How to control landscape and portrait programmatically in android?

Question

I developed on application using android sdk 4.0 and I install that .apk file in my samsung tab. When I run that application it is working properly. If I change the tab portra

Answer 1

add android:screenOrientation="portrait" for each activity in your manifest.xml file.

You can do this programmatically too, for all your activities making an AbstractActivity that all your activities extends.:-

public abstract class AbstractActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }
}