Do Activity changes, based on the calling activity

Question

I am using start activity for result which opens another activity and returns the intent which contains extras.

Anyway, I would like to know if the following is possible. I will give an example to make it easier to understand what i am trying do.

Lets say we have activity A activity B and activity C which is the activity A and B start for a result.

I would like to know if I can state, if from activity A launched C, C reveals a hidden spinner. If it was B that launched C, the spinner remains hidden.

Basically activity C changes based on which activity started it.

Is there a way of achieving this?

possible duplicate of [how to know the calling activity in android](http://stackoverflow.com/questions/4967799/how-to-know-the-calling-activity-in-android) — njzk2, Apr 11 '14 at 14:06
In the particularity of a `startActivityForResult`, the second answer to the duplicate question is more relevant: use `getCallingActivity()` — njzk2, Apr 11 '14 at 14:07

score 0 · Answer 1 · answered Apr 11 '14 at 14:04

0

Check this out: http://developer.android.com/reference/android/app/Activity.html#startActivityForResult(android.content.Intent, int)

You pass in a resultCode int. Why don't you check that value in Activity C and set up your spinner based on that? Alternatively, you can just pass a Bundle with some value that you check.

answered Apr 11 '14 at 14:04

The Hungry Androider

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this is not relevant to the question. The requestcode does not reach the started activity – njzk2 Apr 11 '14 at 14:09

score 0 · Answer 2 · answered Apr 11 '14 at 14:05

Activity A: do this

Intent intent = new Intent();
intent.setClass(this, Other_Activity.class);
intent.putExtra("HIDE_SPINNER", false);
startActivity(intent);

Activity B: do this

Intent intent = new Intent();
intent.setClass(this, Other_Activity.class);
intent.putExtra("HIDE_SPINNER", true);
startActivity(intent);

Activity C: do this

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  Bundle extras = getIntent().getExtras();
  if (extras != null) {
   Boolean shouldHide = extras.getBoolean("HIDE_SPINNER");
   if (shouldHide ) {
        // hide it
   } else {
        // show it
   }
}

score 0 · Accepted Answer · edited May 23 '17 at 11:51

You can use getCallingActivity() method to do your task. Read class name from that and match with name of your ActivityA and ActivityB.

Write below code into Activity C.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // ....

    // Below is code to setup
    String callingActivity = getCallingActivity().getShortClassName().replace(".", "");
    if (ActivityA.class.getSimpleName().equals(callingActivity)) {
        // Activity has been called by Activity A
    } else if (ActivityB.class.getSimpleName().equals(callingActivity)) {
     // Activity has been called by Activity B
    }
}

Other resorces are how to know the calling activity in android and How to know if an activity is called using startActivityForResult or simply called by using startActivity?

Do Activity changes, based on the calling activity

3 Answers3