iOS使用NSTimers向选择器发送参数 [英] iOS sending parameter to selector using NSTimers

问题描述

是否可以通过NSTimer向选择器发送参数?

Is there a way to send a parameter to the selector via a NSTimer ?

myTimer =[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(removeTheNote:) userInfo:nil repeats:NO];

      - (void)removeTheNote:(NSString*)note
    {
        NSLog(@"Note %@ ----------- REMOVED!",note);
    }

我知道使用:

myTimer =[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(removeTheNote:myNote) userInfo:nil repeats:NO];

不起作用，所以我问，有办法吗?

doesn't work, so I am asking, is there a way to do this?

推荐答案

您可以为此使用userInfo参数:

myTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(removeTheNote:) userInfo:myNote repeats:NO];

但是您将必须如下修改removeTheNote:

But you will have to modify removeTheNote as follows:

- (void)removeTheNote:(NSTimer *)timer
{
    NSString *note = timer.userInfo;
    NSLog(@"%@", note);
} 

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