iOS中几种传值的方式

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1.ios里面传值的方式很多中现在介绍几种常用的传值方式:

第一种: 属性传值方式:

 首先要建两个controller 分别为 RootviewController和 DetailviewController 

在Detailviewcontrooler.h实现的代码:(暴露出属性)

 #import <UIKit/UIKit.h>

 @interface DetailViewController : UIViewController

@property (nonatomic,copy)NSString *textString;//属性传值

@end

在Detailviewcontroller.m里面的实现代码:

@interface DetailViewController ()

 @end

@implementation DetailViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    //添加一个返回按钮

    UIButton *backBtn = [[UIButton alloc]initWithFrame:CGRectMake(15,30 , 60, 30)];

    [backBtn addTarget:self action:@selector(BACK) forControlEvents:UIControlEventTouchUpInside];

    [backBtn setTitle:@"返回" forState:UIControlStateNormal];

    [self.view addSubview:backBtn];

    //创建一个label,来接收传过来的数值

    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(100, 200, 100, 30)];

    label.textColor = [UIColor redColor];

    label.backgroundColor = [UIColor grayColor];

    label.textAlignment = NSTextAlignmentCenter;//对齐的方式

    label.numberOfLines = 0; //不分行数

    label.text = self.textString;//传值过来

    [self.view addSubview:label]; 

}

-(void)BACK {

     [self dismissViewControllerAnimated:NO completion:nil];

 }

在Rootviewcontroller.m 的实现代码:

#import "RootViewController.h"

#import "DetailViewController.h"

@interface RootViewController ()

@property (nonatomic,retain)UITextField *textfield;

@end

@implementation RootViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    self.textfield = [[UITextField alloc]initWithFrame:CGRectMake(100, 30, 100, 30)];

    self.textfield.backgroundColor = [UIColor grayColor];

    self.textfield.layer.cornerRadius = 10.0;

    [self.view addSubview:self.textfield];

    //创建一个button传递事件

    UIButton *custombutton = [[UIButton alloc]init];

    custombutton.frame = CGRectMake(110, 100,80, 40);

    [custombutton setTitle:@"入栈显示" forState:UIControlStateNormal ];

    [custombutton addTarget:self action:@selector(handTap:) forControlEvents:UIControlEventTouchUpInside];

    custombutton.backgroundColor = [UIColor redColor];

    custombutton.layer.cornerRadius = 10.0;

    [self.view addSubview:custombutton];  

}

-(void)handTap:(UIButton *)sender{

    DetailViewController *detailVC = [[DetailViewController alloc]init];

    detailVC.textString = self.textfield.text;//后面的赋值给前面的

    [self presentViewController:detailVC animated:NO completion:nil];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

  }

//点击空白处隐藏键盘

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

    [super touchesBegan:touches withEvent:event];

    [self.view endEditing:YES]; //结束编辑

}

最后自己测试一下就可以成功了!!

第二种Block传值: 遇到问题了暂时没有上传代码了:

iOS中几种传值的方式

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原文地址：http://www.cnblogs.com/zhufeng1994/p/4624443.html