UIActionSheetTest

学习UIActionSheet的常用方法

介绍

这是非常常用的一种控件了，比如一般的换头像和退出登录都会用到这个控件。

效果图

使用方法

//.h文件中  
@interface ViewController : UIViewController <UIActionSheetDelegate>  
  
- (IBAction)changeAvata:(id)sender;  
  
@end  
  
//.m文件中  
  
- (IBAction)changeAvata:(id)sender {  
    //创建一个UIActionSheet，其中destructiveButton会红色显示，可以用在一些重要的选项  
    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"更换头像" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照", @"从相册选择", nil nil];  
      
    //actionSheet风格，感觉也没什么差别- -  
    actionSheet.actionSheetStyle = UIActionSheetStyleDefault;//默认风格，灰色背景，白色文字  
//    actionSheet.actionSheetStyle = UIActionSheetStyleAutomatic;  
//    actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;  
//    actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;//纯黑背景，白色文字  
      
    //如果想再添加button  
//    [actionSheet addButtonWithTitle:@"其他方式"];  
      
    //更改ActionSheet标题  
//    actionSheet.title = @"选择照片";  
      
    //获取按钮总数  
    NSString *num = [NSString stringWithFormat:@"%ld", actionSheet.numberOfButtons];  
    NSLog(@"%@", num);  
      
    //获取某个索引按钮的标题  
    NSString *btnTitle = [actionSheet buttonTitleAtIndex:1];  
    NSLog(@"%@", btnTitle);  
      
    [actionSheet showInView:self.view];  
      
      
}  
  
#pragma mark - UIActionSheetDelegate  
//根据被点击的按钮做出反应，0对应destructiveButton，之后的button依次排序  
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {  
    if (buttonIndex == 1) {  
        NSLog(@"拍照");  
    }  
    else if (buttonIndex == 2) {  
        NSLog(@"相册");  
    }  
}  
  
//取消ActionSheet时调用  
- (void)actionSheetCancel:(UIActionSheet *)actionSheet {  
      
}  
  
//将要显示ActionSheet时调用  
- (void)willPresentActionSheet:(UIActionSheet *)actionSheet {  
      
}  
  
//已经显示ActionSheet是调用  
-(void)didPresentActionSheet:(UIActionSheet *)actionSheet {  
      
}  
  
//ActionSheet已经消失时调用  
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {  
      
}  
  
//ActionSheet即将消失时调用  
- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex {  
      
}  

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