AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.dayu.learncenter" >
    <application
        android:allowBackup="true"
        android:label="@string/app_name"
        android:supportsRtl="true">
        <activity android:name=".ui.activity.PubCourseActivity"
            android:configChanges="orientation|screenSize|keyboardHidden"
            android:screenOrientation="portrait"
            />
        <activity android:name=".ui.activity.CourseDetailActivity"
            android:configChanges="orientation|screenSize|keyboardHidden"
            android:screenOrientation="portrait"
            />
        <activity android:name=".ui.activity.EditCourseActivity"
            android:configChanges="orientation|screenSize|keyboardHidden"
            android:screenOrientation="portrait"
            />

    </application>
</manifest>