// AppDelegate.m
// 页面传值总结
//
// Created by qianfeng on 15/6/13.
// Copyright (c) 2015年 qianfeng. All rights reserved.
//
#import "AppDelegate.h"
#import "ViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
ViewController *ctr = [[ViewController alloc]init];
UINavigationController*nav = [[UINavigationController alloc]initWithRootViewController:ctr];
self.window.rootViewController = nav;
return YES;
}
//
// ViewController.m
// 页面传值总结
//
// Created by qianfeng on 15/6/13.
// Copyright (c) 2015年 qianfeng. All rights reserved.
//
#import "ViewController.h"
#import "DetailVIewController.h"
@interface ViewController ()
{
UILabel*_label;
}
@property(nonatomic,strong)UILabel*label;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
//用于显示第二个界面传过来的数据。
_label = [[UILabel alloc]initWithFrame:CGRectMake(120, 220, 100, 40)];
_label.backgroundColor = [UIColor orangeColor];
[self.view addSubview:_label];
//创建用于跳转到第二个界面的按钮；
UIButton*btn = [self createBtnFrame:CGRectMake(120, 300, 100, 40) title:@"跳转" target:self action:@selector(clickBtn:)];
btn.backgroundColor = [UIColor grayColor];
[self.view addSubview:btn];
}
-(void)clickBtn:(id)sender
{
DetailVIewController*ctr = [[DetailVIewController alloc]init];
__weak ViewController*weakself =self;
ctr.clockBlock = ^(NSString*title){
weakself.label.text = title;
};
[self.navigationController pushViewController:ctr animated:YES];
}
-(UIButton*)createBtnFrame:(CGRect)frame title:(NSString*)title target:(id)target action:(SEL)action
{
UIButton*btn= [UIButton buttonWithType:UIButtonTypeSystem];
btn.frame = frame;
[btn setTitle:title forState:UIControlStateNormal];
[btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
return btn;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
//
// DetailVIewController.h
// 页面传值总结
//
// Created by qianfeng on 15/6/13.
// Copyright (c) 2015年 qianfeng. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface DetailVIewController : UIViewController
//声明block
@property(nonatomic,copy)void(^clockBlock)(NSString*titler);
@end
//
// DetailVIewController.m
// 页面传值总结
//
// Created by qianfeng on 15/6/13.
// Copyright (c) 2015年 qianfeng. All rights reserved.
//
#import "DetailVIewController.h"
@implementation DetailVIewController
-(void)viewDidLoad
{
[super viewDidLoad] ;
self.view.backgroundColor = [UIColor whiteColor];
UIButton*bt1 = [self createBtnFrame:CGRectMake(200, 140, 100, 40) title:@"block传值" target:self action:@selector(blockClick:)];
[self.view addSubview:bt1];
}
-(void)blockClick:(UIButton*)sender
{
NSString*title = [sender currentTitle];
if (self.clockBlock) {
self.clockBlock(title);
}
}
-(UIButton*)createBtnFrame:(CGRect)frame title:(NSString*)title target:(id)target action:(SEL)action
{
UIButton*btn= [UIButton buttonWithType:UIButtonTypeSystem];
btn.frame = frame;
[btn setTitle:title forState:UIControlStateNormal];
[btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
return btn;
}
@end
转载于:https://www.cnblogs.com/0515offer/p/4641299.html
