CODEWITHSUNDEEP
iosswiftuitextview
Khoury
Khoury

Reputation: 431

How to dynamically resize text size in a UITextView on iPhone 4S Swift

My app shows a string array that iterates through by button press. It works perfectly on all devices except iPhone 4S. The problem is some string elements are to long to fit within the UITextView and you have to scroll to read the rest of it, which I do not want.

So, my question is how to dynamically shrink attributed text to fit within a constrained UITextView when it doesn't fit all the string element?

Let me know if this is possible, Thanks guys.

Upvotes: 2

Views: 2448

Answers (2)

Kishore Kumar
Kishore Kumar

Reputation: 4375

Use this in your textview category class to fit font size depend upon width.

-(BOOL)sizeFontToFit:(NSString*)aString minSize:(float)aMinFontSize maxSize:(float)aMaxFontSize 
{   
float fudgeFactor = 16.0;
float fontSize = aMaxFontSize;

self.font = [self.font fontWithSize:fontSize];

CGSize tallerSize = CGSizeMake(self.frame.size.width-fudgeFactor,kMaxFieldHeight);
CGSize stringSize = [aString sizeWithFont:self.font constrainedToSize:tallerSize lineBreakMode:UILineBreakModeWordWrap];

while (stringSize.height >= self.frame.size.height)
       {
       if (fontSize <= aMinFontSize) // it just won't fit
           return NO;

       fontSize -= 1.0;
       self.font = [self.font fontWithSize:fontSize];
       tallerSize = CGSizeMake(self.frame.size.width-fudgeFactor,kMaxFieldHeight);
       stringSize = [aString sizeWithFont:self.font constrainedToSize:tallerSize lineBreakMode:UILineBreakModeWordWrap];
       }

return YES; 
}

Upvotes: 0

Flipper
Flipper

Reputation: 1107

Why are you using UITextView, when you can use UILabel for you situation. UITextView does not have autoscaling property. With UILabel you can set number of lines and it has Autoshrinkproperty where you can set Minimum font scale or Minimum font size that will adjust your text accordingly to UILabel size. Or just allow scrolling with UITextView.

Upvotes: 3

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