ScheduledThreadPoolExecutor.ScheduleAtFixedRate Method
Definition
Important
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Submits a periodic action that becomes enabled first after the
given initial delay, and subsequently with the given period;
that is, executions will commence after
initialDelay, then initialDelay + period, then
initialDelay + 2 * period, and so on.
[Android.Runtime.Register("scheduleAtFixedRate", "(Ljava/lang/Runnable;JJLjava/util/concurrent/TimeUnit;)Ljava/util/concurrent/ScheduledFuture;", "GetScheduleAtFixedRate_Ljava_lang_Runnable_JJLjava_util_concurrent_TimeUnit_Handler")]
public virtual Java.Util.Concurrent.IScheduledFuture? ScheduleAtFixedRate (Java.Lang.IRunnable? command, long initialDelay, long period, Java.Util.Concurrent.TimeUnit? unit);[<Android.Runtime.Register("scheduleAtFixedRate", "(Ljava/lang/Runnable;JJLjava/util/concurrent/TimeUnit;)Ljava/util/concurrent/ScheduledFuture;", "GetScheduleAtFixedRate_Ljava_lang_Runnable_JJLjava_util_concurrent_TimeUnit_Handler")>]
abstract member ScheduleAtFixedRate : Java.Lang.IRunnable * int64 * int64 * Java.Util.Concurrent.TimeUnit -> Java.Util.Concurrent.IScheduledFuture
override this.ScheduleAtFixedRate : Java.Lang.IRunnable * int64 * int64 * Java.Util.Concurrent.TimeUnit -> Java.Util.Concurrent.IScheduledFutureParameters
- command
- IRunnable
the task to execute
- initialDelay
- Int64
the time to delay first execution
- period
- Int64
the period between successive executions
- unit
- TimeUnit
the time unit of the initialDelay and period parameters
Returns
Implements
- Attributes
Exceptions
Remarks
Submits a periodic action that becomes enabled first after the given initial delay, and subsequently with the given period; that is, executions will commence after initialDelay, then initialDelay + period, then initialDelay + 2 * period, and so on.
The sequence of task executions continues indefinitely until one of the following exceptional completions occur: <ul> <li>The task is Future#cancel explicitly cancelled via the returned future. <li>Method #shutdown is called and the #getContinueExistingPeriodicTasksAfterShutdownPolicy policy on whether to continue after shutdown is not set true, or method #shutdownNow is called; also resulting in task cancellation. <li>An execution of the task throws an exception. In this case calling Future#get() get on the returned future will throw ExecutionException, holding the exception as its cause. </ul> Subsequent executions are suppressed. Subsequent calls to Future#isDone isDone() on the returned future will return true.
If any execution of this task takes longer than its period, then subsequent executions may start late, but will not concurrently execute.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.