Question

I’m with a project in which I have a UIScrollView inside a UIView. Inside the UIScrollView has to see a list of buttons in 3 columns and X rows. I have the code that displays the buttons, but does not inserted into the UIScrollView, it prints over and does not scroll. Besides this, also cover the TabBar I have in the bottom of the view.

The code of the function that displais the buttons is

for (int y_axis=0; y_axis<=3; y_axis++)
    {
        for (int x_axis=0; x_axis<=2; x_axis++)
        {

            UIButton *btn=[[UIButton alloc] initWithFrame:CGRectMake(16+100*x_axis,100.0+115*y_axis,88.0 ,88.0)];
            btn.backgroundColor=[UIColor brownColor];
            [self.view addSubview:btn];

        }
    }

How can I do to display this in the UIScrollView? Thanks!!

Answer 1

Assuming you have a UIScrollView scroller, you have to change your last line to this;

[self.scroller addSubview:btn];

If not, you are adding it to the view, and not the scroller. Also, you have to change the scrollers contentsize, which is the X*Y if how much it contains. For it to contain the whole screen and nothing more;

[self.scroller setContentSize:CGSizeMake(320, 480)]
                                         ^     ^

Replace that with the width and the height you want to scroll. Each time you add a button below your new buttons, you should update the contentsize.