Android生命周期

代码：

    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Log.e("TAG", "onCreate");    }    @Override    protected void onRestart() {        super.onRestart();        Log.e("TAG", "onRestart");    }    @Override    protected void onStart() {        super.onStart();        Log.e("TAG", "onStart");    }    @Override    protected void onResume() {        super.onResume();        Log.e("TAG", "onResume");    }    @Override    protected void onPause() {        super.onPause();        Log.e("TAG", "onPause");    }    @Override    protected void onStop() {        super.onStop();        Log.e("TAG", "onStop");    }    @Override    protected void onDestroy() {        super.onDestroy();        Log.e("TAG", "onDestroy");    }

1、启动应用

2、锁屏

3、解锁

4、跳转到另一个Activity

5、返回第一个Activity

6、进入后台杀死应用进程

7、退出应用