implementing that interface or a special proxy implementation 151 * that communicates calls back to the original object. The methods to use are 152 * {@link #writeStrongBinder(IBinder)}, 153 * {@link #writeStrongInterface(IInterface)}, {@link #readStrongBinder()}, 154 * {@link #writeBinderArray(IBinder[])}, {@link #readBinderArray(IBinder[])}, 155 * {@link #createBinderArray()}, 156 * {@link #writeBinderList(List)}, {@link #readBinderList(List)}, 157 * {@link #createBinderArrayList()}.</p> 158 * 159 * <p>FileDescriptor objects, representing raw Linux file descriptor identifiers, 160 * can be written and {@link ParcelFileDescriptor} objects returned to operate 161 * on the original file descriptor. The returned file descriptor is a dup 162 * of the original file descriptor: the object and fd is different, but 163 * operating on the same underlying file stream, with the same position, etc. 164 * The methods to use are {@link #writeFileDescriptor(FileDescriptor)}, 165 * {@link #readFileDescriptor()}. 166 * 167 * <h3>Untyped Containers</h3> 168 * 169 * <p>A final class of methods are for writing and reading standard Java 170 * containers of arbitrary types. These all revolve around the 171 * {@link #writeValue(Object)} and {@link #readValue(ClassLoader)} methods 172 * which define the types of objects allowed. The container methods are 173 * {@link #writeArray(Object[])}, {@link #readArray(ClassLoader)}, 174 * {@link #writeList(List)}, {@link #readList(List, ClassLoader)}, 175 * {@link #readArrayList(ClassLoader)}, 176 * {@link #writeMap(Map)}, {@link #readMap(Map, ClassLoader)}, 177 * {@link #writeSparseArray(SparseArray)}, 178 * {@link #readSparseArray(ClassLoader)}. 179 */ 180public final class Parcel { 181 private static final boolean DEBUG_RECYCLE = false; 182 private static final boolean DEBUG_ARRAY_MAP = false; 183 private static final String TAG = "Parcel"; 184 185 @SuppressWarnings({"UnusedDeclaration"}) 186 private long mNativePtr; // used by native code 187 188 /** 189 * Flag indicating if {@link #mNativePtr} was allocated by this object, 190 * indicating that we're responsible for its lifecycle. 191 */ 192 private boolean mOwnsNativeParcelObject; 193 194 private RuntimeException mStack; 195 196 private static final int POOL_SIZE = 6; 197 private static final Parcel[] sOwnedPool = new Parcel[POOL_SIZE]; 198 private static final Parcel[] sHolderPool = new Parcel[POOL_SIZE]; 199 200 private static final int VAL_NULL = -1; 201 private static final int VAL_STRING = 0; 202 private static final int VAL_INTEGER = 1; 203 private static final int VAL_MAP = 2; 204 private static final int VAL_BUNDLE = 3; 205 private static final int VAL_PARCELABLE = 4; 206 private static final int VAL_SHORT = 5; 207 private static final int VAL_LONG = 6; 208 private static final int VAL_FLOAT = 7; 209 private static final int VAL_DOUBLE = 8; 210 private static final int VAL_BOOLEAN = 9; 211 private static final int VAL_CHARSEQUENCE = 10; 212 private static final int VAL_LIST = 11; 213 private static final int VAL_SPARSEARRAY = 12; 214 private static final int VAL_BYTEARRAY = 13; 215 private static final int VAL_STRINGARRAY = 14; 216 private static final int VAL_IBINDER = 15; 217 private static final int VAL_PARCELABLEARRAY = 16; 218 private static final int VAL_OBJECTARRAY = 17; 219 private static final int VAL_INTARRAY = 18; 220 private static final int VAL_LONGARRAY = 19; 221 private static final int VAL_BYTE = 20; 222 private static final int VAL_SERIALIZABLE = 21; 223 private static final int VAL_SPARSEBOOLEANARRAY = 22; 224 private static final int VAL_BOOLEANARRAY = 23; 225 private static final int VAL_CHARSEQUENCEARRAY = 24; 226 private static final int VAL_PERSISTABLEBUNDLE = 25; 227 228 // The initial int32 in a Binder call's reply Parcel header: 229 private static final int EX_SECURITY = -1; 230 private static final int EX_BAD_PARCELABLE = -2; 231 private static final int EX_ILLEGAL_ARGUMENT = -3; 232 private static final int EX_NULL_POINTER = -4; 233 private static final int EX_ILLEGAL_STATE = -5; 234 private static final int EX_NETWORK_MAIN_THREAD = -6; 235 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 236 237 private static native int nativeDataSize(long nativePtr); 238 private static native int nativeDataAvail(long nativePtr); 239 private static native int nativeDataPosition(long nativePtr); 240 private static native int nativeDataCapacity(long nativePtr); 241 private static native void nativeSetDataSize(long nativePtr, int size); 242 private static native void nativeSetDataPosition(long nativePtr, int pos); 243 private static native void nativeSetDataCapacity(long nativePtr, int size); 244 245 private static native boolean nativePushAllowFds(long nativePtr, boolean allowFds); 246 private static native void nativeRestoreAllowFds(long nativePtr, boolean lastValue); 247 248 private static native void nativeWriteByteArray(long nativePtr, byte[] b, int offset, int len); 249 private static native void nativeWriteBlob(long nativePtr, byte[] b, int offset, int len); 250 private static native void nativeWriteInt(long nativePtr, int val); 251 private static native void nativeWriteLong(long nativePtr, long val); 252 private static native void nativeWriteFloat(long nativePtr, float val); 253 private static native void nativeWriteDouble(long nativePtr, double val); 254 private static native void nativeWriteString(long nativePtr, String val); 255 private static native void nativeWriteStrongBinder(long nativePtr, IBinder val); 256 private static native void nativeWriteFileDescriptor(long nativePtr, FileDescriptor val); 257 258 private static native byte[] nativeCreateByteArray(long nativePtr); 259 private static native byte[] nativeReadBlob(long nativePtr); 260 private static native int nativeReadInt(long nativePtr); 261 private static native long nativeReadLong(long nativePtr); 262 private static native float nativeReadFloat(long nativePtr); 263 private static native double nativeReadDouble(long nativePtr); 264 private static native String nativeReadString(long nativePtr); 265 private static native IBinder nativeReadStrongBinder(long nativePtr); 266 private static native FileDescriptor nativeReadFileDescriptor(long nativePtr); 267 268 private static native long nativeCreate(); 269 private static native void nativeFreeBuffer(long nativePtr); 270 private static native void nativeDestroy(long nativePtr); 271 272 private static native byte[] nativeMarshall(long nativePtr); 273 private static native void nativeUnmarshall( 274 long nativePtr, byte[] data, int offest, int length); 275 private static native void nativeAppendFrom( 276 long thisNativePtr, long otherNativePtr, int offset, int length); 277 private static native boolean nativeHasFileDescriptors(long nativePtr); 278 private static native void nativeWriteInterfaceToken(long nativePtr, String interfaceName); 279 private static native void nativeEnforceInterface(long nativePtr, String interfaceName); 280 281 public final static Parcelable.Creator<String> STRING_CREATOR 282 = new Parcelable.Creator<String>() { 283 public String createFromParcel(Parcel source) { 284 return source.readString(); 285 } 286 public String[] newArray(int size) { 287 return new String[size]; 288 } 289 }; 290 291 /** 292 * Retrieve a new Parcel object from the pool. 293 */ 294 public static Parcel obtain() { 295 final Parcel[] pool = sOwnedPool; 296 synchronized (pool) { 297 Parcel p; 298 for (int i=0; i<POOL_SIZE; i++) { 299 p = pool[i]; 300 if (p != null) { 301 pool[i] = null; 302 if (DEBUG_RECYCLE) { 303 p.mStack = new RuntimeException(); 304 } 305 return p; 306 } 307 } 308 } 309 return new Parcel(0); 310 } 311 312 /** 313 * Put a Parcel object back into the pool. You must not touch 314 * the object after this call. 315 */ 316 public final void recycle() { 317 if (DEBUG_RECYCLE) mStack = null; 318 freeBuffer(); 319 320 final Parcel[] pool; 321 if (mOwnsNativeParcelObject) { 322 pool = sOwnedPool; 323 } else { 324 mNativePtr = 0; 325 pool = sHolderPool; 326 } 327 328 synchronized (pool) { 329 for (int i=0; i<POOL_SIZE; i++) { 330 if (pool[i] == null) { 331 pool[i] = this; 332 return; 333 } 334 } 335 } 336 } 337 338 /** 339 * Returns the total amount of data contained in the parcel. 340 */ 341 public final int dataSize() { 342 return nativeDataSize(mNativePtr); 343 } 344 345 /** 346 * Returns the amount of data remaining to be read from the 347 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 348 */ 349 public final int dataAvail() { 350 return nativeDataAvail(mNativePtr); 351 } 352 353 /** 354 * Returns the current position in the parcel data. Never 355 * more than {@link #dataSize}. 356 */ 357 public final int dataPosition() { 358 return nativeDataPosition(mNativePtr); 359 } 360 361 /** 362 * Returns the total amount of space in the parcel. This is always 363 * >= {@link #dataSize}. The difference between it and dataSize() is the 364 * amount of room left until the parcel needs to re-allocate its 365 * data buffer. 