//UINavigationBar导航条:(320*44) UINavigationItem决定导航条的显示 //320*480的点坐标系， 4、4s中像素的值:640*960,但不影响点坐标的计算 //UINavigationBar 导航条:(320*44) //所有vc共用一个导航条 //self.navigationController.navigationBar //iOS7之后，self.view原点默认在屏幕的左上角，导航条默认为半透明的 //将半透明属性设置为NO,view的原点从导航条的下边算起 self.navigationController.navigationBar.translucent = YES; UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [btn setFrame:CGRectMake(10,74,300,30)]; [btn setTitle:@"push" forState:UIControlStateNormal]; [btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside]; btn.backgroundColor = [UIColor redColor]; [self.view addSubview:btn]; self.view.backgroundColor = [UIColor yellowColor]; //为导航条贴图 //UIBarMetricsDefault 对应iPhone竖屏的状态,人像模式 [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navBg.png"] forBarMetrics:UIBarMetricsDefault]; //设置iPhone处于横屏状态，导航条的图片 //UIBarMetricsLandscapePhone iPhone横屏状态，风景模式 //横屏:(480*32) [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navBg-32.png"] forBarMetrics:UIBarMetricsLandscapePhone]; //UINavigationItem,决定导航条的显示 //UINavigationBar 有一个栈来维护UINavigationItem对象,我们对vc入栈时，导航条会自动push一个UINavigationItem对象 //vc与显示在导航条上的Item对象一一对应 //设置标题 self.navigationItem.title = @"root"; //设置标题视图(应用最多的是贴上公司的logo) UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0,0,100,30)]; view.backgroundColor = [UIColor orangeColor]; self.navigationItem.titleView = view; //UIBarButtonItem 显示在导航条或者工具栏上的按钮 //通过设置标题得到UIBarButtonItem对象 UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"left" style:UIBarButtonItemStylePlain target:self action:@selector(leftItemClicked)]; self.navigationItem.leftBarButtonItem = item1; //利用系统预置的样式创建 UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(rightItemClicked:)]; item2.tag = 100; //self.navigationItem.rightBarButtonItem = item2; //最重要，最常用的创建方式:(传入自定义视图的创建方式) UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; btn.frame = CGRectMake(0,0,20,20); [btn setBackgroundImage:[UIImage imageNamed:@"itemImage.png"] forState:UIControlStateNormal]; [btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *item3 = [[UIBarButtonItem alloc] initWithCustomView:btn]; item3.tag = 101; NSArray *itemArray = [NSArray arrayWithObjects:item2,item3,nil]; //设置一组按钮 self.navigationItem.rightBarButtonItems = itemArray; //显示隐藏的工具栏:(UIToolBar 320*44),所有vc共用一个工具栏 [self.navigationController setToolbarHidden:NO animated:YES]; //为工具栏贴图 //UIBarPositionBottom 任何一个UIView都可以设置topBar和BottomBar //[self.navigationController.toolbar setBackgroundImage:[UIImage imageNamed:@"toolBar.png"] forToolbarPosition:UIBarPositionBottom barMetrics:UIBarMetricsDefault]; //设置一组自动间隔的按钮 UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(toolItemClicked)]; UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:@selector(toolItemClicked)]; //UIBarButtonSystemItemFlexibleSpace 自动计算间隔的按钮 //UIBarButtonSystemItemFixedSpace width 我们自己设定 UIBarButtonItem *spaceItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; //spaceItem.width NSArray *array = [NSArray arrayWithObjects:spaceItem,item1,spaceItem,item2,spaceItem,nil]; self.toolbarItems = array; //替代默认的back按钮 UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@"custom" style:UIBarButtonItemStylePlain target:self action:@selector(leftItemClicked)]; self.navigationItem.leftBarButtonItem = item; 【UIBarButtonItem】 //导航条专用按钮 //四种创建方式 - (id)initWithImage:(UIImage *)image style:(UIBarButtonItemStyle)style target:(id)target action:(SEL)action; - (id)initWithTitle:(NSString *)title style:(UIBarButtonItemStyle)style target:(id)target action:(SEL)action; - (id)initWithBarButtonSystemItem:(UIBarButtonSystemItem)systemItem target:(id)target action:(SEL)action; - (id)initWithCustomView:(UIView *)customView; UIBarButtonSystemItemFlexibleSpace，是自带的一种空格可以当作占位符用 【self.navigationItem】 //给导航条设置专用按钮和titleView //隐藏自带的返回按钮 @property(nonatomic,assign) BOOL hidesBackButton; - (void)setHidesBackButton:(BOOL)hidesBackButton animated:(BOOL)animated; //中间的view @property(nonatomic,retain) UIView *titleView; //左边和右边的专用按钮 @property(nonatomic,retain) UIBarButtonItem *leftBarButtonItem; @property(nonatomic,retain) UIBarButtonItem *rightBarButtonItem; - (void)setLeftBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated; - (void)setRightBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated; //左边和右边的专用按钮组（数组中存放的是UIBarButtonItem） @property(nonatomic,copy) NSArray *leftBarButtonItems; @property(nonatomic,copy) NSArray *rightBarButtonItems; - (void)setLeftBarButtonItems:(NSArray *)items animated:(BOOL)animated; - (void)setRightBarButtonItems:(NSArray *)items animated:(BOOL)animated; //【UIToolbar】工具条 //每个导航控制器都自带有一个工具栏，是一个UIToolBar的对象,显示在最底部，尺寸（320*44）,工具栏默认处于隐藏状态 //显示工具栏 [self.navigationController setToolbarHidden:NO]; //风格 @property(nonatomic,assign) UIBarStyle barStyle; //是否半透明 @property(nonatomic,assign,getter=isTranslucent) BOOL translucent; // Default is NO on iOS 6 and earlier. Always YES if barStyle is set to UIBarStyleBlackTranslucent //内容渲染颜色 @property(nonatomic,retain) UIColor *tintColor; //导航条的背景色 @property(nonatomic,retain) UIColor *barTintColor; //【上面4个属性和navigationBar的使用方式一样】 //设置背景图片 - (void)setBackgroundImage:(UIImage *)backgroundImage forToolbarPosition:(UIBarPosition)topOrBottom barMetrics:(UIBarMetrics)barMetrics; //UIBarPosition中的枚举值只支持iOS7 //UIToolbarPositionBottom(在iOS7和7以前的操作系统都适用) //UIToolbarPositionBottom 理解（每个UIView都可以指定TopBar 和BottomBar）,导航控制器中工具栏是作为导航控制器view的BottomBar被自动创建出来的 //给toolBar设置专用button(数组中也是UIBarButtonItem) //让viewController直接设置 //self.toolbarItems = array; @property (nonatomic, retain) NSArray *toolbarItems; - (void)setToolbarItems:(NSArray *)toolbarItems animated:(BOOL)animated;