Parcel.java revision da5a3e12f4f8f965c57d6f93c74190f43ea233f3
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.Serializable; 33import java.lang.reflect.Field; 34import java.util.ArrayList; 35import java.util.Arrays; 36import java.util.HashMap; 37import java.util.List; 38import java.util.Map; 39import java.util.Set; 40 41/** 42 * Container for a message (data and object references) that can 43 * be sent through an IBinder. A Parcel can contain both flattened data 44 * that will be unflattened on the other side of the IPC (using the various 45 * methods here for writing specific types, or the general 46 * {@link Parcelable} interface), and references to live {@link IBinder} 47 * objects that will result in the other side receiving a proxy IBinder 48 * connected with the original IBinder in the Parcel. 49 * 50 * <p class="note">Parcel is <strong>not</strong> a general-purpose 51 * serialization mechanism. This class (and the corresponding 52 * {@link Parcelable} API for placing arbitrary objects into a Parcel) is 53 * designed as a high-performance IPC transport. As such, it is not 54 * appropriate to place any Parcel data in to persistent storage: changes 55 * in the underlying implementation of any of the data in the Parcel can 56 * render older data unreadable.</p> 57 * 58 * <p>The bulk of the Parcel API revolves around reading and writing data 59 * of various types. There are six major classes of such functions available.</p> 60 * 61 * <h3>Primitives</h3> 62 * 63 * <p>The most basic data functions are for writing and reading primitive 64 * data types: {@link #writeByte}, {@link #readByte}, {@link #writeDouble}, 65 * {@link #readDouble}, {@link #writeFloat}, {@link #readFloat}, {@link #writeInt}, 66 * {@link #readInt}, {@link #writeLong}, {@link #readLong}, 67 * {@link #writeString}, {@link #readString}. Most other 68 * data operations are built on top of these. The given data is written and 69 * read using the endianess of the host CPU.</p> 70 * 71 * <h3>Primitive Arrays</h3> 72 * 73 * <p>There are a variety of methods for reading and writing raw arrays 74 * of primitive objects, which generally result in writing a 4-byte length 75 * followed by the primitive data items. The methods for reading can either 76 * read the data into an existing array, or create and return a new array. 77 * These available types are:</p> 78 * 79 * <ul> 80 * <li> {@link #writeBooleanArray(boolean[])}, 81 * {@link #readBooleanArray(boolean[])}, {@link #createBooleanArray()} 82 * <li> {@link #writeByteArray(byte[])}, 83 * {@link #writeByteArray(byte[], int, int)}, {@link #readByteArray(byte[])}, 84 * {@link #createByteArray()} 85 * <li> {@link #writeCharArray(char[])}, {@link #readCharArray(char[])}, 86 * {@link #createCharArray()} 87 * <li> {@link #writeDoubleArray(double[])}, {@link #readDoubleArray(double[])}, 88 * {@link #createDoubleArray()} 89 * <li> {@link #writeFloatArray(float[])}, {@link #readFloatArray(float[])}, 90 * {@link #createFloatArray()} 91 * <li> {@link #writeIntArray(int[])}, {@link #readIntArray(int[])}, 92 * {@link #createIntArray()} 93 * <li> {@link #writeLongArray(long[])}, {@link #readLongArray(long[])}, 94 * {@link #createLongArray()} 95 * <li> {@link #writeStringArray(String[])}, {@link #readStringArray(String[])}, 96 * {@link #createStringArray()}. 97 * <li> {@link #writeSparseBooleanArray(SparseBooleanArray)}, 98 * {@link #readSparseBooleanArray()}. 99 * </ul> 100 * 101 * <h3>Parcelables</h3> 102 * 103 * <p>The {@link Parcelable} protocol provides an extremely efficient (but 104 * low-level) protocol for objects to write and read themselves from Parcels. 105 * You can use the direct methods {@link #writeParcelable(Parcelable, int)} 106 * and {@link #readParcelable(ClassLoader)} or 107 * {@link #writeParcelableArray} and 108 * {@link #readParcelableArray(ClassLoader)} to write or read. These 109 * methods write both the class type and its data to the Parcel, allowing 110 * that class to be reconstructed from the appropriate class loader when 111 * later reading.</p> 112 * 113 * <p>There are also some methods that provide a more efficient way to work 114 * with Parcelables: {@link #writeTypedArray}, 115 * {@link #writeTypedList(List)}, 116 * {@link #readTypedArray} and {@link #readTypedList}. These methods 117 * do not write the class information of the original object: instead, the 118 * caller of the read function must know what type to expect and pass in the 119 * appropriate {@link Parcelable.Creator Parcelable.Creator} instead to 120 * properly construct the new object and read its data. (To more efficient 121 * write and read a single Parceable object, you can directly call 122 * {@link Parcelable#writeToParcel Parcelable.writeToParcel} and 123 * {@link Parcelable.Creator#createFromParcel Parcelable.Creator.createFromParcel} 124 * yourself.)</p> 125 * 126 * <h3>Bundles</h3> 127 * 128 * <p>A special type-safe container, called {@link Bundle}, is available 129 * for key/value maps of heterogeneous values. This has many optimizations 130 * for improved performance when reading and writing data, and its type-safe 131 * API avoids difficult to debug type errors when finally marshalling the 132 * data contents into a Parcel. The methods to use are 133 * {@link #writeBundle(Bundle)}, {@link #readBundle()}, and 134 * {@link #readBundle(ClassLoader)}. 135 * 136 * <h3>Active Objects</h3> 137 * 138 * <p>An unusual feature of Parcel is the ability to read and write active 139 * objects. For these objects the actual contents of the object is not 140 * written, rather a special token referencing the object is written. When 141 * reading the object back from the Parcel, you do not get a new instance of 142 * the object, but rather a handle that operates on the exact same object that 143 * was originally written. There are two forms of active objects available.</p> 144 * 145 * <p>{@link Binder} objects are a core facility of Android's general cross-process 146 * communication system. The {@link IBinder} interface describes an abstract 147 * protocol with a Binder object. Any such interface can be written in to 148 * a Parcel, and upon reading you will receive either the original object 149 * implementing that interface or a special proxy implementation 150 * that communicates calls back to the original object. The methods to use are 151 * {@link #writeStrongBinder(IBinder)}, 152 * {@link #writeStrongInterface(IInterface)}, {@link #readStrongBinder()}, 153 * {@link #writeBinderArray(IBinder[])}, {@link #readBinderArray(IBinder[])}, 154 * {@link #createBinderArray()}, 155 * {@link #writeBinderList(List)}, {@link #readBinderList(List)}, 156 * {@link #createBinderArrayList()}.</p> 157 * 158 * <p>FileDescriptor objects, representing raw Linux file descriptor identifiers, 159 * can be written and {@link ParcelFileDescriptor} objects returned to operate 160 * on the original file descriptor. The returned file descriptor is a dup 161 * of the original file descriptor: the object and fd is different, but 162 * operating on the same underlying file stream, with the same position, etc. 163 * The methods to use are {@link #writeFileDescriptor(FileDescriptor)}, 164 * {@link #readFileDescriptor()}. 165 * 166 * <h3>Untyped Containers</h3> 167 * 168 * <p>A final class of methods are for writing and reading standard Java 169 * containers of arbitrary types. These all revolve around the 170 * {@link #writeValue(Object)} and {@link #readValue(ClassLoader)} methods 171 * which define the types of objects allowed. The container methods are 172 * {@link #writeArray(Object[])}, {@link #readArray(ClassLoader)}, 173 * {@link #writeList(List)}, {@link #readList(List, ClassLoader)}, 174 * {@link #readArrayList(ClassLoader)}, 175 * {@link #writeMap(Map)}, {@link #readMap(Map, ClassLoader)}, 176 * {@link #writeSparseArray(SparseArray)}, 177 * {@link #readSparseArray(ClassLoader)}. 178 */ 179public final class Parcel { 180 private static final boolean DEBUG_RECYCLE = false; 181 private static final String TAG = "Parcel"; 182 183 @SuppressWarnings({"UnusedDeclaration"}) 184 private int mNativePtr; // used by native code 185 186 /** 187 * Flag indicating if {@link #mNativePtr} was allocated by this object, 188 * indicating that we're responsible for its lifecycle. 