Kill all recent applications in android

Question

When i press home key for long time in my android device.I get list of all recent applications. Now i want to kill all my recent applications pro grammatically from within my application. I am able to get list of all recent applications but not able to kill all apps.

I want to achieve it with android version 4.x

Can anyone guide me ?

Answer 1

First get a list of RunningTaskInfo records using the following:

 [public List<ActivityManager.RunningTaskInfo> getRunningTasks (int maxNum)][1]

Reference

After that, you can use the process-ids in that list to terminate the relevant processes using either

activityManager.killBackgroundProcess(pid);
                    or
android.os.Process.killProcess(pid);

depending upon whether you can kill that process. Way to kill these is detailed here.

Answer 2

You can try Process.killProcess(). But it wont allways work:

Kill the process with the given PID. Note that, though this API allows us to request to kill any process based on its PID, the kernel will still impose standard restrictions on which PIDs you are actually able to kill. Typically this means only the process running the caller's packages/application and any additional processes created by that app; packages sharing a common UID will also be able to kill each other's processes.