Toast doesn't disappear from screen

Question

I have a problem with my simple android aplication that use GPS cords.

My class MyLocationListener implements LocationListener, and there is a static method call:

    String strText ="My current location is: " + "Latitude = " +  location.getLatitude() + " Longitude= " + location.getLongitude();
    Toast.makeText(GpsModule.cont, strText, Toast.LENGTH_SHORT).show();

Problem is with displaying this string. It's showing up, and never ends. When I press back button for main menu and even when I close application it's showing up constantly. Any clue? How can I resolve this problem?

GpsModule Class:

public class GpsModule extends Activity {

public static Context cont;
//public static WebView position;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.gps);
    cont = getApplicationContext();
    //position = new WebView(cont);

    //position = (WebView) findViewById(R.layout.gps);
    //position.getSettings().setJavaScriptEnabled(true);


    LocationManager locManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    LocationListener locListener = new MyLocationListener();
    locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener);
}

MyLocationListener class:

@SuppressLint("ShowToast")

public class MyLocationListener implements LocationListener{

public void onLocationChanged(Location location) {
    // TODO Auto-generated method stub
    location.getLatitude();
    location.getLongitude();

    String strText ="My current location is: " + "Latitude = " +  location.getLatitude() + " Longitude= " + location.getLongitude();
    Toast.makeText(GpsModule.cont, strText, Toast.LENGTH_SHORT).show();

}

public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub
    Toast.makeText(GpsModule.cont, "GPS disabled", Toast.LENGTH_SHORT).show();
}

public void onProviderEnabled(String provider) {
    // TODO Auto-generated method stub
    Toast.makeText(GpsModule.cont, "GPS enabled", Toast.LENGTH_SHORT).show();
}

public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

}

}

The line where you register your `MyLocationListener` would be interesting. — user802421, Aug 30 '12 at 16:02

score 3 · Answer 1 · answered Aug 30 '12 at 16:19

3

I think, you add your code in your location detection function and LocationListener is active. That means your Toast is called when GPS detect new location.

answered Aug 30 '12 at 16:19

Ratna Halder

1,954
16
17

That's correct. What could be the possible solution? I added source of my classes. Could You have a look? – Mariusz Chw Aug 30 '12 at 16:32

score 3 · Accepted Answer · answered Aug 30 '12 at 16:40

3

Please read the docs of the method LocationManager.requestLocationUpdates().

Especially the parameter:

    minTime     minimum time interval between location updates, in milliseconds.

Try value 10'000 for every 10 sec. In production you should consider value more than mins.

answered Aug 30 '12 at 16:40

user802421

7,465
5
40
63

Thanks for help. There was 2 problem: - one with parameters in requestLocationUpdates() - You resolved this, and thanks a lot - one with showing Toast even after clicking Back button – Mariusz Chw Aug 30 '12 at 17:14
1

Toast showing doesn't happen on UI thread. I don't think you can change that. You can look in to notification api. – user802421 Aug 30 '12 at 17:44

score 1 · Answer 3 · answered Aug 30 '12 at 16:05

1

Looks like your location listener is active and repeatedly gets called. are you moving your device? LocationListener is called when the location changes.

answered Aug 30 '12 at 16:05

Visa

111
4

Even when phone is not moving, location is changing because of number precision. For example: 50,00443558333333 – Mariusz Chw Aug 30 '12 at 16:36

score 1 · Answer 4 · edited Sep 20 '16 at 08:21

1

Try this,

1 .

Toast.makeText(getBaseContext(), strText, Toast.LENGTH_SHORT).show();

2 .

@Override 
public void onPause() {
    super.onPause();
    locationManager.removeUpdates(locationListener);
}

3 .

@Override
    public void onResume() {
        super.onResume();
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                Length, long, locationListener);
    }

Length and long should be more than 0.

edited Sep 20 '16 at 08:21

Jitesh Prajapati

2,533
4
29
51

answered Aug 30 '12 at 16:34

Ratna Halder

1,954
16
17

Thanks for help. There was 2 problem: - one with parameters in requestLocationUpdates () - one with showing Toast even after clicking Back button - You resolved this, and thanks a lot – Mariusz Chw Aug 30 '12 at 17:13

Toast doesn't disappear from screen

4 Answers4

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