App 清理后台程序

private void killAppProgress() {
        try {
            ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
            List<ActivityManager.AppTask> tasks = am.getAppTasks();
            if (tasks != null && tasks.size() > 0 ) {
                tasks.get(0).setExcludeFromRecents(true);
            }

            List mList = am.getRunningAppProcesses();
            for (Object runProgress : mList) {
                if (((ActivityManager.RunningAppProcessInfo) runProgress).pid != android.os.Process.myPid()) {
                    android.os.Process.killProcess(((ActivityManager.RunningAppProcessInfo) runProgress).pid );
                }
            }

            android.os.Process.killProcess(android.os.Process.myPid());
            am.killBackgroundProcesses(getPackageName());

            System.exit(0);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

或者 : 

private void clearMore() {
        int total = 0;
        int memorySize = 0;
        for (ProcessInfo infos : processInfoList) {
            if (infos.isChecked()) {
                ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
                am.killBackgroundProcesses(infos.getPkgname());
                total++;
                memorySize += infos.getMemSize();
                processInfoList.remove(infos);
                break;
            }
        }
        Toast.makeText(
                this,
                "清理了" + total + "个进程," + "释放了"
                        + TrafficDataUtil.getMemoryData(memorySize) + "内存",
                Toast.LENGTH_SHORT).show();
        adapter=new ClearMemoryAdapter(this, processInfoList);
        listView.setAdapter(adapter);
        btn_clea.setText("一键清理");
    }