Service和启动其他应用的功能和替换Fragment

Service后台奔溃

1.启动

        Intent intent = new Intent(this, SpotLightService.class);
        this.startService(intent); //这个普通启动会在低内存的时候被杀掉
        //普通的启动修改成前台启动
        this.startForegroundService(intent);
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2.修改SERVICE

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        int startResult = super.onStartCommand(intent,flags,startId);
        startForeground();
        return START_STICKY;
    }

    private void startForeground() {
        final NotificationManager noMan = getSystemService(NotificationManager.class);
        noMan.createNotificationChannel(new NotificationChannel(
                NOTIFICATION_CHANNEL_ID, NOTIFICATION_CHANNEL_ID,
                NotificationManager.IMPORTANCE_DEFAULT));
        //Log.d(TAG, "Starting foreground. myUid=" + Process.myUid());
        startForeground(NOTIFICATION_ID,
                new Notification.Builder(this,NOTIFICATION_CHANNEL_I
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根据包名启动应用

    public boolean startAPPFromPackageName( String pckName) {
        if (pckName.equals("acr.browser.lightning.activity.MainActivity") || pckName.equals("com.android.bthsrv.MainActivity")) {
            Intent intent = new Intent().setComponent(new ComponentName("com.viso.mdm" , pckName) );
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.addFlags(Intent.FLAG_ACTIVITY_NO_USER_ACTION);
            sContext.startActivity(intent);
        }

        try {
            Intent intent = isexit(pckName);
            if (intent == null) {

            }
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.addFlags(Intent.FLAG_ACTIVITY_NO_USER_ACTION);
            sContext.startActivity(intent);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
   public Intent isexit(String pk_name) {
        PackageManager packageManager = sContext.getPackageManager();
        Intent it = packageManager.getLaunchIntentForPackage(pk_name);
        return it;
    }
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其中从最近任务栏进入wps如果不经过特殊处理则不能进入

        //判断是否为WPS，如果是WPS应用，通过任务ID启动，否则当有多个WPS任务时，会导致WPS报错
        if ("cn.wps.moffice_eng".equals(bean.getPackageName())) {
            ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
            manager.moveTaskToFront(bean.getId(), ActivityManager.MOVE_TASK_WITH_HOME);
        } else {
            mRecentTaskHelper.startAppByClassName(this, bean.getPackageName(), bean.getClassName());
        }
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//获取最近任务栏应用

List<ActivityManager.RecentTaskInfo> appTasks = activityManager.getRecentTasks(Integer.MAX_VALUE, ActivityManager.RECENT_IGNORE_UNAVAILABLE);
                    if (appTasks == null || appTasks.size() == 0) {
                        emitter.onNext(taskList);
                        return;
                    }
                                        for (ActivityManager.RecentTaskInfo taskInfo : appTasks) {
                        ResolveInfo resolveInfo = packageManager.resolveActivity(taskInfo.baseIntent, 0);
                        String packageName = resolveInfo.activityInfo.packageName;
                        //过滤不需要的应用
                        if (!isNotShowApp(mContext, packageName)) {
                            TaskBean bean = new TaskBean();
                            bean.setName(resolveInfo.loadLabel(
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System.currentTimeMillis()的时间会有误差，如果时区不同会造成误差，所以使用SystemClock.elapsedRealtime();是比较准确的做法

** 替换FragmentManager **

FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.right_fragment, fragment);
transaction.addToBackStack(null);
transaction.commit();
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