UI5

// // AppDelegate.m // UI5_UINavigation传值 // // Created by zhangxueming on 15/7/7. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "AppDelegate.h" #import "ViewController.h" @interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. ViewController *rootViewController = [[ViewController alloc] init]; UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:rootViewController]; self.window.rootViewController = nav; return YES; }

 

// // ViewController.h // UI5_UINavigation传值 // // Created by zhangxueming on 15/7/7. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <UIKit/UIKit.h> #import "SubViewController.h" @interface ViewController : UIViewController <sendTitleReport> @end // // ViewController.m // UI5_UINavigation传值 // // Created by zhangxueming on 15/7/7. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "ViewController.h" #import "SubViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.view.backgroundColor = [UIColor cyanColor]; UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem]; btn.frame = CGRectMake(100, 200, self.view.frame.size.width-200, 50); [btn setTitle:@"push" forState:UIControlStateNormal]; btn.titleLabel.font = [UIFont boldSystemFontOfSize:24]; [btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:btn]; self.navigationItem.title = @"按钮一"; } - (void)btnClicked { NSLog(@"-------"); SubViewController *svc = [[SubViewController alloc] init]; //正向传值: 最简单的做法, 在子视图控制器中定义属性实例变量接受值 svc.delegate = self;//设置代理 svc.currentTitle = self.navigationItem.title; [self.navigationController pushViewController:svc animated:YES]; } - (void)sendButtonTitle:(NSString *)title { self.navigationItem.title = title; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end

 

// // SubViewController.h // UI5_UINavigation传值 // // Created by zhangxueming on 15/7/7. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <UIKit/UIKit.h> @protocol sendTitleReport <NSObject> - (void)sendButtonTitle:(NSString *)title; @end @interface SubViewController : UIViewController //记录当前被选中按钮的标题 @property (nonatomic, copy)NSString *currentTitle; //防止相互引用 @property (assign, nonatomic) id <sendTitleReport> delegate; @end // // SubViewController.m // UI5_UINavigation传值 // // Created by zhangxueming on 15/7/7. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "SubViewController.h" @interface SubViewController () @end @implementation SubViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.view.backgroundColor = [UIColor yellowColor]; NSArray *titles = @[@"按钮一",@"按钮二",@"按钮三"]; for (int i= 0; i<3; i++) { UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem]; btn.frame = CGRectMake(100, 100+i*100, self.view.frame.size.width-200, 50); [btn setTitle:titles[i] forState:UIControlStateNormal]; btn.titleLabel.font = [UIFont boldSystemFontOfSize:24]; [btn addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside]; btn.tag = 200+i; //设置选中状态 if ([self.currentTitle isEqualToString:btn.currentTitle]) { btn.selected = YES; } [self.view addSubview:btn]; } } - (void)btnClicked:(UIButton *)btn { if([self.delegate respondsToSelector:@selector(sendButtonTitle:)]) { [self.delegate sendButtonTitle:btn.currentTitle]; } [self.navigationController popViewControllerAnimated:YES]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ @end

 

转载于:https://www.cnblogs.com/0515offer/p/4638749.html

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