ResUtil.java 文件源码

/**
 * 设置View的灰度
 */
public static void setGreyscale(View v, boolean greyscale) {
    if (greyscale) {
        // Create a paint object with 0 saturation (black and white)
        ColorMatrix cm = new ColorMatrix();
        cm.setSaturation(0);
        Paint greyscalePaint = new Paint();
        greyscalePaint.setColorFilter(new ColorMatrixColorFilter(cm));
        // Create a hardware layer with the greyscale paint
        v.setLayerType(LAYER_TYPE_HARDWARE, greyscalePaint);
    } else {
        // Remove the hardware layer
        v.setLayerType(LAYER_TYPE_NONE, null);
    }
}