的iOS UITabBarItem图像selectedImage和图像显示不正确

Question

的Xcode 8.2.1

- (instancetype)init { 
    if (self = [super init]) { 
     self.title = self.localStringModel.tab_title_market; 
     self.tabBarItem.image = [UIImage imageName:@"unselected"]; 
     self.tabBarItem.selectedImage =[UIImage imageName:@"selected"]; 
    } 
    return self; 
} 

描述： 当我未被选择的tabBarItem的unselectedIamge车灯不能显示。

图片：

它已经困扰我很久了，我尝试使用UIImageRenderingModeAlwaysOriginal但不行，顺便说一下我的图像资源的“PDF”，谁能帮助我？

Answer 1

目标C

@interface BaseClassVC(){ 
    UITabBarController *tabBarController; 
} 
@end 
@implementation BaseClassVC 
- (void)viewDidLoad { 
    [super viewDidLoad]; 
    [self setTabBarItemAction]; 
} 
-(void)setTabBarItemAction{ 


    UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Home" bundle:[NSBundle mainBundle]]; 
    // UITabBarController *tabBarController = (UITabBarController *)[storyBoard instantiateViewControllerWithIdentifier:@"Hometab"]; 
    tabBarController = (UITabBarController *)[storyBoard instantiateViewControllerWithIdentifier:@"Hometab"]; 


    // Assign tab bar item with titles 
    UITabBar *tabBar = tabBarController.tabBar; 
    UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0]; 
    UITabBarItem *tabBarItem2 = [tabBar.items objectAtIndex:1]; 
    UITabBarItem *tabBarItem3 = [tabBar.items objectAtIndex:2]; 
    UITabBarItem *tabBarItem4 = [tabBar.items objectAtIndex:3]; 
    UITabBarItem *tabBarItem5 ;///= [tabBar.items objectAtIndex:4]; 


    tabBarItem1.title = @"Home"; 
    tabBarItem2.title = @"My cards"; 
    tabBarItem3.title = @"Withdraw Locations"; 
    tabBarItem4.title = @"Taxi"; 

    tabBarItem5.title = @"More.."; 

    tabBarItem3.badgeValue = @"0"; 
    tabBarItem4.badgeValue = @"0"; 



    [tabBarItem1 setImage:[[UIImage imageNamed:@"icn_tab_home_Normal"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 
    [tabBarItem1 setSelectedImage:[[UIImage imageNamed:@"icn_tab_home_Selected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 

    [tabBarItem2 setImage:[[UIImage imageNamed:@"icn_nearby_deals_tab"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 
    [tabBarItem2 setSelectedImage:[[UIImage imageNamed:@"icn_nearby_deals_tab_Selected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 


    [tabBarItem3 setImage:[[UIImage imageNamed:@"icn_tab_ATM_Normal"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 
    [tabBarItem3 setSelectedImage:[[UIImage imageNamed:@"icn_tab_ATM_Selected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 

    [tabBarItem4 setImage:[[UIImage imageNamed:@"icn_tab_Taxi_Normal"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 
    [tabBarItem4 setSelectedImage:[[UIImage imageNamed:@"icn_tab_Taxi_Selected"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 

    [tabBarItem5 setImage:[[UIImage imageNamed:@"icn_tab_more_Normal"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 
    [tabBarItem5 setSelectedImage:[[UIImage imageNamed:@"icn_tab_more_Normal"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]]; 



    tabBarController.tabBar.translucent = false; 

    [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: TABBAR_NORMAL_TEXT_COLOURS, NSForegroundColorAttributeName, 
                 nil] forState:UIControlStateNormal]; 
    [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: 
                 TABBAR_SELECTED_TEXT_COLOURS, NSForegroundColorAttributeName, 
                 nil] forState:UIControlStateSelected]; 



    [[UITabBar appearance] setBarTintColor:ThemeColor]; 
    UIImage *whiteBackground = [Utility imageWithColor:TABBAR_SELECTED_COLOURS]; 
    [[UITabBar appearance] setSelectionIndicatorImage:whiteBackground]; 
    tabBarController.tabBar.translucent = false; 



    /* 
    [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: 
    [UIColor whiteColor], NSForegroundColorAttributeName, 
    nil] forState:UIControlStateNormal]; 
    UIColor *titleHighlightedColor = [UIColor colorWithRed:153/255.0 green:192/255.0 blue:48/255.0 alpha:1.0]; 
    [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: 
    titleHighlightedColor, NSForegroundColorAttributeName, 
    nil] forState:UIControlStateHighlighted]; 
    */ 



