How to kill all running applications in android?

Question

I want to kill all running applications in android .so for this task , i implemented following code. But it is not working .App still remains in running.

Act         


        

Answer 1

• You can use Process.killProcess(int pid) to kill processes that have the same UID with your App.
• You can use ActivityManager.killBackgroundProcesses(String packageName),with KILL_BACKGROUND_PROCESSES permission in your manifest(for API >= 8) or ActivityManager.restartPackage (String packageName)(for API < 8) to kill specified process,except of forground process.

So if you would to kill all other processes when your program is foreground process,you would to use ActivityManager.killBackgroundProcesses or ActivityManager.restartPackage:

List packages;
    PackageManager pm;
    pm = getPackageManager();
    //get a list of installed apps.
    packages = pm.getInstalledApplications(0);

   ActivityManager mActivityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
   String myPackage = getApplicationContext().getPackageName();
   for (ApplicationInfo packageInfo : packages) {
        if((packageInfo.flags & ApplicationInfo.FLAG_SYSTEM)==1)continue;
        if(packageInfo.packageName.equals(myPackage)) continue;
        mActivityManager.killBackgroundProcesses(packageInfo.packageName);
   }      

In above snippet code,each process will be killed unless it be process of your App or system process.
References:
How to close all active applications from my Android app?
How do task killers work?