方法1：禁止旋转屏幕

1. <activity android:name=".MyActivity"
   
2.           android:screenOrientation="portrait"
   
3.           android:label="@string/app_name">

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方法2：旋转后恢复现场

1. @Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);
   
2.     setContentView(R.layout.main);    final MyDataObject data = (MyDataObject) getLastNonConfigurationInstance();    if (data == null) {//表示不是由于Configuration改变触发的onCreate()
   
3.         data = loadMyData();
   
4.     }
   
5.     ...
   
6. }

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方法3：手工处理旋转

1. @Overridepublic void onConfigurationChanged(Configuration newConfig) {    super.onConfigurationChanged(newConfig);
   
2.     // Checks the orientation of the screen
   
3.     if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
   
4.         Toast.makeText(this, "横屏模式", Toast.LENGTH_SHORT).show();
   
5.     } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
   
6.         Toast.makeText(this, "竖屏模式", Toast.LENGTH_SHORT).show();
   
7.     }
   
8. }

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方法1：禁止旋转屏幕

1. <activity android:name=".MyActivity"
   
2.           android:screenOrientation="portrait"
   
3.           android:label="@string/app_name">

复制代码

方法2：旋转后恢复现场

1. @Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);
   
2.     setContentView(R.layout.main);    final MyDataObject data = (MyDataObject) getLastNonConfigurationInstance();    if (data == null) {//表示不是由于Configuration改变触发的onCreate()
   
3.         data = loadMyData();
   
4.     }
   
5.     ...
   
6. }

复制代码

方法3：手工处理旋转

1. @Overridepublic void onConfigurationChanged(Configuration newConfig) {    super.onConfigurationChanged(newConfig);
   
2.     // Checks the orientation of the screen
   
3.     if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
   
4.         Toast.makeText(this, "横屏模式", Toast.LENGTH_SHORT).show();
   
5.     } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
   
6.         Toast.makeText(this, "竖屏模式", Toast.LENGTH_SHORT).show();
   
7.     }
   
8. }

复制代码