Question

您在我的应用中做了JobScheduler的示例。这就是我发起它的方式

jobScheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
ComponentName jobService = new ComponentName(getPackageName(),
        MyJobService.class.getName());
JobInfo jobInfo = new JobInfo.Builder(MYJOBID, jobService)
        .setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY)
        .setExtras(bundle).build();
jobScheduler.schedule(jobInfo);

我在JobService中展示了祝酒词：

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public class MyJobService extends JobService {

public MyJobService() {
}

@Override
public boolean onStartJob(JobParameters params) {

   // UtilityMethods.showToast(this,params.getExtras().getString("json"));
    Toast.makeText(this,"test",Toast.LENGTH_SHORT).show();

    return false;
}

@Override
public boolean onStopJob(JobParameters params) {
    UtilityMethods.showToast(this,"onStop()");
    return false;
}

}

即使我尝试关闭互联网并从后台杀死应用程序，这工作也很好。然后我尝试在我的一个库中构建类似的东西。我在库中编写了相同的代码，我从我的应用程序MainActivity中调用它。但这一次，当我从后台杀死应用程序时，它停止工作。谁能告诉我为什么？

我初始化的MainActivity

JobScheduler jobScheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
ComponentName jobService = new ComponentName(getPackageName(),
        MyJobService.class.getName());
JobInfo jobInfo = new JobInfo.Builder(MYJOBID, jobService)
        .setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY).build();
jobScheduler.schedule(jobInfo);

当我从onCreate启动它时它正在工作，如果我从回调函数（）启动它就无法工作。

非常感谢任何帮助。

Answer 1

让此返回true

@Override
public boolean onStartJob(JobParameters params) {

   // UtilityMethods.showToast(this,params.getExtras().getString("json"));
    Toast.makeText(this,"test",Toast.LENGTH_SHORT).show();

    return true;
}

并从此处开始一个新线程（因为这只在mainthread上执行）。

onStartJob

added in API level 21
boolean onStartJob (JobParameters params)
Override this method with the callback logic for your job. Any such logic needs to be performed on a separate thread, as this function is executed on your application's main thread.

Parameters
params  JobParameters: Parameters specifying info about this job, including the extras bundle you optionally provided at job-creation time.
Returns
boolean True if your service needs to process the work (on a separate thread). False if there's no more work to be done for this job.

Answer 2

Android> 7自动节省电池电量。您必须启用该应用的省电功能停止

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            Intent intent = new Intent();
            String packageName = getPackageName();
            PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
            if (!pm.isIgnoringBatteryOptimizations(packageName)) {
                intent.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
                intent.setData(Uri.parse("package:" + packageName));
                startActivity(intent);
            }
        }

将此添加到AndroidManifest.xml

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

如果应用程序杀死了android，Job Scheduler将停止工作

2 个答案: