Android学习点点滴滴之获取正在运行的进程

　ActivityManager _ActivityManager = (ActivityManager) this
                .getSystemService(Context.ACTIVITY_SERVICE);
        List<RunningAppProcessInfo> list = _ActivityManager
                .getRunningAppProcesses();
        int i = list.size();
        Log.i("tag", String.valueOf(i));
        for (int j = 0; j < list.size(); j++) {
            Log.i("tag", list.get(j).processName);
        }