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.