android 把图片状态由彩色变成灰色
16lz
2022-05-25
public static final Bitmap grey(Bitmap bitmap) { int width = bitmap.getWidth(); int height = bitmap.getHeight(); Bitmap faceIconGreyBitmap = Bitmap .createBitmap(width, height, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(faceIconGreyBitmap); Paint paint = new Paint(); ColorMatrix colorMatrix = new ColorMatrix(); colorMatrix.setSaturation(0); ColorMatrixColorFilter colorMatrixFilter = new ColorMatrixColorFilter( colorMatrix); paint.setColorFilter(colorMatrixFilter); canvas.drawBitmap(bitmap, 0, 0, paint); return faceIconGreyBitmap; }
转自:http://blog.csdn.net/guotong1988/article/details/7955196
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