CODEWITHSUNDEEP
iphoneiosuiviewuiscrollviewuibutton
Vladimir Stazhilov
Vladimir Stazhilov

Reputation: 1954

add UIButton to UIScrollView and then UIScrollView to UIView

I need to create a UIButton programatically and then put it on a created UIScrollView and then put the UIScrollView on a UIView. If add these elements to self.view they are displayed, but when I want to nest then they are not displayed. Here is what I have so far:

viewWithPictures=[[UIScrollView alloc] initWithFrame:self.bottomView.frame];
viewWithPictures.contentSize=CGSizeMake(160*[smallImagesFromGallery count], self.bottomView.frame.size.height);

viewWithPictures.backgroundColor=[UIColor greenColor];
NSLog(@"Number of small images: %i",[smallImagesFromGallery count]); 

for(int i=0; i<[smallImagesFromGallery count]; i++)
{
    UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];

    btn.frame=CGRectMake(self.bottomView.frame.origin.x+i*160, self.bottomView.frame.origin.y, 150, 100);

    [btn setBackgroundImage:[smallImagesFromGallery objectAtIndex:i] forState:UIControlStateNormal];
    if (btn==nil) {
        NSLog(@"Button is nil");
    }
    btn.tag=i;
    [btn addTarget:self action:@selector(viewLargeVersion:) forControlEvents:UIControlEventTouchUpInside];
    [viewWithPictures addSubview:btn];



}
[bottomView addSubview:viewWithPictures];

Upvotes: 1

Views: 1044

Answers (3)

Matt Garrod
Matt Garrod

Reputation: 878

When you're setting the frame of a view that will become a subview, you need to reference the bounds of the view that it will be added to. So I think you need to change a couple of lines:

viewWithPictures=[[UIScrollView alloc] initWithFrame:self.bottomView.frame];

should be:

viewWithPictures=[[UIScrollView alloc] initWithFrame:self.bottomView.bounds];

and

btn.frame=CGRectMake(self.bottomView.frame.origin.x+i*160, self.bottomView.frame.origin.y, 150, 100);

should be:

btn.frame=CGRectMake(i*160, 0, 150, 100);

Upvotes: 1

Krrish
Krrish

Reputation: 2256

viewWithPictures=[[UIScrollView alloc] initWithFrame:self.bottomView.frame];

to

viewWithPictures=[[UIScrollView alloc] initWithFrame:CGRectMake(0,0,self.bottomView.frame.size.width,self.bottomView.frame.size.height)];

and this

btn.frame=CGRectMake(self.bottomView.frame.origin.x+i*160, self.bottomView.frame.origin.y, 150, 100);

to

btn.frame=CGRectMake(i*160, self.bottomView.frame.origin.y, 150, 100);

This is just a suggestion.

Upvotes: 1

Clafou
Clafou

Reputation: 15400

Hard to tell without the rest of the code but could it just be that you aren't adding your container view (bottomView) to your view? Which you can do by adding this at the end: [self.view addSubview: bottomView]

Upvotes: 0

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