366 */ 367 public final int dataCapacity() { 368 return nativeDataCapacity(mNativePtr); 369 } 370 371 /** 372 * Change the amount of data in the parcel. Can be either smaller or 373 * larger than the current size. If larger than the current capacity, 374 * more memory will be allocated. 375 * 376 * @param size The new number of bytes in the Parcel. 377 */ 378 public final void setDataSize(int size) { 379 nativeSetDataSize(mNativePtr, size); 380 } 381 382 /** 383 * Move the current read/write position in the parcel. 384 * @param pos New offset in the parcel; must be between 0 and 385 * {@link #dataSize}. 386 */ 387 public final void setDataPosition(int pos) { 388 nativeSetDataPosition(mNativePtr, pos); 389 } 390 391 /** 392 * Change the capacity (current available space) of the parcel. 393 * 394 * @param size The new capacity of the parcel, in bytes. Can not be 395 * less than {@link #dataSize} -- that is, you can not drop existing data 396 * with this method. 397 */ 398 public final void setDataCapacity(int size) { 399 nativeSetDataCapacity(mNativePtr, size); 400 } 401 402 /** @hide */ 403 public final boolean pushAllowFds(boolean allowFds) { 404 return nativePushAllowFds(mNativePtr, allowFds); 405 } 406 407 /** @hide */ 408 public final void restoreAllowFds(boolean lastValue) { 409 nativeRestoreAllowFds(mNativePtr, lastValue); 410 } 411 412 /** 413 * Returns the raw bytes of the parcel. 414 * 415 * <p class="note">The data you retrieve here <strong>must not</strong> 416 * be placed in any kind of persistent storage (on local disk, across 417 * a network, etc). For that, you should use standard serialization 418 * or another kind of general serialization mechanism. The Parcel 419 * marshalled representation is highly optimized for local IPC, and as 420 * such does not attempt to maintain compatibility with data created 421 * in different versions of the platform. 422 */ 423 public final byte[] marshall() { 424 return nativeMarshall(mNativePtr); 425 } 426 427 /** 428 * Set the bytes in data to be the raw bytes of this Parcel. 429 */ 430 public final void unmarshall(byte[] data, int offest, int length) { 431 nativeUnmarshall(mNativePtr, data, offest, length); 432 } 433 434 public final void appendFrom(Parcel parcel, int offset, int length) { 435 nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length); 436 } 437 438 /** 439 * Report whether the parcel contains any marshalled file descriptors. 440 */ 441 public final boolean hasFileDescriptors() { 442 return nativeHasFileDescriptors(mNativePtr); 443 } 444 445 /** 446 * Store or read an IBinder interface token in the parcel at the current 447 * {@link #dataPosition}. This is used to validate that the marshalled 448 * transaction is intended for the target interface. 449 */ 450 public final void writeInterfaceToken(String interfaceName) { 451 nativeWriteInterfaceToken(mNativePtr, interfaceName); 452 } 453 454 public final void enforceInterface(String interfaceName) { 455 nativeEnforceInterface(mNativePtr, interfaceName); 456 } 457 458 /** 459 * Write a byte array into the parcel at the current {@link #dataPosition}, 460 * growing {@link #dataCapacity} if needed. 461 * @param b Bytes to place into the parcel. 462 */ 463 public final void writeByteArray(byte[] b) { 464 writeByteArray(b, 0, (b != null) ? b.length : 0); 465 } 466 467 /** 468 * Write a byte array into the parcel at the current {@link #dataPosition}, 469 * growing {@link #dataCapacity} if needed. 470 * @param b Bytes to place into the parcel. 471 * @param offset Index of first byte to be written. 472 * @param len Number of bytes to write. 473 */ 474 public final void writeByteArray(byte[] b, int offset, int len) { 475 if (b == null) { 476 writeInt(-1); 477 return; 478 } 479 Arrays.checkOffsetAndCount(b.length, offset, len); 480 nativeWriteByteArray(mNativePtr, b, offset, len); 481 } 482 483 /** 484 * Write a blob of data into the parcel at the current {@link #dataPosition}, 485 * growing {@link #dataCapacity} if needed. 486 * @param b Bytes to place into the parcel. 487 * {@hide} 488 * {@SystemApi} 489 */ 490 public final void writeBlob(byte[] b) { 491 nativeWriteBlob(mNativePtr, b, 0, (b != null) ? b.length : 0); 492 } 493 494 /** 495 * Write an integer value into the parcel at the current dataPosition(), 496 * growing dataCapacity() if needed. 497 */ 498 public final void writeInt(int val) { 499 nativeWriteInt(mNativePtr, val); 500 } 501 502 /** 503 * Write a long integer value into the parcel at the current dataPosition(), 504 * growing dataCapacity() if needed. 505 */ 506 public final void writeLong(long val) { 507 nativeWriteLong(mNativePtr, val); 508 } 509 510 /** 511 * Write a floating point value into the parcel at the current 512 * dataPosition(), growing dataCapacity() if needed. 513 */ 514 public final void writeFloat(float val) { 515 nativeWriteFloat(mNativePtr, val); 516 } 517 518 /** 519 * Write a double precision floating point value into the parcel at the 520 * current dataPosition(), growing dataCapacity() if needed. 521 */ 522 public final void writeDouble(double val) { 523 nativeWriteDouble(mNativePtr, val); 524 } 525 526 /** 527 * Write a string value into the parcel at the current dataPosition(), 528 * growing dataCapacity() if needed. 529 */ 530 public final void writeString(String val) { 531 nativeWriteString(mNativePtr, val); 532 } 533 534 /** 535 * Write a CharSequence value into the parcel at the current dataPosition(), 536 * growing dataCapacity() if needed. 537 * @hide 538 */ 539 public final void writeCharSequence(CharSequence val) { 540 TextUtils.writeToParcel(val, this, 0); 541 } 542 543 /** 544 * Write an object into the parcel at the current dataPosition(), 545 * growing dataCapacity() if needed. 546 */ 547 public final void writeStrongBinder(IBinder val) { 548 nativeWriteStrongBinder(mNativePtr, val); 549 } 550 551 /** 552 * Write an object into the parcel at the current dataPosition(), 553 * growing dataCapacity() if needed. 554 */ 555 public final void writeStrongInterface(IInterface val) { 556 writeStrongBinder(val == null ? null : val.asBinder()); 557 } 558 559 /** 560 * Write a FileDescriptor into the parcel at the current dataPosition(), 561 * growing dataCapacity() if needed. 562 * 563 * <p class="caution">The file descriptor will not be closed, which may 564 * result in file descriptor leaks when objects are returned from Binder 565 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 566 * accepts contextual flags and will close the original file descriptor 567 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 568 */ 569 public final void writeFileDescriptor(FileDescriptor val) { 570 nativeWriteFileDescriptor(mNativePtr, val); 571 } 572 573 /** 574 * Write a byte value into the parcel at the current dataPosition(), 575 * growing dataCapacity() if needed. 576 */ 577 public final void writeByte(byte val) { 578 writeInt(val); 579 } 580 581 /** 582 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 583 * at the current dataPosition(), 584 * growing dataCapacity() if needed. The Map keys must be String objects. 585 * The Map values are written using {@link #writeValue} and must follow 586 * the specification there. 587 * 588 * <p>It is strongly recommended to use {@link #writeBundle} instead of 589 * this method, since the Bundle class provides a type-safe API that 590 * allows you to avoid mysterious type errors at the point of marshalling. 591 */ 592 public final void writeMap(Map val) { 593 writeMapInternal((Map<String, Object>) val); 594 } 595 596 /** 597 * Flatten a Map into the parcel at the current dataPosition(), 598 * growing dataCapacity() if needed. The Map keys must be String objects. 599 */ 600 /* package */ void writeMapInternal(Map<String,Object> val) { 601 if (val == null) { 602 writeInt(-1); 603 return; 604 } 605 Set<Map.Entry<String,Object>> entries = val.entrySet(); 606 writeInt(entries.size()); 607 for (Map.Entry<String,Object> e : entries) { 608 writeValue(e.getKey()); 609 writeValue(e.getValue()); 610 } 611 } 612 613 /** 614 * Flatten an ArrayMap into the parcel at the current dataPosition(), 615 * growing dataCapacity() if needed. The Map keys must be String objects. 616 */ 617 /* package */ void writeArrayMapInternal(ArrayMap<String,Object> val) { 618 if (val == null) { 619 writeInt(-1); 620 return; 621 } 622 final int N = val.size(); 623 writeInt(N); 624 if (DEBUG_ARRAY_MAP) { 625 RuntimeException here = new RuntimeException("here"); 626 here.fillInStackTrace(); 627 Log.d(TAG, "Writing " + N + " ArrayMap entries", here); 628 } 629 int startPos; 630 for (int i=0; i<N; i++) { 631 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 632 writeValue(val.keyAt(i)); 633 writeValue(val.valueAt(i)); 634 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Write #" + i + " " 635 + (dataPosition()-startPos) + " bytes: key=0x" 636 + Integer.toHexString(val.keyAt(i) != null ? val.keyAt(i).hashCode() : 0) 637 + " " + val.keyAt(i)); 638 } 639 } 640 641 /** 642 * Flatten a Bundle into the parcel at the current dataPosition(), 643 * growing dataCapacity() if needed. 