title: How detect if app was opened? [Android ReactNative]
body: <p>I send push notif. from Device1 to Device2. Device2 catch this and emit NativeModule custom method "invokeApp" for app invoking. It works perfect, even if app was in killed state.</p>
  
  <p>Device2 open my app, and i trying to emit info data to the Device1, that my app on Device2 was successfully opened.</p>
  
  <pre><code>WritableMap paramsData = Arguments.createMap();
          paramsData.putString("eventProperty", "successfully opened");
  
          reactContext
          .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
          .emit("appInvoked", paramsData);
  </code></pre>
  
  <p>If Device2 was in background state - this works, Device1 catch message about successfully opening. BUT! If Device2 was in killed state (it was killed from 
  list of recently opened applications), it doesn't work(</p>
  
  <p>I catch this event with NativeEventEmitter module of ReactNative</p>
  
  <pre><code>const eventEmitter = new NativeEventEmitter(NativeModules.RNInvokeApp);
      eventEmitter.addListener('appInvoked', (event) =&gt; {
        console.log('event invoked', event);
      });
  </code></pre>
  
  <p>How can I emit information, when the application was in a killed state?
  Help please. I have been trying to solve this for the second week. Thanks in advance for your future tips.</p>