iOS-登录，注册隐私政策，用户协议-蒲公英云

iOS-登录，注册隐私政策，用户协议

在写登录，注册界面时，我们会碰到两个按钮，一个是隐私政策，一个是用户协议，分别是要跳转到相应的链接或者PDF查看。之前博主的想法是在UILabel上添加两个UIButton，@”隐私政策”,@”用户协议”上各自添加一个UIButton；一个是计算@”我已阅读并同意”字符串的长度，然后以此为起点，以@”隐私政策”字符串的末尾为结尾，另一个按钮以@”用户协议”开始作为起点尾部作为结尾，最终发现这样有些麻烦，经过一番百度，发现UITextView有一个方法- (void)addAttribute:(NSAttributedStringKey)name value:(id)value range:(NSRange)range;可以帮我们完成这件事，截图如下：

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pbmdnZVFpbmdjaHVu_size_16_color_FFFFFF_t_70 具体完成的方法，创建代码如下：

博主经过了国际化操作，粘贴处字符串代表的意思：

"register_user_readagree" = "我已阅读并同意";
"register_user_privacypolicy" = "隐私条款";
"register_user_useragreement" = "用户协议";
/// 同意
    UIButton *btnAgree = [UIButton buttonWithType:UIButtonTypeCustom];
    self.btnAgree = btnAgree;
    btnAgree.selected = YES;
    [btnAgree setBackgroundImage:[UIImage imageNamed:@"OCR_agree"] forState:UIControlStateSelected];
    [btnAgree setBackgroundImage:[UIImage imageNamed:@"OCR_noAgree"] forState:UIControlStateNormal];
    [self addSubview:btnAgree];
    [btnAgree mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(16);
        make.top.equalTo(btnCommit.mas_bottom).offset(20);
        make.width.height.mas_equalTo(40);
    }];
    [btnAgree addTarget:self
                 action:@selector(agreeAction:)
       forControlEvents:UIControlEventTouchUpInside];
    /// 同意文本
    UITextView *tvAgree = [[UITextView alloc]init];
    self.tvAgree = tvAgree;
    tvAgree.userInteractionEnabled = YES;
    tvAgree.font = SET_FONT(12.0);
    tvAgree.textColor = TextLightGrayCOLOR;
    tvAgree.editable = NO;//必须禁止输入，否则点击将弹出输入键盘
    tvAgree.scrollEnabled = NO;
    tvAgree.delegate = self;
    tvAgree.textContainerInset = UIEdgeInsetsMake(0,0, 0, 0);
    [self addSubview:tvAgree];
    [tvAgree mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.mas_equalTo(-16);
        make.left.mas_equalTo(30);
        make.centerY.equalTo(btnAgree.mas_centerY);
        make.height.mas_equalTo(20);
    }];
    NSString *agreeStr = [NSString stringWithFormat:@"%@《%@》《%@》",BZLocalizedString(@"register_user_readagree", nil),BZLocalizedString(@"register_user_privacypolicy", nil),BZLocalizedString(@"register_user_useragreement", nil)];/// @"我已阅读并同意《隐私政策》《用户协议》";
    NSMutableAttributedString *diffString = [[NSMutableAttributedString alloc] initWithString:agreeStr];
    [diffString addAttribute:NSForegroundColorAttributeName value:tvAgree.textColor range:[[diffString string] rangeOfString:BZLocalizedString(@"register_user_readagree", nil)]];/// @"我已阅读并同意"
    [diffString addAttribute:NSLinkAttributeName
                           value:@"privacy://"
                           range:[[diffString string] rangeOfString:[NSString stringWithFormat:@"《%@》",BZLocalizedString(@"register_user_privacypolicy", nil)]]];/// 《隐私政策》
    [diffString addAttribute:NSLinkAttributeName
                       value:@"delegate://"
                       range:[[diffString string] rangeOfString:[NSString stringWithFormat:@"《%@》",BZLocalizedString(@"register_user_useragreement", nil)]]];/// 《用户协议》
    tvAgree.linkTextAttributes = @{NSForegroundColorAttributeName: MainThemeColor};
    tvAgree.attributedText = diffString;

UITextView的NSLinkAttributeName属性，就是点击链接跳转

实现UITextView的代理，调用如下：

#pragma mark - UITextViewDelegate
/// 隐私,协议
- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
    /// 隐私
    if ([[URL scheme] isEqualToString:@"privacy"]){
        /// 跳转隐私政策界面
    }
    /// 协议
    else if ([[URL scheme] isEqualToString:@"delegate"]) {
        /// 跳转用户协议界面
    }
    return YES;
}

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange方法就是处理UITextView的URL点击链接处理方法，因此这样我们就能省了一点事，效果如下：