Handle data from several activities in one onActivityResult()?

问题

I wonder if it's possible to handle data from e.g. activity 2 and activity 3 in activity 1 that have one onActivityResult(), or do I need to have one method for each activity that return data?

Activity 1 is the main activity for the application.

Activity 1:

// Handle return value from activity
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == Activity.RESULT_OK) {
        String imageId = data.getExtras().getString("imageId");

        // Do something if data return from activity 2 ??

        // Do something if data return from activity 3 ??
    }
}

Activity 2

Intent intent = new Intent();
intent.putExtra("imageId", imagePath);
setResult(RESULT_OK, intent); 
finish();

Activity 3

Intent intent = new Intent();
intent.putExtra("contactId", data);
setResult(RESULT_OK, intent);
finish();

回答1:

set requestCode in your startActivityForResult for activity 1:

calling activity 2

Intent intent = new Intent(this, Activity2.class);
startActivityForResult(intent,10);

calling activity 3

Intent intent = new Intent(this, Activity3.class);
startActivityForResult(intent,11);

Now when you come to onActivityResult check that requestCode

like:

 public void onActivityResult(int requestCode, int resultCode, Intent data)
 {

      super.onActivityResult(requestCode, resultCode, data);

       switch (requestCode) {

          case (10): 
          {
            // do this if request code is 10.
          }
          break;

          case (11):
          {
            // do this if request code is 11.
          }
          break;
  }

回答2:

No confusion check result code and request code..

Example :

private static final int TWO = 2;
private static final int THREE = 3;

startActivityForResult(new Intent(this,Activity2.class),TWO); // one for Activity 2
startActivityForResult(new Intent(this,Activity3.class),THREE);

and

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == Activity.RESULT_OK ) {
        if(requestCode == TWO) {
            // Activity two stuff
        } else if(requestCode == THREE) {
            // Activity three stuff
        }
    }
}

来源：https://stackoverflow.com/questions/15001746/handle-data-from-several-activities-in-one-onactivityresult

标签

android

onactivityresult