Question

I’m currently developing an app which uses GPS location on googleMaps view. I check if GPS feature is activated, and if not I redirect the user to the setting menu.

1. If I click on Back button (by activating or not the GPS) I come back to my app – works fine
2. If I click on Home button, and then relaunch my app, I am directly redirected to the GPS setting menu => my intent is still on.
   The problem is that I do not know when kill this intent.

Here is the incriminated part of my code:

    Button btnLocateMe = (Button)findViewById(Rsendlocationinfo.id.locateme);
    btnLocateMe.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {

            Context context = getApplicationContext();

            objgps = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 

            //Check GPS configuration
            if ( !objgps.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {  

                //Warn the user that its GPS is not activated
                Toast gpsActivationCheck = Toast.makeText(context, "GPS deactivated - Touch to open the GPS settings.", Toast.LENGTH_LONG);
                gpsActivationCheck.show();

                //Open the GPS settings menu on the next onTouch event
                //by implementing directly the listener method - dirt manner
                mapView.setOnTouchListener(new OnTouchListener() {
                    public boolean onTouch(View v, MotionEvent event) {  

                        //And here is my problem - How to kill this process
                        startActivityForResult(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS), 0);  

                        return false;
                    }
                });      
            }
            else {  
                //Location acquisition.  
            }  

I tried some stopself(), finish(), in onStop(), onDestroy(), onPause()… It crashes or does not do anything…
Could you please give me a hand ?

Answer 1

Ok, I have finally found.
I will try to explain the difference in the behavior clearly:

1. Old behavior:

   • Launch application
   • Google maps activity starts
   • User accepts redirection to the setting menu to activate GPS
   • Setting menu displayed
   • User click on “Home” button
   • User relaunch the application
     => the setting menu is displayed, as it is the latest intent in the history stack of the application.

The code to launch this intent was:

startActivityForResult(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS), 0);

1. New behavior:

   • Launch application
   • Google maps activity starts
   • User accepts redirection to the setting menu to activate GPS
   • Setting menu displayed
   • User click on “Home” button
   • User relaunch the application
     => The Google maps is displayed, and not the setting menu, because I have added the flag FLAG_ACTIVITY_NO_HISTORY to the redirection intent.

My code is now:

Intent intentRedirectionGPSSettings = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
intentRedirectionGPSSettings.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

startActivityForResult(intentRedirectionGPSSettings, 0);

I tried to explain well.
The tag “android:noHistory(true)” in the manifest.xml works for activities, but the flag FLAG_ACTIVITY_NO_HISTORY is a good alternative, as it works for intents.

Thank you for help.