//2秒后开始执行testMethod方法
[self performSelector:@selector(testMethod:) withObject:@"a" afterDelay:2];
//取消执行方法，必须与调用方法的参数一致，否则不能取消成功
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(testMethod:) object:@"a"];
//2秒后开始执行testMethod方法
[self performSelector:@selector(testMethod:) withObject:@"a" afterDelay:2];
//取消执行方法，必须与调用方法的参数一致，否则不能取消成功
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(testMethod:) object:@"a"];
(void)performSelector:(SEL)aSelector withObject:(nullable...
//2秒后开始执行testMethod方法[self performSelector:@selector(test...
performSelector和cancel一定要在同一个线程中操作，否则是没办法取消成功的
本文标题：cancelPreviousPerformRequestsWit
本文链接：https://www.haomeiwen.com/subject/kdysbttx.html
网友评论