UITextView Tutorial

UITextViewTutorialViewController.h

//
//  UITextViewTutorialViewController.h
//  UITextViewTutorial
//
//  Created by chanju Jeon on 11. 5. 4..
//  Copyright 2011 Talk on :Play. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface UITextViewTutorialViewController : UIViewController <UITextViewDelegate> {
    
    UITextView *textView;
    UILabel *countLabel;
}

@property (nonatomic, retain) IBOutlet UITextView *textView;
@property (nonatomic, retain) IBOutlet UILabel *countLabel;

@end

UITextViewTutorialViewController.m

//
//  UITextViewTutorialViewController.m
//  UITextViewTutorial
//
//  Created by chanju Jeon on 11. 5. 4..
//  Copyright 2011 Talk on :Play. All rights reserved.
//

// 생략

#pragma - Textview delegate

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
    // Any new character added is passed in as the "text" parameter
    if([text isEqualToString:@"\n"]) {
        // Be sure to test for equality using the "isEqualToString" message
        [textView resignFirstResponder];
        
        // Return FALSE so that the final '\n' character doesn't get added
        return FALSE;
    }
    
    // For any other character return TRUE so that the text gets added to the view
    return TRUE;
}

- (void)textViewDidChange:(UITextView *)textView {
    countLabel.text = [NSString stringWithFormat:@"%d", [textView.text length]];
}