Android屏幕旋转与acticity生命周期

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  1. 设置 android:configChanges="orientation"和不设置这个属性，生命周期表现为重新创建activity

  2. 设置 android:configChanges="orientation|keyboardHidden"，在2.3上表现为不重新创建activity，5.1如下

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android:targetSdkVersion<=“12”//生命周期表现为不重新创建activity
android:targetSdkVersion>”12”//表现为重新创建activity
  1. 设置 android:configChanges="orientation|keyboardHidden|screenSize"，在2.3和5.1上都表现为不重新创建，在屏幕旋转时，只会调用onConfigurationChanged方法

测试代码：

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public class MainActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);
	    setContentView(R.layout.relative_center_2);
	    Log.i("MainActivity", "执行onCreate方法");
	}
	
	@Override
	protected void onStart() {
	    super.onStart();
	    Log.i("MainActivity", "执行onStart方法");
	}
	
	@Override
	protected void onResume() {
	    super.onResume();
	    Log.i("MainActivity", "执行onResume方法");
	}
	
	@Override
	protected void onPause() {
	    super.onPause();
	    Log.i("MainActivity", "执行onPause方法");
	}
	
	@Override
	protected void onStop() {
	    super.onStop();
	    Log.i("MainActivity", "执行onStop方法");
	}
	
	@Override
	protected void onDestroy() {
	    super.onDestroy();
	    Log.i("MainActivity", "执行onDestroy方法");
	}
	
	@Override
	public void onConfigurationChanged(Configuration newConfig) {
	    super.onConfigurationChanged(newConfig);
	    Log.i("MainActivity", "执行onConfigurationChanged方法");
	}
	
	@Override
	protected void onRestart() {
	    super.onRestart();
	    Log.i("MainActivity", "执行onRestart方法");
	}
	
	@Override
	protected void onSaveInstanceState(Bundle outState) {
	    super.onSaveInstanceState(outState);
	    Log.i("MainActivity", "执行onSaveInstanceState方法");
	}
	
	@Override
	protected void onRestoreInstanceState(Bundle savedInstanceState) {
	    super.onRestoreInstanceState(savedInstanceState);
	    Log.i("MainActivity", "执行onRestoreInstanceState方法");
	}
}