Android WorkManager 是一個(gè)用于 Android 開發(fā)的后臺(tái)任務(wù)庫,它可以幫助您執(zhí)行需要在滿足某些約束的情況下執(zhí)行的任務(wù),例如網(wǎng)絡(luò)連接、設(shè)備充電等。要優(yōu)化 WorkManager 的任務(wù)調(diào)度,您可以采取以下措施:
WorkRequest request = new WorkRequest.Builder(MyWorker.class)
.setConstraints(new Constraints.Builder()
.setRequiredNetworkType(NetworkType.CONNECTED)
.setRequiresCharging(true)
.build())
.build();
WorkManager.getInstance(context).enqueue(request);
OneTimeWorkRequest request = new OneTimeWorkRequest.Builder(MyWorker.class)
.setConstraints(new Constraints.Builder()
.setRequiredNetworkType(NetworkType.CONNECTED)
.setRequiresCharging(true)
.build())
.build();
WorkManager.getInstance(context).enqueue(request);
PeriodicWorkRequest request = new PeriodicWorkRequest.Builder(MyWorker.class, 15, TimeUnit.MINUTES)
.setConstraints(new Constraints.Builder()
.setRequiredNetworkType(NetworkType.CONNECTED)
.setRequiresCharging(true)
.build())
.build();
WorkManager.getInstance(context).enqueue(request);
OneTimeWorkRequest request = new OneTimeWorkRequest.Builder(MyWorker.class)
.setConstraints(new Constraints.Builder()
.setRequiredNetworkType(NetworkType.CONNECTED)
.setRequiresCharging(true)
.build())
.build();
WorkManager.getInstance(context).enqueueUniqueWork("uniqueWorkName", ExistingWorkPolicy.REPLACE, request);
LiveData<List<WorkInfo>> workInfoList = WorkManager.getInstance(context).getWorkInfoByIdLiveData(request.getId());
workInfoList.observe(this, workInfo -> {
if (workInfo != null && workInfo.getState() == WorkInfo.State.RUNNING) {
// 任務(wù)正在運(yùn)行
} else if (workInfo != null && workInfo.getState() == WorkInfo.State.COMPLETED) {
// 任務(wù)已完成
}
});
WorkManager.getInstance(context).cancelWorkById(request.getId());
// 或者
WorkManager.getInstance(context).cancelAllWorkByTag("tag");
通過以上方法,您可以優(yōu)化 Android WorkManager 的任務(wù)調(diào)度,確保任務(wù)在滿足特定條件時(shí)執(zhí)行,并避免不必要的重復(fù)任務(wù)。