运行效果图:
第一个界面
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第二个界面
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第三个界面
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1、显示Toolbar
在RootViewController.m的- (void)viewDidLoad方法中添加代码,这样Toobar就显示出来了。
[self.navigationController setToolbarHidden:NO animated:YES];
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 *one = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:nil action:nil]; UIBarButtonItem *two = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:nil action:nil]; UIBarButtonItem *three = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:nil action:nil]; UIBarButtonItem *four = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:nil action:nil]; UIBarButtonItem *flexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; [self setToolbarItems:[NSArray arrayWithObjects:flexItem, one, flexItem, two, flexItem, three, flexItem, four, flexItem, nil]];
注意:用 [self.navigationController.toolbar setItems:(NSArray *) animated:<#(BOOL)#>]这个方法添加item是不起效果的。下面我动态自己添加Toolbar时,这个才起效果。
3、动态添加Toolbar
我们在SecondView添加动态的Toolbar。
在SecondViewController.h添加
#import <UIKit/UIKit.h> @interface SecondViewController : UIViewController { UIToolbar *toolBar; } @end
在SecondViewController.m添加:
- (void)viewDidLoad { [super viewDidLoad]; [self.navigationController setToolbarHidden:YES animated:YES]; UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(gotoThridView:)]; toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0, self.view.frame.size.height - toolBar.frame.size.height - 44.0, self.view.frame.size.width, 44.0)]; [toolBar setBarStyle:UIBarStyleDefault]; toolBar.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; [toolBar setItems:[NSArray arrayWithObject:addButton]]; [self.view addSubview:toolBar]; // Do any additional setup after loading the view from its nib. }
先把RootView时显示的Toobar隐藏
[self.navigationController setToolbarHidden:YESanimated:YES];然后把新建的Toolbar添加的SecondView中,并为Toobar设置了一个Item.
[toolBarsetItems:[NSArrayarrayWithObject:addButton]];
4、新建ThridView,从SecondView跳转到
Commad+N新建一个ThridViewController,
这个addButton跳转到ThridView
-(void)gotoThridView:(id)sender { ThridViewController *thridView = [[ThridViewController alloc] init]; [self.navigationController pushViewController:thridView animated:YES]; thridView.title = @"Thrid View"; }
动态添加的时候,当从第二个View返回rootView的时候,rootView里面的toolBar消失了,该怎么办呢?
在RootViewController.m中添加该句,就可以了
-(void)viewWillAppear:(BOOL)animated{ [self.navigationController setToolbarHidden:NO animated:YES]; }
如何给UIToolBar 添加 多个UIBarButtonItem . 在写一遍:
//首先需要创建一个NSMutableArray NSMutableArray *buttons=[[NSMutableArray alloc]initWithCapacity:3]; [buttons autorelease]; //创建一个 UIBarButtonItem 系统刷新按钮 并且加入到Array中 UIBarButtonItem *freshButton=[[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemRefresh target:self action:@selector(OnrefreshMap:)]; [buttons addObject:freshButton]; [freshButton release]; //创建一个空格 ,加入到array,用来将下面加入的按钮按照右边对齐 UIBarButtonItem *SpaceButton=[[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; [buttons addObject:SpaceButton]; [SpaceButton release]; //创建一个 系统 搜索按钮,加入到array,放到右边 UIBarButtonItem *searchSelfButton=[[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemSearch target:self action:@selector(OnFindSelf:)]; [buttons addObject:searchSelfButton]; [searchSelfButton release]; //最后,将array 设置给toolbar [toolbar setItems:buttons animated:YES]; [toolbar sizeToFit];