189 */ 190 private boolean mOwnsNativeParcelObject; 191 192 private RuntimeException mStack; 193 194 private static final int POOL_SIZE = 6; 195 private static final Parcel[] sOwnedPool = new Parcel[POOL_SIZE]; 196 private static final Parcel[] sHolderPool = new Parcel[POOL_SIZE]; 197 198 private static final int VAL_NULL = -1; 199 private static final int VAL_STRING = 0; 200 private static final int VAL_INTEGER = 1; 201 private static final int VAL_MAP = 2; 202 private static final int VAL_BUNDLE = 3; 203 private static final int VAL_PARCELABLE = 4; 204 private static final int VAL_SHORT = 5; 205 private static final int VAL_LONG = 6; 206 private static final int VAL_FLOAT = 7; 207 private static final int VAL_DOUBLE = 8; 208 private static final int VAL_BOOLEAN = 9; 209 private static final int VAL_CHARSEQUENCE = 10; 210 private static final int VAL_LIST = 11; 211 private static final int VAL_SPARSEARRAY = 12; 212 private static final int VAL_BYTEARRAY = 13; 213 private static final int VAL_STRINGARRAY = 14; 214 private static final int VAL_IBINDER = 15; 215 private static final int VAL_PARCELABLEARRAY = 16; 216 private static final int VAL_OBJECTARRAY = 17; 217 private static final int VAL_INTARRAY = 18; 218 private static final int VAL_LONGARRAY = 19; 219 private static final int VAL_BYTE = 20; 220 private static final int VAL_SERIALIZABLE = 21; 221 private static final int VAL_SPARSEBOOLEANARRAY = 22; 222 private static final int VAL_BOOLEANARRAY = 23; 223 private static final int VAL_CHARSEQUENCEARRAY = 24; 224 225 // The initial int32 in a Binder call's reply Parcel header: 226 private static final int EX_SECURITY = -1; 227 private static final int EX_BAD_PARCELABLE = -2; 228 private static final int EX_ILLEGAL_ARGUMENT = -3; 229 private static final int EX_NULL_POINTER = -4; 230 private static final int EX_ILLEGAL_STATE = -5; 231 private static final int EX_HAS_REPLY_HEADER = -128; // special; see below 232 233 private static native int nativeDataSize(int nativePtr); 234 private static native int nativeDataAvail(int nativePtr); 235 private static native int nativeDataPosition(int nativePtr); 236 private static native int nativeDataCapacity(int nativePtr); 237 private static native void nativeSetDataSize(int nativePtr, int size); 238 private static native void nativeSetDataPosition(int nativePtr, int pos); 239 private static native void nativeSetDataCapacity(int nativePtr, int size); 240 241 private static native boolean nativePushAllowFds(int nativePtr, boolean allowFds); 242 private static native void nativeRestoreAllowFds(int nativePtr, boolean lastValue); 243 244 private static native void nativeWriteByteArray(int nativePtr, byte[] b, int offset, int len); 245 private static native void nativeWriteInt(int nativePtr, int val); 246 private static native void nativeWriteLong(int nativePtr, long val); 247 private static native void nativeWriteFloat(int nativePtr, float val); 248 private static native void nativeWriteDouble(int nativePtr, double val); 249 private static native void nativeWriteString(int nativePtr, String val); 250 private static native void nativeWriteStrongBinder(int nativePtr, IBinder val); 251 private static native void nativeWriteFileDescriptor(int nativePtr, FileDescriptor val); 252 253 private static native byte[] nativeCreateByteArray(int nativePtr); 254 private static native int nativeReadInt(int nativePtr); 255 private static native long nativeReadLong(int nativePtr); 256 private static native float nativeReadFloat(int nativePtr); 257 private static native double nativeReadDouble(int nativePtr); 258 private static native String nativeReadString(int nativePtr); 259 private static native IBinder nativeReadStrongBinder(int nativePtr); 260 private static native FileDescriptor nativeReadFileDescriptor(int nativePtr); 261 262 private static native int nativeCreate(); 263 private static native void nativeFreeBuffer(int nativePtr); 264 private static native void nativeDestroy(int nativePtr); 265 266 private static native byte[] nativeMarshall(int nativePtr); 267 private static native void nativeUnmarshall( 268 int nativePtr, byte[] data, int offest, int length); 269 private static native void nativeAppendFrom( 270 int thisNativePtr, int otherNativePtr, int offset, int length); 271 private static native boolean nativeHasFileDescriptors(int nativePtr); 272 private static native void nativeWriteInterfaceToken(int nativePtr, String interfaceName); 273 private static native void nativeEnforceInterface(int nativePtr, String interfaceName); 274 275 public final static Parcelable.Creator<String> STRING_CREATOR 276 = new Parcelable.Creator<String>() { 277 public String createFromParcel(Parcel source) { 278 return source.readString(); 279 } 280 public String[] newArray(int size) { 281 return new String[size]; 282 } 283 }; 284 285 /** 286 * Retrieve a new Parcel object from the pool. 287 */ 288 public static Parcel obtain() { 289 final Parcel[] pool = sOwnedPool; 290 synchronized (pool) { 291 Parcel p; 292 for (int i=0; i<POOL_SIZE; i++) { 293 p = pool[i]; 294 if (p != null) { 295 pool[i] = null; 296 if (DEBUG_RECYCLE) { 297 p.mStack = new RuntimeException(); 298 } 299 return p; 300 } 301 } 302 } 303 return new Parcel(0); 304 } 305 306 /** 307 * Put a Parcel object back into the pool. You must not touch 308 * the object after this call. 309 */ 310 public final void recycle() { 311 if (DEBUG_RECYCLE) mStack = null; 312 freeBuffer(); 313 314 final Parcel[] pool; 315 if (mOwnsNativeParcelObject) { 316 pool = sOwnedPool; 317 } else { 318 mNativePtr = 0; 319 pool = sHolderPool; 320 } 321 322 synchronized (pool) { 323 for (int i=0; i<POOL_SIZE; i++) { 324 if (pool[i] == null) { 325 pool[i] = this; 326 return; 327 } 328 } 329 } 330 } 331 332 /** 333 * Returns the total amount of data contained in the parcel. 334 */ 335 public final int dataSize() { 336 return nativeDataSize(mNativePtr); 337 } 338 339 /** 340 * Returns the amount of data remaining to be read from the 341 * parcel. That is, {@link #dataSize}-{@link #dataPosition}. 342 */ 343 public final int dataAvail() { 344 return nativeDataAvail(mNativePtr); 345 } 346 347 /** 348 * Returns the current position in the parcel data. Never 349 * more than {@link #dataSize}. 350 */ 351 public final int dataPosition() { 352 return nativeDataPosition(mNativePtr); 353 } 354 355 /** 356 * Returns the total amount of space in the parcel. This is always 357 * >= {@link #dataSize}. The difference between it and dataSize() is the 358 * amount of room left until the parcel needs to re-allocate its 359 * data buffer. 360 */ 361 public final int dataCapacity() { 362 return nativeDataCapacity(mNativePtr); 363 } 364 365 /** 366 * Change the amount of data in the parcel. Can be either smaller or 367 * larger than the current size. If larger than the current capacity, 368 * more memory will be allocated. 369 * 370 * @param size The new number of bytes in the Parcel. 371 */ 372 public final void setDataSize(int size) { 373 nativeSetDataSize(mNativePtr, size); 374 } 375 376 /** 377 * Move the current read/write position in the parcel. 378 * @param pos New offset in the parcel; must be between 0 and 379 * {@link #dataSize}. 380 */ 381 public final void setDataPosition(int pos) { 382 nativeSetDataPosition(mNativePtr, pos); 383 } 384 385 /** 386 * Change the capacity (current available space) of the parcel. 387 * 388 * @param size The new capacity of the parcel, in bytes. Can not be 389 * less than {@link #dataSize} -- that is, you can not drop existing data 390 * with this method. 391 */ 392 public final void setDataCapacity(int size) { 393 nativeSetDataCapacity(mNativePtr, size); 394 } 395 396 /** @hide */ 397 public final boolean pushAllowFds(boolean allowFds) { 398 return nativePushAllowFds(mNativePtr, allowFds); 399 } 400 401 /** @hide */ 402 public final void restoreAllowFds(boolean lastValue) { 403 nativeRestoreAllowFds(mNativePtr, lastValue); 404 } 405 406 /** 407 * Returns the raw bytes of the parcel. 408 * 409 * <p class="note">The data you retrieve here <strong>must not</strong> 410 * be placed in any kind of persistent storage (on local disk, across 411 * a network, etc). For that, you should use standard serialization 412 * or another kind of general serialization mechanism. The Parcel 413 * marshalled representation is highly optimized for local IPC, and as 414 * such does not attempt to maintain compatibility with data created 415 * in different versions of the platform. 416 */ 417 public final byte[] marshall() { 418 return nativeMarshall(mNativePtr); 419 } 420 421 /** 422 * Set the bytes in data to be the raw bytes of this Parcel. 423 */ 424 public final void unmarshall(byte[] data, int offest, int length) { 425 nativeUnmarshall(mNativePtr, data, offest, length); 426 } 427 428 public final void appendFrom(Parcel parcel, int offset, int length) { 429 nativeAppendFrom(mNativePtr, parcel.mNativePtr, offset, length); 430 } 431 432 /** 433 * Report whether the parcel contains any marshalled file descriptors. 434 */ 435 public final boolean hasFileDescriptors() { 436 return nativeHasFileDescriptors(mNativePtr); 437 } 438 439 /** 440 * Store or read an IBinder interface token in the parcel at the current 441 * {@link #dataPosition}. This is used to validate that the marshalled 442 * transaction is intended for the target interface. 443 */ 444 public final void writeInterfaceToken(String interfaceName) { 445 nativeWriteInterfaceToken(mNativePtr, interfaceName); 446 } 447 448 public final void enforceInterface(String interfaceName) { 449 nativeEnforceInterface(mNativePtr, interfaceName); 450 } 451 452 /** 453 * Write a byte array into the parcel at the current {@link #dataPosition}, 454 * growing {@link #dataCapacity} if needed. 455 * @param b Bytes to place into the parcel. 