IOS中UIActionSheet使用方法详解

一、初始化方法

- (instancetype)initWithTitle:(NSString *)title delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle destructiveButtonTitle:(NSString *)destructiveButtonTitle otherButtonTitles:(NSString *)otherButtonTitles, ...;

参数说明：

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

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：

typedef NS_ENUM(NSInteger, UIActionSheetStyle) {

UIActionSheetStyleAutomatic        = -1,

UIActionSheetStyleDefault          = UIBarStyleDefault,

UIActionSheetStyleBlackTranslucent = UIBarStyleBlackTranslucent,

UIActionSheetStyleBlackOpaque      = UIBarStyleBlackOpaque,

};

- (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