Nougat - JobScheduler RESULT_SUCCESS 但作业没有输出

Question

我是这样开始工作的：

JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);

    if(scheduler.getPendingJob(JOB_NUMBER) == null) {

        ComponentName componentName = new ComponentName(this, mService.class);
        JobInfo info = new JobInfo.Builder(JOB_NUMBER, componentName)
                .setRequiresCharging(false)
                .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
                .setPersisted(true)
                .setPeriodic(60 * 60 * 1000)
                .build();

        int resultCode = scheduler.schedule(info);
        if (resultCode == JobScheduler.RESULT_SUCCESS) {
            Log.d(TAG, "Service is not running, Job " + String.valueOf(JOB_NUMBER) + " Scheduled.");
        } else {
            Log.d(TAG, "Service is not running, However job scheduling failed.");
        }

    } else{
        Log.d(TAG, "Service is already scheduled.");
    }

在服务中：

@Override
public boolean onStartJob(JobParameters jobParameters) {

    Log.d("Service", "v1.2 Started");

我得到了输出 'Service is running' 而不是 'Service Started'。而且应用程序也没有接收到服务应该发送的广播。

这一切在 Android 8 中完美运行，但在 7 中则不然。

编辑：我猜该服务一定是运行ning，因为当我关闭并重新启动应用程序时，我收到消息 'Service is already scheduled'。那么为什么我看不到我的服务的任何日志输出呢？在牛轧糖中，它会像奥利奥一样直接运行吗？还是我必须等一个小时才能开始？

Answer 1

请试试这个：

// the service class

import android.app.job.JobParameters;
import android.app.job.JobService;
import android.util.Log;

/**
 * JobService to be scheduled by the JobScheduler.
 * start another service
 */
public class mService extends JobService {
    private static final String TAG = "SyncService";

    @Override
    public boolean onStartJob(JobParameters params) {
        Log.d("TAG", "onStartJobb");
        return true;
    }

    @Override
    public boolean onStopJob(JobParameters params) {
        Log.d("TAG", "onStopJob");
        return true;
    }
}


// in main activity

@RequiresApi(api = Build.VERSION_CODES.N)
public void onResume(){
    super.onResume();

    JobScheduler scheduler = getSystemService(JobScheduler.class);

    if(scheduler.getPendingJob(1) == null) {

        ComponentName componentName = new ComponentName(this, mService.class);
        //JobInfo.Builder builder = new JobInfo.Builder(0, serviceComponent);
        JobInfo.Builder info = new JobInfo.Builder(1, componentName)
                .setRequiresCharging(false)
                .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
                .setPersisted(true)
                .setMinimumLatency(1 * 1000)
                .setOverrideDeadline(3 * 1000)
                //.setPeriodic(60 * 60 * 1000)
                //.build()
                ;

        int resultCode = scheduler.schedule(info.build());
        if (resultCode == JobScheduler.RESULT_SUCCESS) {
            Log.d("TAG", "Service is not running, Job " + String.valueOf(1) + " Scheduled.");
        } else {
            Log.d("TAG", "Service is not running, However job scheduling failed.");
        }

    } else{
        Log.d("TAG", "Service is already scheduled.");
    }
}

    // and in manifest

    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <service
        android:name=".mService"
        android:enabled="true"
        android:exported="true"
        android:label="Word service"
        android:permission="android.permission.BIND_JOB_SERVICE">
    </service>

请下载 this 示例并从那里导入 NotificationScheduler 新项目并检查它。请相应地更改您的项目。

我注意到的：

清单条目是：

    android:name=".mService"
    android:permission="android.permission.BIND_JOB_SERVICE"
    ></service>

作业调度程序：

ComponentName serviceName = new ComponentName(getPackageName(), mService.class.getName());

long min = JobInfo.getMinPeriodMillis();
JobInfo.Builder builder = new JobInfo.Builder(JOB_ID, serviceName)
        .setRequiredNetworkType(NETWORK_TYPE_NONE)
        .setRequiresDeviceIdle(false)
        .setPeriodic(5000)
        .setRequiresCharging(false);
builder.setPeriodic(5 * 1000);

JobInfo myJobInfo = builder.build();
JobScheduler jobScheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
jobScheduler.schedule(myJobInfo);

请注意，这里是对 Periodic min interval 的限制，不幸的是它是 15 分钟，当我们将它设置得更小时，SDK 将其更改为 15 分钟，并将 flex interval 设置为 5 分钟，最后我们在作业的调度时间大约 7-8 分钟后开始服务。就是这样）。

这对我有用，

祝你好运）

Nougat - JobScheduler RESULT_SUCCESS 但作业没有输出

Nougat - JobScheduler RESULT_SUCCESS but no output from job

java

android

android-studio

android-studio-3.0