//put this <
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
// > In your MainActivity.javaandroid:screenOrientation="portrait" <activity android:name=".SomeActivity"
android:label="@string/app_name"
android:screenOrientation="portrait" /><!-- inside of your AndroidManifest.xml -->
<activity android:name=".MainActivity"
android:screenOrientation="portrait"/><activity
...
...
android:screenOrientation="nosensor">