Time for action – handling Activity events

We are not done yet. Let's continue our example to handle activity events and log them to the LogCat view:

1. Continue editing jni/EventLoop.cpp. Implement activate() and deactivate().Check both activity states before notifying the listener (to avoid untimely triggering). We consider an activity as activated only if a display window is available:

   ...
   void EventLoop::activate() {
       // Enables activity only if a window is available.
       if ((!mEnabled) && (mApplication->window != NULL)) {
           mQuit = false; mEnabled = true;
           if (mActivityHandler.onActivate() != STATUS_OK) {
               goto ERROR;
           }
       }
       return;
   
   ERROR:
       mQuit = true;
       deactivate();
       ANativeActivity_finish(mApplication->activity);
   }
   
   void EventLoop::deactivate() {
       if (mEnabled) {
           mActivityHandler.onDeactivate();
           mEnabled = false;
       }
   }
   ...

   • Route activity events from the static callback callback_appEvent() to the member...