644 */ 645 public final void writeBundle(Bundle val) { 646 if (val == null) { 647 writeInt(-1); 648 return; 649 } 650 651 val.writeToParcel(this, 0); 652 } 653 654 /** 655 * Flatten a PersistableBundle into the parcel at the current dataPosition(), 656 * growing dataCapacity() if needed. 657 */ 658 public final void writePersistableBundle(PersistableBundle val) { 659 if (val == null) { 660 writeInt(-1); 661 return; 662 } 663 664 val.writeToParcel(this, 0); 665 } 666 667 /** 668 * Flatten a List into the parcel at the current dataPosition(), growing 669 * dataCapacity() if needed. The List values are written using 670 * {@link #writeValue} and must follow the specification there. 671 */ 672 public final void writeList(List val) { 673 if (val == null) { 674 writeInt(-1); 675 return; 676 } 677 int N = val.size(); 678 int i=0; 679 writeInt(N); 680 while (i < N) { 681 writeValue(val.get(i)); 682 i++; 683 } 684 } 685 686 /** 687 * Flatten an Object array into the parcel at the current dataPosition(), 688 * growing dataCapacity() if needed. The array values are written using 689 * {@link #writeValue} and must follow the specification there. 690 */ 691 public final void writeArray(Object[] val) { 692 if (val == null) { 693 writeInt(-1); 694 return; 695 } 696 int N = val.length; 697 int i=0; 698 writeInt(N); 699 while (i < N) { 700 writeValue(val[i]); 701 i++; 702 } 703 } 704 705 /** 706 * Flatten a generic SparseArray into the parcel at the current 707 * dataPosition(), growing dataCapacity() if needed. The SparseArray 708 * values are written using {@link #writeValue} and must follow the 709 * specification there. 710 */ 711 public final void writeSparseArray(SparseArray<Object> val) { 712 if (val == null) { 713 writeInt(-1); 714 return; 715 } 716 int N = val.size(); 717 writeInt(N); 718 int i=0; 719 while (i < N) { 720 writeInt(val.keyAt(i)); 721 writeValue(val.valueAt(i)); 722 i++; 723 } 724 } 725 726 public final void writeSparseBooleanArray(SparseBooleanArray val) { 727 if (val == null) { 728 writeInt(-1); 729 return; 730 } 731 int N = val.size(); 732 writeInt(N); 733 int i=0; 734 while (i < N) { 735 writeInt(val.keyAt(i)); 736 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 737 i++; 738 } 739 } 740 741 public final void writeBooleanArray(boolean[] val) { 742 if (val != null) { 743 int N = val.length; 744 writeInt(N); 745 for (int i=0; i<N; i++) { 746 writeInt(val[i] ? 1 : 0); 747 } 748 } else { 749 writeInt(-1); 750 } 751 } 752 753 public final boolean[] createBooleanArray() { 754 int N = readInt(); 755 // >>2 as a fast divide-by-4 works in the create*Array() functions 756 // because dataAvail() will never return a negative number. 4 is 757 // the size of a stored boolean in the stream. 758 if (N >= 0 && N <= (dataAvail() >> 2)) { 759 boolean[] val = new boolean[N]; 760 for (int i=0; i<N; i++) { 761 val[i] = readInt() != 0; 762 } 763 return val; 764 } else { 765 return null; 766 } 767 } 768 769 public final void readBooleanArray(boolean[] val) { 770 int N = readInt(); 771 if (N == val.length) { 772 for (int i=0; i<N; i++) { 773 val[i] = readInt() != 0; 774 } 775 } else { 776 throw new RuntimeException("bad array lengths"); 777 } 778 } 779 780 public final void writeCharArray(char[] val) { 781 if (val != null) { 782 int N = val.length; 783 writeInt(N); 784 for (int i=0; i<N; i++) { 785 writeInt((int)val[i]); 786 } 787 } else { 788 writeInt(-1); 789 } 790 } 791 792 public final char[] createCharArray() { 793 int N = readInt(); 794 if (N >= 0 && N <= (dataAvail() >> 2)) { 795 char[] val = new char[N]; 796 for (int i=0; i<N; i++) { 797 val[i] = (char)readInt(); 798 } 799 return val; 800 } else { 801 return null; 802 } 803 } 804 805 public final void readCharArray(char[] val) { 806 int N = readInt(); 807 if (N == val.length) { 808 for (int i=0; i<N; i++) { 809 val[i] = (char)readInt(); 810 } 811 } else { 812 throw new RuntimeException("bad array lengths"); 813 } 814 } 815 816 public final void writeIntArray(int[] val) { 817 if (val != null) { 818 int N = val.length; 819 writeInt(N); 820 for (int i=0; i<N; i++) { 821 writeInt(val[i]); 822 } 823 } else { 824 writeInt(-1); 825 } 826 } 827 828 public final int[] createIntArray() { 829 int N = readInt(); 830 if (N >= 0 && N <= (dataAvail() >> 2)) { 831 int[] val = new int[N]; 832 for (int i=0; i<N; i++) { 833 val[i] = readInt(); 834 } 835 return val; 836 } else { 837 return null; 838 } 839 } 840 841 public final void readIntArray(int[] val) { 842 int N = readInt(); 843 if (N == val.length) { 844 for (int i=0; i<N; i++) { 845 val[i] = readInt(); 846 } 847 } else { 848 throw new RuntimeException("bad array lengths"); 849 } 850 } 851 852 public final void writeLongArray(long[] val) { 853 if (val != null) { 854 int N = val.length; 855 writeInt(N); 856 for (int i=0; i<N; i++) { 857 writeLong(val[i]); 858 } 859 } else { 860 writeInt(-1); 861 } 862 } 863 864 public final long[] createLongArray() { 865 int N = readInt(); 866 // >>3 because stored longs are 64 bits 867 if (N >= 0 && N <= (dataAvail() >> 3)) { 868 long[] val = new long[N]; 869 for (int i=0; i<N; i++) { 870 val[i] = readLong(); 871 } 872 return val; 873 } else { 874 return null; 875 } 876 } 877 878 public final void readLongArray(long[] val) { 879 int N = readInt(); 880 if (N == val.length) { 881 for (int i=0; i<N; i++) { 882 val[i] = readLong(); 883 } 884 } else { 885 throw new RuntimeException("bad array lengths"); 886 } 887 } 888 889 public final void writeFloatArray(float[] val) { 890 if (val != null) { 891 int N = val.length; 892 writeInt(N); 893 for (int i=0; i<N; i++) { 894 writeFloat(val[i]); 895 } 896 } else { 897 writeInt(-1); 898 } 899 } 900 901 public final float[] createFloatArray() { 902 int N = readInt(); 903 // >>2 because stored floats are 4 bytes 904 if (N >= 0 && N <= (dataAvail() >> 2)) { 905 float[] val = new float[N]; 906 for (int i=0; i<N; i++) { 907 val[i] = readFloat(); 908 } 909 return val; 910 } else { 911 return null; 912 } 913 } 914 915 public final void readFloatArray(float[] val) { 916 int N = readInt(); 917 if (N == val.length) { 918 for (int i=0; i<N; i++) { 919 val[i] = readFloat(); 920 } 921 } else { 922 throw new RuntimeException("bad array lengths"); 923 } 924 } 925 926 public final void writeDoubleArray(double[] val) { 927 if (val != null) { 928 int N = val.length; 929 writeInt(N); 930 for (int i=0; i<N; i++) { 931 writeDouble(val[i]); 932 } 933 } else { 934 writeInt(-1); 935 } 936 } 937 938 public final double[] createDoubleArray() { 939 int N = readInt(); 940 // >>3 because stored doubles are 8 bytes 941 if (N >= 0 && N <= (dataAvail() >> 3)) { 942 double[] val = new double[N]; 943 for (int i=0; i<N; i++) { 944 val[i] = readDouble(); 945 } 946 return val; 947 } else { 948 return null; 949 } 950 } 951 952 public final void readDoubleArray(double[] val) { 953 int N = readInt(); 954 if (N == val.length) { 955 for (int i=0; i<N; i++) { 956 val[i] = readDouble(); 957 } 958 } else { 959 throw new RuntimeException("bad array lengths"); 960 } 961 } 962 963 public final void writeStringArray(String[] val) { 964 if (val != null) { 965 int N = val.length; 966 writeInt(N); 967 for (int i=0; i<N; i++) { 968 writeString(val[i]); 969 } 970 } else { 971 writeInt(-1); 972 } 973 } 974 975 public final String[] createStringArray() { 976 int N = readInt(); 977 if (N >= 0) { 978 String[] val = new String[N]; 979 for (int i=0; i<N; i++) { 980 val[i] = readString(); 981 } 982 return val; 983 } else { 984 return null; 985 } 986 } 987 988 public final void readStringArray(String[] val) { 989 int N = readInt(); 990 if (N == val.length) { 991 for (int i=0; i<N; i++) { 992 val[i] = readString(); 993 } 994 } else { 995 throw new RuntimeException("bad array lengths"); 996 } 997 } 998 999 public final void writeBinderArray(IBinder[] val) { 1000 if (val != null) { 1001 int N = val.length; 1002 writeInt(N); 1003 for (int i=0; i<N; i++) { 1004 writeStrongBinder(val[i]); 1005 } 1006 } else { 1007 writeInt(-1); 1008 } 1009 } 1010 1011 /** 1012 * @hide 1013 */ 1014 public final void writeCharSequenceArray(CharSequence[] val) { 1015 if (val != null) { 1016 int N = val.length; 1017 writeInt(N); 1018 for (int i=0; i<N; i++) { 1019 writeCharSequence(val[i]); 1020 } 1021 } else { 1022 writeInt(-1); 1023 } 1024 } 1025 1026 public final IBinder[] createBinderArray() { 1027 int N = readInt(); 1028 if (N >= 0) { 1029 IBinder[] val = new IBinder[N]; 1030 for (int i=0; i<N; i++) { 1031 val[i] = readStrongBinder(); 1032 } 1033 return val; 1034 } else { 1035 return null; 1036 } 1037 } 1038 1039 public final void readBinderArray(IBinder[] val) { 1040 int N = readInt(); 1041 if (N == val.length) { 1042 for (int i=0; i<N; i++) { 1043 val[i] = readStrongBinder(); 1044 } 1045 } else { 1046 throw new RuntimeException("bad array lengths"); 1047 } 1048 } 1049 1050 /** 1051 * Flatten a List containing a particular object type into the parcel, at 1052 * the current dataPosition() and growing dataCapacity() if needed. The 1053 * type of the objects in the list must be one that implements Parcelable. 