Bitmap -- Drawable
1: BitmapDrawable bd= new BitmapDrawable(bitmap)
Bitmap -- byte[]
1: private byte[] bitmap2Bytes(Bitmap bitmap) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos); return baos.toByteArray(); }
Drawable -- Bitmap
1: Bitmap bitmap = ((BitmapDrawable) getResources().getDrawable(R.drawable.icon)).getBitmap(); 2: private Bitmap drawable2Bitmap(Drawable drawable) { Bitmap bitmap = Bitmap.createBitmap( drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); drawable.draw(canvas); return bitmap; }
byte[] -- Bitmap
1: public Bitmap bytes2Bimap(byte[] bytes) { if (bytes.length != 0) { return BitmapFactory.decodeByteArray(bytes, 0, bytes.length); } else { return null; } }