UILabel上的怪异行为有时无法适应其内容

Question

I parse some json data and I populate some UILabels created programmatically, this is the code:

    pTitle = [[UILabel alloc] initWithFrame:CGRectMake(detailsView.frame.origin.x -10, pImage.frame.origin.y + pImage.frame.size.height + 15, detailsView.frame.size.width - 25, 30)];
    pTitle.textColor = [UIColor lowBlack];
    [pTitle setFont:[UIFont fontWithName:@"Arial" size:14.0]];
    pTitle.lineBreakMode = NSLineBreakByWordWrapping;
    pTitle.numberOfLines = 0;
    [detailsView addSubview:pTitle];

The frame is fine, but after I get the callBack and set the downloaded data to the UIlabel sometimes it resizes fine but sometimes every word creates a new line because it seems that the frame gets changed.

The only thing I do after downloading the json data is to set the content to the UILabel and then call:

[pTitle sizeToFit];

How can I fix this behaviour?

EDIT:

I found how to recreate the problem, basically if I download a product with a small name like "Test" the frame of the UILabel gets as big as the word so the next downloaded name won't be displayed larger than the word "Test". Is it caused by the sizeToFit method?

Answer 1

I had the same problem:

The solution that works to me was to redeclare the frame then again call the -sizeToFit again, something like this:

pTitle.frame = CGRectMake(detailsView.frame.origin.x -10, pImage.frame.origin.y + pImage.frame.size.height + 15, detailsView.frame.size.width - 25, 30);
[pTitle sizeToFit];