UIActionSheet动态添加按钮

@interface ViewController : UIViewController
<UIActionSheetDelegate>

@end

#pragma -mark -functions
//点击任何处，弹出UIActionSheet
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UIActionSheet *sheet=[[UIActionSheet alloc]initWithTitle:@"标题" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil, nil];
    
    // 逐个添加按钮（比如可以是数组循环）
    [sheet addButtonWithTitle:@"Item A"];
    [sheet addButtonWithTitle:@"Item B"];
    [sheet addButtonWithTitle:@"Item C"];
    // 同时添加一个取消按钮
    [sheet addButtonWithTitle:@"Cancel"];
    
    sheet.cancelButtonIndex = sheet.numberOfButtons-1;
    [sheet showInView:self.view];
    
}
#pragma -mark -UIActionSheetDelegate
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSLog(@"--buttonIndex--%ld",buttonIndex);
}