456 */ 457 public final void writeByteArray(byte[] b) { 458 writeByteArray(b, 0, (b != null) ? b.length : 0); 459 } 460 461 /** 462 * Write a byte array into the parcel at the current {@link #dataPosition}, 463 * growing {@link #dataCapacity} if needed. 464 * @param b Bytes to place into the parcel. 465 * @param offset Index of first byte to be written. 466 * @param len Number of bytes to write. 467 */ 468 public final void writeByteArray(byte[] b, int offset, int len) { 469 if (b == null) { 470 writeInt(-1); 471 return; 472 } 473 Arrays.checkOffsetAndCount(b.length, offset, len); 474 nativeWriteByteArray(mNativePtr, b, offset, len); 475 } 476 477 /** 478 * Write an integer value into the parcel at the current dataPosition(), 479 * growing dataCapacity() if needed. 480 */ 481 public final void writeInt(int val) { 482 nativeWriteInt(mNativePtr, val); 483 } 484 485 /** 486 * Write a long integer value into the parcel at the current dataPosition(), 487 * growing dataCapacity() if needed. 488 */ 489 public final void writeLong(long val) { 490 nativeWriteLong(mNativePtr, val); 491 } 492 493 /** 494 * Write a floating point value into the parcel at the current 495 * dataPosition(), growing dataCapacity() if needed. 496 */ 497 public final void writeFloat(float val) { 498 nativeWriteFloat(mNativePtr, val); 499 } 500 501 /** 502 * Write a double precision floating point value into the parcel at the 503 * current dataPosition(), growing dataCapacity() if needed. 504 */ 505 public final void writeDouble(double val) { 506 nativeWriteDouble(mNativePtr, val); 507 } 508 509 /** 510 * Write a string value into the parcel at the current dataPosition(), 511 * growing dataCapacity() if needed. 512 */ 513 public final void writeString(String val) { 514 nativeWriteString(mNativePtr, val); 515 } 516 517 /** 518 * Write a CharSequence value into the parcel at the current dataPosition(), 519 * growing dataCapacity() if needed. 520 * @hide 521 */ 522 public final void writeCharSequence(CharSequence val) { 523 TextUtils.writeToParcel(val, this, 0); 524 } 525 526 /** 527 * Write an object into the parcel at the current dataPosition(), 528 * growing dataCapacity() if needed. 529 */ 530 public final void writeStrongBinder(IBinder val) { 531 nativeWriteStrongBinder(mNativePtr, val); 532 } 533 534 /** 535 * Write an object into the parcel at the current dataPosition(), 536 * growing dataCapacity() if needed. 537 */ 538 public final void writeStrongInterface(IInterface val) { 539 writeStrongBinder(val == null ? null : val.asBinder()); 540 } 541 542 /** 543 * Write a FileDescriptor into the parcel at the current dataPosition(), 544 * growing dataCapacity() if needed. 545 * 546 * <p class="caution">The file descriptor will not be closed, which may 547 * result in file descriptor leaks when objects are returned from Binder 548 * calls. Use {@link ParcelFileDescriptor#writeToParcel} instead, which 549 * accepts contextual flags and will close the original file descriptor 550 * if {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} is set.</p> 551 */ 552 public final void writeFileDescriptor(FileDescriptor val) { 553 nativeWriteFileDescriptor(mNativePtr, val); 554 } 555 556 /** 557 * Write a byte value into the parcel at the current dataPosition(), 558 * growing dataCapacity() if needed. 559 */ 560 public final void writeByte(byte val) { 561 writeInt(val); 562 } 563 564 /** 565 * Please use {@link #writeBundle} instead. Flattens a Map into the parcel 566 * at the current dataPosition(), 567 * growing dataCapacity() if needed. The Map keys must be String objects. 568 * The Map values are written using {@link #writeValue} and must follow 569 * the specification there. 570 * 571 * <p>It is strongly recommended to use {@link #writeBundle} instead of 572 * this method, since the Bundle class provides a type-safe API that 573 * allows you to avoid mysterious type errors at the point of marshalling. 574 */ 575 public final void writeMap(Map val) { 576 writeMapInternal((Map<String, Object>) val); 577 } 578 579 /** 580 * Flatten a Map into the parcel at the current dataPosition(), 581 * growing dataCapacity() if needed. The Map keys must be String objects. 582 */ 583 /* package */ void writeMapInternal(Map<String,Object> val) { 584 if (val == null) { 585 writeInt(-1); 586 return; 587 } 588 Set<Map.Entry<String,Object>> entries = val.entrySet(); 589 writeInt(entries.size()); 590 for (Map.Entry<String,Object> e : entries) { 591 writeValue(e.getKey()); 592 writeValue(e.getValue()); 593 } 594 } 595 596 /** 597 * Flatten an ArrayMap into the parcel at the current dataPosition(), 598 * growing dataCapacity() if needed. The Map keys must be String objects. 599 */ 600 /* package */ void writeArrayMapInternal(ArrayMap<String,Object> val) { 601 if (val == null) { 602 writeInt(-1); 603 return; 604 } 605 final int N = val.size(); 606 writeInt(N); 607 for (int i=0; i<N; i++) { 608 writeValue(val.keyAt(i)); 609 writeValue(val.valueAt(i)); 610 } 611 } 612 613 /** 614 * Flatten a Bundle into the parcel at the current dataPosition(), 615 * growing dataCapacity() if needed. 616 */ 617 public final void writeBundle(Bundle val) { 618 if (val == null) { 619 writeInt(-1); 620 return; 621 } 622 623 val.writeToParcel(this, 0); 624 } 625 626 /** 627 * Flatten a List into the parcel at the current dataPosition(), growing 628 * dataCapacity() if needed. The List values are written using 629 * {@link #writeValue} and must follow the specification there. 630 */ 631 public final void writeList(List val) { 632 if (val == null) { 633 writeInt(-1); 634 return; 635 } 636 int N = val.size(); 637 int i=0; 638 writeInt(N); 639 while (i < N) { 640 writeValue(val.get(i)); 641 i++; 642 } 643 } 644 645 /** 646 * Flatten an Object array into the parcel at the current dataPosition(), 647 * growing dataCapacity() if needed. The array values are written using 648 * {@link #writeValue} and must follow the specification there. 649 */ 650 public final void writeArray(Object[] val) { 651 if (val == null) { 652 writeInt(-1); 653 return; 654 } 655 int N = val.length; 656 int i=0; 657 writeInt(N); 658 while (i < N) { 659 writeValue(val[i]); 660 i++; 661 } 662 } 663 664 /** 665 * Flatten a generic SparseArray into the parcel at the current 666 * dataPosition(), growing dataCapacity() if needed. The SparseArray 667 * values are written using {@link #writeValue} and must follow the 668 * specification there. 669 */ 670 public final void writeSparseArray(SparseArray<Object> val) { 671 if (val == null) { 672 writeInt(-1); 673 return; 674 } 675 int N = val.size(); 676 writeInt(N); 677 int i=0; 678 while (i < N) { 679 writeInt(val.keyAt(i)); 680 writeValue(val.valueAt(i)); 681 i++; 682 } 683 } 684 685 public final void writeSparseBooleanArray(SparseBooleanArray val) { 686 if (val == null) { 687 writeInt(-1); 688 return; 689 } 690 int N = val.size(); 691 writeInt(N); 692 int i=0; 693 while (i < N) { 694 writeInt(val.keyAt(i)); 695 writeByte((byte)(val.valueAt(i) ? 1 : 0)); 696 i++; 697 } 698 } 699 700 public final void writeBooleanArray(boolean[] val) { 701 if (val != null) { 702 int N = val.length; 703 writeInt(N); 704 for (int i=0; i<N; i++) { 705 writeInt(val[i] ? 1 : 0); 706 } 707 } else { 708 writeInt(-1); 709 } 710 } 711 712 public final boolean[] createBooleanArray() { 713 int N = readInt(); 714 // >>2 as a fast divide-by-4 works in the create*Array() functions 715 // because dataAvail() will never return a negative number. 4 is 716 // the size of a stored boolean in the stream. 717 if (N >= 0 && N <= (dataAvail() >> 2)) { 718 boolean[] val = new boolean[N]; 719 for (int i=0; i<N; i++) { 720 val[i] = readInt() != 0; 721 } 722 return val; 723 } else { 724 return null; 725 } 726 } 727 728 public final void readBooleanArray(boolean[] val) { 729 int N = readInt(); 730 if (N == val.length) { 731 for (int i=0; i<N; i++) { 732 val[i] = readInt() != 0; 733 } 734 } else { 735 throw new RuntimeException("bad array lengths"); 736 } 737 } 738 739 public final void writeCharArray(char[] val) { 740 if (val != null) { 741 int N = val.length; 742 writeInt(N); 743 for (int i=0; i<N; i++) { 744 writeInt((int)val[i]); 745 } 746 } else { 747 writeInt(-1); 748 } 749 } 750 751 public final char[] createCharArray() { 752 int N = readInt(); 753 if (N >= 0 && N <= (dataAvail() >> 2)) { 754 char[] val = new char[N]; 755 for (int i=0; i<N; i++) { 756 val[i] = (char)readInt(); 757 } 758 return val; 759 } else { 760 return null; 761 } 762 } 763 764 public final void readCharArray(char[] val) { 765 int N = readInt(); 766 if (N == val.length) { 767 for (int i=0; i<N; i++) { 768 val[i] = (char)readInt(); 769 } 770 } else { 771 throw new RuntimeException("bad array lengths"); 772 } 773 } 774 775 public final void writeIntArray(int[] val) { 776 if (val != null) { 777 int N = val.length; 778 writeInt(N); 779 for (int i=0; i<N; i++) { 780 writeInt(val[i]); 781 } 782 } else { 783 writeInt(-1); 784 } 785 } 786 787 public final int[] createIntArray() { 788 int N = readInt(); 789 if (N >= 0 && N <= (dataAvail() >> 