只是被奇怪的东西卡住了。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];
}
并且由于无法识别的选择器发送到实例错误而崩溃。上面的代码有什么问题?
提前致谢
最佳答案
由于您的方法被声明为
-(void)updateImageButton
相应的选择器为
@selector(updateImageButton)
,不带冒号。更改:[self performSelectorOnMainThread:@selector(updateImageButton:)
withObject:nil
waitUntilDone:YES];
至
[self performSelectorOnMainThread:@selector(updateImageButton)
withObject:nil
waitUntilDone:YES];
它应该工作。
关于objective-c - performSelectorOnMainThread奇怪,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/6056420/