1. android:configChanges

在Android中每次屏幕的切换动会重启Activity，所以应该在Activity销毁前保存当前活动的状态，在Activity再次Create的时候载入配置。在activity加上android:configChanges="keyboardHidden|orientation"属性,就不会重启activity.而只是调用onConfigurationChanged(Configuration newConfig).这样就可以在这个方法里调整显示方式.

public void onConfigurationChanged(Configuration newConfig) {    
        try {    
            super.onConfigurationChanged(newConfig);    
            if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {    
                Log.v("Himi","onConfigurationChanged_ORIENTATION_LANDSCAPE");    
            } else if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {    
                Log.v("Himi","onConfigurationChanged_ORIENTATION_PORTRAIT");    
            }    
        } catch (Exception ex) {    
        }    
    }  

2.android:screenOrientation

landscape横向 protrait竖直