ios uitextview自动字体大小

Question

我想要自动字体大小 大小UITextView想要更改字体大小。

https://github.com/AndroidDeveloperLB/AutoFitTextView

 if (self.ui_text.contentSize.height > self.ui_text.frame.size.height) {
    int fontIncrement = 1;
    while (self.ui_text.contentSize.height > self.ui_text.frame.size.height) {
        self.ui_text.font = [UIFont fontWithName:@"Copperplate" size:self.ui_text.font.pointSize - fontIncrement];
        fontIncrement++;   
    }
}else {
    int fontIncrement = 1;
    while (self.ui_text.contentSize.height >= self.ui_text.frame.size.height)    {
        self.ui_text.font = [UIFont fontWithName:@"Copperplate" size:8.0 + fontIncrement];
        fontIncrement++;

    }
}