Android 横竖屏

AndroidManifest设置横竖屏
	(Activity 节点)	android:screenOrientation="option"
		option = [
				"unspecified"
				"landscape"
				"portrait"
			 ]

代码设置横竖屏
	(Activity) setRequestedOrientation(int requestedOrientation)
	
	android.content.pm.ActivityInfo
			[
				ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
				ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
				ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
			]

备注：Manifest设置了横竖屏属性，在代码中是可以更改的

转屏会调用Activity的onCreate()生命周期方法
禁止onCreate方法的调用要在Manifest中增加android:configChanges="orientation"
Android 3.2(API level 13)以后还要增加 screenSize (android:configChanges="orientation|screenSize")
Activity中对应的调用方法为
@Override
public void onConfigurationChanged(Configuration newConfig) 
{
	super.onConfigurationChanged(newConfig);
}  // 此方法处理一些转屏后的操作

android.content.res.Configuration
[
	Configuration.ORIENTATION_UNDEFINED
	Configuration.ORIENTATION_LANDSCAPE
	Configuration.ORIENTATION_PORTRAIT
]