2)) { 790 int[] val = new int[N]; 791 for (int i=0; i<N; i++) { 792 val[i] = readInt(); 793 } 794 return val; 795 } else { 796 return null; 797 } 798 } 799 800 public final void readIntArray(int[] val) { 801 int N = readInt(); 802 if (N == val.length) { 803 for (int i=0; i<N; i++) { 804 val[i] = readInt(); 805 } 806 } else { 807 throw new RuntimeException("bad array lengths"); 808 } 809 } 810 811 public final void writeLongArray(long[] val) { 812 if (val != null) { 813 int N = val.length; 814 writeInt(N); 815 for (int i=0; i<N; i++) { 816 writeLong(val[i]); 817 } 818 } else { 819 writeInt(-1); 820 } 821 } 822 823 public final long[] createLongArray() { 824 int N = readInt(); 825 // >>3 because stored longs are 64 bits 826 if (N >= 0 && N <= (dataAvail() >> 3)) { 827 long[] val = new long[N]; 828 for (int i=0; i<N; i++) { 829 val[i] = readLong(); 830 } 831 return val; 832 } else { 833 return null; 834 } 835 } 836 837 public final void readLongArray(long[] val) { 838 int N = readInt(); 839 if (N == val.length) { 840 for (int i=0; i<N; i++) { 841 val[i] = readLong(); 842 } 843 } else { 844 throw new RuntimeException("bad array lengths"); 845 } 846 } 847 848 public final void writeFloatArray(float[] val) { 849 if (val != null) { 850 int N = val.length; 851 writeInt(N); 852 for (int i=0; i<N; i++) { 853 writeFloat(val[i]); 854 } 855 } else { 856 writeInt(-1); 857 } 858 } 859 860 public final float[] createFloatArray() { 861 int N = readInt(); 862 // >>2 because stored floats are 4 bytes 863 if (N >= 0 && N <= (dataAvail() >> 2)) { 864 float[] val = new float[N]; 865 for (int i=0; i<N; i++) { 866 val[i] = readFloat(); 867 } 868 return val; 869 } else { 870 return null; 871 } 872 } 873 874 public final void readFloatArray(float[] val) { 875 int N = readInt(); 876 if (N == val.length) { 877 for (int i=0; i<N; i++) { 878 val[i] = readFloat(); 879 } 880 } else { 881 throw new RuntimeException("bad array lengths"); 882 } 883 } 884 885 public final void writeDoubleArray(double[] val) { 886 if (val != null) { 887 int N = val.length; 888 writeInt(N); 889 for (int i=0; i<N; i++) { 890 writeDouble(val[i]); 891 } 892 } else { 893 writeInt(-1); 894 } 895 } 896 897 public final double[] createDoubleArray() { 898 int N = readInt(); 899 // >>3 because stored doubles are 8 bytes 900 if (N >= 0 && N <= (dataAvail() >> 3)) { 901 double[] val = new double[N]; 902 for (int i=0; i<N; i++) { 903 val[i] = readDouble(); 904 } 905 return val; 906 } else { 907 return null; 908 } 909 } 910 911 public final void readDoubleArray(double[] val) { 912 int N = readInt(); 913 if (N == val.length) { 914 for (int i=0; i<N; i++) { 915 val[i] = readDouble(); 916 } 917 } else { 918 throw new RuntimeException("bad array lengths"); 919 } 920 } 921 922 public final void writeStringArray(String[] val) { 923 if (val != null) { 924 int N = val.length; 925 writeInt(N); 926 for (int i=0; i<N; i++) { 927 writeString(val[i]); 928 } 929 } else { 930 writeInt(-1); 931 } 932 } 933 934 public final String[] createStringArray() { 935 int N = readInt(); 936 if (N >= 0) { 937 String[] val = new String[N]; 938 for (int i=0; i<N; i++) { 939 val[i] = readString(); 940 } 941 return val; 942 } else { 943 return null; 944 } 945 } 946 947 public final void readStringArray(String[] val) { 948 int N = readInt(); 949 if (N == val.length) { 950 for (int i=0; i<N; i++) { 951 val[i] = readString(); 952 } 953 } else { 954 throw new RuntimeException("bad array lengths"); 955 } 956 } 957 958 public final void writeBinderArray(IBinder[] val) { 959 if (val != null) { 960 int N = val.length; 961 writeInt(N); 962 for (int i=0; i<N; i++) { 963 writeStrongBinder(val[i]); 964 } 965 } else { 966 writeInt(-1); 967 } 968 } 969 970 /** 971 * @hide 972 */ 973 public final void writeCharSequenceArray(CharSequence[] val) { 974 if (val != null) { 975 int N = val.length; 976 writeInt(N); 977 for (int i=0; i<N; i++) { 978 writeCharSequence(val[i]); 979 } 980 } else { 981 writeInt(-1); 982 } 983 } 984 985 public final IBinder[] createBinderArray() { 986 int N = readInt(); 987 if (N >= 0) { 988 IBinder[] val = new IBinder[N]; 989 for (int i=0; i<N; i++) { 990 val[i] = readStrongBinder(); 991 } 992 return val; 993 } else { 994 return null; 995 } 996 } 997 998 public final void readBinderArray(IBinder[] val) { 999 int N = readInt(); 1000 if (N == val.length) { 1001 for (int i=0; i<N; i++) { 1002 val[i] = readStrongBinder(); 1003 } 1004 } else { 1005 throw new RuntimeException("bad array lengths"); 1006 } 1007 } 1008 1009 /** 1010 * Flatten a List containing a particular object type into the parcel, at 1011 * the current dataPosition() and growing dataCapacity() if needed. The 1012 * type of the objects in the list must be one that implements Parcelable. 1013 * Unlike the generic writeList() method, however, only the raw data of the 1014 * objects is written and not their type, so you must use the corresponding 1015 * readTypedList() to unmarshall them. 1016 * 1017 * @param val The list of objects to be written. 1018 * 1019 * @see #createTypedArrayList 1020 * @see #readTypedList 1021 * @see Parcelable 1022 */ 1023 public final <T extends Parcelable> void writeTypedList(List<T> val) { 1024 if (val == null) { 1025 writeInt(-1); 1026 return; 1027 } 1028 int N = val.size(); 1029 int i=0; 1030 writeInt(N); 1031 while (i < N) { 1032 T item = val.get(i); 1033 if (item != null) { 1034 writeInt(1); 1035 item.writeToParcel(this, 0); 1036 } else { 1037 writeInt(0); 1038 } 1039 i++; 1040 } 1041 } 1042 1043 /** 1044 * Flatten a List containing String objects into the parcel, at 1045 * the current dataPosition() and growing dataCapacity() if needed. They 1046 * can later be retrieved with {@link #createStringArrayList} or 1047 * {@link #readStringList}. 1048 * 1049 * @param val The list of strings to be written. 1050 * 1051 * @see #createStringArrayList 1052 * @see #readStringList 1053 */ 1054 public final void writeStringList(List<String> val) { 1055 if (val == null) { 1056 writeInt(-1); 1057 return; 1058 } 1059 int N = val.size(); 1060 int i=0; 1061 writeInt(N); 1062 while (i < N) { 1063 writeString(val.get(i)); 1064 i++; 1065 } 1066 } 1067 1068 /** 1069 * Flatten a List containing IBinder objects into the parcel, at 1070 * the current dataPosition() and growing dataCapacity() if needed. They 1071 * can later be retrieved with {@link #createBinderArrayList} or 1072 * {@link #readBinderList}. 1073 * 1074 * @param val The list of strings to be written. 1075 * 1076 * @see #createBinderArrayList 1077 * @see #readBinderList 1078 */ 1079 public final void writeBinderList(List<IBinder> val) { 1080 if (val == null) { 1081 writeInt(-1); 1082 return; 1083 } 1084 int N = val.size(); 1085 int i=0; 1086 writeInt(N); 1087 while (i < N) { 1088 writeStrongBinder(val.get(i)); 1089 i++; 1090 } 1091 } 1092 1093 /** 1094 * Flatten a heterogeneous array containing a particular object type into 1095 * the parcel, at 1096 * the current dataPosition() and growing dataCapacity() if needed. The 1097 * type of the objects in the array must be one that implements Parcelable. 1098 * Unlike the {@link #writeParcelableArray} method, however, only the 1099 * raw data of the objects is written and not their type, so you must use 1100 * {@link #readTypedArray} with the correct corresponding 1101 * {@link Parcelable.Creator} implementation to unmarshall them. 1102 * 1103 * @param val The array of objects to be written. 1104 * @param parcelableFlags Contextual flags as per 1105 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1106 * 1107 * @see #readTypedArray 1108 * @see #writeParcelableArray 1109 * @see Parcelable.Creator 1110 */ 1111 public final <T extends Parcelable> void writeTypedArray(T[] val, 1112 int parcelableFlags) { 1113 if (val != null) { 1114 int N = val.length; 1115 writeInt(N); 1116 for (int i=0; i<N; i++) { 1117 T item = val[i]; 1118 if (item != null) { 1119 writeInt(1); 1120 item.writeToParcel(this, parcelableFlags); 1121 } else { 1122 writeInt(0); 1123 } 1124 } 1125 } else { 1126 writeInt(-1); 1127 } 1128 } 1129 1130 /** 1131 * Flatten a generic object in to a parcel. The given Object value may 1132 * currently be one of the following types: 1133 * 1134 * <ul> 1135 * <li> null 1136 * <li> String 1137 * <li> Byte 1138 * <li> Short 1139 * <li> Integer 1140 * <li> Long 1141 * <li> Float 1142 * <li> Double 1143 * <li> Boolean 1144 * <li> String[] 1145 * <li> boolean[] 1146 * <li> byte[] 1147 * <li> int[] 1148 * <li> long[] 1149 * <li> Object[] (supporting objects of the same type defined here). 1150 * <li> {@link Bundle} 1151 * <li> Map (as supported by {@link #writeMap}). 1152 * <li> Any object that implements the {@link Parcelable} protocol. 1153 * <li> Parcelable[] 1154 * <li> CharSequence (as supported by {@link TextUtils#writeToParcel}). 1155 * <li> List (as supported by {@link #writeList}). 1156 * <li> {@link SparseArray} (as supported by {@link #writeSparseArray(SparseArray)}). 