passing value another activity

Question

I made a WeatherSyncAdapterClass, I create a method and get the latitude and longitude value from GPS.

public void getGPS(){
    Context context = WeatherSyncAdapter.super.getContext();
    gps = new GpsTrack(context);
    if (gps.canGetLocation()) {
        while (lat == 0.0 && lon == 0.0) {
            setLat(gps.getLatitude());
            setLon(gps.getLongitude());
            latitude = Double.toString(lat);
            longitude = Double.toString(lon);
        }
    }
    else {
        gps.showSettingsAlert();
    }
}

...and then I set the URI value for the "locationsetting" with this statement:

    public void setLatLon(double a, double b) {
    //Double.toString(weather.getLatitude()+weather.getLongitude())
    LatLon = Double.toString(a+b);
}

(I just set the uri for the location setting from addition latitude and longitude ^_^, I know this is stupid)

My question is how to pass the "LatLon" value to the "mainActivity" for matching the URI? I know intent will pass the value but i think thats will be bad solution cause will (maybe) open the another activity.

please help me :(((

you want to pass your value from **adapter** to **activity** class? — Rahul Sharma, Sep 08 '16 at 07:01
have you tried using startActivityForResult in mainActivity class? — rookieDeveloper, Sep 08 '16 at 07:03
From mainActivity, you want to call another class and get the longitude and latitude values from it, without changing the GUI, right? — Syed Daniyal Nasir, Sep 08 '16 at 07:05
Question is unclear. Do you want to pass value from adapter to Activity? What exactly you want? — Sufian, Sep 08 '16 at 07:28

score 3 · Answer 1 · edited Sep 08 '16 at 07:23

3

Intent intent = new Intent(current.this, mainActivity.class);
intent.putExtra("Lat",Double.toString(a));
intent.putExtra("Lon",Double.toString(b));
startActivity(intent);

Using the intents you can pass values to other activities. intent.putExtra method/function will send data in form of key,value pair.

In the MainActivity.class you can use following code to retrive the data from intent

Intent intent = getIntent();
String latitude = intent.getStringExtra("Lat");
String longitude = intent.getStringExtra("Lon");

edited Sep 08 '16 at 07:23

Rakesh kumar

392
5
13

answered Sep 08 '16 at 07:12

Bharatha Aravind

101
7

yes, i wanna passing the value from the syncAdapter to the mainActivity, Intent its doesnt work cause i see "red" on "startActivity", what should i do :( – cahyowhy Sep 08 '16 at 14:17
you have to get the context reference and then try startActivity. You can use the following code to get the context reference getApplicationContext().startActivity(intent). If this does not help can you place the code so I can fix it. – Bharatha Aravind Sep 09 '16 at 06:15

passing value another activity

1 Answers1