浅谈 iOS设计之多视图-导航按钮 UIBarButtonItem切换视图的方法

首先创建一个工程 之后再工程中创建两个类（ FirstViewController和 SecondViewController）

 

操作方法如下

1、在AppDelegate中创建根视图

AppDelegate.h

#import <UIKit/UIKit.h>
#import "FirstViewController.h"
@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

 

@end

AppDelegate.m

#import "AppDelegate.h"

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   
    FirstViewController *firstVC=[[FirstViewController alloc]init];
    //创建导航视图
    UINavigationController *naviGC=[[UINavigationController alloc]initWithRootViewController:firstVC];
    //把导航视图作为根视图
    self.window.rootViewController=naviGC;
   
   
    return YES;

}

2、对两个分类进行操作

FirstViewController.h

 

#import <UIKit/UIKit.h>
#import "SecondViewController.h"
@interface FirstViewController : UIViewController

@end

FirstViewController.m
//  多视图--模态视图
//
//  Created by scjy on 16/3/14.
//  Copyright © 2016年 lanco. All rights reserved.
//

#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad {
    [super viewDidLoad];
   //设置主视图的背景色
    self.view.backgroundColor=[UIColor blueColor];
    //创建按钮项
    UIBarButtonItem *BarBI=[[UIBarButtonItem alloc]initWithTitle:@"Next" style:UIBarButtonItemStylePlain target:self action:@selector(nextPage)];
    //按钮项的位置
    self.navigationItem.rightBarButtonItem=BarBI;//位置在视图的右侧
   
   
}

//方法实现
-(void)nextPage
{
    SecondViewController *secondVC=[[SecondViewController alloc]init];
    //把视图推入到视图secondVC
    [self.navigationController pushViewController:secondVC animated:YES];

}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

 

 

@end

SecondViewController.h

 

#import <UIKit/UIKit.h>

@interface SecondViewController : UIViewController

@end

 

 

  SecondViewController.m

#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    //设置主视图的背景色
    self.view.backgroundColor=[UIColor greenColor];
    //隐藏返回按钮
    self.navigationItem.hidesBackButton=YES;
    //添加返回按钮
    self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"Back" style:2 target:self action:@selector(backPage)];

 

}

//返回的方法实现
-(void)backPage
{
    [self.navigationController popToRootViewControllerAnimated:YES];
 
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

 

 

@end

 

 

结果效果图

点击“Next”按钮项视图会切换到下一个视图，“Back”按钮视图会返回到上一个视图