1157 * <li> {@link IBinder} 1158 * <li> Any object that implements Serializable (but see 1159 * {@link #writeSerializable} for caveats). Note that all of the 1160 * previous types have relatively efficient implementations for 1161 * writing to a Parcel; having to rely on the generic serialization 1162 * approach is much less efficient and should be avoided whenever 1163 * possible. 1164 * </ul> 1165 * 1166 * <p class="caution">{@link Parcelable} objects are written with 1167 * {@link Parcelable#writeToParcel} using contextual flags of 0. When 1168 * serializing objects containing {@link ParcelFileDescriptor}s, 1169 * this may result in file descriptor leaks when they are returned from 1170 * Binder calls (where {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE} 1171 * should be used).</p> 1172 */ 1173 public final void writeValue(Object v) { 1174 if (v == null) { 1175 writeInt(VAL_NULL); 1176 } else if (v instanceof String) { 1177 writeInt(VAL_STRING); 1178 writeString((String) v); 1179 } else if (v instanceof Integer) { 1180 writeInt(VAL_INTEGER); 1181 writeInt((Integer) v); 1182 } else if (v instanceof Map) { 1183 writeInt(VAL_MAP); 1184 writeMap((Map) v); 1185 } else if (v instanceof Bundle) { 1186 // Must be before Parcelable 1187 writeInt(VAL_BUNDLE); 1188 writeBundle((Bundle) v); 1189 } else if (v instanceof Parcelable) { 1190 writeInt(VAL_PARCELABLE); 1191 writeParcelable((Parcelable) v, 0); 1192 } else if (v instanceof Short) { 1193 writeInt(VAL_SHORT); 1194 writeInt(((Short) v).intValue()); 1195 } else if (v instanceof Long) { 1196 writeInt(VAL_LONG); 1197 writeLong((Long) v); 1198 } else if (v instanceof Float) { 1199 writeInt(VAL_FLOAT); 1200 writeFloat((Float) v); 1201 } else if (v instanceof Double) { 1202 writeInt(VAL_DOUBLE); 1203 writeDouble((Double) v); 1204 } else if (v instanceof Boolean) { 1205 writeInt(VAL_BOOLEAN); 1206 writeInt((Boolean) v ? 1 : 0); 1207 } else if (v instanceof CharSequence) { 1208 // Must be after String 1209 writeInt(VAL_CHARSEQUENCE); 1210 writeCharSequence((CharSequence) v); 1211 } else if (v instanceof List) { 1212 writeInt(VAL_LIST); 1213 writeList((List) v); 1214 } else if (v instanceof SparseArray) { 1215 writeInt(VAL_SPARSEARRAY); 1216 writeSparseArray((SparseArray) v); 1217 } else if (v instanceof boolean[]) { 1218 writeInt(VAL_BOOLEANARRAY); 1219 writeBooleanArray((boolean[]) v); 1220 } else if (v instanceof byte[]) { 1221 writeInt(VAL_BYTEARRAY); 1222 writeByteArray((byte[]) v); 1223 } else if (v instanceof String[]) { 1224 writeInt(VAL_STRINGARRAY); 1225 writeStringArray((String[]) v); 1226 } else if (v instanceof CharSequence[]) { 1227 // Must be after String[] and before Object[] 1228 writeInt(VAL_CHARSEQUENCEARRAY); 1229 writeCharSequenceArray((CharSequence[]) v); 1230 } else if (v instanceof IBinder) { 1231 writeInt(VAL_IBINDER); 1232 writeStrongBinder((IBinder) v); 1233 } else if (v instanceof Parcelable[]) { 1234 writeInt(VAL_PARCELABLEARRAY); 1235 writeParcelableArray((Parcelable[]) v, 0); 1236 } else if (v instanceof Object[]) { 1237 writeInt(VAL_OBJECTARRAY); 1238 writeArray((Object[]) v); 1239 } else if (v instanceof int[]) { 1240 writeInt(VAL_INTARRAY); 1241 writeIntArray((int[]) v); 1242 } else if (v instanceof long[]) { 1243 writeInt(VAL_LONGARRAY); 1244 writeLongArray((long[]) v); 1245 } else if (v instanceof Byte) { 1246 writeInt(VAL_BYTE); 1247 writeInt((Byte) v); 1248 } else if (v instanceof Serializable) { 1249 // Must be last 1250 writeInt(VAL_SERIALIZABLE); 1251 writeSerializable((Serializable) v); 1252 } else { 1253 throw new RuntimeException("Parcel: unable to marshal value " + v); 1254 } 1255 } 1256 1257 /** 1258 * Flatten the name of the class of the Parcelable and its contents 1259 * into the parcel. 1260 * 1261 * @param p The Parcelable object to be written. 1262 * @param parcelableFlags Contextual flags as per 1263 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1264 */ 1265 public final void writeParcelable(Parcelable p, int parcelableFlags) { 1266 if (p == null) { 1267 writeString(null); 1268 return; 1269 } 1270 String name = p.getClass().getName(); 1271 writeString(name); 1272 p.writeToParcel(this, parcelableFlags); 1273 } 1274 1275 /** @hide */ 1276 public final void writeParcelableCreator(Parcelable p) { 1277 String name = p.getClass().getName(); 1278 writeString(name); 1279 } 1280 1281 /** 1282 * Write a generic serializable object in to a Parcel. It is strongly 1283 * recommended that this method be avoided, since the serialization 1284 * overhead is extremely large, and this approach will be much slower than 1285 * using the other approaches to writing data in to a Parcel. 1286 */ 1287 public final void writeSerializable(Serializable s) { 1288 if (s == null) { 1289 writeString(null); 1290 return; 1291 } 1292 String name = s.getClass().getName(); 1293 writeString(name); 1294 1295 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 1296 try { 1297 ObjectOutputStream oos = new ObjectOutputStream(baos); 1298 oos.writeObject(s); 1299 oos.close(); 1300 1301 writeByteArray(baos.toByteArray()); 1302 } catch (IOException ioe) { 1303 throw new RuntimeException("Parcelable encountered " + 1304 "IOException writing serializable object (name = " + name + 1305 ")", ioe); 1306 } 1307 } 1308 1309 /** 1310 * Special function for writing an exception result at the header of 1311 * a parcel, to be used when returning an exception from a transaction. 1312 * Note that this currently only supports a few exception types; any other 1313 * exception will be re-thrown by this function as a RuntimeException 1314 * (to be caught by the system's last-resort exception handling when 1315 * dispatching a transaction). 1316 * 1317 * <p>The supported exception types are: 1318 * <ul> 1319 * <li>{@link BadParcelableException} 1320 * <li>{@link IllegalArgumentException} 1321 * <li>{@link IllegalStateException} 1322 * <li>{@link NullPointerException} 1323 * <li>{@link SecurityException} 1324 * </ul> 1325 * 1326 * @param e The Exception to be written. 1327 * 1328 * @see #writeNoException 1329 * @see #readException 1330 */ 1331 public final void writeException(Exception e) { 1332 int code = 0; 1333 if (e instanceof SecurityException) { 1334 code = EX_SECURITY; 1335 } else if (e instanceof BadParcelableException) { 1336 code = EX_BAD_PARCELABLE; 1337 } else if (e instanceof IllegalArgumentException) { 1338 code = EX_ILLEGAL_ARGUMENT; 1339 } else if (e instanceof NullPointerException) { 1340 code = EX_NULL_POINTER; 1341 } else if (e instanceof IllegalStateException) { 1342 code = EX_ILLEGAL_STATE; 1343 } 1344 writeInt(code); 1345 StrictMode.clearGatheredViolations(); 1346 if (code == 0) { 1347 if (e instanceof RuntimeException) { 1348 throw (RuntimeException) e; 1349 } 1350 throw new RuntimeException(e); 1351 } 1352 writeString(e.getMessage()); 1353 } 1354 1355 /** 1356 * Special function for writing information at the front of the Parcel 1357 * indicating that no exception occurred. 1358 * 1359 * @see #writeException 1360 * @see #readException 1361 */ 1362 public final void writeNoException() { 1363 // Despite the name of this function ("write no exception"), 1364 // it should instead be thought of as "write the RPC response 1365 // header", but because this function name is written out by 1366 // the AIDL compiler, we're not going to rename it. 1367 // 1368 // The response header, in the non-exception case (see also 1369 // writeException above, also called by the AIDL compiler), is 1370 // either a 0 (the default case), or EX_HAS_REPLY_HEADER if 1371 // StrictMode has gathered up violations that have occurred 1372 // during a Binder call, in which case we write out the number 1373 // of violations and their details, serialized, before the 1374 // actual RPC respons data. The receiving end of this is 1375 // readException(), below. 1376 if (StrictMode.hasGatheredViolations()) { 1377 writeInt(EX_HAS_REPLY_HEADER); 1378 final int sizePosition = dataPosition(); 1379 writeInt(0); // total size of fat header, to be filled in later 1380 StrictMode.writeGatheredViolationsToParcel(this); 1381 final int payloadPosition = dataPosition(); 1382 setDataPosition(sizePosition); 1383 writeInt(payloadPosition - sizePosition); // header size 1384 setDataPosition(payloadPosition); 1385 } else { 1386 writeInt(0); 1387 } 1388 } 1389 1390 /** 1391 * Special function for reading an exception result from the header of 1392 * a parcel, to be used after receiving the result of a transaction. This 1393 * will throw the exception for you if it had been written to the Parcel, 1394 * otherwise return and let you read the normal result data from the Parcel. 1395 * 1396 * @see #writeException 1397 * @see #writeNoException 1398 */ 1399 public final void readException() { 1400 int code = readExceptionCode(); 1401 if (code != 0) { 1402 String msg = readString(); 1403 readException(code, msg); 1404 } 1405 } 1406 1407 /** 1408 * Parses the header of a Binder call's response Parcel and 1409 * returns the exception code. Deals with lite or fat headers. 1410 * In the common successful case, this header is generally zero. 1411 * In less common cases, it's a small negative number and will be 1412 * followed by an error string. 