Highly adaptive UITextView for iOS Dev (59)

Highly adaptive UITextView for iOS Dev (59)

 

The following _ inputTextView is a UITextView instance. First, set its delegate, and then add UITextViewDelegate to the interface declaration of your header file.

_inputTextView.delegate = self;

Implement the following methods in implementation:

-(Void) textViewDidChange :( UITextView *) textView {// obtain the original frame CGRect tmpRect = _ inputTextView. frame; CGSize size = [_ inputTextView. text sizeWithFont: [UIFont systemFontOfSize: _ inputTextFontSize] constrainedToSize: CGSizeMake (YOUR_TEXTVIEW_WIDTH, 2000) lineBreakMode: NSLineBreakByWordWrapping]; tmpRect. size. height = size. height + 20; // 20 points for padding tmpRect. origin. y = keyboardPositionY-tmpRect. size. height; _ inputTextView. frame = tmpRect; _ inputTextView. text = _ inputTextView. text ;}

• Note that the above YOUR_TEXTVIEW_WIDTH is the width of your UITextView.
• Note that NSLineBreakByWordWrapping is selected for lineBreakMode. in earlier versions, UILineBreakModeWordWrap is used.
• size.height + 2020 is the padding that I flow out.
• These articles are from blog.csdn.net/prevention.

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  Reprinted please indicate from: http://blog.csdn.net/prevention