Android 新架构组件 -- WorkManager

Android WorkManager

compile "android.arch.work:work-runtime:1.0.0-alpha02"

继承Worker类并实现doWork()方法

public class MineWorker extends Worker {
    @NonNull
    @Override
    public WorkerResult doWork() {
        LogUtils.i("MineWorker--doWork");
        return WorkerResult.SUCCESS;
    }
}

想要该Worker执行，需要调用WorkManager将该Worker添加到队列中

WorkManager workManager = WorkManager.getInstance();
        OneTimeWorkRequest oneTimeWorkRequest = new OneTimeWorkRequest.Builder(MineWorker.class).build();
        workManager.enqueue(oneTimeWorkRequest);

结果输出：

MineWorker--doWork

在手机充电时，并且有网的情况下执行某个任务：

//        在手机充电时，并且有网的情况下执行某个任务
        Constraints constraints = new Constraints.Builder()
                .setRequiredNetworkType(NetworkType.CONNECTED)
                .setRequiresCharging(true)
                .build();
        OneTimeWorkRequest constraintsOneTimeWorkRequest1 = new OneTimeWorkRequest.Builder(MineWorker.class).setConstraints(constraints).build();
        workManager.enqueue(constraintsOneTimeWorkRequest1);

顺序的去执行不同的OneTimeWorker :

//        OneTimeWorker顺序执行
        OneTimeWorkRequest workA = new OneTimeWorkRequest.Builder(MineWorker.class).build();
        OneTimeWorkRequest workB = new OneTimeWorkRequest.Builder(MineWorker.class).build();
        OneTimeWorkRequest workC = new OneTimeWorkRequest.Builder(MineWorker.class).build();
        OneTimeWorkRequest workD = new OneTimeWorkRequest.Builder(MineWorker.class).build();
        OneTimeWorkRequest workE = new OneTimeWorkRequest.Builder(MineWorker.class).build();
        WorkContinuation chain1 = WorkManager.getInstance()
                .beginWith(workA)
                .then(workB);
        WorkContinuation chain2 = WorkManager.getInstance()
                .beginWith(workC)
                .then(workD);
        WorkContinuation chain3 = WorkContinuation
                .combine(chain1, chain2)
                .then(workE);
        chain3.enqueue();

定期的去执行某一个worker：

//        定期执行
        Constraints constraints = new Constraints.Builder()
                .setRequiredNetworkType(NetworkType.CONNECTED)
                .setRequiresCharging(true)
                .build();
        PeriodicWorkRequest periodicWorkRequest = new PeriodicWorkRequest
                .Builder(MineWorker.class, 3, TimeUnit.SECONDS)
                .setConstraints(constraints)
                .build();
        workManager.enqueue(periodicWorkRequest);