iphone开发之设置UITabBar的相关属性

ios默认的样式不太适合我们的应用，可以通过一下方法设置相关属性：

设置背景：

 [_tabBar setBackgroundImage:[UIImage imageNamed:@"bg_tabbar"]];

设置某个Item选中的效果：

 _tabBar.selectionIndicatorImage = [UIImage imageNamed:@"bar_item_selected"];//设置选中效果图片

设置UITabBarItem文字颜色

 [[UITabBarItem appearance] setTitleTextAttributes:@{ UITextAttributeTextColor : [UIColor whiteColor] }
                                              forState:UIControlStateNormal];
     [[UITabBarItem appearance] setTitleTextAttributes:@{ UITextAttributeTextColor : [UIColor whiteColor] }
                                              forState:UIControlStateHighlighted];

设置UITabBarItem未选中与选中时的图片：

 [_hotTabItem setFinishedSelectedImage:[UIImage imageNamed:@"1_selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"1"]];
     [_searchTabItem setFinishedSelectedImage:[UIImage imageNamed:@"2_selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"2"]];
     [_userTabItem setFinishedSelectedImage:[UIImage imageNamed:@"3_selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"3"]];