Android 设置黑白滤镜

Posted 2023-02-06 wodongx123

public class GrayUtil 

    public static void setViewGray(@NonNull View view, boolean enableGray) 
        Paint mPaint = new Paint();
        ColorMatrix mColorMatrix = new ColorMatrix();
        // 设置饱和度为0
        mColorMatrix.setSaturation(enableGray ? 0 : 1);
        mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrix));
        view.setLayerType(View.LAYER_TYPE_HARDWARE, mPaint);