1054 * Unlike the generic writeList() method, however, only the raw data of the 1055 * objects is written and not their type, so you must use the corresponding 1056 * readTypedList() to unmarshall them. 1057 * 1058 * @param val The list of objects to be written. 1059 * 1060 * @see #createTypedArrayList 1061 * @see #readTypedList 1062 * @see Parcelable 1063 */ 1064 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1065 if (val == null) { 1066 writeInt(-1); 1067 return; 1068 } 1069 int N = val.size(); 1070 int i=0; 1071 writeInt(N); 1072 while (i < N) { 1073 T item = val.get(i); 1074 if (item != null) { 1075 writeInt(1); 1076 item.writeToParcel(this, 0); 1077 } else { 1078 writeInt(0); 1079 } 1080 i++; 1081 } 1082 } 1083 1084 /** 1085 * Flatten a List containing String objects into the parcel, at 1086 * the current dataPosition() and growing dataCapacity() if needed. They 1087 * can later be retrieved with {@link #createStringArrayList} or 1088 * {@link #readStringList}. 1089 * 1090 * @param val The list of strings to be written. 1091 * 1092 * @see #createStringArrayList 1093 * @see #readStringList 1094 */ 1095 public final void writeStringList(List<String> val) { 1096 if (val == null) { 1097 writeInt(-1); 1098 return; 1099 } 1100 int N = val.size(); 1101 int i=0; 1102 writeInt(N); 1103 while (i < N) { 1104 writeString(val.get(i)); 1105 i++; 1106 } 1107 } 1108 1109 /** 1110 * Flatten a List containing IBinder objects into the parcel, at 1111 * the current dataPosition() and growing dataCapacity() if needed. They 1112 * can later be retrieved with {@link #createBinderArrayList} or 1113 * {@link #readBinderList}. 1114 * 1115 * @param val The list of strings to be written. 1116 * 1117 * @see #createBinderArrayList 1118 * @see #readBinderList 1119 */ 1120 public final void writeBinderList(List<IBinder> val) { 1121 if (val == null) { 1122 writeInt(-1); 1123 return; 1124 } 1125 int N = val.size(); 1126 int i=0; 1127 writeInt(N); 1128 while (i < N) { 1129 writeStrongBinder(val.get(i)); 1130 i++; 1131 } 1132 } 1133 1134 /** 1135 * Flatten a heterogeneous array containing a particular object type into 1136 * the parcel, at 1137 * the current dataPosition() and growing dataCapacity() if needed. The 1138 * type of the objects in the array must be one that implements Parcelable. 1139 * Unlike the {@link #writeParcelableArray} method, however, only the 1140 * raw data of the objects is written and not their type, so you must use 1141 * {@link #readTypedArray} with the correct corresponding 1142 * {@link Parcelable.Creator} implementation to unmarshall them. 1143 * 1144 * @param val The array of objects to be written. 1145 * @param parcelableFlags Contextual flags as per 1146 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1147 * 1148 * @see #readTypedArray 1149 * @see #writeParcelableArray 1150 * @see Parcelable.Creator 1151 */ 1152 public final <T extends Parcelable> void writeTypedArray(T[] val, 1153 int parcelableFlags) { 1154 if (val != null) { 1155 int N = val.length; 1156 writeInt(N); 1157 for (int i=0; i<N; i++) { 1158 T item = val[i]; 1159 if (item != null) { 1160 writeInt(1); 1161 item.writeToParcel(this, parcelableFlags); 1162 } else { 1163 writeInt(0); 1164 } 1165 } 1166 } else { 1167 writeInt(-1); 1168 } 1169 } 1170 1171 /** 1172 * Flatten a generic object in to a parcel. The given Object value may 1173 * currently be one of the following types: 1174 * 1175 * <ul> 1176 * <li> null 1177 * <li> String 1178 * <li> Byte 1179 * <li> Short 1180 * <li> Integer 1181 * <li> Long 1182 * <li> Float 1183 * <li> Double 1184 * <li> Boolean 1185 * <li> String[] 1186 * <li> boolean[] 1187 * <li> byte[] 1188 * <li> int[] 1189 * <li> long[] 1190 * <li> Object[] (supporting objects of the same type defined here). 1191 * <li> {@link Bundle} 1192 * <li> Map (as supported by {@link #writeMap}). 1193 * <li> Any object that implements the {@link Parcelable} protocol. 1194 * <li> Parcelable[] 1195 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1196 * <li> List (as supported by {@link #writeList}). 1197 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1198 * <li> {@link IBinder} 1199 * <li> Any object that implements Serializable (but see 1200 * {@link #writeSerializable} for caveats). Note that all of the 1201 * previous types have relatively efficient implementations for 1202 * writing to a Parcel; having to rely on the generic serialization 1203 * approach is much less efficient and should be avoided whenever 1204 * possible. 1205 * </ul> 1206 * 1207 * <p class="caution">{@link Parcelable} objects are written with 1208 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1209 * serializing objects containing {@link ParcelFileDescriptor}s, 1210 * this may result in file descriptor leaks when they are returned from 1211 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1212 * should be used).</p> 1213 */ 1214 public final void writeValue(Object v) { 1215 if (v == null) { 1216 writeInt(VAL_NULL); 1217 } else if (v instanceof String) { 1218 writeInt(VAL_STRING); 1219 writeString((String) v); 1220 } else if (v instanceof Integer) { 1221 writeInt(VAL_INTEGER); 1222 writeInt((Integer) v); 1223 } else if (v instanceof Map) { 1224 writeInt(VAL_MAP); 1225 writeMap((Map) v); 1226 } else if (v instanceof Bundle) { 1227 // Must be before Parcelable 1228 writeInt(VAL_BUNDLE); 1229 writeBundle((Bundle) v); 1230 } else if (v instanceof Parcelable) { 1231 writeInt(VAL_PARCELABLE); 1232 writeParcelable((Parcelable) v, 0); 1233 } else if (v instanceof Short) { 1234 writeInt(VAL_SHORT); 1235 writeInt(((Short) v).intValue()); 1236 } else if (v instanceof Long) { 1237 writeInt(VAL_LONG); 1238 writeLong((Long) v); 1239 } else if (v instanceof Float) { 1240 writeInt(VAL_FLOAT); 1241 writeFloat((Float) v); 1242 } else if (v instanceof Double) { 1243 writeInt(VAL_DOUBLE); 1244 writeDouble((Double) v); 1245 } else if (v instanceof Boolean) { 1246 writeInt(VAL_BOOLEAN); 1247 writeInt((Boolean) v ? 1 : 0); 1248 } else if (v instanceof CharSequence) { 1249 // Must be after String 1250 writeInt(VAL_CHARSEQUENCE); 1251 writeCharSequence((CharSequence) v); 1252 } else if (v instanceof List) { 1253 writeInt(VAL_LIST); 1254 writeList((List) v); 1255 } else if (v instanceof SparseArray) { 1256 writeInt(VAL_SPARSEARRAY); 1257 writeSparseArray((SparseArray) v); 1258 } else if (v instanceof boolean[]) { 1259 writeInt(VAL_BOOLEANARRAY); 1260 writeBooleanArray((boolean[]) v); 1261 } else if (v instanceof byte[]) { 1262 writeInt(VAL_BYTEARRAY); 1263 writeByteArray((byte[]) v); 1264 } else if (v instanceof String[]) { 1265 writeInt(VAL_STRINGARRAY); 1266 writeStringArray((String[]) v); 1267 } else if (v instanceof CharSequence[]) { 1268 // Must be after String[] and before Object[] 1269 writeInt(VAL_CHARSEQUENCEARRAY); 1270 writeCharSequenceArray((CharSequence[]) v); 1271 } else if (v instanceof IBinder) { 1272 writeInt(VAL_IBINDER); 1273 writeStrongBinder((IBinder) v); 1274 } else if (v instanceof Parcelable[]) { 1275 writeInt(VAL_PARCELABLEARRAY); 1276 writeParcelableArray((Parcelable[]) v, 0); 1277 } else if (v instanceof int[]) { 1278 writeInt(VAL_INTARRAY); 1279 writeIntArray((int[]) v); 1280 } else if (v instanceof long[]) { 1281 writeInt(VAL_LONGARRAY); 1282 writeLongArray((long[]) v); 1283 } else if (v instanceof Byte) { 1284 writeInt(VAL_BYTE); 1285 writeInt((Byte) v); 1286 } else if (v instanceof PersistableBundle) { 1287 writeInt(VAL_PERSISTABLEBUNDLE); 1288 writePersistableBundle((PersistableBundle) v); 1289 } else { 1290 Class<?> clazz = v.getClass(); 1291 if (clazz.isArray() && clazz.getComponentType() == Object.class) { 1292 // Only pure Object[] are written here, Other arrays of non-primitive types are 1293 // handled by serialization as this does not record the component type. 1294 writeInt(VAL_OBJECTARRAY); 1295 writeArray((Object[]) v); 1296 } else if (v instanceof Serializable) { 1297 // Must be last 1298 writeInt(VAL_SERIALIZABLE); 1299 writeSerializable((Serializable) v); 1300 } else { 1301 throw new RuntimeException("Parcel: unable to marshal value " + v); 1302 } 1303 } 1304 } 1305 1306 /** 1307 * Flatten the name of the class of the Parcelable and its contents 1308 * into the parcel. 1309 * 1310 * @param p The Parcelable object to be written. 