How to align text inside textView vertically?
The above answer is correct, just want to add solution for those updating the textView on real time/onEditing.
Use the above extension and add the delegate method as well.
func textViewDidChange(_ textView: UITextView) {
textView.centerVertically()
}
If you want to do this using the storyboard, you could add a view inside of your textView. Then, set the constraints that you used for the textView to the new view. Finally, add the following constraints to your text view:
- (right and left) O and point to the new view
using the alignment constraints, add a vertically constraint.
Link your Text View to your View Controller and name it as you want (let's say textView
).
In viewDidLayoutSubviews
function put this line:
textView.centerVertically()
Then under the last curly bracket of your class put this extension:
extension UITextView {
func centerVertically() {
let fittingSize = CGSize(width: bounds.width, height: CGFloat.greatestFiniteMagnitude)
let size = sizeThatFits(fittingSize)
let topOffset = (bounds.size.height - size.height * zoomScale) / 2
let positiveTopOffset = max(1, topOffset)
contentOffset.y = -positiveTopOffset
}
}
To use this function in Swift 2.0
just change CGFloat.greatestFiniteMagnitude
to CGFloat.max
src: https://github.com/soonin/IOS-Swift-UITextViewAlignTextVertically/blob/master/IOS-Swift-UITextViewAlignTextVertically/Extentions.swift
extension UITextView {
func centerVerticalText() {
var topCorrect = (self.bounds.size.height - self.contentSize.height * self.zoomScale) / 2
topCorrect = topCorrect < 0.0 ? 0.0 : topCorrect
self.contentInset.top = topCorrect
}
}
Edit: It's recommended to call it in layoutSubviews()