Ios 如何在没有标题的情况下为UITabBarItems设置图像？

我有一个应用程序，其中我正在以编程方式为

uitabaritems

添加图像，如下所示

    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，它会在选项卡栏底部留下一个空白，将图像拉到选项卡栏上方，因此我不需要标题，但需要将图像完全放在选项卡栏中。 有人能在这方面指导我吗

请尝试以下代码：

[[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"]];

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完成此操作后，此技巧对我有效。感谢

SetFinishedSelecteImage在iOS 7中已被弃用，而且它也无法解决此问题

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