1311 * @param parcelableFlags Contextual flags as per 1312 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1313 */ 1314 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1315 if (p == null) { 1316 writeString(null); 1317 return; 1318 } 1319 String name = p.getClass().getName(); 1320 writeString(name); 1321 p.writeToParcel(this, parcelableFlags); 1322 } 1323 1324 /** @hide */ 1325 public final void writeParcelableCreator(Parcelable p) { 1326 String name = p.getClass().getName(); 1327 writeString(name); 1328 } 1329 1330 /** 1331 * Write a generic serializable object in to a Parcel. It is strongly 1332 * recommended that this method be avoided, since the serialization 1333 * overhead is extremely large, and this approach will be much slower than 1334 * using the other approaches to writing data in to a Parcel. 1335 */ 1336 public final void writeSerializable(Serializable s) { 1337 if (s == null) { 1338 writeString(null); 1339 return; 1340 } 1341 String name = s.getClass().getName(); 1342 writeString(name); 1343 1344 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1345 try { 1346 ObjectOutputStream oos = new ObjectOutputStream(baos); 1347 oos.writeObject(s); 1348 oos.close(); 1349 1350 writeByteArray(baos.toByteArray()); 1351 } catch (IOException ioe) { 1352 throw new RuntimeException("Parcelable encountered " + 1353 "IOException writing serializable object (name = " + name + 1354 ")", ioe); 1355 } 1356 } 1357 1358 /** 1359 * Special function for writing an exception result at the header of 1360 * a parcel, to be used when returning an exception from a transaction. 1361 * Note that this currently only supports a few exception types; any other 1362 * exception will be re-thrown by this function as a RuntimeException 1363 * (to be caught by the system's last-resort exception handling when 1364 * dispatching a transaction). 1365 * 1366 * <p>The supported exception types are: 1367 * <ul> 1368 * <li>{@link BadParcelableException} 1369 * <li>{@link IllegalArgumentException} 1370 * <li>{@link IllegalStateException} 1371 * <li>{@link NullPointerException} 1372 * <li>{@link SecurityException} 1373 * <li>{@link NetworkOnMainThreadException} 1374 * </ul> 1375 * 1376 * @param e The Exception to be written. 1377 * 1378 * @see #writeNoException 1379 * @see #readException 1380 */ 1381 public final void writeException(Exception e) { 1382 int code = 0; 1383 if (e instanceof SecurityException) { 1384 code = EX_SECURITY; 1385 } else if (e instanceof BadParcelableException) { 1386 code = EX_BAD_PARCELABLE; 1387 } else if (e instanceof IllegalArgumentException) { 1388 code = EX_ILLEGAL_ARGUMENT; 1389 } else if (e instanceof NullPointerException) { 1390 code = EX_NULL_POINTER; 1391 } else if (e instanceof IllegalStateException) { 1392 code = EX_ILLEGAL_STATE; 1393 } else if (e instanceof NetworkOnMainThreadException) { 1394 code = EX_NETWORK_MAIN_THREAD; 1395 } 1396 writeInt(code); 1397 StrictMode.clearGatheredViolations(); 1398 if (code == 0) { 1399 if (e instanceof RuntimeException) { 1400 throw (RuntimeException) e; 1401 } 1402 throw new RuntimeException(e); 1403 } 1404 writeString(e.getMessage()); 1405 } 1406 1407 /** 1408 * Special function for writing information at the front of the Parcel 1409 * indicating that no exception occurred. 1410 * 1411 * @see #writeException 1412 * @see #readException 1413 */ 1414 public final void writeNoException() { 1415 // Despite the name of this function ("write no exception"), 1416 // it should instead be thought of as "write the RPC response 1417 // header", but because this function name is written out by 1418 // the AIDL compiler, we're not going to rename it. 1419 // 1420 // The response header, in the non-exception case (see also 1421 // writeException above, also called by the AIDL compiler), is 1422 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1423 // StrictMode has gathered up violations that have occurred 1424 // during a Binder call, in which case we write out the number 1425 // of violations and their details, serialized, before the 1426 // actual RPC respons data. The receiving end of this is 1427 // readException(), below. 1428 if (StrictMode.hasGatheredViolations()) { 1429 writeInt(EX_HAS_REPLY_HEADER); 1430 final int sizePosition = dataPosition(); 1431 writeInt(0); // total size of fat header, to be filled in later 1432 StrictMode.writeGatheredViolationsToParcel(this); 1433 final int payloadPosition = dataPosition(); 1434 setDataPosition(sizePosition); 1435 writeInt(payloadPosition - sizePosition); // header size 1436 setDataPosition(payloadPosition); 1437 } else { 1438 writeInt(0); 1439 } 1440 } 1441 1442 /** 1443 * Special function for reading an exception result from the header of 1444 * a parcel, to be used after receiving the result of a transaction. This 1445 * will throw the exception for you if it had been written to the Parcel, 1446 * otherwise return and let you read the normal result data from the Parcel. 1447 * 1448 * @see #writeException 1449 * @see #writeNoException 1450 */ 1451 public final void readException() { 1452 int code = readExceptionCode(); 1453 if (code != 0) { 1454 String msg = readString(); 1455 readException(code, msg); 1456 } 1457 } 1458 1459 /** 1460 * Parses the header of a Binder call's response Parcel and 1461 * returns the exception code. Deals with lite or fat headers. 1462 * In the common successful case, this header is generally zero. 1463 * In less common cases, it's a small negative number and will be 1464 * followed by an error string. 1465 * 1466 * This exists purely for android.database.DatabaseUtils and 1467 * insulating it from having to handle fat headers as returned by 1468 * e.g. StrictMode-induced RPC responses. 1469 * 1470 * @hide 1471 */ 1472 public final int readExceptionCode() { 1473 int code = readInt(); 1474 if (code == EX_HAS_REPLY_HEADER) { 1475 int headerSize = readInt(); 1476 if (headerSize == 0) { 1477 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1478 } else { 1479 // Currently the only thing in the header is StrictMode stacks, 1480 // but discussions around event/RPC tracing suggest we might 1481 // put that here too. If so, switch on sub-header tags here. 1482 // But for now, just parse out the StrictMode stuff. 1483 StrictMode.readAndHandleBinderCallViolations(this); 1484 } 1485 // And fat response headers are currently only used when 1486 // there are no exceptions, so return no error: 1487 return 0; 1488 } 1489 return code; 1490 } 1491 1492 /** 1493 * Throw an exception with the given message. Not intended for use 1494 * outside the Parcel class. 1495 * 1496 * @param code Used to determine which exception class to throw. 1497 * @param msg The exception message. 1498 */ 1499 public final void readException(int code, String msg) { 1500 switch (code) { 1501 case EX_SECURITY: 1502 throw new SecurityException(msg); 1503 case EX_BAD_PARCELABLE: 1504 throw new BadParcelableException(msg); 1505 case EX_ILLEGAL_ARGUMENT: 1506 throw new IllegalArgumentException(msg); 1507 case EX_NULL_POINTER: 1508 throw new NullPointerException(msg); 1509 case EX_ILLEGAL_STATE: 1510 throw new IllegalStateException(msg); 1511 case EX_NETWORK_MAIN_THREAD: 1512 throw new NetworkOnMainThreadException(); 1513 } 1514 throw new RuntimeException("Unknown exception code: " + code 1515 + " msg " + msg); 1516 } 1517 1518 /** 1519 * Read an integer value from the parcel at the current dataPosition(). 1520 */ 1521 public final int readInt() { 1522 return nativeReadInt(mNativePtr); 1523 } 1524 1525 /** 1526 * Read a long integer value from the parcel at the current dataPosition(). 1527 */ 1528 public final long readLong() { 1529 return nativeReadLong(mNativePtr); 1530 } 1531 1532 /** 1533 * Read a floating point value from the parcel at the current 1534 * dataPosition(). 1535 */ 1536 public final float readFloat() { 1537 return nativeReadFloat(mNativePtr); 1538 } 1539 1540 /** 1541 * Read a double precision floating point value from the parcel at the 1542 * current dataPosition(). 1543 */ 1544 public final double readDouble() { 1545 return nativeReadDouble(mNativePtr); 1546 } 1547 1548 /** 1549 * Read a string value from the parcel at the current dataPosition(). 1550 */ 1551 public final String readString() { 1552 return nativeReadString(mNativePtr); 1553 } 1554 1555 /** 1556 * Read a CharSequence value from the parcel at the current dataPosition(). 1557 * @hide 1558 */ 1559 public final CharSequence readCharSequence() { 1560 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1561 } 1562 1563 /** 1564 * Read an object from the parcel at the current dataPosition(). 1565 */ 1566 public final IBinder readStrongBinder() { 1567 return nativeReadStrongBinder(mNativePtr); 1568 } 1569 1570 /** 1571 * Read a FileDescriptor from the parcel at the current dataPosition(). 