performSelectorOnMainThread奇怪

Question

只是卡住了奇怪的事情。我有以下代碼：

-(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]; 
} 

它崩潰，發生了無法識別的選擇器發送實例錯誤。上面的代碼有什麼問題？

預先感謝

Answer 1

由於被宣佈你的方法

-(void)updateImageButton 

相應選擇器是@selector(updateImageButton)末尾沒有結腸。更改：

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

到

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

，它應該工作。