UIAlertView 与 UIActionSheet （提示用户）的使用方法

UIAlertView 提示用户 帮助用户选择框

// UIAlertView *alterView = [[UIAlertView alloc] initWithTitle:@"警告" message:@"你还没把信息填完" delegate:nil cancelButtonTitle:@"cancle" otherButtonTitles:@"确认", nil];

// [alterView show];

// [alterView release];

AlterView *alterView = [[AlterView alloc] initWithTitle:@"警告" message:@"你还没把信息填完" delegate:self

cancelButtonTitle:@"cancle" otherButtonTitles:@"确认",@"再次确认" , nil];

alterView.tag=identifier;

[alterView release];

identifier++;

/**

title：视图标题

delegate：设置代理

cancelButtonTitle：取消按钮的标题

destructiveButtonTitle：特殊标记的按钮的标题

otherButtonTitles：其他按钮的标题

*/

UIActionSheet *actionSheet =[[UIActionSheet alloc]initWithTitle:@"提示" delegate:self cancelButtonTitle:@"cancel" destructiveButtonTitle:@"标题” //强调的 otherButtonTitles:@"选择1", @"选择2",@"选择3",nil];

[actionSheet showInView:self.window];

[actionSheet release];

二、常用方法和属性介绍

@property(nonatomic,copy) NSString *title;

设置标题

@property(nonatomic) UIActionSheetStyle actionSheetStyle;

设置风格，枚举如下：

?
- (NSInteger)addButtonWithTitle:(NSString *)title;

添加一个按钮，会返回按钮的索引

- (NSString *)buttonTitleAtIndex:(NSInteger)buttonIndex;

获取按钮标题

@property(nonatomic,readonly) NSInteger numberOfButtons;

获取按钮数量

@property(nonatomic) NSInteger cancelButtonIndex;

设置取消按钮的索引值

@property(nonatomic) NSInteger destructiveButtonIndex;

设置特殊标记

@property(nonatomic,readonly,getter=isVisible) BOOL visible;

视图当前是否可见

下面是几种弹出方式，会根据风格不同展现不同的方式

- (void)showFromToolbar:(UIToolbar *)view;

- (void)showFromTabBar:(UITabBar *)view;

- (void)showFromBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated ;

- (void)showFromRect:(CGRect)rect inView:(UIView *)view animated:(BOOL)animated ;

- (void)showInView:(UIView *)view;

- (void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated;

使用代码将视图收回

三、UIActionSheet代理方法

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex;

点击按钮时触发的方法

- (void)willPresentActionSheet:(UIActionSheet *)actionSheet;

视图将要弹出时触发的方法

- (void)didPresentActionSheet:(UIActionSheet *)actionSheet;

视图已经弹出式触发的方法

- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex;

点击按钮后，视图将要收回时触发的方法

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex;

点击按钮后，视图已经收回时触发的方法