如何在 iOS 中处理 Storyboard ViewControllers？

Question

I have added 3 Views in ViewController, if 2nd/middle view has no text or it has one line text, the height of the middle view should be 30 and last view should move up at run time.

Answer 1

ADD THIS TO YOUR CODE:

CGSize maximumLabelSize = CGSizeMake(296, FLT_MAX);
CGSize expectedLabelSize = [yourString sizeWithFont:yourLabel.font constrainedToSize:maximumLabelSize lineBreakMode:yourLabel.lineBreakMode];   
CGRect newFrame = yourLabel.frame;
newFrame.size.height = expectedLabelSize.height;
yourLabel.frame = newFrame;

Answer 2

ADD this CODE

[yourlabel sizeToFit ]; or [yourView sizeToFit];