iOS: 学习笔记, 动态添加按钮

1. 新建iOS -> Single View Application.

2. 个性控制器文件YYViewController.m(此处修改为你相应的控制器文件名)

//
//  YYViewController.m
//  StudyDynamicButton
//
//  Created by yao_yu on 14-5-27.
//  Copyright (c) 2014年 yao_yu. All rights reserved.
//

#import "YYViewController.h"

@interface YYViewController ()

@end


@implementation YYViewController

- (void)onAddButtonClicked{
    CGRect pframe = self.view.frame;
    CGFloat width = 200;
    CGFloat height = 60;
    CGRect frame = CGRectMake(pframe.origin.x + (pframe.size.width - width)/2, pframe.origin.y + height * 2, width, height);
    UIButton *btnAddedButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    btnAddedButton.backgroundColor = [UIColor clearColor];
    [btnAddedButton setTitle:@"动态添加的按钮" forState:UIControlStateNormal];
    btnAddedButton.frame = frame;
    [btnAddedButton addTarget:self action:@selector(onDynamicButtonClicked) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btnAddedButton];
}

-(void) onDynamicButtonClicked{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"您点击了动态按钮" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定",@"第二项", nil];
    [alert show];
}

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSLog(@"按钮索引:%ld", buttonIndex);
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    //手动添加按钮
    CGRect pframe = self.view.frame;
    CGFloat width = 200;
    CGFloat height = 60;
    CGRect frame = CGRectMake(pframe.origin.x + (pframe.size.width - width)/2, pframe.origin.y, width, height);
    UIButton *btnAddDynamicButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    btnAddDynamicButton.backgroundColor = [UIColor clearColor];
    [btnAddDynamicButton setTitle:@"增加动态按钮" forState:UIControlStateNormal];
    btnAddDynamicButton.frame = frame;
    [btnAddDynamicButton addTarget:self action:@selector(onAddButtonClicked) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btnAddDynamicButton];
}

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

@end

 3. 运行程序.