iOS学习——页面间的传值

iOS学习——页面间的传值

学会ios的页面间传值。

和android不同，iOS传值不是通过Intent，而是更直接的方法，直接在被传值类中定义一个存放值的变量，在上一个页面直接将值放入，达到传值的目的。

故事板：

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功能描述:

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代码:

第一个页面替换自己成自己写的类getDataViewController

• createDataViewController.h

//
//  createDataViewController.h
//  coderfish003
//
//  Created by apple40 on 15-7-20.
//  Copyright (c) 2015年 coderfish. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface createDataViewController : UIViewController

// 定义输入框
@property (strong, nonatomic) IBOutlet UITextField *tfCreateData;

@end

• createDataViewController.m

//
//  createDataViewController.m
//  coderfish003
//
//  Created by apple40 on 15-7-20.
//  Copyright (c) 2015年 coderfish. All rights reserved.
//

#import "createDataViewController.h"
#import "getDataViewController.h"

@interface createDataViewController ()

@end

@implementation createDataViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

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

// 页面传值函数
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    NSString *data = self.tfCreateData.text;
    // 获得getDataViewController对象引用
    getDataViewController *controller = (getDataViewController *)[segue destinationViewController];
    // 给getDataViewController的getData标签内容赋值
    controller.getData = data;
}

@end

第二个页面替换自己成自己写的类getDataViewController

• getDataViewController.h

//
//  getDataViewController.h
//  coderfish003
//
//  Created by apple40 on 15-7-20.
//  Copyright (c) 2015年 coderfish. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface getDataViewController : UIViewController
@property (strong, nonatomic) IBOutlet UILabel *label;
@property(strong,nonatomic)NSString *getData;
@end

• getDataViewController.m

//
//  getDataViewController.m
//  coderfish003
//
//  Created by apple40 on 15-7-20.
//  Copyright (c) 2015年 coderfish. All rights reserved.
//

#import "getDataViewController.h"

@interface getDataViewController ()

@end

@implementation getDataViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.label.text = self.getData;
}

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

@end

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结果

在第一页的输入框输入文字，点下一页在下一页中显示文字

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