1572 */ 1573 public final ParcelFileDescriptor readFileDescriptor() { 1574 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1575 return fd != null ? new ParcelFileDescriptor(fd) : null; 1576 } 1577 1578 /** {@hide} */ 1579 public final FileDescriptor readRawFileDescriptor() { 1580 return nativeReadFileDescriptor(mNativePtr); 1581 } 1582 1583 /*package*/ static native FileDescriptor openFileDescriptor(String file, 1584 int mode) throws FileNotFoundException; 1585 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 1586 throws IOException; 1587 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 1588 throws IOException; 1589 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 1590 1591 /** 1592 * Read a byte value from the parcel at the current dataPosition(). 1593 */ 1594 public final byte readByte() { 1595 return (byte)(readInt() & 0xff); 1596 } 1597 1598 /** 1599 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1600 * been written with {@link #writeBundle}. Read into an existing Map object 1601 * from the parcel at the current dataPosition(). 1602 */ 1603 public final void readMap(Map outVal, ClassLoader loader) { 1604 int N = readInt(); 1605 readMapInternal(outVal, N, loader); 1606 } 1607 1608 /** 1609 * Read into an existing List object from the parcel at the current 1610 * dataPosition(), using the given class loader to load any enclosed 1611 * Parcelables. If it is null, the default class loader is used. 1612 */ 1613 public final void readList(List outVal, ClassLoader loader) { 1614 int N = readInt(); 1615 readListInternal(outVal, N, loader); 1616 } 1617 1618 /** 1619 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1620 * been written with {@link #writeBundle}. Read and return a new HashMap 1621 * object from the parcel at the current dataPosition(), using the given 1622 * class loader to load any enclosed Parcelables. Returns null if 1623 * the previously written map object was null. 1624 */ 1625 public final HashMap readHashMap(ClassLoader loader) 1626 { 1627 int N = readInt(); 1628 if (N < 0) { 1629 return null; 1630 } 1631 HashMap m = new HashMap(N); 1632 readMapInternal(m, N, loader); 1633 return m; 1634 } 1635 1636 /** 1637 * Read and return a new Bundle object from the parcel at the current 1638 * dataPosition(). Returns null if the previously written Bundle object was 1639 * null. 1640 */ 1641 public final Bundle readBundle() { 1642 return readBundle(null); 1643 } 1644 1645 /** 1646 * Read and return a new Bundle object from the parcel at the current 1647 * dataPosition(), using the given class loader to initialize the class 1648 * loader of the Bundle for later retrieval of Parcelable objects. 1649 * Returns null if the previously written Bundle object was null. 1650 */ 1651 public final Bundle readBundle(ClassLoader loader) { 1652 int length = readInt(); 1653 if (length < 0) { 1654 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1655 return null; 1656 } 1657 1658 final Bundle bundle = new Bundle(this, length); 1659 if (loader != null) { 1660 bundle.setClassLoader(loader); 1661 } 1662 return bundle; 1663 } 1664 1665 /** 1666 * Read and return a new Bundle object from the parcel at the current 1667 * dataPosition(). Returns null if the previously written Bundle object was 1668 * null. 1669 */ 1670 public final PersistableBundle readPersistableBundle() { 1671 return readPersistableBundle(null); 1672 } 1673 1674 /** 1675 * Read and return a new Bundle object from the parcel at the current 1676 * dataPosition(), using the given class loader to initialize the class 1677 * loader of the Bundle for later retrieval of Parcelable objects. 1678 * Returns null if the previously written Bundle object was null. 1679 */ 1680 public final PersistableBundle readPersistableBundle(ClassLoader loader) { 1681 int length = readInt(); 1682 if (length < 0) { 1683 if (Bundle.DEBUG) Log.d(TAG, "null bundle: length=" + length); 1684 return null; 1685 } 1686 1687 final PersistableBundle bundle = new PersistableBundle(this, length); 1688 if (loader != null) { 1689 bundle.setClassLoader(loader); 1690 } 1691 return bundle; 1692 } 1693 1694 /** 1695 * Read and return a byte[] object from the parcel. 1696 */ 1697 public final byte[] createByteArray() { 1698 return nativeCreateByteArray(mNativePtr); 1699 } 1700 1701 /** 1702 * Read a byte[] object from the parcel and copy it into the 1703 * given byte array. 1704 */ 1705 public final void readByteArray(byte[] val) { 1706 // TODO: make this a native method to avoid the extra copy. 1707 byte[] ba = createByteArray(); 1708 if (ba.length == val.length) { 1709 System.arraycopy(ba, 0, val, 0, ba.length); 1710 } else { 1711 throw new RuntimeException("bad array lengths"); 1712 } 1713 } 1714 1715 /** 1716 * Read a blob of data from the parcel and return it as a byte array. 1717 * {@hide} 1718 * {@SystemApi} 1719 */ 1720 public final byte[] readBlob() { 1721 return nativeReadBlob(mNativePtr); 1722 } 1723 1724 /** 1725 * Read and return a String[] object from the parcel. 1726 * {@hide} 1727 */ 1728 public final String[] readStringArray() { 1729 String[] array = null; 1730 1731 int length = readInt(); 1732 if (length >= 0) 1733 { 1734 array = new String[length]; 1735 1736 for (int i = 0 ; i < length ; i++) 1737 { 1738 array[i] = readString(); 1739 } 1740 } 1741 1742 return array; 1743 } 1744 1745 /** 1746 * Read and return a CharSequence[] object from the parcel. 1747 * {@hide} 1748 */ 1749 public final CharSequence[] readCharSequenceArray() { 1750 CharSequence[] array = null; 1751 1752 int length = readInt(); 1753 if (length >= 0) 1754 { 1755 array = new CharSequence[length]; 1756 1757 for (int i = 0 ; i < length ; i++) 1758 { 1759 array[i] = readCharSequence(); 1760 } 1761 } 1762 1763 return array; 1764 } 1765 1766 /** 1767 * Read and return a new ArrayList object from the parcel at the current 1768 * dataPosition(). Returns null if the previously written list object was 1769 * null. The given class loader will be used to load any enclosed 1770 * Parcelables. 1771 */ 1772 public final ArrayList readArrayList(ClassLoader loader) { 1773 int N = readInt(); 1774 if (N < 0) { 1775 return null; 1776 } 1777 ArrayList l = new ArrayList(N); 1778 readListInternal(l, N, loader); 1779 return l; 1780 } 1781 1782 /** 1783 * Read and return a new Object array from the parcel at the current 1784 * dataPosition(). Returns null if the previously written array was 1785 * null. The given class loader will be used to load any enclosed 1786 * Parcelables. 1787 */ 1788 public final Object[] readArray(ClassLoader loader) { 1789 int N = readInt(); 1790 if (N < 0) { 1791 return null; 1792 } 1793 Object[] l = new Object[N]; 1794 readArrayInternal(l, N, loader); 1795 return l; 1796 } 1797 1798 /** 1799 * Read and return a new SparseArray object from the parcel at the current 1800 * dataPosition(). Returns null if the previously written list object was 1801 * null. The given class loader will be used to load any enclosed 1802 * Parcelables. 1803 */ 1804 public final SparseArray readSparseArray(ClassLoader loader) { 1805 int N = readInt(); 1806 if (N < 0) { 1807 return null; 1808 } 1809 SparseArray sa = new SparseArray(N); 1810 readSparseArrayInternal(sa, N, loader); 1811 return sa; 1812 } 1813 1814 /** 1815 * Read and return a new SparseBooleanArray object from the parcel at the current 1816 * dataPosition(). Returns null if the previously written list object was 1817 * null. 1818 */ 1819 public final SparseBooleanArray readSparseBooleanArray() { 1820 int N = readInt(); 1821 if (N < 0) { 1822 return null; 1823 } 1824 SparseBooleanArray sa = new SparseBooleanArray(N); 1825 readSparseBooleanArrayInternal(sa, N); 1826 return sa; 1827 } 1828 1829 /** 1830 * Read and return a new ArrayList containing a particular object type from 1831 * the parcel that was written with {@link #writeTypedList} at the 1832 * current dataPosition(). Returns null if the 1833 * previously written list object was null. The list <em>must</em> have 1834 * previously been written via {@link #writeTypedList} with the same object 1835 * type. 1836 * 1837 * @return A newly created ArrayList containing objects with the same data 1838 * as those that were previously written. 1839 * 1840 * @see #writeTypedList 1841 */ 1842 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 1843 int N = readInt(); 1844 if (N < 0) { 1845 return null; 1846 } 1847 ArrayList<T> l = new ArrayList<T>(N); 1848 while (N > 0) { 1849 if (readInt() != 0) { 1850 l.add(c.createFromParcel(this)); 1851 } else { 1852 l.add(null); 1853 } 1854 N--; 1855 } 1856 return l; 1857 } 1858 1859 /** 1860 * Read into the given List items containing a particular object type 1861 * that were written with {@link #writeTypedList} at the 1862 * current dataPosition(). The list <em>must</em> have 1863 * previously been written via {@link #writeTypedList} with the same object 1864 * type. 1865 * 1866 * @return A newly created ArrayList containing objects with the same data 1867 * as those that were previously written. 