performSelectorOnMainThread奇怪

Question

只是卡住了奇怪的事情。我有以下代码：

-(void)ImageDownloadCompleat 
{ 
    [self performSelectorOnMainThread:@selector(updateImageButton:) 
          withObject:nil 
         waitUntilDone:YES]; 
} 

-(void)updateImageButton { 
    NSLog(@"image OKEY"); 
    UIImage *img = [UIImage imageWithContentsOfFile:[NSString stringWithFormat: 
                @"%@/%@.jpg",pathPreview,self.idProducts]]; 
    //images.image = img; 

    [images setBackgroundImage:img forState:UIControlEventTouchUpInside]; 
    [img release]; 
} 

它崩溃，发生了无法识别的选择器发送实例错误。上面的代码有什么问题？

预先感谢

Answer 1

由于被宣布你的方法

-(void)updateImageButton 

相应选择器是@selector(updateImageButton)末尾没有结肠。更改：

[self performSelectorOnMainThread:@selector(updateImageButton:) 
         withObject:nil 
        waitUntilDone:YES]; 

到

[self performSelectorOnMainThread:@selector(updateImageButton) 
         withObject:nil 
        waitUntilDone:YES]; 

，它应该工作。