大佬教程收集整理的这篇文章主要介绍了UILabel没有在iOS8中显示子视图，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
如果我使用此代码在iOS 8中使用UILabel用于显示UILabel和子视图UIButton
UILabel *downLabel = [[UILabel alloc]init]; downLabel.frame = CGRectMake(0,SCREEN_HEIGHT*0.92,SCREEN_WIDTH,SCREEN_HEIGHT*0.08 ); [downLabel setBACkgroundColor:[UIColor colorWithRed:(66/255.f) green:(67/255.f) blue:(63/255.f) alpha:1]]; downLabel.userInteractionEnabled = YES; [self.view addSubview:downLabel]; UIButton *downbtnobj = [[UIButton alloc]initWithFrame:CGRectMake(SCREEN_WIDTH*0.68,downLabel.frame.size.height/10,SCREEN_WIDTH*0.30,downLabel.frame.size.height/1.25)]; UIImage *btndownImage = [UIImage imagenamed:@"img 3.png"]; [downbtnobj setImage:btndownImage forState:UIControlStateNormal]; [downbtnobj addTarget:self action:@SELEctor(bulleTinButtonClicked) forControlEvents:UIControlEventTouchUpInside]; [downLabel addSubview:downbtnobj];
现在您只能看到UILabel正在显示,但UILabel上没有显示按钮.
如果我用UIView取代UILabel那么它就显得很完美了.
UIView *downLabel = [[UIView alloc]init]; downLabel.frame = CGRectMake(0,SCREEN_HEIGHT*0.08 ); [downLabel setBACkgroundColor:[UIColor colorWithRed:(66/255.f) green:(67/255.f) blue:(63/255.f) alpha:1]]; downLabel.userInteractionEnabled = YES; [self.view addSubview:downLabel]; UIButton *downbtnobj = [[UIButton alloc]initWithFrame:CGRectMake(SCREEN_WIDTH*0.68,downLabel.frame.size.height/1.25)]; UIImage *btndownImage = [UIImage imagenamed:@"img 3.png"]; [downbtnobj setImage:btndownImage forState:UIControlStateNormal]; [downbtnobj addTarget:self action:@SELEctor(bulleTinButtonClicked) forControlEvents:UIControlEventTouchUpInside]; [downLabel addSubview:downbtnobj];
在这段代码中你可以看到我只用UIView替换UILabel.现在按钮显示.
可以帮助为什么子视图没有在iOS8中的UILabel上显示
UILabel *downLabel = [[UILabel alloc]init]; downLabel.frame = CGRectMake(0,SCREEN_HEIGHT*0.08 ); [downLabel layoutIfNeeded]; [downLabel setBACkgroundColor:[UIColor colorWithRed:(66/255.f) green:(67/255.f) blue:(63/255.f) alpha:1]]; downLabel.userInteractionEnabled = YES; [self.view addSubview:downLabel];
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