OneSignalOpenActivityExample.java

package com.onesignal.example;

import android.app.Application;
import android.util.Log;

import com.onesignal.OneSignal;

import org.json.JSONObject


/***
TODO: Add the following line to your ANdroidManifest.xml in the application tag.
<meta-data android:name="com.onesignal.NotificationOpened.DEFAULT" android:value="DISABLE" />
This is required so both your laucher Activity and the custom one below are not both launched.
***/

public class ExampleApplication extends Application {

  private static Context appContext;

   @Override
   public void onCreate() {
      super.onCreate();
      appContext = this;

      // Logging set to help debug issues, remove before releasing your app.
      OneSignal.setLogLevel(OneSignal.LOG_LEVEL.DEBUG, OneSignal.LOG_LEVEL.WARN);

      OneSignal.startInit(this)
          .setNotificationOpenedHandler(new ExampleNotificationOpenedHandler())
          .setAutoPromptLocation(true)
          .init();
   }


   private class ExampleNotificationOpenedHandler implements OneSignal.NotificationOpenedHandler {
      /**
       * Callback to implement in your app to handle when a notification is opened from the Android status bar or
       * a new one comes in while the app is running.
       * This method is located in this Application class as an example, you may have any class you wish implement NotificationOpenedHandler and define this method.
       *
       * @param message        The message string the user seen/should see in the Android status bar.
       * @param additionalData The additionalData key value pair section you entered in on onesignal.com.
       * @param isActive       Was the app in the foreground when the notification was received.
       */
      @Override
      public void notificationOpened(String message, JSONObject additionalData, boolean isActive) {
        
        // TODO: Replace YourActivity with your Activity.
        Intent intent = new Intent(ExampleApplication.appContext, YourActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
      }
   }
}