学步园

    想要Android应用只用竖屏，要在Manifest.xml文件设置属性（只能设置在Activity上）：

android:screenOrientation="portrait"  --> 只用竖屏

android:configChanges="keyboardHidden|orientation" --> 如此设置当用户横竖屏时不会重启Activity

完整的例子：

<application android:label="@string/app_name" 
      android:icon="@drawable/icon" 
      android:name=".MyApplication">
       <activity android:theme="@style/Theme.Welcome" 
       android:label="@string/app_name"  
       android:name=".MainIndexActivity"  
       android:screenOrientation="portrait" 
       android:configChanges="keyboardHidden|orientation">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
</application>

portrait  竖屏

landscape 横屏