Iphone ios6中的选项卡栏背景色未更改

我在一个项目中工作，我需要在这个项目中实现选项卡栏控制器。我的选项卡栏背景颜色为黑色，为此我使用了以下代码：

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这在ios7中运行良好，但在ios6中没有反映这一行。关于ios6中的tab-bar属性，我还需要实现什么或遗漏什么？任何帮助都将不胜感激。

他们在iOS 7中对颜色做了很多改变。阅读苹果公司的人机界面指南：

代码如下：

//check if this is not iOS 7
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
//your code above except last line
//Tint is background in iOS 6 but text color in iOS 7
self.tabBarController.tabBar.tintColor = [UIColor blackColor];
}else{
//your code above
}

//检查这是否不是iOS 7
if（楼层（NSFoundationVersionNumber）
tabBarItem1.title=@"Home";
tabBarItem2.title=@"Connect";
tabBarItem3.title=@"About";
tabBarItem4.title=@"Settings";


[[UITabBarItem appearance] setTitleTextAttributes:
 [NSDictionary dictionaryWithObjectsAndKeys:
  [UIColor colorWithRed:139.0/255.0 green:189.0/255.0 blue:208.0 alpha:255.0], UITextAttributeTextColor,
  [UIFont fontWithName:@"Arial" size:0.0], UITextAttributeFont,
  nil] forState:UIControlStateNormal];

[[UITabBarItem appearance] setTitleTextAttributes:
 [NSDictionary dictionaryWithObjectsAndKeys:
  [UIColor whiteColor], UITextAttributeTextColor,
  [UIFont fontWithName:@"Arial" size:0.0], UITextAttributeFont,
  nil] forState:UIControlStateSelected];

[tabBarItem1 setFinishedSelectedImage:[self imageWithImage:[UIImage imageNamed:@"home_icon_selected.png"] scaledToSize:CGSizeMake(24, 18)] withFinishedUnselectedImage:[self imageWithImage:[UIImage imageNamed:@"home_icon.png"] scaledToSize:CGSizeMake(24, 18)]];

[tabBarItem2 setFinishedSelectedImage:[self imageWithImage:[UIImage imageNamed:@"connect_icon_selected.png"] scaledToSize:CGSizeMake(24, 18)] withFinishedUnselectedImage:[self imageWithImage:[UIImage imageNamed:@"connect_icon.png"] scaledToSize:CGSizeMake(24, 18)]];

[tabBarItem3 setFinishedSelectedImage:[self imageWithImage:[UIImage imageNamed:@"about_icon_selected.png"] scaledToSize:CGSizeMake(24, 18)] withFinishedUnselectedImage:[self imageWithImage:[UIImage imageNamed:@"about_icon.png"] scaledToSize:CGSizeMake(24, 18)]];

[tabBarItem4 setFinishedSelectedImage:[self imageWithImage:[UIImage imageNamed:@"settings_icon_selected.png"] scaledToSize:CGSizeMake(24, 18)] withFinishedUnselectedImage:[self imageWithImage:[UIImage imageNamed:@"settings_icon.png"] scaledToSize:CGSizeMake(24, 18)]];


self.tabBarController.tabBar.tintColor = [UIColor whiteColor];

//check if this is not iOS 7
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
//your code above except last line
//Tint is background in iOS 6 but text color in iOS 7
self.tabBarController.tabBar.tintColor = [UIColor blackColor];
}else{
//your code above
}