Showing a selection list on a popup using UIActionSheet

Question

I'm developing an iOS 5.0+ app with latest SDK.

I want to show a popup with some options to choose. But I don't know how to do it.

I have this code to show an UIActionSheet with a seven buttons:

- (void)setUserActivity
{
    activityActionSheet = [[UIActionSheet alloc] initWithTitle:nil
                                                     delegate:nil
                                            cancelButtonTitle:@""
                                       destructiveButtonTitle:nil
                                            otherButtonTitles:nil];

    [activityActionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];


    for (int index = 0; index < 7; index++)
    {
        UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [button addTarget:self
                   action:@selector(activitySelected:)
         forControlEvents:UIControlEventTouchDown];
        CGRect frame = CGRectMake(0.0, index*40 + 10, 160.0, 40.0);
        button.frame = frame;
        button.tag = index;
        [button setTitle:[NSString stringWithFormat:@"Button %d", index] forState:UIControlStateNormal];

        [activityActionSheet addSubview:button];
    }

    CGRect toolbarFrame = CGRectMake(0, 0, activityActionSheet.bounds.size.width, 44);
    UIToolbar* controlToolbar = [[UIToolbar alloc] initWithFrame:toolbarFrame];

    [controlToolbar setBarStyle:UIBarStyleBlack];
    [controlToolbar sizeToFit];

    UIBarButtonItem* spacer =
    [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
                                                  target:nil
                                                  action:nil];

    UIBarButtonItem* setButton =
    [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Set", nil)
                                     style:UIBarButtonItemStyleDone
                                    target:self
                                    action:@selector(dismissActivityActionSheet)];

    UIBarButtonItem* cancelButton =
    [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Cancel", nil)
                                     style:UIBarButtonItemStyleBordered
                                    target:self
                                    action:@selector(cancelActivityActionSheet)];
    [controlToolbar setItems:[NSArray arrayWithObjects:spacer, cancelButton, setButton, nil]
                    animated:NO];
    [activityActionSheet addSubview:controlToolbar];

    [activityActionSheet showInView:self.view];
    [activityActionSheet setBounds:CGRectMake(0, 0, 320, 485)];
}

And this is what I get:

How can I add a scroll to allow user click on button 6? Or, is there a better approach to do it?

Answer 1

You should add an UIScrollView between your buttons and the ActivityActionSheet...

...
UIScrollView *myButtonScroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,160,441)];

for (int index = 0; index < 7; index++)
{
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self
               action:@selector(activitySelected:)
     forControlEvents:UIControlEventTouchDown];
    CGRect frame = CGRectMake(0.0, index*40 + 10, 160.0, 40.0);
    button.frame = frame;
    button.tag = index;
    [button setTitle:[NSString stringWithFormat:@"Button %d", index] forState:UIControlStateNormal];


    //[activityActionSheet addSubview:button];
    [myButtonScroll addSubView:button];
}

[myButtonScroll setContentSize:CGSizeMake(160, 7*40 + 20)];
[activityActionSheet addSubView:myButtonScroll];
...

Assuming there are only 7 buttons on your view...