//

//  FirstViewController.h

//  控制器数据传递

//

//  Created by wangtouwang on 15/4/15.

//  Copyright (c) 2015年 wangtouwang. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface FirstViewController : UIViewController

@end

//

//  FirstViewController.m

//  控制器数据传递

//

//  Created by wangtouwang on 15/4/15.

//  Copyright (c) 2015年 wangtouwang. All rights reserved.

//

#import "FirstViewController.h"

#import "TwoViewController.h"

@interface FirstViewController ()<PropagateDelegate>

{

    UILabel *firstLable;

    UITextField *firstField;

    UIButton *firstBtn;

}

@end

@implementation FirstViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor blackColor]];

    firstLable = [[UILabel alloc] initWithFrame:CGRectMake(, , , )];

    firstLable.text=@"第一页面进出值";

    firstLable.font=[UIFont systemFontOfSize:15.0];

    firstLable.textColor=[UIColor whiteColor];

     [self.view addSubview:firstLable];

    firstField = [[UITextField alloc] initWithFrame:CGRectMake(, , , )];

    firstField.textColor=[UIColor blackColor];

    firstField.font=[UIFont fontWithName:@"Arial" size:14.0];

    firstField.borderStyle=UITextBorderStyleRoundedRect;

    firstField.placeholder = @"进出值";

    firstField.keyboardType = UIKeyboardTypeDefault;

     [self.view addSubview:firstField];

    firstBtn = [[UIButton alloc] initWithFrame:CGRectMake(, , , )];

    firstBtn.backgroundColor=[UIColor colorWithRed:/255.0 green:/255.0 blue:/255.0 alpha:1.0];

    [firstBtn setTitle:@"跳转第二页面" forState:UIControlStateNormal];

    [firstBtn.layer setCornerRadius:10.0]; //设置矩形四个圆角半径

    [firstBtn addTarget:self action:@selector(turnTwoPage:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:firstBtn];

}

-(void)turnTwoPage:(UIButton *)btn{

    TwoViewController *two = [[TwoViewController alloc] init];

    two.delegate=self;

    [self.navigationController pushViewController:two animated:NO];

}

-(void)propagateToValue:(NSString *)result{

    NSLog(@"反向传值");

    firstField.text=result;

}

@end

//

//  TwoViewController.h

//  控制器数据传递

//

//  Created by wangtouwang on 15/4/15.

//  Copyright (c) 2015年 wangtouwang. All rights reserved.

//

#import <UIKit/UIKit.h>

@protocol PropagateDelegate <NSObject>

@required

-(void)propagateToValue:(NSString *)result;

@end

@interface TwoViewController : UIViewController

@property(nonatomic,assign) id<PropagateDelegate> delegate;

@end

//

//  TwoViewController.m

//  控制器数据传递

//

//  Created by wangtouwang on 15/4/15.

//  Copyright (c) 2015年 wangtouwang. All rights reserved.

//

#import "TwoViewController.h"

@interface TwoViewController ()

@property(nonatomic,strong) UILabel *firstLable;

@property(nonatomic,strong) UITextField *firstField;

@property(nonatomic,strong) UIButton *firstBtn;

@end

@implementation TwoViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor blackColor]];

    _firstLable = [[UILabel alloc] initWithFrame:CGRectMake(, , , )];

    _firstLable.text=@"第二页面进出值";

    _firstLable.font=[UIFont systemFontOfSize:15.0];

    _firstLable.textColor=[UIColor whiteColor];

    [self.view addSubview:_firstLable];

    _firstField = [[UITextField alloc] initWithFrame:CGRectMake(, , , )];

    _firstField.textColor=[UIColor blackColor];

    _firstField.font=[UIFont fontWithName:@"Arial" size:14.0];

    _firstField.borderStyle=UITextBorderStyleRoundedRect;

    _firstField.placeholder = @"进出值";

    _firstField.keyboardType = UIKeyboardTypeDefault;

    [self.view addSubview:_firstField];

    _firstBtn = [[UIButton alloc] initWithFrame:CGRectMake(, , , )];

    _firstBtn.backgroundColor=[UIColor colorWithRed:/255.0 green:/255.0 blue:/255.0 alpha:1.0];

    [_firstBtn setTitle:@"跳转第一页面" forState:UIControlStateNormal];

    [_firstBtn.layer setCornerRadius:10.0]; //设置矩形四个圆角半径

    [_firstBtn addTarget:self action:@selector(turnFirstPage:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:_firstBtn];

}

//反向传值

-(void)turnFirstPage:(UIButton *)btn{

    [self.delegate propagateToValue:_firstField.text];

    [self.navigationController popViewControllerAnimated:NO];

}

@end