巧用UITextView实现富文本的点击效果

项目中要实现的效果

需求.png

1.现在较好的第三方 TYAttributedLabel可以很方便的实现各种富文本效果

但是项目中用到富文本效果的地方不是很多,所以自己就想找个更加简单的方法.具体方法如下
先设置NSLinkAttributeName属性

//用UItextView 实现富文本的功能
    UITextView *detail = [[UITextView alloc] initWithFrame:CGRectMake(0, ViewMaxY(loginBtn)+10, SCREEN_WIDTH, 30)];
    detail.backgroundColor = RGB(249, 249, 249);
    detail.font = [UIFont systemFontOfSize:14];
    detail.textAlignment = NSTextAlignmentCenter;
    detail.delegate = self;
    detail.editable = NO;
    detail.scrollEnabled = NO;
    
    NSMutableAttributedString *myStr = [[NSMutableAttributedString alloc] initWithString:@"*登录即表示你同意《体教联盟用户协议》"];
    
    NSMutableParagraphStyle *paragraphStyleFirst = [[NSMutableParagraphStyle alloc] init];
    paragraphStyleFirst.alignment = NSTextAlignmentCenter;
    
  //绑定标签跳转
    [myStr addAttribute:NSLinkAttributeName
                  value:@"mytest://"
                  range:[[myStr string] rangeOfString:@"《体教联盟用户协议》"]];
    [myStr addAttribute:NSForegroundColorAttributeName
                  value:RGB(153, 153, 153)
                  range:[[myStr string] rangeOfString:@"*登录即表示你同意"]];
    [myStr addAttribute:NSParagraphStyleAttributeName value:paragraphStyleFirst range:NSMakeRange(0, myStr.length)];
    
    detail.linkTextAttributes = @{NSForegroundColorAttributeName: RGB(80, 140, 238),
                                  NSUnderlineColorAttributeName: [UIColor redColor],
                                  NSUnderlineStyleAttributeName: @(NSUnderlinePatternSolid)};
    
    detail.attributedText = myStr;

然后在textView代理方法,点击link时拦截

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
    if ([[URL scheme] isEqualToString:@"mytest"]) {
        //跳转界面或者其他事情
        
        return NO;
    }
    
    return YES;
}

最终实现效果

最终效果.gif