將Android Lollipop的JobScheduler向后移植至API 10+

Android棒棒糖的的jobscheduler反向移植到API 10+。所有的jobscheduler功能已實現。然而，這個庫一直沒有經過充分測試的，所以我會建議不要在此時在生產中使用。我們不能保證這不會耗盡你的電池或導致設備發生爆炸。

用法

The api is identical to the officialJobScheduler, the only differences will be what you import.

First create a service to run your job.

import me.tatarka.support.job.JobParameters;
import me.tatarka.support.job.JobService;

/**
 * Service to handle callbacks from the JobScheduler. Requests scheduled with the JobScheduler
 * ultimately land on this service's "onStartJob" method.
 */
public class TestJobService extends JobService {
  @Override
  public boolean onStartJob(JobParameters params) {
    // Start your job in a seperate thread, calling jobFinished(params, needsRescheudle) when you are done.
    // See the javadoc for more detail.
    return true;
  }

  @Override
  public boolean onStopJob(JobParameters params) {
    // Stop the running job, returing true if it needs to be recheduled.
    // See the javadoc for more detail.
    return true;
  }

Then use the JobScheduler to schedule the job.

import me.tatarka.support.job.JobInfo;
import me.tatarka.support.job.JobScheduler;
import me.tatarka.support.os.PersistableBundle;

// Get an instance of the JobScheduler, this will delegate to the system JobScheduler on api 21+ 
// and to a custom implementataion on older api levels.
JobScheduler jobScheduler = JobScheduler.getInstance(context);

// Extras for your job.
PersitableBundle extras = new PersitableBundle();
extras.putString("key", "value");

// Construct a new job with your service and some constraints.
// See the javadoc for more detail.
JobInfo job = new JobInfo.Builder(0 /*jobid*/, new ComponentName(context, TestJobService.class))
  .setMinimumLatency(1000)
  .setOverrideDeadline(2000)
  .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
  .setRequiresCharging(true)
  .setExtras(extras)
  .build();

jobScheudler.scheduleJob(job);

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