UI之UIAlertView--提示框

普通弹窗

 1 #import "AppDelegate.h"

 2 

 3 @interface AppDelegate ()

 4 @end

 5 @implementation AppDelegate

 6 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 7     

 8     self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];

 9     self.window.backgroundColor = [UIColor whiteColor];

10     [self.window makeKeyAndVisible];

11     

12     // 新建提示框 (小诀窍：用换行符来撑大UIAlert)

13     UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示框" message:@"hello word!\n\n\n\n\n\n\n\n\n\n" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];

14     // 设置Alert的样式（一个文本输入框，一个密码框）

15     [alert setAlertViewStyle:UIAlertViewStyleLoginAndPasswordInput];

16 //    typedef  enum{

17 //        UIAlertViewStyleDefault, // 默认样式

18 //        UIAlertViewStyleLoginAndPasswordInput, // 有登陆效果的提示框（一个文本输入框，一个密码输入框）

19 //        UIAlertViewStylePlainTextInput, // 文本输入框

20 //        UIAlertViewStyleSecureTextInput // 密码输入框

21 //    }UIAlertViewStyle

22     

23     // 创建UITextField来关联UIAlert的输入框并设置键盘响应的样式

24     UITextField* field = [alert textFieldAtIndex:0];

25     UITextField* field2 = [alert textFieldAtIndex:1];

26     // 设置键盘类型

27     field.keyboardType = UIKeyboardTypeNumberPad;

28     field2.keyboardType = UIKeyboardTypeNumbersAndPunctuation;

29     

30     // 添加子视图 [UIAlert需都为nil] (加载控件) UIActivityIndicatorView

31     UIActivityIndicatorView* activeView = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

32     activeView.center = CGPointMake(alert.bounds.size.width/2.0f, alert.bounds.size.height-40.f);

33     [activeView startAnimating];

34     [alert addSubview:activeView];

35     alert.backgroundColor = [UIColor redColor];

36     // 展示提示框

37     [alert show];

38 

39     return YES;

40 }

UIButton弹窗

 1 #import "AppDelegate.h"

 2 

 3 @interface AppDelegate ()<UIAlertViewDelegate> // 签UIAlertViewDelegate协议

 4  // 协议方法按住comm键，用鼠标点进去看

 5 @end

 6 @implementation AppDelegate

 7 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 8     // Override point for customization after application launch

 9     self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];

10     self.window.backgroundColor = [UIColor whiteColor];

11     [self.window makeKeyAndVisible];

12     

13     // 设置按钮，并初始化位置及大小

14     UIButton* button = [[UIButton alloc]initWithFrame:CGRectMake(20, 20, 80, 30)];

15     // 设置按钮背景颜色

16     button.backgroundColor = [UIColor blueColor];

17     // 设置显示文本及状态

18     [button setTitle:@"AlertView" forState:UIControlStateNormal];

19     // 添加按钮点击事件

20     [button addTarget:self action:@selector(showAlert:) forControlEvents:UIControlEventTouchUpInside];

21     // 添加按钮倒窗口

22     [self.window addSubview:button];

23     return YES;

24 }

25 // 响应按钮点击事件

26 // 提示框也可以自定义，使用UI View及各种空件的排列组合实现

27 // Title:标题；message:内容；delegate:代理；其他的是按钮，按钮可以多个也可以没有

28 - (void)showAlert:(id)sender{

29     // 索引时，“确定”的下标为0，“取消”的下标为1，以此类推。但显示时，@”确定“排列在最后，其他的安顺序排列

30     UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"提示内容" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"取消", nil];

31     

32     /* 如果设置按钮为空时，想让提示框消失可以使用延时器设置好间隔时间让提示框自动消失；

33      UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"提示内容" delegate:self cancelButtonTitle:nil otherButtonTitles:nil];

34      // 延时器 ， repeats：循环  监听dian:事件

35      [NSTimer scheduledTimerWithTimeInterval:2.0f target:self selector:@selector(dian:) userInfo:aler repeats:NO]; */

36     // 展示提示框

37     [alert show];

38 }

39 /* - (void)dian:(NSTimer*)sender{

40     NSLog(@"监视器");

41     NSLog(@"%@",sender.userInfo);

42     // 取消提示框  sender.userInfo提示框对象

43     [sender.userInfo dismissWithClickedButtonIndex:0 animated:YES];

44 } */

45 

46 // 使用UIAlertViewDelegate协议方法

47 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

48     // 点击按钮后，获取按钮的索引值

49     switch (buttonIndex) {

50         case 0:{

51             // 点击按钮后可以执行操作，如跳转页面......等等

52             NSLog(@"您点击了确定按钮");

53             break;

54         }case 1:{

55             NSLog(@"您点击了取消按钮");

56         }

57         default:

58             break;

59     }

60 }

61 // 实现取消按钮的监听

62 - (void)alertViewCancel:(UIAlertView *)alertView{

63     NSLog(@"您点击的取消按钮!!!");

64 }

代理弹窗

 1 #import "AppDelegate.h"

 2 

 3 @interface AppDelegate () <UIAlertViewDelegate> // 签UIAlertViewDelegate协议

 4 // 协议方法按住comm键，用鼠标点进去看

 5 @end

 6 @implementation AppDelegate

 7 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 8     // Override point for customization after application launch

 9     self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];

10     self.window.backgroundColor = [UIColor whiteColor];

11     [self.window makeKeyAndVisible];

12 

13     UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示框" message:@"hello word!" delegate:self cancelButtonTitle:[self noButtonTitle] otherButtonTitles:[self yesButtonTitle], nil];

14     // 展示提示框

15     [alert show];

16     

17     return YES;

18 }

19 // yes按钮

20 - (NSString*)yesButtonTitle{

21     return @"Yes";

22 }

23 // no按钮

24 - (NSString*)noButtonTitle{

25     return @"No";

26 }

27 // 判断用户按下的是Yes还是No (代理方法)

28 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

29     NSString* buttonTitle = [alertView buttonTitleAtIndex:buttonIndex];

30     if ([buttonTitle isEqualToString:[self yesButtonTitle]]) {

31         NSLog(@"User pressed the Yes button");

32     }else if([buttonTitle isEqualToString:[self noButtonTitle]]){

33         NSLog(@"User pressed the No button");

34     }

35 }