ANDROID Show a dialog when the Internet/GPS loses connectivity or is not connected

Question

[EDITED]

I want to show a Splash Screen / dialog when the Internet or GPS is down or not connected so the user can\'t use the app until the connection is good again.

Answer 1

you can create a Service class and use TimerTask with Timer and give it a duration to start over, with this you can start your service from the receiver that you already have and make it (receiver) listen to BOOT_COMPLETED with

and specify a permission

and let your receiver call the service class -(or you can check your stuff there -(take into consideration the comments i made)) by implementing this in your onReceive

boolean isMyServiceRunning(Class serviceClass, Context t) {
    ActivityManager manager = (ActivityManager) t.getSystemService(Context.ACTIVITY_SERVICE);
    for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
        if (serviceClass.getName().equals(service.service.getClassName())) {
            return true;
        }
    }
    return false;
}

and if it returns false start service using

Intent i = new Intent(context, MyService.class);
context.startService(i);

then in your service do this

public class MyService extends Service {
Timer timer; TimerTask task;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    // TODO Auto-generated method stub

    timer = new Timer();
    task = new TimerTask() {  
      @Override                 
      public void run() { 
          // put here your code for checking 

          String status = NetworkUtil.getConnectivityStatusString(context);
          // i am having nesting problems so put this in a handler() ok
          Toast.makeText(context, status, Toast.LENGTH_LONG).show();
          if(status.equals("Not connected to Internet")) {
          Intent splashIntent = new Intent(context, SplashScreen.class);
          splashIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          context.startActivity(splashIntent);  
           }
        // handler() code should end here           
     };                             
    timer.schedule(task, 0, 3000);  // repeat every 3 seconds

    return START_STICKY;
  }
}

its getting long, to close your splash screen, you can pass an instance of your activity and make it close itself from the service, or bind to the service or use local broadcast manager

also my code closing tags might be wrong so correct them..