IOS NavigationController Toolbar学习笔记

1、首先将toolbar显示出来，在viewDidLoad中添加代码让toolbar显示，代码如下：

 

 

[self.navigationController setToolbarHidden:NO animated:YES]

 

 

     显示如下图：

 

2、在ToolBar上添加UIBarButtonItem

新建几个UIBarButtonItem，然后以数组的形式添加到Toolbar中
       

UIBarButtonItem *camera=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(ClickToolBarButton)];
   [camera setWidth:80];
   UIBarButtonItem *refresh=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(ClickToolBarButton)];
   [refresh setWidth:80];
   UIBarButtonItem *reply=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemReply target:self action:@selector(ClickToolBarButton)];
   [reply setWidth:80];
   UIBarButtonItem *compose=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCompose target:self action:@selector(ClickToolBarButton)];
   [compose setWidth:80];

   UIBarButtonItem *splitspace=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

   [self setToolbarItems:[NSArray arrayWithObjects:splitspace,camera,splitspace,refresh,splitspace,reply,splitspace,compose,splitspace, nil nil]];

定义点击事件，代码如下：

-(void)ClickToolBarButton{
    NSLog(@"你点击了!");
}

最终运行效果图如下：

 

说明：使用[self.navigationController setToolbarItems:[NSArray arrayWithObjects:splitspace,camera,splitspace,refresh,splitspace,reply,splitspace,compose,splitspace, nil] animated:YES];添加是不起作用的。

3、自定义Toolbar,首先新建一个页面，在头文件中声明一下UIToolbar *toolbar;
   在实现文件中的viewDidLoad方法中实现自定义Toolbar,实现代码如下：
 

- (void)viewDidLoad

   [super viewDidLoad];
   [self.navigationController setToolbarHidden:YES animated:YES];
   //自定义的UIView
   UIButton *btn=[UIButton buttonWithType:UIButtonTypeContactAdd];

   [btn addTarget:self action:nil forControlEvents:UIControlEventTouchUpInside];
   UIBarButtonItem *firstButton=[[UIBarButtonItem alloc] initWithCustomView:btn];
   [firstButton setWidth:120];
   //系统自带的view
   UIBarButtonItem *addButton=[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:nil];
   toolbar=[[UIToolbar alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height-toolbar.frame.size.height-44, self.view.frame.size.width, 44)];
   [toolbar setBarStyle:UIBarStyleDefault];
   toolbar.autoresizingMask=UIViewAutoresizingFlexibleTopMargin;
   [toolbar setItems:[NSArray arrayWithObjects:addButton,firstButton,nil]];
   [self.view addSubview:toolbar];
   //Do any additional setup after loading the view from its nib.

运行以后界面如下：