CODEWITHSUNDEEP
javaandroidservicetimerhandler
IAmTheSquidward
IAmTheSquidward

Reputation: 582

Android service completely wrecks performance of device?

I have a service that needs to check if a certain application is in the foreground. When the application exits the foreground, the service will run a command. Right now, I have this implemented with a timer:

public int onStartCommand(Intent intent, int startid) {
    handler = new Handler();
    handler.post(new Runnable() {
        public void run() {
            Toast toast = Toast.makeText(MyService.this, "Service has started.", Toast.LENGTH_LONG);
            toast.show();
        }
     });

    Timer timer  =  new Timer();
    timer.scheduleAtFixedRate(new TimerTask() {

        public void run() 
        {
            /* Get all Tasks available (with limit set). */
            ActivityManager mgr = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
            List<ActivityManager.RunningTaskInfo> allTasks = mgr.getRunningTasks(showLimit);
            /* Loop through all tasks returned. */
            for (ActivityManager.RunningTaskInfo aTask : allTasks) 
            {                  
                Log.i("MyApp", "Task: " + aTask.baseActivity.getClassName()); 

                if (aTask.baseActivity.getClassName().equals("package")) {
                    running=true;
                    }
                else {
                    RunAsRoot(commandsdefault);
                }
            }
        }
    }, 6000, 3000);  // every 3 seconds, with a 6 second first execution delay


    return START_STICKY;

}

Which is great, it works as intended. But it's eating up an enormous amount of CPU time, and the UI for all applications, even the launcher, is jumpy. Is there a better method of doing this?

Upvotes: 1

Views: 64

Answers (1)

rupesh jain
rupesh jain

Reputation: 3430

probably mgr.getRunningTasks(showLimit); is taking lot of resources..you can reduce "showLimit" value and check the difference.

You can also try calling http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/1.5_r4/com/android/internal/app/IUsageStats.java through reflection if you planning to build app usage manager kind of app...

Upvotes: 2

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