IOS——第二个View中使用TabbarController例子，tabbar中页面间通过非tabbar按钮跳转（xib布局）

该教程为自己记录使用，要求读者至少有一点点简单的Xcode开发经验即可

Demo功能介绍：

下图所示即可知道，TabbarController是控制器，控制着五个页面的

Demo创建过程：

首先是文件的一些说明：

TabbarController是UITabBarController的实现

FirstViewController是UIViewController的实现

SecondViewController是UIViewController的实现

ThirdViewController是UIViewController的实现

ForthViewController是UIViewController的实现

FifthViewController是UIViewController的实现

1.首先创建项目——(SingleViewApp)

2.创建TabbarController，继承于UITabBarController

3.创建FirstViewController,SecondViewController,ThirdViewController,ForthViewController以及FifthViewController，它们都是UIViewController的实现，同时创建的时候要连同

xib文件一起创建（方便以后的布局）

3.在主页面创建一个button，添加点击事件代码如下：

- (IBAction)goTabbarController:(id)sender {    TabBarController *tabbarController=[[TabBarController alloc] init];    [tabbarController setTitle:@"TabBarController"];    [self presentModalViewController:tabbarController animated:YES];}

这样，点击事件后就跳转到TabbarController中

4.接下来，连接TabbarController和五个ViewController，

TabBarController.h文件如下：

(注意！！我们要自定义Tabbar样式，舍弃系统自定义格式，思路是将原有的Tabbar隐藏，然后创建一个View作为TabbarItem的承载体，然后还要创建五个UIButton)

#import <UIKit/UIKit.h>#import "FirstViewController.h"#import "SecondViewController.h"#import "ThirdViewController.h"#import "ForthViewController.h"#import "FifthViewController.h"@interface TabBarController : UITabBarController{    UIView *tabBarView;    UIButton *firstButton;    UIButton *secondButton;    UIButton *thirdButton;    UIButton *forthButton;    UIButton *fifthButton;}@property (retain, nonatomic) UIView *tabBarView;@property (retain, nonatomic) UIButton *firstButton;@property (retain, nonatomic) UIButton *secondButton;@property (retain, nonatomic) UIButton *thirdButton;@property (retain, nonatomic) UIButton *forthButton;@property (retain, nonatomic) UIButton *fifthButton;@end

5.下面是TabBarController.m文件

#import "TabBarController.h"@interface TabBarController ()@end@implementation TabBarController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];    //初始化TabBarController，将TabBarController与五个ViewController关联起来    [self initTabBarController];        //初始化自定义TabBarView的界面    [self initTabBarView];}-(void) initTabBarController{    NSMutableArray *items = [[NSMutableArray alloc] init];    FirstViewController *firstView = [[FirstViewController alloc] init];    [items addObject:firstView];    //这一句话是对firstView的监听，实现从第一个view跳转到第二个view    firstView.delegate=self;        SecondViewController *secondView = [[SecondViewController alloc] init];    [items addObject:secondView];    ThirdViewController *thirdView=[[ThirdViewController alloc] init];    [items addObject:thirdView];    ForthViewController *forthView=[[ForthViewController alloc] init];    [items addObject:forthView];    FifthViewController *fifthView=[[FifthViewController alloc] init];    [items addObject:fifthView];    [self setViewControllers:items];}-(void) initTabBarView{    CGRect rx = [UIScreen mainScreen].bounds;    int screenHeight=(int)rx.size.height;        //针对不同屏幕尺寸，调整TabBarView的高度    if(screenHeight==568){        tabBarView = [[UIView alloc] initWithFrame:CGRectMake(0, 568 - 50, 320, 50)];//49为tabBar的高度    } else {        tabBarView = [[UIView alloc] initWithFrame:CGRectMake(0, 480 - 50, 320, 50)];//49为tabBar的高度    }        tabBarView.backgroundColor = [UIColor grayColor];//设置tabBar的背景颜色    [self.view addSubview:tabBarView];        firstButton=[UIButton buttonWithType:UIButtonTypeCustom];    secondButton=[UIButton buttonWithType:UIButtonTypeCustom];;    thirdButton=[UIButton buttonWithType:UIButtonTypeCustom];;    forthButton=[UIButton buttonWithType:UIButtonTypeCustom];;    fifthButton=[UIButton buttonWithType:UIButtonTypeCustom];        //初始化button样式    [self initTabButton:firstButton normalImage:@"icon001.png" buttonTag:0];    [self initTabButton:secondButton normalImage:@"icon002.png" buttonTag:1];    [self initTabButton:thirdButton normalImage:@"icon003.png" buttonTag:2];    [self initTabButton:forthButton normalImage:@"icon004.png" buttonTag:3];    [self initTabButton:fifthButton normalImage:@"icon005.png" buttonTag:4];        //将Button添加到TabBarView上    [tabBarView addSubview:firstButton];    [tabBarView addSubview:secondButton];    [tabBarView addSubview:thirdButton];    [tabBarView addSubview:forthButton];    [tabBarView addSubview:fifthButton];}-(void) initTabButton: (UIButton *)button normalImage:(NSString *)normalImage buttonTag:(int) i{    button.frame = CGRectMake((64-30)/2+(i*64), (49-30)/2, 30, 30);    button.tag = i;    [button setImage:[UIImage imageNamed:normalImage] forState:UIControlStateNormal];    [button addTarget:self action:@selector(selectedTab:) forControlEvents:UIControlEventTouchUpInside];}//TabBar上Button点击时对应的方法- (void)selectedTab:(UIButton *)button {    self.selectedIndex = button.tag;}//实现FirstViewDelegate方法-(void) goToSecondView{    //跳转到第二个View    [self setSelectedIndex:1];}-(void) backToMain{    //返回主页面    [self dismissModalViewControllerAnimated:YES];}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];}@end

6. 开始介绍FirstViewController的界面，主要就是添加一个返回主界面的按钮，以及一个跳转到第二个View的按钮

FirstViewController.h：

#import <UIKit/UIKit.h>@class FirstViewController;@protocol FirstViewControllerDelegate<NSObject>@required-(void) goToSecondView;-(void) backToMain;@end@interface FirstViewController : UIViewController{    id<FirstViewControllerDelegate> delegate;}@property (retain, nonatomic) id<FirstViewControllerDelegate> delegate;@property (retain, nonatomic) IBOutlet UIButton *backButton;@property (retain, nonatomic) IBOutlet UIButton *goSecondView;- (IBAction)goBackMain:(id)sender;- (IBAction)goSecondView:(id)sender;@end

FirstViewController.m

#import "FirstViewController.h"@interface FirstViewController ()@end@implementation FirstViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];}- (IBAction)goBackMain:(id)sender {    [self.delegate backToMain];}- (IBAction)goSecondView:(id)sender {    [self.delegate goToSecondView];}@end

7. 在第二个页面添加tableview和导航栏

其实道理很简单，就是先创建一个UINavigatorController A，然后关联UIViewController B（使用pushViewController方法），将A作为子元素添加到TabBar的items中即可，如下

    SettingView_iPhone *settingView=[[SettingView_iPhonealloc] init];

    settingNavController=[[UINavigationControlleralloc]init];

    [settingNavControllerpushViewController:settingView animated:NO];

    [items addObject:settingNavController];

其中，settingNavController是UINavigatorController.