Screen Timeout

public class MainActivity extends Activity {
int defTimeOut = 0;
private static final int DELAY = 30*1000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

defTimeOut = Settings.System.getInt(getContentResolver(),
Settings.System.SCREEN_OFF_TIMEOUT, DELAY);
Settings.System.putInt(getContentResolver(),
Settings.System.SCREEN_OFF_TIMEOUT, DELAY);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}