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Intent.FLAG_ACTIVITY_FORWARD_RESULT Live Example In Android

Can any one tell me the the working of Intent.FLAG_ACTIVITY_FORWARD_RESULT Live Example
now what I am doing just creating three activity that are A,B,C
so When I am Launching Application from activity A and from A I am Starting Activity B with startActivityForResult(Activity B) and there In B Activity I am starting activity C with Intent.FLAG_ACTIVITY_FORWARD_RESULT and finishing B Activity,so now from there in Activity C When I finished to Activity C it gives result back to the Activity A in onActivityResult().
So i want to know that is this the purpose of using this flag or that is something different and if I am wrong please let me know.
and please try to give answer with example.

Virendra, your assumptions are correct. This gist demonstrates a simple use case: https://gist.github.com/mcelotti/cc1fc8b8bc1224c2f145. Please note the use of setResult() in ActivityC before it is finished.

The solution is already on the stackoverflow .I hope you may understand the logic .
I suggest you to go with this solution flag activity #stackoverflow.

Android three activities, pass data from third activity to parent activity

I have 3 activities. Let's say A, B, C. Main activity is A.
I'd like to start B from A then start C from B, then close B when C opens. Finally upon closing of C pass data to A.
How's this possible especially with Intent and startActivityForResult? Is it at all possible with the two latter methods?
Thanks.

Supose you are using a button, when you click the button to start the activity C, you can finish the activity B, and get the action in the activity A.
Use onActivityResult() on activity A. On this pont, you can start the activity C using startActivityForResult().
This way, when you finish C, you can pass data to A, again using onActivityResult().

Renan Lopes Ferreira's reply did the trick. Cheers.

You can always start B from A and C from B using Intents.
As you are removing A from the stack, C cannot directly pass data to A using startActivityforResult() and onActivityResult). (Isn't it obvious, A doesn't even exist in memory).
So for A to access C's data, you must store C's data somewhere, so that A can access it, the next time it is up. Now, here the other scenario would be store it as persistent or non-persistent data. If you want the data to be persistent, it is recommended to use Shared Preferences, Database etc. and if you want it to be non-persistent then you may use Singleton etc.
Refer : http://developer.android.com/guide/faq/framework.html

Android how to create activity only if it wasn't created yet

I have a problem cause when I go to different activities using startActivity function,
they always get created from scratch. Even if activity A was visited before, when I go to activity B and then A again, activity A is created again.
The problem is with back button, cause if I go to Activity A then B then A and then B,
in order to close the application I have to press back button 4 times.
I guess that it shouldn't act like it and user should be able to go to activity A when first pressed back button and the second press should close the application.
How to solve this issue?
Greetings

If you have activity transitions like:
Activity A -> Activity B
Activity B -> Activity A
and you want the user to go back to the same instance of Activity A in this case, maybe you just need to call finish() in Activity B after you call startActivity() for Activity A?
If this isn't helpful, please give us more information about what you are trying to do.

make sure you implement onSaveInstanceState and be prepared to restore your activity from a Bundle in onCreate. that's how you re-establish where you were when you return to an activity.

add launcheMode="singleTask" to your activity in the manifest

You need to set FLAG_ACTIVITY_SINGLE_TOP to your intent for launching activity A. Doing so will cause your previously created activity to re-use. Make sure you do handle your afterwards intents in onNewIntent method. For more info.

You need to set the flag FLAG_ACTIVITY_REORDER_TO_FRONT when you start activity A from B or vice versa, like
i = new Intent("....ActivityAorB");
i.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(i);

I've tried solutions proposed so far, however they didn't do it for me.
What did however, is using flag FLAG_ACTIVITY_CLEAR_TOP while starting activities.
Thanks for pointing me in the right direction though.

Activity from a background activity?

Am having an application contains activity A,B,C and A is launched from the browser and B is launched from A, a count timer running on A launches an activity C if the timer hits. Could any one plz tell the stack order for the activity of this application. either A->B->C or A->C->B. However now the visible activiy should be C if i press back key from C which should display either A or B ?
Thanks in advance.

You can try to launch B from A and C from A with
startActivityFromChild(this, intentOfC, REQ_CODE_FOR_C);
I'm not sure it may be useful to you.

This order is depends upon the launch mode of your activity

Android Actvities problem for getting result

I have two activities A & b.
in A i have one button which takes me to the activity B. in Activity B i have one edit text. when user enter some values in edittext i m getting the value in some variable. and i want to pass this value back to activity A. i applied the Bundle concept bt it is force closing my app.
pls anybody can help me?
thanks in advance.

you should use Intent.putExtra() to transfer the value.