请教大家一个通过反编译android代码的还原

请教大家一个通过反编译代码的还原方法
此code是通过dex2jar工具从android的classes.dex反编译过来的，然后使用jd打开的：
 public Bitmap getBitmap(Context paramContext, byte[] paramArrayOfByte)
  {
  monitorenter;
  try
  {
  long l = hash(paramArrayOfByte);
  int i = getIndex(l);
  BitmapDataArray.ByteBufferDescription localByteBufferDescription1 = ((BitmapDataArray)this._dataArray).getByteBuffer(i);
  int j = getIndex(l);
  Object localObject1;
  if (i == j)
  {
  if (localByteBufferDescription1 != null)
  break label73;
  _log.error("getBitmap() existingData is null!");
  localObject1 = null;
  }
  while (true)
  {
  return localObject1;
  i = j;
  break;
  label73: String str1 = new String(paramArrayOfByte);
  if (localByteBufferDescription1.len <= 0)
  {
  _log.error("ByteBuffer is messed up!!!!!!");
  Logger localLogger = _log;
  StringBuilder localStringBuilder1 = new StringBuilder().append("position after return remaining=");
  int k = localByteBufferDescription1.buffer.remaining();
  StringBuilder localStringBuilder2 = localStringBuilder1.append(k).append(" startOffset=");
  int m = localByteBufferDescription1.startOffset;
  StringBuilder localStringBuilder3 = localStringBuilder2.append(m).append(" len=");
  int n = localByteBufferDescription1.len;
  String str2 = n;
  localLogger.error(str2);
  int i1 = localByteBufferDescription1.len / 0;
  }
  DefaultDataStoreHandler localDefaultDataStoreHandler = this._dataHandler;
  ByteBuffer localByteBuffer1 = localByteBufferDescription1.buffer;
  int i2 = localByteBufferDescription1.startOffset;
  int i3 = localByteBufferDescription1.len;
  BitmapDataArray.ByteBufferDescription localByteBufferDescription2 = localDefaultDataStoreHandler.movePositionByKey(paramArrayOfByte, localByteBuffer1, i2, i3);
  if (localByteBufferDescription2 == null)
  {
  _log.error("getBitmap() desc buffer description is null after moving for key!!!!!!");
  localObject1 = null;
  continue;
  }
  ByteBuffer localByteBuffer2 = localByteBufferDescription2.buffer;
  int i4 = localByteBufferDescription2.startOffset;
  int i5 = localByteBufferDescription2.len;
  Bitmap localBitmap = buildBitmapFromByteBuffer(paramContext, localByteBuffer2, i4, i5);
  localObject1 = localBitmap;
  }
  }
  finally
  {
  monitorexit;
  }
  throw localObject2;
  }

同求！！！

到android版块去问吧、