Make Android App in Landscape/Portrait

To force Android App working in Landscape/Portrait, you can modify the AndroidManifest.xml file, to add "android:screenOrientation" in <activity>.

It can be "unspecified", "user", "behind", "landscape", "portrait", "sensor" or "nosensor".

eg.

                    android:label="@string/app_name"
            android:screenOrientation="landscape"
            >