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)
1 // 2 // YYViewController.m 3 // StudyDynamicButton 4 // 5 // Created by yao_yu on 14-5-27. 6 // Copyright (c) 2014年 yao_yu. All rights reserved. 7 // 8 9 #import "YYViewController.h" 10 11 @interface YYViewController () 12 13 @end 14 15 16 @implementation YYViewController 17 18 - (void)onAddButtonClicked{ 19 CGRect pframe = self.view.frame; 20 CGFloat width = 200; 21 CGFloat height = 60; 22 CGRect frame = CGRectMake(pframe.origin.x + (pframe.size.width - width)/2, pframe.origin.y + height * 2, width, height); 23 UIButton *btnAddedButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 24 btnAddedButton.backgroundColor = [UIColor clearColor]; 25 [btnAddedButton setTitle:@"动态添加的按钮" forState:UIControlStateNormal]; 26 btnAddedButton.frame = frame; 27 [btnAddedButton addTarget:self action:@selector(onDynamicButtonClicked) forControlEvents:UIControlEventTouchUpInside]; 28 [self.view addSubview:btnAddedButton]; 29 } 30 31 -(void) onDynamicButtonClicked{ 32 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]; 33 [alert show]; 34 } 35 36 -(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 37 { 38 NSLog(@"按钮索引:%ld", buttonIndex); 39 } 40 41 - (void)viewDidLoad 42 { 43 [super viewDidLoad]; 44 45 //手动添加按钮 46 CGRect pframe = self.view.frame; 47 CGFloat width = 200; 48 CGFloat height = 60; 49 CGRect frame = CGRectMake(pframe.origin.x + (pframe.size.width - width)/2, pframe.origin.y, width, height); 50 UIButton *btnAddDynamicButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 51 btnAddDynamicButton.backgroundColor = [UIColor clearColor]; 52 [btnAddDynamicButton setTitle:@"增加动态按钮" forState:UIControlStateNormal]; 53 btnAddDynamicButton.frame = frame; 54 [btnAddDynamicButton addTarget:self action:@selector(onAddButtonClicked) forControlEvents:UIControlEventTouchUpInside]; 55 [self.view addSubview:btnAddDynamicButton]; 56 } 57 58 - (void)didReceiveMemoryWarning 59 { 60 [super didReceiveMemoryWarning]; 61 // Dispose of any resources that can be recreated. 62 } 63 64 @end
3. 运行程序.
