iOS中的模态提示类名？

Question

所以我完全在类的名称上画了一个空白，该类用多个选项绘制其中一个模态提示。我附上了截图。这是确认用户是否想要退出的提示。

Answer 1

这是UIActionSheet，请阅读UIActionSheet Class Reference。

实施例

在标题中，您需要添加<UIActionSheetDelegate>协议。然后在您的@implementation中，您将如何称呼此特定工作表：

UIActionSheet * sampleSheet = [[UIActionSheet alloc] initWithTitle:@"Are you sure you'd like to sign out from Path?" delegate:self 
                                        cancelButtonTitle:@"Cancel" destructiveButtonTitle:@"Sign Out" otherButtonTitles:nil];

[sampleSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];
[sampleSheet showInView:self.view];

这就是你处理工作表的方式：

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 
{
    switch ( buttonIndex )
    {
        case 0:
            NSLog(@"User Chose Cancel");
            break;

        case 1:
            NSLog(@"User Chose to Sign out.");
            break;
    }
}

Answer 2

您需要UIActionSheet Class Reference

Answer 3

请参阅UIActionSheet，我认为这是您正在寻找的课程。

Answer 4

UIActionSheet *popupQuery;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { 

    //give the user an option to choose an image from their library or take a new photo...
    popupQuery = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Take Photo", @"Choose From Library", nil];

    popupQuery.tag = 0;
}
else {

    //give the user an option to choose an image from their library or take a new photo...
    popupQuery = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Choose From Library", nil];

    popupQuery.tag = 1;
}
popupQuery.actionSheetStyle = UIActionSheetStyleBlackOpaque;
[popupQuery showInView:[self.view window]];

[popupQuery release];