如何取消 firebase 作业调度程序中的重复作业
How to cancel a recurring job in firebase job dispatcher
我创建了一个循环作业，我想在满足某些条件时取消循环作业。
final Job.Builder builder = dispatcher.newJobBuilder()
.setTag("myJob")
.setService(myJobService.class)
.setRecurring(true)
.setTrigger(Trigger.executionWindow(30, 60));
如何在 firebase 中取消作业？
GitHub 上的自述文件说：
Driver is an interface that represents a component that can schedule,
cancel, and execute Jobs. The only bundled Driver is the
GooglePlayDriver, which relies on the scheduler built-in to Google
Play services.
所以取消是您正在使用的 driver 的一部分。检查 the code of the driver interface 有两种方法可以取消作业：
/**
* Cancels the job with the provided tag and class.
*
* @return one of the CANCEL_RESULT_ constants.
*/
@CancelResult
int cancel(@NonNull String tag);
/**
* Cancels all jobs registered with this Driver.
*
* @return one of the CANCEL_RESULT_ constants.
*/
@CancelResult
int cancelAll();
所以在你的情况下你必须调用：
dispatcher.cancel("myJob");
或
dispatcher.cancelAll();
调度员会为您调用driver对应的方法。如果需要，您也可以直接在 driver myDriver.cancelAll() like it is done in the sample app which comes with the GitHub project.
上调用这些方法
所选方法将return以下常量之一：
public static final int CANCEL_RESULT_SUCCESS = 0;
public static final int CANCEL_RESULT_UNKNOWN_ERROR = 1;
public static final int CANCEL_RESULT_NO_DRIVER_AVAILABLE = 2;
我创建了一个循环作业，我想在满足某些条件时取消循环作业。
final Job.Builder builder = dispatcher.newJobBuilder()
.setTag("myJob")
.setService(myJobService.class)
.setRecurring(true)
.setTrigger(Trigger.executionWindow(30, 60));
如何在 firebase 中取消作业？
GitHub 上的自述文件说：
Driver is an interface that represents a component that can schedule, cancel, and execute Jobs. The only bundled Driver is the GooglePlayDriver, which relies on the scheduler built-in to Google Play services.
所以取消是您正在使用的 driver 的一部分。检查 the code of the driver interface 有两种方法可以取消作业：
/**
* Cancels the job with the provided tag and class.
*
* @return one of the CANCEL_RESULT_ constants.
*/
@CancelResult
int cancel(@NonNull String tag);
/**
* Cancels all jobs registered with this Driver.
*
* @return one of the CANCEL_RESULT_ constants.
*/
@CancelResult
int cancelAll();
所以在你的情况下你必须调用：
dispatcher.cancel("myJob");
或
dispatcher.cancelAll();
调度员会为您调用driver对应的方法。如果需要，您也可以直接在 driver myDriver.cancelAll() like it is done in the sample app which comes with the GitHub project.
所选方法将return以下常量之一：
public static final int CANCEL_RESULT_SUCCESS = 0; public static final int CANCEL_RESULT_UNKNOWN_ERROR = 1; public static final int CANCEL_RESULT_NO_DRIVER_AVAILABLE = 2;