[Objective-C] UITextView에 커스텀 링크 연결

UITextView+CustomLink.h

#import <UIKit/UIKit.h>

@interface UITextView (CustomLink)
-(void)setCustomLink:(NSString*)string fontSize:(CGFloat)fontSize linkTextColor:(UIColor*)linkTextColor linkUnderLineColor:(UIColor*)linkUnderLineColor stringArray:(NSArray*)stringArray URLArray:(NSArray*)URLArray;
@end

UITextView+CustomLink.m

#import <CoreText/CoreText.h>

@implementation UITextView (CustomLink)

-(void)setCustomLink:(NSString*)string fontSize:(CGFloat)fontSize linkTextColor:(UIColor*)linkTextColor linkUnderLineColor:(UIColor*)linkUnderLineColor stringArray:(NSArray*)stringArray URLArray:(NSArray*)URLArray
{
    if (stringArray.count != URLArray.count)
    {
        return;
    }else{
        
        NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:string attributes:@{NSFontAttributeName :[UIFont systemFontOfSize:fontSize]}];
        
        NSDictionary *linkAttributes = @{NSForegroundColorAttributeName: linkTextColor,
                                         NSUnderlineColorAttributeName: linkUnderLineColor,
                                         NSUnderlineStyleAttributeName: @(NSUnderlinePatternSolid)};
        self.linkTextAttributes = linkAttributes;
        
        for (int i = 0; i < stringArray.count; ++i)
        {
            NSRange range = [string rangeOfString:[stringArray objectAtIndex:i]];
            [attString addAttribute:(NSString*)kCTUnderlineStyleAttributeName
                              value:[NSNumber numberWithInt:kCTUnderlineStyleSingle]
                              range:range];
            
            NSURL *URL = [NSURL URLWithString:[URLArray objectAtIndex:i]];
            [attString addAttribute:NSLinkAttributeName value:URL range:range];
        }
        self.attributedText = attString;
    }
}

@end

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
@property (weak, nonatomic) IBOutlet UITextView *textView;
@end

ViewController.m

#import "UITextView+CustomLink.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSString *strAgreement = @"서비스약관, 유료이용약관, 개인정보 취급방침에 동의합니다.";
    NSArray *textArray =@[@"서비스약관", @"유료이용약관", @"개인정보 취급방침"];
    NSArray *urlArray = @[@"agreement://0", @"agreement://1", @"agreement://2"];
    
    [self.textView setCustomLink:strAgreement fontSize:14 linkTextColor:[UIColor redColor] linkUnderLineColor:[UIColor redColor] stringArray:textArray URLArray:urlArray];
}

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange
{
    if ([URL.scheme isEqualToString:@"agreement"])
    {
        NSLog(@"select Link = %ld", URL.host.integerValue);
        return NO;
    }
    return YES;
}