我有tabBarItem icon的问题.这是我的故事板的一部分的屏幕截图.
有一个基本的viewController与一些按钮.当其中一个按钮被触摸时,会出现一个带有三个标签的tabBarController.在iOS 8中,tabBarItems的图标最初不会出现.如果我更改了视图控制器,则会出现上一个和当前视图控制器的两个图标.如果我选择第三个选项卡,然后出现tabBarItems的所有图标.这是我的问题的屏幕截图：
TabBarController的第一个外观：
如果我改变标签：
这是我用来将tabBarItems的图标(所有图标都是30×30)设置为TabBarController的第一个viewController的viewDidLoad方法的代码：
[[[self.tabBarController.viewControllers objectAtIndex:0] tabBarItem] setFinishedSelectedImage:[UIImage imageNamed:@"1d1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"1b1.png"]]; [[[self.tabBarController.viewControllers objectAtIndex:1] tabBarItem] setFinishedSelectedImage:[UIImage imageNamed:@"2d1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"2b1.png"]]; [[[self.tabBarController.viewControllers objectAtIndex:2] tabBarItem] setFinishedSelectedImage:[UIImage imageNamed:@"3d1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"3b1.png"]];
以下是适用于iOS 7的屏幕截图：
谁能帮我这个？？
解决方法
经过几个小时的搜索和阅读不同的答案,包括@ Zala的答案,这部分代码进入了TabBarController的第一个viewController的viewDidLoad,并最终起作用.
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)
{
UITabBarItem *tabBarItem = [self.tabBarController.tabBar.items objectAtIndex:0];
UIImage *unselectedImage = [UIImage imageNamed:@"1b1.png"];
UIImage *selectedImage = [UIImage imageNamed:@"1d1.png"];
[tabBarItem setimage: [unselectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
[tabBarItem setSelectedImage:[selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
UITabBarItem *tabBarItem1 = [self.tabBarController.tabBar.items objectAtIndex:1];
UIImage *unselectedImage1 = [UIImage imageNamed:@"2b1.png"];
UIImage *selectedImage1 = [UIImage imageNamed:@"2d1.png"];
[tabBarItem1 setimage: [unselectedImage1 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
[tabBarItem1 setSelectedImage: [selectedImage1 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
UITabBarItem *tabBarItem2 = [self.tabBarController.tabBar.items objectAtIndex:2];
UIImage *unselectedImage2 = [UIImage imageNamed:@"3b1.png"];
UIImage *selectedImage2 = [UIImage imageNamed:@"3d1.png"];
[tabBarItem2 setimage: [unselectedImage2 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
[tabBarItem2 setSelectedImage:[selectedImage2 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
[tabBarItem setTitle:@"Φωτογραφίες"];
[tabBarItem2 setTitle:@"360° Φωτογραφία"];
[tabBarItem1 setTitle:@"Βίντεο"];
}
else
{
[[[self.tabBarController.viewControllers objectAtIndex:0] tabBarItem] setFinishedSelectedImage:[UIImage imageNamed:@"1d1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"1b1.png"]];
[[[self.tabBarController.viewControllers objectAtIndex:1] tabBarItem] setFinishedSelectedImage:[UIImage imageNamed:@"2d1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"2b1.png"]];
[[[self.tabBarController.viewControllers objectAtIndex:2] tabBarItem] setFinishedSelectedImage:[UIImage imageNamed:@"3d1.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"3b1.png"]];
[[[self.tabBarController.viewControllers objectAtIndex:0] tabBarItem] setTitle:@"Φωτογραφίες"];
[[[self.tabBarController.viewControllers objectAtIndex:2] tabBarItem] setTitle:@"360° Φωτογραφία"];
[[[self.tabBarController.viewControllers objectAtIndex:1] tabBarItem] setTitle:@"Βίντεο"];
}