1413 * 1414 * This exists purely for android.database.DatabaseUtils and 1415 * insulating it from having to handle fat headers as returned by 1416 * e.g. StrictMode-induced RPC responses. 1417 * 1418 * @hide 1419 */ 1420 public final int readExceptionCode() { 1421 int code = readInt(); 1422 if (code == EX_HAS_REPLY_HEADER) { 1423 int headerSize = readInt(); 1424 if (headerSize == 0) { 1425 Log.e(TAG, "Unexpected zero-sized Parcel reply header."); 1426 } else { 1427 // Currently the only thing in the header is StrictMode stacks, 1428 // but discussions around event/RPC tracing suggest we might 1429 // put that here too. If so, switch on sub-header tags here. 1430 // But for now, just parse out the StrictMode stuff. 1431 StrictMode.readAndHandleBinderCallViolations(this); 1432 } 1433 // And fat response headers are currently only used when 1434 // there are no exceptions, so return no error: 1435 return 0; 1436 } 1437 return code; 1438 } 1439 1440 /** 1441 * Use this function for customized exception handling. 1442 * customized method call this method for all unknown case 1443 * @param code exception code 1444 * @param msg exception message 1445 */ 1446 public final void readException(int code, String msg) { 1447 switch (code) { 1448 case EX_SECURITY: 1449 throw new SecurityException(msg); 1450 case EX_BAD_PARCELABLE: 1451 throw new BadParcelableException(msg); 1452 case EX_ILLEGAL_ARGUMENT: 1453 throw new IllegalArgumentException(msg); 1454 case EX_NULL_POINTER: 1455 throw new NullPointerException(msg); 1456 case EX_ILLEGAL_STATE: 1457 throw new IllegalStateException(msg); 1458 } 1459 throw new RuntimeException("Unknown exception code: " + code 1460 + " msg " + msg); 1461 } 1462 1463 /** 1464 * Read an integer value from the parcel at the current dataPosition(). 1465 */ 1466 public final int readInt() { 1467 return nativeReadInt(mNativePtr); 1468 } 1469 1470 /** 1471 * Read a long integer value from the parcel at the current dataPosition(). 1472 */ 1473 public final long readLong() { 1474 return nativeReadLong(mNativePtr); 1475 } 1476 1477 /** 1478 * Read a floating point value from the parcel at the current 1479 * dataPosition(). 1480 */ 1481 public final float readFloat() { 1482 return nativeReadFloat(mNativePtr); 1483 } 1484 1485 /** 1486 * Read a double precision floating point value from the parcel at the 1487 * current dataPosition(). 1488 */ 1489 public final double readDouble() { 1490 return nativeReadDouble(mNativePtr); 1491 } 1492 1493 /** 1494 * Read a string value from the parcel at the current dataPosition(). 1495 */ 1496 public final String readString() { 1497 return nativeReadString(mNativePtr); 1498 } 1499 1500 /** 1501 * Read a CharSequence value from the parcel at the current dataPosition(). 1502 * @hide 1503 */ 1504 public final CharSequence readCharSequence() { 1505 return TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(this); 1506 } 1507 1508 /** 1509 * Read an object from the parcel at the current dataPosition(). 1510 */ 1511 public final IBinder readStrongBinder() { 1512 return nativeReadStrongBinder(mNativePtr); 1513 } 1514 1515 /** 1516 * Read a FileDescriptor from the parcel at the current dataPosition(). 1517 */ 1518 public final ParcelFileDescriptor readFileDescriptor() { 1519 FileDescriptor fd = nativeReadFileDescriptor(mNativePtr); 1520 return fd != null ? new ParcelFileDescriptor(fd) : null; 1521 } 1522 1523 /** {@hide} */ 1524 public final FileDescriptor readRawFileDescriptor() { 1525 return nativeReadFileDescriptor(mNativePtr); 1526 } 1527 1528 /*package*/ static native FileDescriptor openFileDescriptor(String file, 1529 int mode) throws FileNotFoundException; 1530 /*package*/ static native FileDescriptor dupFileDescriptor(FileDescriptor orig) 1531 throws IOException; 1532 /*package*/ static native void closeFileDescriptor(FileDescriptor desc) 1533 throws IOException; 1534 /*package*/ static native void clearFileDescriptor(FileDescriptor desc); 1535 1536 /** 1537 * Read a byte value from the parcel at the current dataPosition(). 1538 */ 1539 public final byte readByte() { 1540 return (byte)(readInt() & 0xff); 1541 } 1542 1543 /** 1544 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1545 * been written with {@link #writeBundle}. Read into an existing Map object 1546 * from the parcel at the current dataPosition(). 1547 */ 1548 public final void readMap(Map outVal, ClassLoader loader) { 1549 int N = readInt(); 1550 readMapInternal(outVal, N, loader); 1551 } 1552 1553 /** 1554 * Read into an existing List object from the parcel at the current 1555 * dataPosition(), using the given class loader to load any enclosed 1556 * Parcelables. If it is null, the default class loader is used. 1557 */ 1558 public final void readList(List outVal, ClassLoader loader) { 1559 int N = readInt(); 1560 readListInternal(outVal, N, loader); 1561 } 1562 1563 /** 1564 * Please use {@link #readBundle(ClassLoader)} instead (whose data must have 1565 * been written with {@link #writeBundle}. Read and return a new HashMap 1566 * object from the parcel at the current dataPosition(), using the given 1567 * class loader to load any enclosed Parcelables. Returns null if 1568 * the previously written map object was null. 1569 */ 1570 public final HashMap readHashMap(ClassLoader loader) 1571 { 1572 int N = readInt(); 1573 if (N < 0) { 1574 return null; 1575 } 1576 HashMap m = new HashMap(N); 1577 readMapInternal(m, N, loader); 1578 return m; 1579 } 1580 1581 /** 1582 * Read and return a new Bundle object from the parcel at the current 1583 * dataPosition(). Returns null if the previously written Bundle object was 1584 * null. 1585 */ 1586 public final Bundle readBundle() { 1587 return readBundle(null); 1588 } 1589 1590 /** 1591 * Read and return a new Bundle object from the parcel at the current 1592 * dataPosition(), using the given class loader to initialize the class 1593 * loader of the Bundle for later retrieval of Parcelable objects. 1594 * Returns null if the previously written Bundle object was null. 1595 */ 1596 public final Bundle readBundle(ClassLoader loader) { 1597 int length = readInt(); 1598 if (length < 0) { 1599 return null; 1600 } 1601 1602 final Bundle bundle = new Bundle(this, length); 1603 if (loader != null) { 1604 bundle.setClassLoader(loader); 1605 } 1606 return bundle; 1607 } 1608 1609 /** 1610 * Read and return a byte[] object from the parcel. 1611 */ 1612 public final byte[] createByteArray() { 1613 return nativeCreateByteArray(mNativePtr); 1614 } 1615 1616 /** 1617 * Read a byte[] object from the parcel and copy it into the 1618 * given byte array. 1619 */ 1620 public final void readByteArray(byte[] val) { 1621 // TODO: make this a native method to avoid the extra copy. 1622 byte[] ba = createByteArray(); 1623 if (ba.length == val.length) { 1624 System.arraycopy(ba, 0, val, 0, ba.length); 1625 } else { 1626 throw new RuntimeException("bad array lengths"); 1627 } 1628 } 1629 1630 /** 1631 * Read and return a String[] object from the parcel. 1632 * {@hide} 1633 */ 1634 public final String[] readStringArray() { 1635 String[] array = null; 1636 1637 int length = readInt(); 1638 if (length >= 0) 1639 { 1640 array = new String[length]; 1641 1642 for (int i = 0 ; i < length ; i++) 1643 { 1644 array[i] = readString(); 1645 } 1646 } 1647 1648 return array; 1649 } 1650 1651 /** 1652 * Read and return a CharSequence[] object from the parcel. 1653 * {@hide} 1654 */ 1655 public final CharSequence[] readCharSequenceArray() { 1656 CharSequence[] array = null; 1657 1658 int length = readInt(); 1659 if (length >= 0) 1660 { 1661 array = new CharSequence[length]; 1662 1663 for (int i = 0 ; i < length ; i++) 1664 { 1665 array[i] = readCharSequence(); 1666 } 1667 } 1668 1669 return array; 1670 } 1671 1672 /** 1673 * Read and return a new ArrayList object from the parcel at the current 1674 * dataPosition(). Returns null if the previously written list object was 1675 * null. The given class loader will be used to load any enclosed 1676 * Parcelables. 1677 */ 1678 public final ArrayList readArrayList(ClassLoader loader) { 1679 int N = readInt(); 1680 if (N < 0) { 1681 return null; 1682 } 1683 ArrayList l = new ArrayList(N); 1684 readListInternal(l, N, loader); 1685 return l; 1686 } 1687 1688 /** 1689 * Read and return a new Object array from the parcel at the current 1690 * dataPosition(). Returns null if the previously written array was 1691 * null. The given class loader will be used to load any enclosed 1692 * Parcelables. 1693 */ 1694 public final Object[] readArray(ClassLoader loader) { 1695 int N = readInt(); 1696 if (N < 0) { 1697 return null; 1698 } 1699 Object[] l = new Object[N]; 1700 readArrayInternal(l, N, loader); 1701 return l; 1702 } 1703 1704 /** 1705 * Read and return a new SparseArray object from the parcel at the current 1706 * dataPosition(). Returns null if the previously written list object was 1707 * null. The given class loader will be used to load any enclosed 1708 * Parcelables. 