Position of the activity in the activity stack

Am having an applications which contains activity A,B,C and activity A has been launched from the launcher and B from A and C from B. Now am having a button in C on clicking the button i should tell the开发者_高级运维 position of the activity c in activity stack . Ex A-B->C means C is at the 3 position of the activity stack.. How could i find this ?

Thanks in advance.

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There is no other way to know this, because of how the Tasks are designed. See this and this So a solution could be to keep track of the activities by storing them in an array of activities. I hope this helps.

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Use ActivityManager to get the stack position of activity which u want

May use the following example code

ActivityManager mngr = (ActivityManager) getSystemService( ACTIVITY_SERVICE );

List<ActivityManager.RunningTaskInfo> taskList = mngr.getRunningTasks(10);

to get the position of activity which u want use the below code for ur requirement

taskList.get(0).topActivity.getClassName()

and position start from o(zero).

Hope this will help you.

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This is possible.

What you need is an activity that extends Application. You also declare this in your manifest.

Android global variable

You then declare a variable within this class:

      public static int count = 0;

Then within each class you have

 @Override
 protected void onResume() {
    YourApplicationClass.count++;

 }

 @Override
 protected void onPause() {
   YourApplicationClass.count--;
 }

You then know what position you are at all the time.

System.out.println("Count is: "+YourApplicationClass.count);