android 图片叠加效果实现

方法一：

Bitmap bitmap1 = ((BitmapDrawable) info.icon).getBitmap();Bitmap bitmap2 = ((BitmapDrawable) getResources().getDrawable(R.drawable.ic_assistive_touch_refresh)).getBitmap();Drawable[] array = new Drawable[2];array[0] = new BitmapDrawable(bitmap1);array[1] = new BitmapDrawable(bitmap2);LayerDrawable la = new LayerDrawable(array);ShortcutsSetting.setImageDrawable(la);

方法二：

// 防止出现Immutable bitmap passed to Canvas constructor错误Bitmap bitmap1 = BitmapFactory.decodeResource(getResources(),R.drawable.apple).copy(Bitmap.Config.ARGB_8888, true);Bitmap bitmap2 = ((BitmapDrawable) getResources().getDrawable(R.drawable.go)).getBitmap();Bitmap newBitmap = null;newBitmap = Bitmap.createBitmap(bitmap1);Canvas canvas = new Canvas(newBitmap);Paint paint = new Paint();int w = bitmap1.getWidth();int h = bitmap1.getHeight();int w_2 = bitmap2.getWidth();int h_2 = bitmap2.getHeight();paint.setColor(Color.GRAY);paint.setAlpha(125);canvas.drawRect(0, 0, bitmap1.getWidth(), bitmap1.getHeight(), paint);paint = new Paint();canvas.drawBitmap(bitmap2, Math.abs(w - w_2) / 2,Math.abs(h - h_2) / 2, paint);canvas.save(Canvas.ALL_SAVE_FLAG);// 存储新合成的图片canvas.restore();image.setImageBitmap(newBitmap);

更多相关文章

随机推荐