如何在没有标题的情况下为 UITabBarItems 设置图像？

Question

我有一个应用程序，我在其中以这样的编程方式为UITabBarItems 添加图像..

    UIImage *selectedImage0 = [UIImage imageNamed:@"home_hvr.png"];
    UIImage *unselectedImage0 = [UIImage imageNamed:@"home.png"];

    UIImage *selectedImage1 = [UIImage imageNamed:@"star_hvr.png"];
    UIImage *unselectedImage1 = [UIImage imageNamed:@"star.png"];



    UITabBar *tabBar = self.tabbarcontroller.tabBar;
    self.tabbarcontroller.tabBar.barStyle = UIBarStyleBlack;
    self.tabbarcontroller.tabBar.translucent = NO;
    UITabBarItem *item0 = [tabBar.items objectAtIndex:0];
    UITabBarItem *item1 = [tabBar.items objectAtIndex:1];

    [item0 setSelectedImage:[selectedImage0 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
    [item0 setImage:[unselectedImage0 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];

    [item1 setSelectedImage:[selectedImage1 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
    [item1 setImage:[unselectedImage1 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];

由于 tabbaritems 没有任何标题，它会在标签栏底部带来一个空白区域，将图像拉到标签栏上方，我不需要标题，但需要将我的图像完全放在标签栏内。 任何机构都可以指导我吗？

Answer 1

UITabBarItem.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);

这个技巧对我有用吗。谢谢

Answer 2

试试下面的代码：

[[self.tabBarController.tabBar.items objectAtIndex:0] setFinishedSelectedImage:[UIImage imageNamed:@"offer_btn_active.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"offer_btn.png"]];

 [[self.tabBarController.tabBar.items objectAtIndex:1] setFinishedSelectedImage:[UIImage imageNamed:@"merchant_btn_active.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"merchant_btn.png"]];