1868 * 1869 * @see #writeTypedList 1870 */ 1871 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 1872 int M = list.size(); 1873 int N = readInt(); 1874 int i = 0; 1875 for (; i < M && i < N; i++) { 1876 if (readInt() != 0) { 1877 list.set(i, c.createFromParcel(this)); 1878 } else { 1879 list.set(i, null); 1880 } 1881 } 1882 for (; i<N; i++) { 1883 if (readInt() != 0) { 1884 list.add(c.createFromParcel(this)); 1885 } else { 1886 list.add(null); 1887 } 1888 } 1889 for (; i<M; i++) { 1890 list.remove(N); 1891 } 1892 } 1893 1894 /** 1895 * Read and return a new ArrayList containing String objects from 1896 * the parcel that was written with {@link #writeStringList} at the 1897 * current dataPosition(). Returns null if the 1898 * previously written list object was null. 1899 * 1900 * @return A newly created ArrayList containing strings with the same data 1901 * as those that were previously written. 1902 * 1903 * @see #writeStringList 1904 */ 1905 public final ArrayList<String> createStringArrayList() { 1906 int N = readInt(); 1907 if (N < 0) { 1908 return null; 1909 } 1910 ArrayList<String> l = new ArrayList<String>(N); 1911 while (N > 0) { 1912 l.add(readString()); 1913 N--; 1914 } 1915 return l; 1916 } 1917 1918 /** 1919 * Read and return a new ArrayList containing IBinder objects from 1920 * the parcel that was written with {@link #writeBinderList} at the 1921 * current dataPosition(). Returns null if the 1922 * previously written list object was null. 1923 * 1924 * @return A newly created ArrayList containing strings with the same data 1925 * as those that were previously written. 1926 * 1927 * @see #writeBinderList 1928 */ 1929 public final ArrayList<IBinder> createBinderArrayList() { 1930 int N = readInt(); 1931 if (N < 0) { 1932 return null; 1933 } 1934 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 1935 while (N > 0) { 1936 l.add(readStrongBinder()); 1937 N--; 1938 } 1939 return l; 1940 } 1941 1942 /** 1943 * Read into the given List items String objects that were written with 1944 * {@link #writeStringList} at the current dataPosition(). 1945 * 1946 * @return A newly created ArrayList containing strings with the same data 1947 * as those that were previously written. 1948 * 1949 * @see #writeStringList 1950 */ 1951 public final void readStringList(List<String> list) { 1952 int M = list.size(); 1953 int N = readInt(); 1954 int i = 0; 1955 for (; i < M && i < N; i++) { 1956 list.set(i, readString()); 1957 } 1958 for (; i<N; i++) { 1959 list.add(readString()); 1960 } 1961 for (; i<M; i++) { 1962 list.remove(N); 1963 } 1964 } 1965 1966 /** 1967 * Read into the given List items IBinder objects that were written with 1968 * {@link #writeBinderList} at the current dataPosition(). 1969 * 1970 * @return A newly created ArrayList containing strings with the same data 1971 * as those that were previously written. 1972 * 1973 * @see #writeBinderList 1974 */ 1975 public final void readBinderList(List<IBinder> list) { 1976 int M = list.size(); 1977 int N = readInt(); 1978 int i = 0; 1979 for (; i < M && i < N; i++) { 1980 list.set(i, readStrongBinder()); 1981 } 1982 for (; i<N; i++) { 1983 list.add(readStrongBinder()); 1984 } 1985 for (; i<M; i++) { 1986 list.remove(N); 1987 } 1988 } 1989 1990 /** 1991 * Read and return a new array containing a particular object type from 1992 * the parcel at the current dataPosition(). Returns null if the 1993 * previously written array was null. The array <em>must</em> have 1994 * previously been written via {@link #writeTypedArray} with the same 1995 * object type. 1996 * 1997 * @return A newly created array containing objects with the same data 1998 * as those that were previously written. 1999 * 2000 * @see #writeTypedArray 2001 */ 2002 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 2003 int N = readInt(); 2004 if (N < 0) { 2005 return null; 2006 } 2007 T[] l = c.newArray(N); 2008 for (int i=0; i<N; i++) { 2009 if (readInt() != 0) { 2010 l[i] = c.createFromParcel(this); 2011 } 2012 } 2013 return l; 2014 } 2015 2016 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 2017 int N = readInt(); 2018 if (N == val.length) { 2019 for (int i=0; i<N; i++) { 2020 if (readInt() != 0) { 2021 val[i] = c.createFromParcel(this); 2022 } else { 2023 val[i] = null; 2024 } 2025 } 2026 } else { 2027 throw new RuntimeException("bad array lengths"); 2028 } 2029 } 2030 2031 /** 2032 * @deprecated 2033 * @hide 2034 */ 2035 @Deprecated 2036 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 2037 return createTypedArray(c); 2038 } 2039 2040 /** 2041 * Write a heterogeneous array of Parcelable objects into the Parcel. 2042 * Each object in the array is written along with its class name, so 2043 * that the correct class can later be instantiated. As a result, this 2044 * has significantly more overhead than {@link #writeTypedArray}, but will 2045 * correctly handle an array containing more than one type of object. 2046 * 2047 * @param value The array of objects to be written. 2048 * @param parcelableFlags Contextual flags as per 2049 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 2050 * 2051 * @see #writeTypedArray 2052 */ 2053 public final <T extends Parcelable> void writeParcelableArray(T[] value, 2054 int parcelableFlags) { 2055 if (value != null) { 2056 int N = value.length; 2057 writeInt(N); 2058 for (int i=0; i<N; i++) { 2059 writeParcelable(value[i], parcelableFlags); 2060 } 2061 } else { 2062 writeInt(-1); 2063 } 2064 } 2065 2066 /** 2067 * Read a typed object from a parcel. The given class loader will be 2068 * used to load any enclosed Parcelables. If it is null, the default class 2069 * loader will be used. 2070 */ 2071 public final Object readValue(ClassLoader loader) { 2072 int type = readInt(); 2073 2074 switch (type) { 2075 case VAL_NULL: 2076 return null; 2077 2078 case VAL_STRING: 2079 return readString(); 2080 2081 case VAL_INTEGER: 2082 return readInt(); 2083 2084 case VAL_MAP: 2085 return readHashMap(loader); 2086 2087 case VAL_PARCELABLE: 2088 return readParcelable(loader); 2089 2090 case VAL_SHORT: 2091 return (short) readInt(); 2092 2093 case VAL_LONG: 2094 return readLong(); 2095 2096 case VAL_FLOAT: 2097 return readFloat(); 2098 2099 case VAL_DOUBLE: 2100 return readDouble(); 2101 2102 case VAL_BOOLEAN: 2103 return readInt() == 1; 2104 2105 case VAL_CHARSEQUENCE: 2106 return readCharSequence(); 2107 2108 case VAL_LIST: 2109 return readArrayList(loader); 2110 2111 case VAL_BOOLEANARRAY: 2112 return createBooleanArray(); 2113 2114 case VAL_BYTEARRAY: 2115 return createByteArray(); 2116 2117 case VAL_STRINGARRAY: 2118 return readStringArray(); 2119 2120 case VAL_CHARSEQUENCEARRAY: 2121 return readCharSequenceArray(); 2122 2123 case VAL_IBINDER: 2124 return readStrongBinder(); 2125 2126 case VAL_OBJECTARRAY: 2127 return readArray(loader); 2128 2129 case VAL_INTARRAY: 2130 return createIntArray(); 2131 2132 case VAL_LONGARRAY: 2133 return createLongArray(); 2134 2135 case VAL_BYTE: 2136 return readByte(); 2137 2138 case VAL_SERIALIZABLE: 2139 return readSerializable(loader); 2140 2141 case VAL_PARCELABLEARRAY: 2142 return readParcelableArray(loader); 2143 2144 case VAL_SPARSEARRAY: 2145 return readSparseArray(loader); 2146 2147 case VAL_SPARSEBOOLEANARRAY: 2148 return readSparseBooleanArray(); 2149 2150 case VAL_BUNDLE: 2151 return readBundle(loader); // loading will be deferred 2152 2153 case VAL_PERSISTABLEBUNDLE: 2154 return readPersistableBundle(loader); 2155 2156 default: 2157 int off = dataPosition() - 4; 2158 throw new RuntimeException( 2159 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2160 } 2161 } 2162 2163 /** 2164 * Read and return a new Parcelable from the parcel. The given class loader 2165 * will be used to load any enclosed Parcelables. If it is null, the default 2166 * class loader will be used. 2167 * @param loader A ClassLoader from which to instantiate the Parcelable 2168 * object, or null for the default class loader. 2169 * @return Returns the newly created Parcelable, or null if a null 2170 * object has been written. 2171 * @throws BadParcelableException Throws BadParcelableException if there 2172 * was an error trying to instantiate the Parcelable. 