Resize font size to fill UITextView?

Question

How would I set the font size of text in a UITextView such that it fills the entire UITextView? I\'d like the user to type in their text, then have the text fill the entire

Answer 1

In viewDidLoad:

textView.textContainer.lineFragmentPadding = 0;
textView.textContainerInset = UIEdgeInsetsMake(0, 0, 0, 0);

You need to add UITextViewDelegate:

- (void)updateTextFont:(UITextView *)textView {

    CGSize textViewSize = textView.frame.size;
    CGSize sizeOfText = [textView.text sizeWithAttributes:@{NSFontAttributeName: textView.font}];

    CGFloat fontOfWidth = floorf(textView.font.pointSize / sizeOfText.height * textViewSize.height);
    CGFloat fontOfHeight = floorf(textView.font.pointSize / sizeOfText.width * textViewSize.width);

    textView.font = [textView.font fontWithSize:MIN(fontOfHeight, fontOfWidth)];
}