java.lang.NoSuchMethodError：没有虚方法getSystemService

Question

我正在尝试实现一个jobcheduler来调用jobservice，它会在每5分钟触发一次，以捕获在特定geoLocation中花费的时间。但是下面的代码适用于Marshmallow及以上版本，但它对棒棒糖及以下版本造成了冲击。这是我的代码 - >

ComponentName serviceComponent = new ComponentName(context, SyncDbToServerJobService.class);
        JobInfo.Builder builder = new JobInfo.Builder(0, serviceComponent);
        PersistableBundle bundle = new PersistableBundle();
        bundle.putString(Constants.ENTERED_TIME, enteredTime);
        builder.setPeriodic(intervalMillis).setExtras(bundle).setPersisted(true);
        builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED); // require unmetered network
        builder.setRequiresDeviceIdle(true); // device should be idle
        builder.setRequiresCharging(false); // we don't care if the device is charging or not
        JobScheduler jobScheduler = context.getSystemService(JobScheduler.class);
        jobScheduler.schedule(builder.build());

这就像制造错误 - >

JobScheduler jobScheduler = context.getSystemService(JobScheduler.class);

这是我的日志错误 - >

04-19 11:38:25.358 1986-4658/com.eonelectric.eon E/AndroidRuntime: FATAL EXCEPTION: IntentService[GeofenceTransitionsIS]
                                                               Process: com.eonelectric.eon, PID: 1986
                                                               java.lang.NoSuchMethodError: No virtual method getSystemService(Ljava/lang/Class;)Ljava/lang/Object; in class Landroid/content/Context; or its super classes (declaration of 'android.content.Context' appears in /system/framework/framework.jar)
                                                                   at com.eonelectric.eon.GeneralUtil.startSyncAlarm(GeneralUtil.java:440)
                                                                   at com.eonelectric.eon.beatTrack.GeofenceTransitionsIntentService.getGeofenceTransitionDetails(GeofenceTransitionsIntentService.java:137)
                                                                   at com.eonelectric.eon.beatTrack.GeofenceTransitionsIntentService.onHandleIntent(GeofenceTransitionsIntentService.java:96)
                                                                   at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
                                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                   at android.os.Looper.loop(Looper.java:135)
                                                                   at android.os.HandlerThread.run(HandlerThread.java:61)

Answer 1

尝试这个它将适用于棒棒糖

ComponentName jobService =
                new ComponentName(getApplicationContext().getPackageName(), SyncService.class.getName());
JobInfo.Builder builder = new JobInfo.Builder(0, jobService);
builder.setPeriodic(10000);
builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY);
jobScheduler = (JobScheduler) this.getSystemService(JOB_SCHEDULER_SERVICE);
jobScheduler.schedule(builder.build());

Answer 2

如果您的应用针对Android 5.0（API级别21）或更高，Google建议您使用JobScheduler执行后台任务，但getSystemService(serviceClass)已在API级别23中添加。因此，请使用如下：

 JobScheduler jobScheduler = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE)

还包括API 21和22。