Autoresize UITextView and UIScrollView

[dennis3484]

Hello guys,

I already did several searches on the Forum and Google, but I couldn't find a solution to my problem.

I have a Detail View for a product that includes a UIScrollView and a few subviews (UIImageView, UILabel, UITextView). You can find an example here.

First I wanna autoresize the UITextView (not the text itself!) to the corresponding height. Then I wanna autoresize the entire UIScrollView so that it fits the height of my UITextView and the elements above it. I've tried the following code:

myUITextView.frame = CGRectMake(2.0, 98.0, 316.0, self.view.bounds.size.height);

[scrollView setContentOffset:CGPointMake(0.0, 0.0) animated:NO];
scrollView.contentSize = CGSizeMake(320.0, 98.0 + [myUITextView frame].size.height);

[self.view addSubview:scrollView];

*98.0 + [myUITextView frame].size.height)* because my thought was: After getting the height of myUITextView, add the height of the other subviews (98.0) to it.

Unfortunately it doesn't work very well. Depending on the content of the UIScrollView, it is too short or too long. I did some logging with the result that the height of the UITextView is always the same:

> 2010-01-27 14:15:45.096 myApp[1362:207] [myUITextView frame].size.height: 367.000000

Thanks!

[beleg_1998]

did you ever figure this one out?

[azdev]

Since your UIScrollView is doing the scrolling and not the UITextView, myUITextView can't have a fixed height.

Use:

myUITextView.text = someString;
CGRect frame = myUITextView.frame;
frame.size.height = myUITextView.contentSize.height;
myUITextView.frame = frame;

[beleg_1998]

What I did was create a delegate from the table to the view controller that controls the size of the scrollview. Then when the table is done rendering, I call a delegate function to update the size of the scroolview. It works perfectly except for one thing. I am not sure how to calculate the size of the table to send to this delegate. I tried self.view.bounds.size.height but I keep getting null. Right now I am just sending it a test number. It works, but I don’t want to leave this hardcoded. Did you run into this problem. I will post my solution if I ever figure it out. Thanks.

[beleg_1998]

Originally Posted by beleg_1998

What I did was create a delegate from the table to the view controller that controls the size of the scrollview. Then when the table is done rendering, I call a delegate function to update the size of the scroolview. It works perfectly except for one thing. I am not sure how to calculate the size of the table to send to this delegate. I tried self.view.bounds.size.height but I keep getting null. Right now I am just sending it a test number. It works, but I don’t want to leave this hardcoded. Did you run into this problem. I will post my solution if I ever figure it out. Thanks.

I was doing this:

NSLog(@"This is the height of the view: %@", self.tableView.frame.size.height);

I was always getting null was because I was not taking into account that the height is a float, like so:


CGFloat viewHeight = self.tableView.frame.size.height;
NSLog(@"This is the height of the view: %f", viewHeight);

thanks