2173 */ 2174 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2175 Parcelable.Creator<T> creator = readParcelableCreator(loader); 2176 if (creator == null) { 2177 return null; 2178 } 2179 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2180 return ((Parcelable.ClassLoaderCreator<T>)creator).createFromParcel(this, loader); 2181 } 2182 return creator.createFromParcel(this); 2183 } 2184 2185 /** @hide */ 2186 public final <T extends Parcelable> T readCreator(Parcelable.Creator<T> creator, 2187 ClassLoader loader) { 2188 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2189 return ((Parcelable.ClassLoaderCreator<T>)creator).createFromParcel(this, loader); 2190 } 2191 return creator.createFromParcel(this); 2192 } 2193 2194 /** @hide */ 2195 public final <T extends Parcelable> Parcelable.Creator<T> readParcelableCreator( 2196 ClassLoader loader) { 2197 String name = readString(); 2198 if (name == null) { 2199 return null; 2200 } 2201 Parcelable.Creator<T> creator; 2202 synchronized (mCreators) { 2203 HashMap<String,Parcelable.Creator> map = mCreators.get(loader); 2204 if (map == null) { 2205 map = new HashMap<String,Parcelable.Creator>(); 2206 mCreators.put(loader, map); 2207 } 2208 creator = map.get(name); 2209 if (creator == null) { 2210 try { 2211 Class c = loader == null ? 2212 Class.forName(name) : Class.forName(name, true, loader); 2213 Field f = c.getField("CREATOR"); 2214 creator = (Parcelable.Creator)f.get(null); 2215 } 2216 catch (IllegalAccessException e) { 2217 Log.e(TAG, "Illegal access when unmarshalling: " 2218 + name, e); 2219 throw new BadParcelableException( 2220 "IllegalAccessException when unmarshalling: " + name); 2221 } 2222 catch (ClassNotFoundException e) { 2223 Log.e(TAG, "Class not found when unmarshalling: " 2224 + name, e); 2225 throw new BadParcelableException( 2226 "ClassNotFoundException when unmarshalling: " + name); 2227 } 2228 catch (ClassCastException e) { 2229 throw new BadParcelableException("Parcelable protocol requires a " 2230 + "Parcelable.Creator object called " 2231 + " CREATOR on class " + name); 2232 } 2233 catch (NoSuchFieldException e) { 2234 throw new BadParcelableException("Parcelable protocol requires a " 2235 + "Parcelable.Creator object called " 2236 + " CREATOR on class " + name); 2237 } 2238 catch (NullPointerException e) { 2239 throw new BadParcelableException("Parcelable protocol requires " 2240 + "the CREATOR object to be static on class " + name); 2241 } 2242 if (creator == null) { 2243 throw new BadParcelableException("Parcelable protocol requires a " 2244 + "Parcelable.Creator object called " 2245 + " CREATOR on class " + name); 2246 } 2247 2248 map.put(name, creator); 2249 } 2250 } 2251 2252 return creator; 2253 } 2254 2255 /** 2256 * Read and return a new Parcelable array from the parcel. 2257 * The given class loader will be used to load any enclosed 2258 * Parcelables. 2259 * @return the Parcelable array, or null if the array is null 2260 */ 2261 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2262 int N = readInt(); 2263 if (N < 0) { 2264 return null; 2265 } 2266 Parcelable[] p = new Parcelable[N]; 2267 for (int i = 0; i < N; i++) { 2268 p[i] = (Parcelable) readParcelable(loader); 2269 } 2270 return p; 2271 } 2272 2273 /** 2274 * Read and return a new Serializable object from the parcel. 2275 * @return the Serializable object, or null if the Serializable name 2276 * wasn't found in the parcel. 2277 */ 2278 public final Serializable readSerializable() { 2279 return readSerializable(null); 2280 } 2281 2282 private final Serializable readSerializable(final ClassLoader loader) { 2283 String name = readString(); 2284 if (name == null) { 2285 // For some reason we were unable to read the name of the Serializable (either there 2286 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2287 // return null, which indicates that the name wasn't found in the parcel. 2288 return null; 2289 } 2290 2291 byte[] serializedData = createByteArray(); 2292 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2293 try { 2294 ObjectInputStream ois = new ObjectInputStream(bais) { 2295 @Override 2296 protected Class<?> resolveClass(ObjectStreamClass osClass) 2297 throws IOException, ClassNotFoundException { 2298 // try the custom classloader if provided 2299 if (loader != null) { 2300 Class<?> c = Class.forName(osClass.getName(), false, loader); 2301 if (c != null) { 2302 return c; 2303 } 2304 } 2305 return super.resolveClass(osClass); 2306 } 2307 }; 2308 return (Serializable) ois.readObject(); 2309 } catch (IOException ioe) { 2310 throw new RuntimeException("Parcelable encountered " + 2311 "IOException reading a Serializable object (name = " + name + 2312 ")", ioe); 2313 } catch (ClassNotFoundException cnfe) { 2314 throw new RuntimeException("Parcelable encountered " + 2315 "ClassNotFoundException reading a Serializable object (name = " 2316 + name + ")", cnfe); 2317 } 2318 } 2319 2320 // Cache of previously looked up CREATOR.createFromParcel() methods for 2321 // particular classes. Keys are the names of the classes, values are 2322 // Method objects. 2323 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator>> 2324 mCreators = new HashMap<ClassLoader,HashMap<String,Parcelable.Creator>>(); 2325 2326 /** @hide for internal use only. */ 2327 static protected final Parcel obtain(int obj) { 2328 throw new UnsupportedOperationException(); 2329 } 2330 2331 /** @hide */ 2332 static protected final Parcel obtain(long obj) { 2333 final Parcel[] pool = sHolderPool; 2334 synchronized (pool) { 2335 Parcel p; 2336 for (int i=0; i<POOL_SIZE; i++) { 2337 p = pool[i]; 2338 if (p != null) { 2339 pool[i] = null; 2340 if (DEBUG_RECYCLE) { 2341 p.mStack = new RuntimeException(); 2342 } 2343 p.init(obj); 2344 return p; 2345 } 2346 } 2347 } 2348 return new Parcel(obj); 2349 } 2350 2351 private Parcel(long nativePtr) { 2352 if (DEBUG_RECYCLE) { 2353 mStack = new RuntimeException(); 2354 } 2355 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2356 init(nativePtr); 2357 } 2358 2359 private void init(long nativePtr) { 2360 if (nativePtr != 0) { 2361 mNativePtr = nativePtr; 2362 mOwnsNativeParcelObject = false; 2363 } else { 2364 mNativePtr = nativeCreate(); 2365 mOwnsNativeParcelObject = true; 2366 } 2367 } 2368 2369 private void freeBuffer() { 2370 if (mOwnsNativeParcelObject) { 2371 nativeFreeBuffer(mNativePtr); 2372 } 2373 } 2374 2375 private void destroy() { 2376 if (mNativePtr != 0) { 2377 if (mOwnsNativeParcelObject) { 2378 nativeDestroy(mNativePtr); 2379 } 2380 mNativePtr = 0; 2381 } 2382 } 2383 2384 @Override 2385 protected void finalize() throws Throwable { 2386 if (DEBUG_RECYCLE) { 2387 if (mStack != null) { 2388 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2389 } 2390 } 2391 destroy(); 2392 } 2393 2394 /* package */ void readMapInternal(Map outVal, int N, 2395 ClassLoader loader) { 2396 while (N > 0) { 2397 Object key = readValue(loader); 2398 Object value = readValue(loader); 2399 outVal.put(key, value); 2400 N--; 2401 } 2402 } 2403 2404 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2405 ClassLoader loader) { 2406 if (DEBUG_ARRAY_MAP) { 2407 RuntimeException here = new RuntimeException("here"); 2408 here.fillInStackTrace(); 2409 Log.d(TAG, "Reading " + N + " ArrayMap entries", here); 2410 } 2411 int startPos; 2412 while (N > 0) { 2413 if (DEBUG_ARRAY_MAP) startPos = dataPosition(); 2414 Object key = readValue(loader); 2415 Object value = readValue(loader); 2416 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read #" + (N-1) + " " 2417 + (dataPosition()-startPos) + " bytes: key=0x" 2418 + Integer.toHexString((key != null ? key.hashCode() : 0)) + " " + key); 2419 outVal.append(key, value); 2420 N--; 2421 } 2422 } 2423 2424 /* package */ void readArrayMapSafelyInternal(ArrayMap outVal, int N, 2425 ClassLoader loader) { 2426 if (DEBUG_ARRAY_MAP) { 2427 RuntimeException here = new RuntimeException("here"); 2428 here.fillInStackTrace(); 2429 Log.d(TAG, "Reading safely " + N + " ArrayMap entries", here); 2430 } 2431 while (N > 0) { 2432 Object key = readValue(loader); 2433 if (DEBUG_ARRAY_MAP) Log.d(TAG, " Read safe #" + (N-1) + ": key=0x" 2434 + (key != null ? key.hashCode() : 0) + " " + key); 2435 Object value = readValue(loader); 2436 outVal.put(key, value); 2437 N--; 2438 } 2439 } 2440 2441 private void readListInternal(List outVal, int N, 2442 ClassLoader loader) { 2443 while (N > 0) { 2444 Object value = readValue(loader); 2445 //Log.d(TAG, "Unmarshalling value=" + value); 2446 outVal.add(value); 2447 N--; 2448 } 2449 } 2450 2451 private void readArrayInternal(Object[] outVal, int N, 2452 ClassLoader loader) { 2453 for (int i = 0; i < N; i++) { 2454 Object value = readValue(loader); 2455 //Log.d(TAG, "Unmarshalling value=" + value); 2456 outVal[i] = value; 2457 } 2458 } 2459 2460 private void readSparseArrayInternal(SparseArray outVal, int N, 2461 ClassLoader loader) { 2462 while (N > 0) { 2463 int key = readInt(); 2464 Object value = readValue(loader); 2465 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2466 outVal.append(key, value); 2467 N--; 2468 } 2469 } 2470 2471 2472 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 2473 while (N > 0) { 2474 int key = readInt(); 2475 boolean value = this.readByte() == 1; 2476 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2477 outVal.append(key, value); 2478 N--; 2479 } 2480 } 2481} 2482