activity生命周期

来源：互联网发布：物联传感知乎编辑：程序博客网时间：2024/05/16 17:24

onCreate(): 初始化
onStart(): 可见
onResume(): 获得焦点
onPause(): 失去焦点
onStop(): 不可见
onRestart(): 重新可见
onDestroy(): 销毁

public class LifeCycleActivity extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);         Toast.makeText(LifeCycleActivity.this,"ON CREATE", Toast.LENGTH_SHORT).show();     }     @Override    protected void onStart() {       // TODO Auto-generated method stub       super.onStart();         Toast.makeText(LifeCycleActivity.this,"ON START", Toast.LENGTH_SHORT).show();    }     @Override    protected void onResume() {       // TODO Auto-generated method stub       super.onResume();         Toast.makeText(LifeCycleActivity.this,"ON RESUME", Toast.LENGTH_SHORT).show();     }     @Override    protected void onPause() {       // TODO Auto-generated method stub       super.onPause();         Toast.makeText(LifeCycleActivity.this,"ON PAUSE", Toast.LENGTH_SHORT).show();     }     @Override    protected void onRestart() {       // TODO Auto-generated method stub       super.onRestart();         Toast.makeText(LifeCycleActivity.this,"ON RESTART", Toast.LENGTH_SHORT).show();     }     @Override    protected void onStop() {       // TODO Auto-generated method stub       super.onStop();         Toast.makeText(LifeCycleActivity.this,"ON STOP", Toast.LENGTH_SHORT).show();     }     @Override    protected void onDestroy() {       // TODO Auto-generated method stub       super.onDestroy();         Toast.makeText(LifeCycleActivity.this,"ON DESTROY", Toast.LENGTH_SHORT).show();    } }

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