Android Handler防止内存溢出的写法

static class MyHandler extends Handler {
        private WeakReference<Context> weakReference;
        public MyHandler(Context context) {
            weakReference = new WeakReference<>(context);
        }
        @Override
        public void handleMessage(Message msg) {
            XXActivity activity = (XXActivity) weakReference.get();
            if (activity != null) {
                activity.textView.setText(result);
            }
        }
    }