    [self.navigationController showViewController:tabBarController sender:nil]; 
    // [self presentViewController:tabBarController animated:YES completion:nil]; 



} 

雨燕2.3

override func viewDidLoad() { 
     super.viewDidLoad() 
      methodTabBarController() 

} 



extension BaseClassVC { 

    func methodTabBarController() -> Void{ 
     let storyboard = UIStoryboard(name: "HomePage", bundle: NSBundle.mainBundle()) 
     let tabBarController:UITabBarController = (storyboard.instantiateViewControllerWithIdentifier("idTabBarHometab") as? UITabBarController)! 
     methodCustomtabBar(tabBarController) 
     // presentViewController(tabBarController, animated: true, completion: nil) 

     self.navigationController!.showViewController(tabBarController, sender: nil) 

     // self.navigationController?.pushViewController(tabBarController, animated: true) 

    } 

    func methodCustomtabBar(tabBarController: UITabBarController) -> Void{ 

     // Assign tab bar item with titles 
     let tabBar: UITabBar = tabBarController.tabBar 
     let tabBarItem1: UITabBarItem = tabBar.items![0] as UITabBarItem 
     let tabBarItem2: UITabBarItem = tabBar.items![1] as UITabBarItem 
     let tabBarItem3: UITabBarItem = tabBar.items![2] as UITabBarItem 
     let tabBarItem4: UITabBarItem = tabBar.items![3] as UITabBarItem 

     tabBarItem1.title = "Home" 
     tabBarItem2.title = "Nearby ATM" 
     tabBarItem3.title = "Near By Shops" 
     tabBarItem4.title = "Taxi" 

     tabBarItem2.badgeValue = "0" 
     tabBarItem3.badgeValue = "0" 
     tabBarItem4.badgeValue = "0" 

     tabBarItem1.image = UIImage(named: "icn_tab_home_Normal")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 
     tabBarItem1.selectedImage = UIImage(named: "icn_tab_home_Selected")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 

     tabBarItem2.image = UIImage(named: "icn_tab_withdrawl_location_Normal")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 
     tabBarItem2.selectedImage = UIImage(named: "icn_tab_withdrawl_location_Selected")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 

     tabBarItem3.image = UIImage(named: "icn_tab_nearbyshop_Normal")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 
     tabBarItem3.selectedImage = UIImage(named: "icn_tab_nearbyshop_Selected")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 


     tabBarItem4.image = UIImage(named: "icn_tab_Taxi_Normal")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 
     tabBarItem4.selectedImage = UIImage(named: "icn_tab_Taxi_Selected")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal) 




     // Sets the default color of the icon of the selected UITabBarItem and Title 
     // UITabBar.appearance().tintColor = UIColor.redColor() 

     // Sets the default color of the background of the UITabBar 
     UITabBar.appearance().barTintColor = ThemeColor 

     // Sets the background color of the selected UITabBarItem (using and plain colored UIImage with the width = 1/5 of the tabBar (if you have 5 items) and the height of the tabBar) 
     // UITabBar.appearance().selectionIndicatorImage = UIImage().makeImageWithColorAndSize(UIColor.blueColor(), size: CGSizeMake(tabBar.frame.width/5, tabBar.frame.height)) 

     /* 
     UITabBar.appearance().selectionIndicatorImage = UIImage().makeImageWithColorAndSize(UIColor.blueColor(), size: CGSizeMake(tabBar.frame.width/5, tabBar.frame.height)) 

     // Uses the original colors for your images, so they aren't not rendered as grey automatically. 
     for item in self.tabBar.items as! [UITabBarItem] { 
     if let image = item.image { 
     item.image = image.imageWithRenderingMode(.AlwaysOriginal) 
     } 
     } 
     } 
     */ 


     UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: ColorConstant.TABBARITEMS.setTitleTextNormal], forState:.Normal) 
     UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: ColorConstant.TABBARITEMS.setTitleTextSelected], forState:.Selected) 



    } 



} 

Answer 2

我认为问题在于您的未选定图像在灯光中具有纯白色。尝试使用透明度填充它们，alpha = 0.0。它始终是用于绘制的图像的Alpha通道。

Answer 3

请看看这个。 Change tab bar item selected color in a storyboard

它会解决你的问题。

对UITabBar使用tintColor和unSelectedItemTintColor属性。