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evernote android_job onrunjob()方法从未调用

android-job job-scheduling android-studio android

Shashwat Gupta · 技术社区 · 5 年前

我已经在我的android应用程序中通过

implementation 'com.evernote:android-job:1.2.6'

我定义了signleton来获取我在应用程序类中通过

 JobManager.create(this).addJobCreator(new CreatingJob());

我有两门课 创建作业类

  public class CreatingJob implements JobCreator {
    @Nullable
    @Override
    public Job create(@NonNull String tag) {
        switch (tag) {
            case SyncMasterDataJOB.TAG:
                return new SyncMasterDataJOB();
        }
        return null;
    }
}

作业类别

    public class SyncMasterDataJOB extends Job  {
    public static final String TAG = "job_note_sync";


    @NonNull
    @Override
    protected Result onRunJob(@NonNull Params params) {
        //Doing my Task HERE
        MyLog.ShowELog("JOB STARTED", "Job Has been Started");
        MyToast.Lmsg(getContext(), "Job Has been Started");
        return Result.SUCCESS;
    }


    public static void scheduleJob() {
        Set<JobRequest> jobRequests = JobManager.instance().getAllJobRequestsForTag(SyncMasterDataJOB.TAG);
        if (!jobRequests.isEmpty()) {
            return;
        }
        new JobRequest.Builder(SyncMasterDataJOB.TAG)
              .setPeriodic(MIN_INTERVAL, MIN_FLEX)
               .build()
                .schedule();
    }


}

但问题是我的onrunjob()方法从未被调用。我对安卓乔布斯还不熟悉。谁能告诉我哪里做错了?

我正在参考 here

2 回复 | 直到 5 年前

Jay Dangar Yogita Singh Chauhan 5 年前

作业创建者类->

public class CreateJob implements JobCreator {

    private Context context;

    public CreateJob(Context context){
        this.context = context;
    }

    //  Here we have to register each of the jobs...
    @Nullable
    @Override
    public Job create(@NonNull String tag) {
        switch (tag) {
            case CurrentWeatherUpdateJob.TAG:
                return new CurrentWeatherUpdateJob();
            default:
                return null;
        }
    }
}

这是我注册我的JobCreator的地方。

//  To use StartingPoint Anywhere in our app
//  else you have to Instantiate StartingPoint inside every Activities on create...
public class StartingPoint extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        //  Create Job is a class that registers all the Jobs...
        JobManager.create(this).addJobCreator(new CreateJob(getApplicationContext()));

    }
}

这是您的作业子类->

public class CurrentWeatherUpdateJob extends Job {

    public static final String TAG = "CurrentWeatherUpdateJob";

    //  Update Weather Data every 15 Minutes...
    private static final int CURRENTWEATHERUPDATE_TIMEINTERVAL = 15 * 60 * 1000;

    //  Interface that provides Data...
    private ApiInterface service;

    //  For Celcius - metric / Kelvin - imperial
    private String UnitType = "metric";

    public CurrentWeatherUpdateJob() {
        service = APIClient.getRetrofit_Weather().create(ApiInterface.class);
    }

    private static void ScheduleJobEvery15Minutes() {
        //  Scheduling Job After every 15 minutes...
        new JobRequest.Builder(TAG)
                .setPeriodic(CURRENTWEATHERUPDATE_TIMEINTERVAL)
                .setRequiredNetworkType(JobRequest.NetworkType.CONNECTED)
                .setRequirementsEnforced(true)
                .setUpdateCurrent(true)
                .build()
                .schedule();
    }

    // implement your onRunJob method here
}

从活动中调用scheduleJobEvery15minutes()方法。

Jay Dangar Yogita Singh Chauhan 5 年前

问题不在您的代码中,而在作业周期的设置中。Evernote仅适用于周期作业>=15分钟,而您使用1分钟作为运行作业的周期。请参阅evenote作业的文档,因为它是基于作业调度程序的,它对运行定期作业具有相同的约束。

private void schedulePeriodicJob() {
    int jobId = new JobRequest.Builder(DemoSyncJob.TAG)
            .setPeriodic(TimeUnit.MINUTES.toMillis(15), TimeUnit.MINUTES.toMillis(5))
            .build()
            .schedule();
}

这是他们放在图书馆文档中的代码。请看看这个。-gt;

为什么周期性工作间隔不能小于15分钟? 这个库是3个不同api的子集。由于android nougat,周期作业的最小间隔是15分钟。尽管前nougat设备支持较小的间隔,但选择最小公共值作为此库的最小值,以便周期性作业在所有设备上以相同的频率运行。

带有android nougat的jobscheduler允许设置较小的间隔,但该值会自动调整并记录警告。相反,这个库抛出一个异常,这样行为不端的作业就会被及早捕获。你可以在这里了解更多。

这是适合我的代码->

每15分钟更新一次天气数据…

private static final int CURRENTWEATHERUPDATE_TIMEINTERVAL = 15 * 60 * 1000;

  private static void ScheduleJobEvery15Minutes() {
        //  Scheduling Job After every 15 minutes...
        new JobRequest.Builder(TAG)
                .setPeriodic(CURRENTWEATHERUPDATE_TIMEINTERVAL)
                .setRequiredNetworkType(JobRequest.NetworkType.CONNECTED)
                .setRequirementsEnforced(true)
                .setUpdateCurrent(true)
                .build()
                .schedule();
    }

编辑-GT; 还要检查jobcreator类,您将返回这样的空值,

public class CreatingJob implements JobCreator {
    @Nullable
    @Override
    public Job create(@NonNull String tag) {
        switch (tag) {
            case SyncMasterDataJOB.TAG:
                return new SyncMasterDataJOB();
        }
        return null;
    }

将代码更改为此->

public class CreatingJob implements JobCreator {
        @Nullable
        @Override
        public Job create(@NonNull String tag) {
            switch (tag) {
                case SyncMasterDataJOB.TAG:
                    return new SyncMasterDataJOB();
                case default:
                    return null;
            }
        }