Android跨进程传递大数据的方法实现

public class ImageData implements Parcelable {
  private byte[] data;
  public byte[] getData() {
    return data;
  }

  public ImageData(byte[] dataIn) {
    this.data = dataIn;
  }

  public ImageData(Parcel in) {
    int arrayLength = in.readInt();
    if (arrayLength > 0) {
      data = new byte[arrayLength];
      in.readByteArray(data);
    }
  }

  @Override
  public void writeToParcel(Parcel dest, int flags) {
    if (data != null && data.length > 0) {
      dest.writeInt(data.length);
      dest.writeByteArray(data);
    } else {
      dest.writeInt(0);
    }
  }
  ...
}

test.aidl
interface test {
  void sendMessage(ImageData data);
}

public class SliceData implements Parcelable {
  private byte[] data;
  private int length;
  ...
}

  public static byte[][] dividearray(byte[] source, int chunkSize) {
    int totalLength = source.length;
    int arraySize = (int) Math.ceil(totalLength / (double) chunkSize);
    byte[][] ret = new byte[arraySize][chunkSize];
    int start = 0;
    int parts = 0;
    for (int i = 0; i < arraySize; i++) {
      if (start + chunkSize > totalLength) {
        System.arraycopy(source, start, ret[i], 0, source.length - start);
      } else {
        System.arraycopy(source, start, ret[i], 0, chunkSize);
      }
      start += chunkSize;
      parts++;
    }
    return ret;
  }

byte[][] divideData = divideArray(testBytes, 64 * 1024);//64k
for (byte[] item : divideData) {
  mEmitter.onNext(new SliceData(length, item));
}

int chunkSize = bytes.length;
if(buffer == null) {
  buffer = new byte[length];
  index = 0;
}
if (index + chunkSize > bodyLength) {//最后一个数据块
  System.arraycopy(bytes, 0, buffer, index, bodyLength - index);
  visualResultData.bitmap = BitmapFactory.decodeByteArray(buffer, 0, buffer.length);
  buffer = null;
  index = 0;
} else {
  System.arraycopy(bytes, 0, buffer, index, chunkSize);
  index += chunkSize;
}

class ImageBinder extends IRemoteGetBitmap.Stub {
  @Override
  public Bitmap getBitMap() throws RemoteException {
    return mBitmap;
  }
}

Bundle bundle = new Bundle();
bundle.putBinder("bitmap", new ImageBinder());
intent.putExtras(bundle);

ImageBinder imageBinder = (ImageBinder) bundle.getBinder("bitmap");
Bitmap bitmap = imageBinder.getBitmap();