横竖屏切换导致activity的生命周期变化

1、运行Activity，得到如下信息

onCreate-->onStart-->onResume

3、切换成横屏时

onPause-->onSaveInstanceState-->onStop-->onDestory-->onCreate-->onStart-->onRestoreInstanceState-->onResume

4、再切换成竖屏时

onPause-->onSaveInstanceState-->onStop-->onDestory-->onCreate-->onStart-->onRestoreInstanceState-->onResume

5、修改AndroidManifest.xml，把该Activity添加
Android:configChanges="orientation"，执行步骤3

onConfigChanged-->onPause-->onSaveInstanceState-->onStop-->onDestory-->onCreate-->onStart-->onRestoreInstanceState-->onResume

6、再执行步骤4，发现不会再打印相同信息，只打印了一行onConfigChanged

onConfigurationChanged-->

7、把步骤5的android:configChanges="orientation" 改成 android:configChanges="orientation|keyboardHidden"，执行步骤3，打印onConfigChanged-->onPause-->onSaveInstanceState-->onStop-->onDestory-->onCreate-->onStart-->onRestoreInstanceState-->onResume

8、执行步骤4

onConfigurati
a8e8
onChanged-->

9、把步骤5的android:configChanges="orientation" 改成 android:configChanges="orientation|keyboardHidden|screenSize"，执行步骤3，打印

onConfigurationChanged-->

10.执行步骤4

onConfigurationChanged-->