Android Bit地图，Drawable， byte[]转化

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;		}	}

?

?

?

?