Like i can send data from one activity to another using this:
intent.putExtra("Name", Value);
how can i send data when i am using finish()
to get back to the previous activity.
In my app from Activity_A
i am going to Activity_B
. In Activity_B
i am marking a location on map, which gives me latitude and longitude. Then i want to use this lat and lng in Activity_A
. But i don't want to get back to Activity_A
using an intent, because i don't want to recreate the Activity_A
since some data already filled will be lost.
For example: In secondActivity if you want to send back data: Intent returnIntent = new Intent(); returnIntent. putExtra("result",result); setResult(Activity. RESULT_OK,returnIntent); finish();
We can send the data using putExtra() method from one activity and get the data from the second activity using getStringExtra() methods. Example: In this Example, one EditText is used to input the text. This text is sent to the second activity when the “Send” button is clicked.
Intent data = new Intent(); data. putExtra("myData1", "Data 1 value"); data. putExtra("myData2", "Data 2 value"); // Activity finished ok, return the data setResult(RESULT_OK, data); finish();
The setResult method takes an int result value and an Intent that is passed back to the calling Activity. Intent resultIntent = new Intent(); // TODO Add extras or a data URI to this intent as appropriate. resultIntent. putExtra("some_key", "String data"); setResult(Activity.
As you are using intent.putExtra("Name", Value);
, use the same thing while finishing the activity also.
For ex.:
From activityA you call activityB like:
intent.putExtra("Name", Value); now instead of startActivity() use `startActivityForResult()`
And from activityB, while finishing the activity, call:
setResult(RESULT_OK);
Now in activityA, your onActivityResult
will be called, which is like:
@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub }
So inthis way you can handle it.
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