首页 > 代码库 > 导航视图（一）

导航视图（一）

2024-08-15 21:19:10   216人阅读

模态框视图

1、利用xib自定义一个新的ViewController ModalPageController;

2、在原有的视图控制器中触发跳转，代码如下：

ModalPageController *modelPageController = [[ModalPageController alloc]initWithNibName:@"ModalPageController" bundle:nil];        modelPageController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;        [self presentViewController:modelPageController animated:YES completion:^{        NSLog(@"modelPageController");    }];

3、在ModalPageController中返回，代码如下：

[self dismissViewControllerAnimated:YES completion:^{        NSLog(@"Close");    }];

4、两个  ViewController之间的数据交换：

4.1 利用 NSNotificationCenter

1）在原有的ViewController总定义并设置回调，代码如下：

//viewDidLoad里[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(doComplete:) name:@"testComplete" object:nil];//定义回调函数-(void)doComplete:(NSNotification*)notification{    NSDictionary *data =http://www.mamicode.com/ [notification userInfo];    if(nil != data){        NSString *input = [data objectForKey:@"InputText"];        NSLog(@"%@", input);    }}

2）在ModalPageController的返回中，实现通知：

    [self dismissViewControllerAnimated:YES completion:^{        NSLog(@"Close");                NSString *input = self.inputText.text;                NSDictionary *dic = [NSDictionary dictionaryWithObject:input forKey:@"InputText"];        [[NSNotificationCenter defaultCenter]postNotificationName:@"testComplete" object:nil userInfo:dic];                    }];

4.2 利用协议

1）定义一个protocal

#import <Foundation/Foundation.h>@protocol doBack <NSObject>-(void)getInputText:(NSString *)input;@end

2)定义原ViewController遵循并实现该协议，如下：

#import <UIKit/UIKit.h>#import "doBack.h"@interface ViewController : UIViewController<doBack>@end-(void)getInputText:(NSString *)input{    NSLog(@"%@", input);}

3)、在ModelPageController中定义代理，并在跳转前将该代理指向原ViewController

//ModalPageController.h中@property(nonatomic,assign) NSObject<doBack> *delegate;//ModalPageController *modelPageController = [[ModalPageController alloc]initWithNibName:@"ModalPageController" bundle:nil];        modelPageController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;    modelPageController.delegate = self; //相当于取得原来ViewController的引用        [self presentViewController:modelPageController animated:YES completion:^{        NSLog(@"modelPageController");    }];

4)、在ModalPageController需要的地方调用：

[self.delegate getInputText:@"hello Delegate"];

导航视图（一）


联系
我们