如何通过WorkManager和OneTimeWorkRequest在Android中的特定时间接收每日通知?

问题描述 投票:0回答:1

我的目标

激活我的开关后,每8点接收一次通知

当前结果

-如果我第一次激活该开关,每次启动该应用程序时都会收到通知

-我也随时收到通知,而没有启动应用程序

-此外,我会在一天内收到几条通知

我做了什么(我的代码)

-NotificationActivity(onCreate的一部分)

 private void onClickSwitch() {
        aSwitch.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                retrieveKeyWord();
                retrieveCategories();

                keywordPref = mPreferences.getString(PREF_KEYWORD, null);
                categoriesPref = mPreferences.getString(PREF_CATEGORIES, null);

                mPreferences.edit().putString(PREF_KEYWORD, keyword).apply();
                mPreferences.edit().putString(PREF_CATEGORIES, categories).apply();

                Calendar currentDate = Calendar.getInstance();
                Calendar dueDate = Calendar.getInstance();

                dueDate.set(Calendar.HOUR_OF_DAY, 8);
                dueDate.set(Calendar.MINUTE, 0);
                dueDate.set(Calendar.SECOND, 0);

                if(dueDate.before(currentDate)) {
                    dueDate.add(Calendar.HOUR_OF_DAY, 24);
                }

                long timeDiff =  dueDate.getTimeInMillis() - currentDate.getTimeInMillis();


                Constraints constraints = new Constraints.Builder()
                        .setRequiredNetworkType(NetworkType.CONNECTED)
                        .build();

                OneTimeWorkRequest oneTimeWorkRequest = new OneTimeWorkRequest.Builder(NotificationWorker.class).setInitialDelay(timeDiff, TimeUnit.MILLISECONDS)
                        .setConstraints(constraints)
                        .addTag("TAG_OUTPUT").build();


                WorkManager.getInstance().enqueue(oneTimeWorkRequest);

            }
        });
    }

-NotificationActivity->布局

“布局”

-NotificationWorker

public class NotificationWorker extends Worker {

    private SharedPreferences mPreference;
    private String keyword;
    private String categories;
    private ResultModel resultModel;
    private ResultContract.Model.OnFinishedListener onFinishedListener;
    private int numberOfArticle;


    public NotificationWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
        super(context, workerParams);
    }

    @NonNull
    @Override
    public Result doWork() {

        mPreference = getApplicationContext().getSharedPreferences(NotificationActivity.PREFERENCE_FILE, MODE_PRIVATE);

        keyword = mPreference.getString(NotificationActivity.PREF_KEYWORD, null);
        categories = mPreference.getString(NotificationActivity.PREF_CATEGORIES, null);


        resultModel = new ResultModel();

        numberOfArticle = resultModel.getResultListWithoutDate(onFinishedListener, 1, keyword, categories);

        displayNotification(keyword);

        return Result.success();
    }


    private void displayNotification(String keyword) {

     NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(NOTIFICATION_SERVICE);

     if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
         NotificationChannel channel = new NotificationChannel("simplifiedcoding", "simplifiedcoding", NotificationManager.IMPORTANCE_DEFAULT);
         assert notificationManager != null;
         notificationManager.createNotificationChannel(channel);
     }

     NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext(), "simplifiedcoding")
             .setContentTitle("Articles sur : " + keyword)
             .setContentText("Nombre d'articles trouvés : " + numberOfArticle)
             .setPriority(NotificationCompat.PRIORITY_DEFAULT)
             .setSmallIcon(R.drawable.ic_launcher_background);

        assert notificationManager != null;
        notificationManager.notify(1, builder.build());

    }
}

如果需要更多信息,请告诉我,感谢谁会帮助我

android notifications android-notifications android-workmanager periodicity
1个回答
0
投票

您可以通过3种方法解决它。

第一:

[用户警报管理器,并把它放在IF中,所以检查活动仍在进行中,因此,如果您的应用已打开,它将起作用。您可以从下面的Google文档链接中获取更多信息:

AlarmManager Docs

第二:

您可以使用带有任务的计时器来创建通知,您可以检查活动是否再次存在,但是更好的用法是在前台服务上创建计时器。

第三:

甚至在您需要它时,也可以从服务器使用PushNotification。文档和信息(如果在下面链接):

Push Notification - One Signal

注意:

我建议您使用第三种方式解决问题。

具有良好的编码,别忘了给我投票;)

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