如何删除UITabBarItem selectionImage填充？ [英] How do I remove UITabBarItem selectionImage padding?

问题描述

我通过UITabBar外观将SelectionIndicatorImage设置为可伸缩图像（以适应各种设备宽度）：

I am setting the SelectionIndicatorImage as a stretchable image (to accommodate for various device widths) via UITabBar appearance:

UIImage *selectedImage = [[UIImage imageNamed:@"SelectedTab"] stretchableImageWithLeftCapWidth:0 topCapHeight:0];
[[UITabBar appearance] setSelectionIndicatorImage:selectedImage];

结果我在屏幕边缘获得了2pt填充。我基本上试图使用选择指标作为当前所选UITabBarItem的背景。

As a result I get a 2pt padding on the screen edges. I am basically trying to use selection indicator as a background for currently selected UITabBarItem.

http://i.stack.imgur.com/qFHEk.png

什么是简单的解决方法这个？

What would be an easy way to solve this?

推荐答案

如果你想在你的应用程序中使用带有选择和取消选择功能的UITabBarController那么你应该这个代码

If you want to use UITabBarController in your app with selection and unselection feature then you should this code

[[self.tabBarController tabBar] setBackgroundImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"bg_tabBar" ofType:@"png"]]];
[[self.tabBarController tabBar] setSelectionIndicatorImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"bg_tabItem_selected" ofType:@"png"]]];

NSArray *arrTabItems = [[self.tabBarController tabBar] items];
UITabBarItem *tabBarItem = [arrTabItems objectAtIndex:0];
[tabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"img_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:@"img_unselected.png"]];
[tabBarItem setImageInsets:UIEdgeInsetsMake(5, 5, 0, 5)];

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