Android Activity的生命周期

学习Android不学习生命周期估计以后也不好混，原来学习ASP.,NET的时候发现有生命周期挺蛋疼的，不过还好Android Activity的生命周期比ASP.NET应用程序生命周期相对来说好理解一点,参考了Google的API，还有中文的博客的，加上自己一点见解，初学Android，高手可以忽略我~

首先看一张很经典的图片:

Activity继承了ApplicationContext，转到定义，可以重写一下方法:

* public class Activity extends ApplicationContext {
*     protected void onCreate(Bundle savedInstanceState);
*
*     protected void onStart();
*     
*     protected void onRestart();
*
*     protected void onResume();
*
*     protected void onPause();
*
*     protected void onStop();
*
*     protected void onDestroy();
* }

　新建了一个Lifecycle项目，MainActivity中重写以上方法:

public class MainActivity extends Activity {
 
    private static final String TAG = "com.example.lifecycle";
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.i(TAG, "生命周期Create");
    }
     
    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Log.i(TAG, "生命周期Start");
    }
    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        Log.i(TAG, "生命周期Resume");
    }
    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        Log.i(TAG,"生命周期Pause");
    }
    @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
        Log.i(TAG,"生命周期Stop");
    }
    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Log.i(TAG,"生命周期Destroy");
    }
    @Override
    protected void onRestart() {
        // TODO Auto-generated method stub
        super.onRestart();
        Log.i(TAG,"生命周期Restart");
    }
    public void test(View view){
        Intent intent=new Intent(this,UserActivity.class);
        startActivity(intent);
    }
}