关于App 黑白化

 App 黑白化实现,记录一下,怕以后遇到半天找不着.

在MyApplication里initLifecycle()即可.

private void initLifecycle() {
    registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
        @Override
        public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
        }

        @Override
        public void onActivityStarted(Activity activity) {
            //关键代码,这五行也可以放在BaseActivity里也行
            Paint paint = new Paint();
            ColorMatrix cm = new ColorMatrix();
            cm.setSaturation(0);
            paint.setColorFilter(new ColorMatrixColorFilter(cm));
            activity.getWindow().getDecorView().setLayerType(View.LAYER_TYPE_HARDWARE, paint);
        }

        @Override
        public void onActivityResumed(Activity activity) {
        }

        @Override
        public void onActivityPaused(Activity activity) {
        }

        @Override
        public void onActivityStopped(Activity activity) {
        }

        @Override
        public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
        }

        @Override
        public void onActivityDestroyed(Activity activity) {
        }
    });
}