UITextView富文本实现跳转链接并实现文本居中-- 服务协议、隐私条款

实现效果

注册登录

UITextView *protocolTV = [[UITextView alloc] initWithFrame:CGRectZero];

protocolTV.editable=NO;

protocolTV.delegate=self;

NSMutableParagraphStyle *paragraph = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];

//设置text文字居中

paragraph.alignment=NSTextAlignmentCenter;

protocolTV.textContainerInset = UIEdgeInsetsMake(0, 0, 0, 0);

//设置添加链接部分文字的颜色

protocolTV.linkTextAttributes = @{NSForegroundColorAttributeName:TextBodyColor};

[wechatView addSubview:protocolTV];

NSString *str = @"注册登录即代表同意XX的服务协议和隐私条款";

NSRangeprotocalRange = [strrangeOfString:@"服务协议"];

NSRangeprivacyRange = [strrangeOfString:@"隐私条款"];

NSMutableAttributedString *privacyMutableAttrStr = [[NSMutableAttributedString alloc] initWithString:str attributes:@{NSFontAttributeName:[UIFont fontWithName:@"PingFang SC" size: 12],NSForegroundColorAttributeName:TextBodyColor,NSParagraphStyleAttributeName:paragraph}];

//给需要 点击的部分添加链接

[privacyMutableAttrStr addAttributes:@{NSLinkAttributeName:@"privacy://",NSFontAttributeName:[UIFont fontWithName:@"PingFangSC-Semibold" size: 12],NSUnderlineStyleAttributeName:@(NSUnderlineStyleSingle)} range:privacyRange];

[privacyMutableAttrStr addAttributes:@{NSLinkAttributeName:@"protocal://",NSFontAttributeName:[UIFont fontWithName:@"PingFangSC-Semibold" size: 12],NSUnderlineStyleAttributeName:@(NSUnderlineStyleSingle)} range:protocalRange];

protocolTV.attributedText= privacyMutableAttrStr;

[protocolTV mas_makeConstraints:^(MASConstraintMaker*make) {

           make.top.equalTo(self.wechatBtn.mas_bottom).offset(24);

           make.centerX.equalTo(bgview.mas_centerX);

           make.left.right.equalTo(bgview);

           make.height.mas_equalTo(15);

           make.width.equalTo(bgview.mas_width);

 }];

#pragma mark - UITextViewDelegate

-(BOOL)textView:(UITextView*)textViewshouldInteractWithURL:(NSURL*)URLinRange:(NSRange)characterRangeinteraction:(UITextItemInteraction)interaction{

    if ([URL.scheme isEqualToString:@"privacy"]) {

//这里调用方法跳到隐私条款页面

        returnNO;

    }

    if ([URL.scheme isEqualToString:@"protocal"]) {

//这里调用方法跳到服务协议页面

        returnNO;

    }

    return YES;

}

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其中也有遇到问题：UITextView文本内容居中

需要为文本设置NSMutableParagraphStyle

NSMutableParagraphStyle *paragraph = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];

//设置text文字居中

paragraph.alignment=NSTextAlignmentCenter;

再设置NSMutableAttributedString

NSParagraphStyleAttributeName:paragraph    设置段落样式

此解决方案来自iOS — NSMutableAttributedString和NSMutableParagraphStyle