Android 口试之横竖屏切换的Activity生命周期

public class EngineerJspActivity extends Activity {    private static String Tag = "EngineerJspActivity";	@Override	protected void onCreate(Bundle savedInstanceState) { 		super.onCreate(savedInstanceState);		Log.d(Tag, "onCreate()");		setContentView(R.layout.activity_main);	}	@Override	protected void onStart() {		super.onStart();		Log.d(Tag, "onStart()");	}    @Override    protected void onResume() {    	super.onResume();    	Log.d(Tag, "onResume()");    }    @Override    protected void onSaveInstanceState(Bundle outState) {    	super.onSaveInstanceState(outState);    	Log.d(Tag, "onSaveInstanceState()");    }    @Override    protected void onPause() {    	super.onPause();    	Log.d(Tag, "onPause()");    }    @Override    protected void onStop() {    	super.onStop();    	Log.d(Tag, "onStop()");    } @Override    protected void onRestoreInstanceState(Bundle savedInstanceState) {    	super.onRestoreInstanceState(savedInstanceState);    	Log.d(Tag, "onRestoreInstanceState()");    }    @Override    protected void onDestroy() {    	super.onDestroy();    	Log.d(Tag, "onDestroy()");    }}②运行Activity(没有切换屏幕的正常情况下启动Activity)，得到如下结果：
③切换成横屏时的Activity生命周期：
④换回竖屏的Activity生命周期：
⑤给清单文件加上android:configChanges="orientation"属性，重新启动Activity,没有切换屏幕时(正常启动)的生命周期：
⑥加上android:configChanges="orientation"属性，切换成横屏，Activity的生命周期：
⑦加上android:configChanges="orientation"属性，换回竖屏，Activity的生命周期：
⑧加上android:configChanges="orientation"keyboardHidden"属性，正常启动Activity的生命周期(未切屏幕)：
⑨加上android:configChanges="orientation"keyboardHidden"属性，正常启动Activity的生命周期(切成横屏)：
⑩加上android:configChanges="orientation"keyboardHidden"属性，正常启动Activity的生命周期(换回竖屏)：
执行Home键之后的生命周期：