[android] Bitmap을 Drawable로 변환 또는 Drawable을 Bitmap으로 변환

Bitmap -> Drawable 로 변환

BitmapDrawable bitmapDrawable = (BitmapDrawable)bitmap;

Drawable drawable = (Drawable)bitmapDrawable;

Bitmap bitmap = new Bitmap (...);

Drawable drawable = new BitmapDrawable(bitmap);

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Drawable -> Bitmap 으로 변환

Bitmap bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);

Canvas canvas = new Canvas(bitmap);

drawable.setBounds(0, 0, w, h);

drawable.draw(canvas);