How can I pass parameters between two activities?

Question

I am trying to pass parameters between two activities which are tabs of tabhost. How do I send a value correctly from an activity (Active.java) to a second activity (Active2.java)? What did I do wrong?

Active.java

public class Active extends Activity {

   private Intent intent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_active);

      // intent = new Intent(this,Active2.class);
      intent = getParent().getIntent();   
    }
    public void Location(View view) {

    final LocationManager LocMgr = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        final LocationListener LocList = new LocationListener() {

            @Override
            public void onLocationChanged(Location location) {


                double latitude = location.getLatitude();
                double longitude = location.getLongitude();

                LatLng point = new LatLng(latitude, longitude);
                intent.putExtra("point", point);
                intent.putExtra("Active",1);
                TabActivity ta = (TabActivity) Active.this.getParent();
                ta.getTabHost().setCurrentTab(1);
           }
    }; 
}

Active2.java

public class Active2 extends Activit {

  private GoogleMap googleMap;
  private GoogleApiClient client;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_active2);

      getFragmentManager().findFragmentById(R.id.map)).getMap();
      client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
      updateGoogleMap();
    }
   void updateGoogleMap ()
   {

     Bundle extras = getIntent().getExtras();
      if(null !=extras) {

          LatLng point = (LatLng) extras.get("point");
          TextView text = (TextView) findViewById(R.id.GpsStat) ;
          text.setText("bylem");

          googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
          googleMap.addMarker(new MarkerOptions().position(point).title("point"));
      }
  }
}

where are you sending data? You need to put all values in Intent and then pass that intent in `startActivity(intent)` — SweetWisher ツ, Jun 17 '16 at 11:21
try this http://stackoverflow.com/questions/2091465/how-do-i-pass-data-between-activities-on-android or http://stackoverflow.com/questions/19286970/using-intents-to-pass-data-between-activities-in-android — Abhishek Patel, Jun 17 '16 at 11:21
Activities as tabs has been deprecated since API 13. You should be using `Fragment`s instead. — Mike M., Jun 17 '16 at 11:27
If you type this in google you get lot of answer. **How can I pass parameters between two activities?** link for google search - https://www.google.co.in/search?client=ubuntu&channel=fs&q=How+can+I+pass+parameters+between+two+activities%3F&ie=utf-8&oe=utf-8&gfe_rd=cr&ei=FOhjV_zsIJKnvwSB_5GwBA — Ranjith Kumar, Jun 17 '16 at 12:07

score 1 · Accepted Answer · answered Jun 17 '16 at 11:43

Firstly i want to say that you have lots of error in your code. yo should make more improvement in its quality. read more.

now answer to your question.

You have to start the activity in Active.java to send it to Active2.java activity.
You have to give create new intent in Active.java and this will help you to put all the intent values into the intent.
Then you can start the startActivity() and start the Active2.java.
Then only you will have those values in the Active2.java and you can retrive all those values here.

so it would be like this

in Active.java

    Intent intent = new intent(Active.this,Active2.class);
    intent.putExtra("point", point);
    intent.putExtra("Active",1);
    startActivity(intent);

in Active2.java

    Intent intent=getIntent();
    String point=intent.getStringExtra("point");
    int Active=intent.getIntExtra("Active");

How can I pass parameters between two activities?

1 Answers1