Question

我有一个字符串：＆＃34;制作牙膏和漱口水的想法＆＃34;。

我使用下面的代码来获取标签上的最后一个字符串。结果字符串最后一行：＆＃34;和一个漱口水。＆＃34; 但标签显示的最后一行：＆＃34;牙膏和漱口水＆＃34; 如何在标签上获得完全字符串的最后一行？这是我的代码：

#clientform
  = form_for(@booking, html: { class: "form-horizontal", role: "form" }) do |f|
    - if @booking.errors.any?
      .alert.alert-danger.alert-dismissable role="alert"
        button.close type="button" data-dismiss="alert"
          span aria-hidden="true"
            | &times;
          span.sr-only
            | Close
        h4= "#{pluralize(@booking.errors.count,"error")} prohibited this booking from being saved:"
        ul
          - @booking.errors.full_messages.each do |msg|
            li= msg

    #selectcourse
      .form-group
        = f.label :course
        = f.collection_select :course_id, Course.order(:title),:id,:title, {prompt: "Choose a course", include_blank: true}, {class: "form-control"}

      .form-group
        .col-sm-12
          .next
            = link_to 'Next', '#', remote: true, class: "btn btn-primary"
    #selectdate
      .form-group
       = f.label :date
       = f.collection_select :date, dates, :to_s, :to_s, include_blank: false

.form-group
  .col-sm-12
    .next
      = link_to 'Next', '#', remote: true, class: "btn btn-primary"


    .form-group.hidden
      .col-sm-offset-2.col-sm-10
        = f.submit class: "btn btn-primary"

Answer 1

您可以使用NSRange获取代码下方的字符串，以帮助您： -

NSString *strSource=@"The idea of making a toothpaste and a mouthwashg";
NSRange r1 = [strSource rangeOfString:@"toothpaste"];
NSRange r2 = [strSource rangeOfString:@"mouthwashg"];
NSRange rSub = NSMakeRange(r1.location , r2.location + r2.length - r1.location );
NSLog(@"your string:%@",[strSource substringWithRange:rSub]);

问题获取Label中的行数组

1 个答案: