public void initUi() {
    if (AbstractTnUiBinder.getInstance() == null) {
      AbstractTnUiBinder.init(new AndroidCitizenUiBinder());
    }

    if (AbstractTnGraphicsHelper.getInstance() == null) {
      AbstractTnGraphicsHelper.init(new AndroidUiHelper());
    }

    TnUiContext.init(
        AndroidPersistentContext.getInstance().getContext(),
        AbstractTnUiBinder.getInstance(),
        AbstractTnGraphicsHelper.getInstance(),
        ResourceManager.getInstance());
  }
 public void initSensor() {
   if (TnSensorManager.getInstance() == null) {
     TnSensorManager.init(
         new AndroidSensorManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }
 public void initRadio() {
   if (TnRadioManager.getInstance() == null) {
     TnRadioManager.init(
         new AndroidRadioManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }
 public void initPersistent() {
   if (TnPersistentManager.getInstance() == null) {
     TnPersistentManager.init(
         new AndroidPersistentManager(), AndroidPersistentContext.getInstance());
   }
 }
 public void initMedia() {
   if (TnMediaManager.getInstance() == null) {
     TnMediaManager.init(
         new AndroidMediaManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }
 public void initLocation() {
   if (TnLocationManager.getInstance() == null) {
     TnLocationManager.init(
         new AndroidLocationManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }
 public void initBacklight() {
   if (TnBacklightManager.getInstance() == null) {
     TnBacklightManager.init(
         new AndroidBacklightManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }
 public void initNavSdk() {
   if (NavSdkEngine.getInstance() == null) {
     NavSdkEngine.init(new NavSdkEngine(AndroidPersistentContext.getInstance().getContext()));
   }
 }
 public void initTelephony() {
   if (TnTelephonyManager.getInstance() == null) {
     TnTelephonyManager.init(
         new AndroidTelephonyManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }