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An UITextView which grows/shrinks with the text and starts scrolling when the content reaches a certain number of lines. Similar to the one Apple uses in the SMS-app. See blog-post for a small screencast.

License: MIT License

growingtextview's Introduction

HPGrowingTextView

Multi-line/Autoresizing UITextView similar as in the SMS-app. The example project mimicks the look of Apple's SMS-app.

Properties

int maxNumberOfLines; // Stops growing at this amount of lines.
int minNumberOfLines; // Starts growing at this amount of lines.
int maxHeight; // Specify the maximum height in points instead of lines.
int minHeight; // Specify the minimum height in points instead of lines.
BOOL animateHeightChange; // Animate the growing
NSTimeInterval animationDuration; // Adjust the duration of the growth animation.

UITextView borrowed properties

NSString *text;
UIFont *font;
UIColor *textColor;
NSTextAlignment textAlignment;
NSRange selectedRange;
BOOL editable;
UIDataDetectorTypes dataDetectorTypes;
UIReturnKeyType returnKeyType;

If you want to set other UITextView properties, use .internalTextView

Delegate methods

-(BOOL)growingTextViewShouldBeginEditing:(HPGrowingTextView *)growingTextView;
-(BOOL)growingTextViewShouldEndEditing:(HPGrowingTextView *)growingTextView;

-(void)growingTextViewDidBeginEditing:(HPGrowingTextView *)growingTextView;
-(void)growingTextViewDidEndEditing:(HPGrowingTextView *)growingTextView;

-(BOOL)growingTextView:(HPGrowingTextView *)growingTextView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text;
-(void)growingTextViewDidChange:(HPGrowingTextView *)growingTextView;

// Called WITHIN animation block!
-(void)growingTextView:(HPGrowingTextView *)growingTextView willChangeHeight:(float)height;

// Called after animation
-(void)growingTextView:(HPGrowingTextView *)growingTextView didChangeHeight:(float)height;

-(void)growingTextViewDidChangeSelection:(HPGrowingTextView *)growingTextView;
-(BOOL)growingTextViewShouldReturn:(HPGrowingTextView *)growingTextView;