wakelock enabled - device will not lock when the app is running

mobile/src/main/java/de/tudresden/inf/st/sensorsharing/MainActivity.java

@@ -12,6 +12,7 @@ import android.support.annotation.NonNull;
 import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.View;
+import android.view.WindowManager;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
@@ -107,6 +108,7 @@ public class MainActivity extends AppCompatActivity implements
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 
         System.setProperty("log.tag." + TAG, "INFO");