Handler 内存泄漏处理方法

1。我们在开发中应该用到handler更新数据，这是很有可能导致内存泄漏，但我们可以尝试一些弱引用来实现！

 1   private MyHandler myHandler;
 2 //    myHandler = new MyHandler(MainActivity.this); // 实例化
 3     private static class MyHandler extends Handler{
 4         private WeakReference<MainActivity> mReference;
 5 
 6         public MyHandler(MainActivity activity){
 7             this.mReference = new WeakReference<>(activity);
 8         }
 9         @Override
10         public void handleMessage(Message msg) {
11             super.handleMessage(msg);
12             if(mReference != null && mReference.get() != null){
13                 switch (msg.what) {
14                     case 1:
15                         break;
16 
17                 }
18             }
19         }
20     }