Question

I am developing an Android application with few views like A,B,C,D. Here D is my home activity. My navigation is like A->B->C->D. Once I reach Activity D, when I try to press back button, all previous activities (A,B,C) should close. I can’t start activity like finish called calling new activity. Please provide me a way to kill activity of my application.

Here I’ve used some code to finish all activities but did not get result.

ActivityManager manager =  (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
List<RunningAppProcessInfo> list = manager.getRunningAppProcesses();

if(list != null)
{
    for(int i=0;i<list.size();++i) {
        if(getApplicationContext().getPackageName().matches(list.get(i).processName)) {
            int pid = android.os.Process.getUidForName(getApplicationContext().getPackageName());
            android.os.Process.killProcess(pid);
        } 
        else {
            debug.log("app not killed");
        }
    }
}

So please suggest me proper way to close all my activity at a time.

Thanks in advace

Answer 1

Thank you for all who respond for my question. Finally i got the solution for my issue. I resolved that by using the intent Intent.FLAG_ACTIVITY_CLEAR_TOP. Here is explanation for my scenario.
Assume i am in Activity D. My actual flow is A->B->C->D.i want to kill my previous activities A,B,C. I used to call my first activity A when i am going from Activity D.
So i added intent FLAG_ACTIVITY_CLEAR_TOP to call activity A. So the middle activities will cleared and will show only Activity A. And i am passing some flag value as intent extras to activity A. like this

Intent intent = new Intent(D.this,A.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                intent.putExtra("finishstatus", true);
                this.startActivity(intent);
                this.finish();

and i am checking the bundle value in onCreate method of Activity A like

bundle = this.getIntent().getExtras();
        if(bundle!= null)
        {
            boolean isActivityToBeFinish = this.getIntent().getExtras().getBoolean("finishstatus");
            if(isActivityToBeFinish)
            {
                finish();
                }
    }

If the status value available and it is true then i am finishing the activity A also. So my problem is cleared and i am successfully finishing the all previous activities.

May be my explanation is not good but will work perfectly.