Android: Passing Parameters Between Activities With Adapter

Question

Hope I'll succeed explain my situation the best.

I have an Activity (A) which is basically a Form to add a new item, with few text fields, time and location field. When clicking a setlocation button it invokes a second Activity (B) that has a list view with a customized ArrayAdapter which present suggestions for locactins. when clicking on one item (OnClickListener inside the adapter class) It need to pass it falue back to Activity A.

Call Activity B from A

Intent I = new Intent(getApplicationContext(), TaskGeoSetActivity.class);
startActivityForResult(I, LOC_ACTIVITY_CODE);

Setting the adapter inside Activity B

Adapter = new TaskGeoSubBaseAdapter(getApplicationContext(), R.id.sugtext, result);
Adapter.setActivity(TaskGeoSetActivity.this);
lv.setAdapter(Adapter);

OnClick Event within the adapter

public void setActivity(Activity act) {
    parentAct = act;
}

private final OnClickListener locpicker = new OnClickListener() {

        @Override
        public void onClick(View v) {
            Address a = items.get((Integer) v.getTag());
            Intent intent = new Intent(context, TaskAddActivity.class);
            intent.putExtra("Address", a);
            parentAct.setResult(parentAct.RESULT_OK, intent);
        }

};

score 5 · Accepted Answer · answered May 17 '15 at 09:08

Replace your click handler with this.

private final OnClickListener locpicker = new OnClickListener() {

    @Override
    public void onClick(View v) {
        Address a = items.get((Integer) v.getTag());
        Intent intent = new Intent(context, TaskAddActivity.class);
        intent.putExtra("Address", a);
        ((Activity)v.getContext()).setResult(parentAct.RESULT_OK, intent);
        ((Activity)v.getContext()).finish();
    }
}

In your calling activity override onActivityResult to handle the result. OUR_REQUEST_CODE is the request code you sent when you called startActivityForResult.

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
    switch(requestCode){
        case OUR_REQUEST_CODE:
            if(resultCode == RESULT_OK) {
                //Do something useful with data
            }
            break;
    }
}

score 0 · Answer 2 · edited May 23 '17 at 12:01

0

To pass data back to activity A, you should be using the function setResult in combination with your startActivityForResult.

See this answer:

https://stackoverflow.com/a/14118010/238180

edited May 23 '17 at 12:01

Community

1
1

answered Jan 17 '13 at 13:45

Overv

8,433
2
40
70

Hi, thank you. I know that, the problem is that i need to invoke setResult within the adapter class – Ben Diamant Jan 17 '13 at 13:57

AMerle · Answer 3 · 2013-01-17T14:05:00.337

0

You have to set the result on your activity B, you don't need to Adapter.setActivity(TaskGeoSetActivity.this); Just this.setResult(parentAct.RESULT_OK, intent);:

private final OnClickListener locpicker = new OnClickListener() {

    @Override
    public void onClick(View v) {
        ActivityB.this.setResult(...);
        finish();
    }

edited Jan 17 '13 at 14:05

answered Jan 17 '13 at 13:46

AMerle

4,354
1
28
43

Hi, This on click listener is inside the base adapter. "This." does not recognize ActivityB. I know that setResult from activityB will pass it back to A but how do i pass it from the Adapter? Best regards – Ben Diamant Jan 17 '13 at 13:54
@BenDiamant sry, it was ActivityB.this. instead of this.ActivityB – AMerle Jan 17 '13 at 14:05
Hi! i get "No enclosing instance of the type ActivityB is accessible in scope" error at the line of: ActivityB.this.setResult(ActivityB.RESULT_OK, intent); – Ben Diamant Jan 17 '13 at 14:21
@BenDiamant oh I thought it was in activity B, it is in activity A ? – AMerle Jan 17 '13 at 14:36
Intent intent = new Intent(context, ActivityA.class); intent.putExtra("Address", a); ActivityB.this.setResult(ActivityB.RESULT_OK, intent); Line 3 give the error – Ben Diamant Jan 17 '13 at 15:07

Android: Passing Parameters Between Activities With Adapter

3 Answers3