1709 */ 1710 public final SparseArray readSparseArray(ClassLoader loader) { 1711 int N = readInt(); 1712 if (N < 0) { 1713 return null; 1714 } 1715 SparseArray sa = new SparseArray(N); 1716 readSparseArrayInternal(sa, N, loader); 1717 return sa; 1718 } 1719 1720 /** 1721 * Read and return a new SparseBooleanArray object from the parcel at the current 1722 * dataPosition(). Returns null if the previously written list object was 1723 * null. 1724 */ 1725 public final SparseBooleanArray readSparseBooleanArray() { 1726 int N = readInt(); 1727 if (N < 0) { 1728 return null; 1729 } 1730 SparseBooleanArray sa = new SparseBooleanArray(N); 1731 readSparseBooleanArrayInternal(sa, N); 1732 return sa; 1733 } 1734 1735 /** 1736 * Read and return a new ArrayList containing a particular object type from 1737 * the parcel that was written with {@link #writeTypedList} at the 1738 * current dataPosition(). Returns null if the 1739 * previously written list object was null. The list <em>must</em> have 1740 * previously been written via {@link #writeTypedList} with the same object 1741 * type. 1742 * 1743 * @return A newly created ArrayList containing objects with the same data 1744 * as those that were previously written. 1745 * 1746 * @see #writeTypedList 1747 */ 1748 public final <T> ArrayList<T> createTypedArrayList(Parcelable.Creator<T> c) { 1749 int N = readInt(); 1750 if (N < 0) { 1751 return null; 1752 } 1753 ArrayList<T> l = new ArrayList<T>(N); 1754 while (N > 0) { 1755 if (readInt() != 0) { 1756 l.add(c.createFromParcel(this)); 1757 } else { 1758 l.add(null); 1759 } 1760 N--; 1761 } 1762 return l; 1763 } 1764 1765 /** 1766 * Read into the given List items containing a particular object type 1767 * that were written with {@link #writeTypedList} at the 1768 * current dataPosition(). The list <em>must</em> have 1769 * previously been written via {@link #writeTypedList} with the same object 1770 * type. 1771 * 1772 * @return A newly created ArrayList containing objects with the same data 1773 * as those that were previously written. 1774 * 1775 * @see #writeTypedList 1776 */ 1777 public final <T> void readTypedList(List<T> list, Parcelable.Creator<T> c) { 1778 int M = list.size(); 1779 int N = readInt(); 1780 int i = 0; 1781 for (; i < M && i < N; i++) { 1782 if (readInt() != 0) { 1783 list.set(i, c.createFromParcel(this)); 1784 } else { 1785 list.set(i, null); 1786 } 1787 } 1788 for (; i<N; i++) { 1789 if (readInt() != 0) { 1790 list.add(c.createFromParcel(this)); 1791 } else { 1792 list.add(null); 1793 } 1794 } 1795 for (; i<M; i++) { 1796 list.remove(N); 1797 } 1798 } 1799 1800 /** 1801 * Read and return a new ArrayList containing String objects from 1802 * the parcel that was written with {@link #writeStringList} at the 1803 * current dataPosition(). Returns null if the 1804 * previously written list object was null. 1805 * 1806 * @return A newly created ArrayList containing strings with the same data 1807 * as those that were previously written. 1808 * 1809 * @see #writeStringList 1810 */ 1811 public final ArrayList<String> createStringArrayList() { 1812 int N = readInt(); 1813 if (N < 0) { 1814 return null; 1815 } 1816 ArrayList<String> l = new ArrayList<String>(N); 1817 while (N > 0) { 1818 l.add(readString()); 1819 N--; 1820 } 1821 return l; 1822 } 1823 1824 /** 1825 * Read and return a new ArrayList containing IBinder objects from 1826 * the parcel that was written with {@link #writeBinderList} at the 1827 * current dataPosition(). Returns null if the 1828 * previously written list object was null. 1829 * 1830 * @return A newly created ArrayList containing strings with the same data 1831 * as those that were previously written. 1832 * 1833 * @see #writeBinderList 1834 */ 1835 public final ArrayList<IBinder> createBinderArrayList() { 1836 int N = readInt(); 1837 if (N < 0) { 1838 return null; 1839 } 1840 ArrayList<IBinder> l = new ArrayList<IBinder>(N); 1841 while (N > 0) { 1842 l.add(readStrongBinder()); 1843 N--; 1844 } 1845 return l; 1846 } 1847 1848 /** 1849 * Read into the given List items String objects that were written with 1850 * {@link #writeStringList} at the current dataPosition(). 1851 * 1852 * @return A newly created ArrayList containing strings with the same data 1853 * as those that were previously written. 1854 * 1855 * @see #writeStringList 1856 */ 1857 public final void readStringList(List<String> list) { 1858 int M = list.size(); 1859 int N = readInt(); 1860 int i = 0; 1861 for (; i < M && i < N; i++) { 1862 list.set(i, readString()); 1863 } 1864 for (; i<N; i++) { 1865 list.add(readString()); 1866 } 1867 for (; i<M; i++) { 1868 list.remove(N); 1869 } 1870 } 1871 1872 /** 1873 * Read into the given List items IBinder objects that were written with 1874 * {@link #writeBinderList} at the current dataPosition(). 1875 * 1876 * @return A newly created ArrayList containing strings with the same data 1877 * as those that were previously written. 1878 * 1879 * @see #writeBinderList 1880 */ 1881 public final void readBinderList(List<IBinder> list) { 1882 int M = list.size(); 1883 int N = readInt(); 1884 int i = 0; 1885 for (; i < M && i < N; i++) { 1886 list.set(i, readStrongBinder()); 1887 } 1888 for (; i<N; i++) { 1889 list.add(readStrongBinder()); 1890 } 1891 for (; i<M; i++) { 1892 list.remove(N); 1893 } 1894 } 1895 1896 /** 1897 * Read and return a new array containing a particular object type from 1898 * the parcel at the current dataPosition(). Returns null if the 1899 * previously written array was null. The array <em>must</em> have 1900 * previously been written via {@link #writeTypedArray} with the same 1901 * object type. 1902 * 1903 * @return A newly created array containing objects with the same data 1904 * as those that were previously written. 1905 * 1906 * @see #writeTypedArray 1907 */ 1908 public final <T> T[] createTypedArray(Parcelable.Creator<T> c) { 1909 int N = readInt(); 1910 if (N < 0) { 1911 return null; 1912 } 1913 T[] l = c.newArray(N); 1914 for (int i=0; i<N; i++) { 1915 if (readInt() != 0) { 1916 l[i] = c.createFromParcel(this); 1917 } 1918 } 1919 return l; 1920 } 1921 1922 public final <T> void readTypedArray(T[] val, Parcelable.Creator<T> c) { 1923 int N = readInt(); 1924 if (N == val.length) { 1925 for (int i=0; i<N; i++) { 1926 if (readInt() != 0) { 1927 val[i] = c.createFromParcel(this); 1928 } else { 1929 val[i] = null; 1930 } 1931 } 1932 } else { 1933 throw new RuntimeException("bad array lengths"); 1934 } 1935 } 1936 1937 /** 1938 * @deprecated 1939 * @hide 1940 */ 1941 @Deprecated 1942 public final <T> T[] readTypedArray(Parcelable.Creator<T> c) { 1943 return createTypedArray(c); 1944 } 1945 1946 /** 1947 * Write a heterogeneous array of Parcelable objects into the Parcel. 1948 * Each object in the array is written along with its class name, so 1949 * that the correct class can later be instantiated. As a result, this 1950 * has significantly more overhead than {@link #writeTypedArray}, but will 1951 * correctly handle an array containing more than one type of object. 1952 * 1953 * @param value The array of objects to be written. 1954 * @param parcelableFlags Contextual flags as per 1955 * {@link Parcelable#writeToParcel(Parcel, int) Parcelable.writeToParcel()}. 1956 * 1957 * @see #writeTypedArray 1958 */ 1959 public final <T extends Parcelable> void writeParcelableArray(T[] value, 1960 int parcelableFlags) { 1961 if (value != null) { 1962 int N = value.length; 1963 writeInt(N); 1964 for (int i=0; i<N; i++) { 1965 writeParcelable(value[i], parcelableFlags); 1966 } 1967 } else { 1968 writeInt(-1); 1969 } 1970 } 1971 1972 /** 1973 * Read a typed object from a parcel. The given class loader will be 1974 * used to load any enclosed Parcelables. If it is null, the default class 1975 * loader will be used. 1976 */ 1977 public final Object readValue(ClassLoader loader) { 1978 int type = readInt(); 1979 1980 switch (type) { 1981 case VAL_NULL: 1982 return null; 1983 1984 case VAL_STRING: 1985 return readString(); 1986 1987 case VAL_INTEGER: 1988 return readInt(); 1989 1990 case VAL_MAP: 1991 return readHashMap(loader); 1992 1993 case VAL_PARCELABLE: 1994 return readParcelable(loader); 1995 1996 case VAL_SHORT: 1997 return (short) readInt(); 1998 1999 case VAL_LONG: 2000 return readLong(); 2001 2002 case VAL_FLOAT: 2003 return readFloat(); 2004 2005 case VAL_DOUBLE: 2006 return readDouble(); 2007 2008 case VAL_BOOLEAN: 2009 return readInt() == 1; 2010 2011 case VAL_CHARSEQUENCE: 2012 return readCharSequence(); 2013 2014 case VAL_LIST: 2015 return readArrayList(loader); 2016 2017 case VAL_BOOLEANARRAY: 2018 return createBooleanArray(); 2019 2020 case VAL_BYTEARRAY: 2021 return createByteArray(); 2022 2023 case VAL_STRINGARRAY: 2024 return readStringArray(); 2025 2026 case VAL_CHARSEQUENCEARRAY: 2027 return readCharSequenceArray(); 2028 2029 case VAL_IBINDER: 2030 return readStrongBinder(); 2031 2032 case VAL_OBJECTARRAY: 2033 return readArray(loader); 2034 2035 case VAL_INTARRAY: 2036 return createIntArray(); 2037 2038 case VAL_LONGARRAY: 2039 return createLongArray(); 2040 2041 case VAL_BYTE: 2042 return readByte(); 2043 2044 case VAL_SERIALIZABLE: 2045 return readSerializable(); 2046 2047 case VAL_PARCELABLEARRAY: 2048 return readParcelableArray(loader); 2049 2050 case VAL_SPARSEARRAY: 2051 return readSparseArray(loader); 2052 2053 case VAL_SPARSEBOOLEANARRAY: 2054 return readSparseBooleanArray(); 2055 2056 case VAL_BUNDLE: 2057 return readBundle(loader); // loading will be deferred 2058 2059 default: 2060 int off = dataPosition() - 4; 2061 throw new RuntimeException( 2062 "Parcel " + this + ": Unmarshalling unknown type code " + type + " at offset " + off); 2063 } 2064 } 2065 2066 /** 2067 * Read and return a new Parcelable from the parcel. The given class loader 2068 * will be used to load any enclosed Parcelables. If it is null, the default 2069 * class loader will be used. 2070 * @param loader A ClassLoader from which to instantiate the Parcelable 2071 * object, or null for the default class loader. 