程序包 ohos.app.dispatcher.task

接口 Revocable

public interface Revocable

Revokes an asynchronous task that is dispatched by calling TaskDispatcher.asyncDispatch(java.lang.Runnable), TaskDispatcher.delayDispatch(java.lang.Runnable, long), or TaskDispatcher.asyncGroupDispatch(ohos.app.dispatcher.Group, java.lang.Runnable).

The following example shows how to use this interface to revoke an asynchronous task:

 void postTaskAndRevoke(Context context) {
     TaskDispatcher dispatcher = context.getUITaskDispatcher();
     System.out.println("1");
     Revocable revocable = dispatcher.delayDispatch(new Runnable(){
         System.out.println("delay dispatch");
     }, 10);
     boolean revoked = revocable.revoke();
     System.out.println(revoked);
 }

 // A typical result is :
 // true
 

从以下版本开始:

1

方法概要

限定符和类型	方法	说明
boolean	revoke()	Revokes a task associated with the Revocable object.

方法详细资料

revoke

boolean revoke()

Revokes a task associated with the Revocable object.

If the task is running or has completed, this method cannot revoke it and returns false.

返回:

Returns true if the revocation is successful; returns false if it fails because the task is running or has completed.

从以下版本开始:

1