how can I limit input to 5 lines in a UITextView on iPad?

I have a UITextView in which the user enters lines of text. After the entry of the text I take a screen capture. Problem is, if you enter more than visible lines in textView,开发者_如何学JAVA you can't screen capture all the text. I tried disabling scrolling, but that makes it worse because text entry from keyboard makes the textview scroll into non-visible area and there's no way for the user to scroll text down again. Thanks in advance for your help.

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UITextView is also a ScrollView, so you can use it's contentSize property to only allow text input if the text fits the textView like this:

-(BOOL) textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
    // Only allow text input if the size of the content is smaller than the size of the textView
    return (textView.contentSize.height < textView.bounds.size.height);
}

You will also need to disable the scrolling like you did, to make the UI look good.