问题
In Swift, i have a UITextField on a table view cell, and when it's text becomes too long I would like the font size to decrease. I want to make it very clear that I am talking about a UITextField, not a UILabel or a UITextView. The reason I say this is because I have seen this question pop up several times and the answers were all based on UILabel instead of UITextField.
I hoped, that can be done in IB, where i did this settinngs of Min Font Size and ajust to fit, but this didn´t change anything:
Is there another way to resolve this?
回答1:
extension UITextField {
internal func resizeText() {
if let text = self.text{
self.font = UIFont.systemFontOfSize(14)
let textString = text as NSString
var widthOfText = textString.sizeWithAttributes([NSFontAttributeName : self.font!]).width
var widthOfFrame = self.frame.size.width
// decrease font size until it fits
while widthOfFrame - 5 < widthOfText {
let fontSize = self.font!.pointSize
self.font = self.font?.fontWithSize(fontSize - 0.5)
widthOfText = textString.sizeWithAttributes([NSFontAttributeName : self.font!]).width
widthOfFrame = self.frame.size.width
}
}
}
}
Based on the answer I linked, I created an extension to UITextField
that automatically resizes text - to have it properly resize the text each time, it needs to be called in a number of locations:
override func drawRect(rect: CGRect)
(I haven't found a better spot to call this as you have to wait until its bounds are set and the TVC lifecycle gets confusing)textField(textField: UITextField, shouldChangeCharactersInRange...
来源:https://stackoverflow.com/questions/37399573/cant-get-uitextfield-to-autoshrink-the-font