一：NavigationBar
1 、设置导航栏颜色
self.navigationController.navigationBar.barTintColor= [UIColor whiteColor];
2、设置导航栏子视图的颜色（例如返回按钮颜色）
self.navigationController.navigationBar.tintColor=[UIColor whiteColor];
3、设置导航栏背景图片
[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navigationBar"]forBarMetrics:0];
4、取消导航栏最下面的线条（必须设置背景图片才能取消）
self.navigationController.navigationBar.shadowImage= [[UIImage alloc]init];self.navigationController.navigationBar.translucent=NO;
5、ScrollView是否可以滚动至导航栏或TabBar下面，默认为YES
self.automaticallyAdjustsScrollViewInsets=NO;
6、导航栏字体大小和颜色
[self.navigationController.navigationBar setTitleTextAttributes:
@{NSFontAttributeName:[UIFont systemFontOfSize:19],
NSForegroundColorAttributeName:[UIColor whiteColor]}];
7、添加多个栏按钮项目:
UIBarButtonItem *shareItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(clickPopoverButton:)];
UIBarButtonItem *cameraItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(clickPopoverButton:)];
self.navigationItem.rightBarButtonItems = @[shareItem,cameraItem]; //从右往左
8、使用图片作为导航栏标题。设置了 titleView 后，标题自动会隐藏:
self.title=@"popover";
self.navigationItem.titleView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"qrcode_screen"]];
9、设置左边按钮和back按钮同时存在：
//在push进去的控制器里设置
self.navigationItem.leftItemsSupplementBackButton = YES;
10.设置导航栏不透明
self.navigationController.navigationBar.translucent = NO;
二：UITabBarItem
1.改变UITabBarItem 字体颜色
[[UITabBarItem appearance]setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColorwhiteColor],UITextAttributeTextColor,nil]forState:UIControlStateNormal];
[[UITabBarItemappearance]setTitleTextAttributes:[NSDictionarydictionaryWithObjectsAndKeys:[UIColorcolorWithHexString:"#00C8D3"],UITextAttributeTextColor,nil]forState:UIControlStateSelected];
2.改变UITabBarItem 字体颜色和大小
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor blackColor], NSForegroundColorAttributeName, [UIFont fontWithName:@"Helvetica" size:12.0f],NSFontAttributeName,nil] forState:UIControlStateNormal];
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor redColor], NSForegroundColorAttributeName, [UIFont fontWithName:@"Helvetica" size:12.0f],NSFontAttributeName,nil] forState:UIControlStateSelected];
3.改变UITabBarItem的选中和非选中图片
nav1.tabBarItem.image = [ImageNamed(@"tabicon1_unselect") imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
nav1.tabBarItem.selectedImage = [ImageNamed(@"tabicon1_select") imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
4.改变UITabBarController的颜色
UIView*mView=[[UIViewalloc]initWithFrame:CGRectMake(0,0,320,48)];//这是整个tabbar的颜色
[mViewsetBackgroundColor:[UIColorcolorWithPatternImage:[UIImageimageNamed:@"tabbar.png"]]];
[tab.tabBarinsertSubview:mViewatIndex:1];
mView.alpha=0.8;
5.如何隐藏系统自带的tabbar
有时候有的页面并不需要显示tabbar，但是返回的时候要显示tabbar，举个例子A->B 当A push到 B 时需要设置self.navigationController.hidesBottomBarWhenPushed= YES;
同时在B页面要
- (void)viewWillAppear:(BOOL)animated
{
[superviewWillAppear:animated];
self.tabBarController.tabBar.hidden=YES;
}
- (void)viewWillDisappear:(BOOL)animated
{
[superviewWillDisappear:animated];
self.tabBarController.tabBar.hidden=NO;
}