Android图片二进制与Bitmap、Drawable之间的转换

Java代码 public byte[] getBitmapByte(Bitmap bitmap){ ByteArrayOutputStream out = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out); try { out.flush(); out.close(); } catch (IOException e) { e.printStackTrace(); } return out.toByteArray(); } public Bitmap getBitmapFromByte(byte[] temp){ if(temp != null){ Bitmap bitmap = BitmapFactory.decodeByteArray(temp, 0, temp.length); return bitmap; }else{ return null; } } public byte[] getBitmapByte(Bitmap bitmap){ ByteArrayOutputStream out = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out); try { out.flush(); out.close(); } catch (IOException e) { e.printStackTrace(); } return out.toByteArray(); } public Bitmap getBitmapFromByte(byte[] temp){ if(temp != null){ Bitmap bitmap = BitmapFactory.decodeByteArray(temp, 0, temp.length); return bitmap; }else{ return null; } } Java代码 public static Bitmap drawableToBitmap(Drawable drawable){ int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmap = Bitmap.createBitmap(width, height, drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0,0,width,height); drawable.draw(canvas); return bitmap; } public static Bitmap drawableToBitmap(Drawable drawable){ int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmap = Bitmap.createBitmap(width, height, drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0,0,width,height); drawable.draw(canvas); return bitmap; } Java代码 Drawable drawable = new FastBitmapDrawable(bitmap);