2072 * @return Returns the newly created Parcelable, or null if a null 2073 * object has been written. 2074 * @throws BadParcelableException Throws BadParcelableException if there 2075 * was an error trying to instantiate the Parcelable. 2076 */ 2077 public final <T extends Parcelable> T readParcelable(ClassLoader loader) { 2078 Parcelable.Creator<T> creator = readParcelableCreator(loader); 2079 if (creator == null) { 2080 return null; 2081 } 2082 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2083 return ((Parcelable.ClassLoaderCreator<T>)creator).createFromParcel(this, loader); 2084 } 2085 return creator.createFromParcel(this); 2086 } 2087 2088 /** @hide */ 2089 public final <T extends Parcelable> T readCreator(Parcelable.Creator<T> creator, 2090 ClassLoader loader) { 2091 if (creator instanceof Parcelable.ClassLoaderCreator<?>) { 2092 return ((Parcelable.ClassLoaderCreator<T>)creator).createFromParcel(this, loader); 2093 } 2094 return creator.createFromParcel(this); 2095 } 2096 2097 /** @hide */ 2098 public final <T extends Parcelable> Parcelable.Creator<T> readParcelableCreator( 2099 ClassLoader loader) { 2100 String name = readString(); 2101 if (name == null) { 2102 return null; 2103 } 2104 Parcelable.Creator<T> creator; 2105 synchronized (mCreators) { 2106 HashMap<String,Parcelable.Creator> map = mCreators.get(loader); 2107 if (map == null) { 2108 map = new HashMap<String,Parcelable.Creator>(); 2109 mCreators.put(loader, map); 2110 } 2111 creator = map.get(name); 2112 if (creator == null) { 2113 try { 2114 Class c = loader == null ? 2115 Class.forName(name) : Class.forName(name, true, loader); 2116 Field f = c.getField("CREATOR"); 2117 creator = (Parcelable.Creator)f.get(null); 2118 } 2119 catch (IllegalAccessException e) { 2120 Log.e(TAG, "Illegal access when unmarshalling: " 2121 + name, e); 2122 throw new BadParcelableException( 2123 "IllegalAccessException when unmarshalling: " + name); 2124 } 2125 catch (ClassNotFoundException e) { 2126 Log.e(TAG, "Class not found when unmarshalling: " 2127 + name, e); 2128 throw new BadParcelableException( 2129 "ClassNotFoundException when unmarshalling: " + name); 2130 } 2131 catch (ClassCastException e) { 2132 throw new BadParcelableException("Parcelable protocol requires a " 2133 + "Parcelable.Creator object called " 2134 + " CREATOR on class " + name); 2135 } 2136 catch (NoSuchFieldException e) { 2137 throw new BadParcelableException("Parcelable protocol requires a " 2138 + "Parcelable.Creator object called " 2139 + " CREATOR on class " + name); 2140 } 2141 catch (NullPointerException e) { 2142 throw new BadParcelableException("Parcelable protocol requires " 2143 + "the CREATOR object to be static on class " + name); 2144 } 2145 if (creator == null) { 2146 throw new BadParcelableException("Parcelable protocol requires a " 2147 + "Parcelable.Creator object called " 2148 + " CREATOR on class " + name); 2149 } 2150 2151 map.put(name, creator); 2152 } 2153 } 2154 2155 return creator; 2156 } 2157 2158 /** 2159 * Read and return a new Parcelable array from the parcel. 2160 * The given class loader will be used to load any enclosed 2161 * Parcelables. 2162 * @return the Parcelable array, or null if the array is null 2163 */ 2164 public final Parcelable[] readParcelableArray(ClassLoader loader) { 2165 int N = readInt(); 2166 if (N < 0) { 2167 return null; 2168 } 2169 Parcelable[] p = new Parcelable[N]; 2170 for (int i = 0; i < N; i++) { 2171 p[i] = (Parcelable) readParcelable(loader); 2172 } 2173 return p; 2174 } 2175 2176 /** 2177 * Read and return a new Serializable object from the parcel. 2178 * @return the Serializable object, or null if the Serializable name 2179 * wasn't found in the parcel. 2180 */ 2181 public final Serializable readSerializable() { 2182 String name = readString(); 2183 if (name == null) { 2184 // For some reason we were unable to read the name of the Serializable (either there 2185 // is nothing left in the Parcel to read, or the next value wasn't a String), so 2186 // return null, which indicates that the name wasn't found in the parcel. 2187 return null; 2188 } 2189 2190 byte[] serializedData = createByteArray(); 2191 ByteArrayInputStream bais = new ByteArrayInputStream(serializedData); 2192 try { 2193 ObjectInputStream ois = new ObjectInputStream(bais); 2194 return (Serializable) ois.readObject(); 2195 } catch (IOException ioe) { 2196 throw new RuntimeException("Parcelable encountered " + 2197 "IOException reading a Serializable object (name = " + name + 2198 ")", ioe); 2199 } catch (ClassNotFoundException cnfe) { 2200 throw new RuntimeException("Parcelable encountered" + 2201 "ClassNotFoundException reading a Serializable object (name = " 2202 + name + ")", cnfe); 2203 } 2204 } 2205 2206 // Cache of previously looked up CREATOR.createFromParcel() methods for 2207 // particular classes. Keys are the names of the classes, values are 2208 // Method objects. 2209 private static final HashMap<ClassLoader,HashMap<String,Parcelable.Creator>> 2210 mCreators = new HashMap<ClassLoader,HashMap<String,Parcelable.Creator>>(); 2211 2212 static protected final Parcel obtain(int obj) { 2213 final Parcel[] pool = sHolderPool; 2214 synchronized (pool) { 2215 Parcel p; 2216 for (int i=0; i<POOL_SIZE; i++) { 2217 p = pool[i]; 2218 if (p != null) { 2219 pool[i] = null; 2220 if (DEBUG_RECYCLE) { 2221 p.mStack = new RuntimeException(); 2222 } 2223 p.init(obj); 2224 return p; 2225 } 2226 } 2227 } 2228 return new Parcel(obj); 2229 } 2230 2231 private Parcel(int nativePtr) { 2232 if (DEBUG_RECYCLE) { 2233 mStack = new RuntimeException(); 2234 } 2235 //Log.i(TAG, "Initializing obj=0x" + Integer.toHexString(obj), mStack); 2236 init(nativePtr); 2237 } 2238 2239 private void init(int nativePtr) { 2240 if (nativePtr != 0) { 2241 mNativePtr = nativePtr; 2242 mOwnsNativeParcelObject = false; 2243 } else { 2244 mNativePtr = nativeCreate(); 2245 mOwnsNativeParcelObject = true; 2246 } 2247 } 2248 2249 private void freeBuffer() { 2250 if (mOwnsNativeParcelObject) { 2251 nativeFreeBuffer(mNativePtr); 2252 } 2253 } 2254 2255 private void destroy() { 2256 if (mNativePtr != 0) { 2257 if (mOwnsNativeParcelObject) { 2258 nativeDestroy(mNativePtr); 2259 } 2260 mNativePtr = 0; 2261 } 2262 } 2263 2264 @Override 2265 protected void finalize() throws Throwable { 2266 if (DEBUG_RECYCLE) { 2267 if (mStack != null) { 2268 Log.w(TAG, "Client did not call Parcel.recycle()", mStack); 2269 } 2270 } 2271 destroy(); 2272 } 2273 2274 /* package */ void readMapInternal(Map outVal, int N, 2275 ClassLoader loader) { 2276 while (N > 0) { 2277 Object key = readValue(loader); 2278 Object value = readValue(loader); 2279 outVal.put(key, value); 2280 N--; 2281 } 2282 } 2283 2284 /* package */ void readArrayMapInternal(ArrayMap outVal, int N, 2285 ClassLoader loader) { 2286 while (N > 0) { 2287 Object key = readValue(loader); 2288 Object value = readValue(loader); 2289 outVal.append(key, value); 2290 N--; 2291 } 2292 } 2293 2294 private void readListInternal(List outVal, int N, 2295 ClassLoader loader) { 2296 while (N > 0) { 2297 Object value = readValue(loader); 2298 //Log.d(TAG, "Unmarshalling value=" + value); 2299 outVal.add(value); 2300 N--; 2301 } 2302 } 2303 2304 private void readArrayInternal(Object[] outVal, int N, 2305 ClassLoader loader) { 2306 for (int i = 0; i < N; i++) { 2307 Object value = readValue(loader); 2308 //Log.d(TAG, "Unmarshalling value=" + value); 2309 outVal[i] = value; 2310 } 2311 } 2312 2313 private void readSparseArrayInternal(SparseArray outVal, int N, 2314 ClassLoader loader) { 2315 while (N > 0) { 2316 int key = readInt(); 2317 Object value = readValue(loader); 2318 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2319 outVal.append(key, value); 2320 N--; 2321 } 2322 } 2323 2324 2325 private void readSparseBooleanArrayInternal(SparseBooleanArray outVal, int N) { 2326 while (N > 0) { 2327 int key = readInt(); 2328 boolean value = this.readByte() == 1; 2329 //Log.i(TAG, "Unmarshalling key=" + key + " value=" + value); 2330 outVal.append(key, value); 2331 N--; 2332 } 2333 } 2334} 2335