使用当前日期和时间的RecyclerView动态部分标题 [英] Dynamic Section Header Of RecyclerView Using Current Date&Time

问题描述

我将使用RecyclerView作为节标题

我想在插入每个日期和时间时创建节标题SQLite数据库中的时间数据

我在下面的链接中找到了这个解决方案，但没有成功

• 
  
  

  上面的图像数据使用下面的代码或部分是静态的：

   列表<公司> childList = new ArrayList<>（）; 
  列表< CompanySectionHeader> sectionHeaders = new ArrayList<>（）; 
   
   childList = myDb.getAllCompany（）; 
   sectionHeaders.add（new CompanySectionHeader（childList，WEDNESDAY 4 APRIL，1））; 
    

  现在如果我输入今天的数据，那么我创建1个截面日期的日期

  
  
  

  图片数据部分下方标题仍为静态或数据：

  
  
  
  
  
  

  以上图片数据正在使用以下代码：

    childList.add（新公司（Ketul Inc.，11/11/2017 3:46 PM））; 
   childList.add（新公司（Atmel Corporation，09/19/2017 8:46 PM））; 
   childList.add（新公司（ABC Technologies，09/12/2017 7:41 PM））; 
   childList.add（新公司（Huron Capital Partners LLC，09/12/2017 7:25 PM））; 
   sectionHeaders = new ArrayList<>（）; 
   //创建SectionHeader列表DataModel实现SectionHeader 
   sectionHeaders.add（new CompanySectionHeader（childList，SATURDAY 7 APRIL，2））; 
    

  以下代码是我的 SectionHeader.Java ：

   公共类CompanySectionHeader实现Section< Company>，Comparable< CompanySectionHeader> {
   
   List< Company>的childList; 
   String sectionText; 
   int index; 
   
   public CompanySectionHeader（List< Company> childList，String sectionText，int index）{
   this.childList = childList; 
   this.sectionText = sectionText; 
   this.index = index; 
  } 
   
   @Override 
   public List< Company> getChildItems（）{
   return childList; 
  } 
   
   public String getSectionText（）{
   return sectionText; 
  } 
   
   @Override 
   public int compareTo（CompanySectionHeader another）{
   if（this.index> another.index）{
   return -1 ; 
  }其他{
  返回1; 
  } 
  } 
  } 
    

  以下是我的SQLite数据库结构：

    public String getFromatDate（long dateTime）{
   String formatedDate; 
   Calendar calendar = Calendar.getInstance（）; 
   calendar.setTimeInMillis（dateTime）; 
  日期mDate = calendar.getTime（）; 
   SimpleDateFormat sdf; 
   sdf = new SimpleDateFormat（dd / MM / yyyy hh：mm a，新的Locale（en））; 
   formatedDate = sdf.format（mDate）; 
   return formatedDate; 
  } 
   
   public long insertCompany（公司公司）{
   
   // String sql = null; 
   SQLiteDatabase db = dbHelper.getWritableDatabase（）; 
   
   ContentValues values = new ContentValues（）; 
   
   values.put（DatabaseHelper.KEY_COMPANY_NAME，company.getName（））; 
   values.put（DatabaseHelper.KEY_CREATED_AT，System.currentTimeMillis（））; 
   values.put（DatabaseHelper.KEY_UPDATED_AT，System.currentTimeMillis（））; 
   values.put（DatabaseHelper.KEY_COMPANY_WEBSITE，company.getWebsite（））; 
   values.put（DatabaseHelper.KEY_COMPANY_EMAIL，company.getEmail（））; 
   values.put（DatabaseHelper.KEY_COMPANY_PHONE_HOME，company.getPhoneHome（））; 
   
   long company_id = db.insert（COMPANY，null，values）; 
   
   return company_id; 
  } 
    

  我的问题是如何动态创建章节标题

  
  
  

  如果您需要任何代码或信息，可以问我：）

  
  
  

  在此先感谢：

  解决方案

  我最近在每月基础上对此进行了排序。它通过覆盖ViewType函数。

  
  
  

  < img src =https://i.stack.imgur.com/XbiVO.pngalt =屏幕截图>

  
  
  

  为此，你有在Recycler Adapter中使用类似 getViewType（）的内容。

   公共类LastTransAdapter扩展了RecyclerView.Adapter< LastTransAdapter.ViewHolder> {
   private ArrayList< LastTransBean> lastTransBeans; 
  私有上下文上下文; 
   
   private MyCustomTextView textViewTitle，tv_Desc，tv_Date，tv_Amount; 
   private LinearLayout layout1; 
   private查看customView，myView; 
   
   private LayoutParams layoutParams; 
   
   private PopupWindow popUpWindow = null; 
   
  私有RelativeLayout布局; 
   
   private int MONTHHEADER = 1; 
   private int DATAVIEW = 2; 
   
   
   public LastTransAdapter（ArrayList< LastTransBean> lastTransBeans，Context context，View myView，RelativeLayout layout）{
   this.lastTransBeans = lastTransBeans; 
   this.context = context; 
   this.myView = myView; 
   this.layout = layout; 
   
  } 
   
   @Override 
   public ViewHolder onCreateViewHolder（ViewGroup viewGroup，int i）{
   
   if（i == DATAVIEW）{ 
   
   //查看正常数据。 
   
   
  查看视图= LayoutInflater.from（viewGroup.getContext（））。inflate（R.layout.single_row_last_transactions，viewGroup，false）; 
  返回新的ViewHolder（查看）; 
  } else {
   
   //月份或日期标题的查看类型
   
  查看视图= LayoutInflater.from（viewGroup.getContext（））。inflate（R。 layout.single_row_month_header，viewGroup，false）; 
  返回新的ViewHolder（查看）; 
  } 
  } 
   
   
   @Override 
   public void onBindViewHolder（ViewHolder viewHolder，int i）{
   
   final int position = i; 
   
   if（viewHolder.getItemViewType（）== DATAVIEW）{
   
   //填充普通视图的数据
   
   
  } else { 
   //设置你的日期或月份标题
  } 
   
  } 
   
   @Override 
   public int getItemCount（）{
   return lastTransBeans.size（）; 
  } 
   
   @Override 
   public int getItemViewType（int position）{
   if（lastTransBeans.get（position）.getMonth（））{
   return MONTHHEADER; 
  }其他{
  返回DATAVIEW; 
  } 
  } 
   
  公共类ViewHolder扩展了RecyclerView.ViewHolder {
   MyCustomTextView transtile，transdate，transamont，tv_monthHeader; 
   LinearLayout acctype; 
   CardView mlastTransCardView; 
   
   
   public ViewHolder（查看itemView）{
   super（itemView）; 
   
   //投射所有文本视图，buttonsetc使用离子视图Holder。 
   
  } 
  } 
  } 
    

  你可以还使用多个视图类型。 喜欢此示例。

  
  
  

  希望这可以帮助您解决问题

  
  

  I'll use RecyclerView for a section header

  I want to create section header when i insert each Date & Time data in SQLite Database

  I followed below links for this solution but haven't been successful

  • Recyclerview Dynamic Sections not using any 3rd lib
  • Add two sections in recyclerview android

  Please refer the below image

  For above image data using below code OR Section is Static :

  List<Company> childList = new ArrayList<>();
          List<CompanySectionHeader> sectionHeaders = new ArrayList<>();
  
          childList = myDb.getAllCompany();
          sectionHeaders.add(new CompanySectionHeader(childList, "WEDNESDAY 4 APRIL", 1));
  

  Now If suppose i enter today's data then I create 1 Section Header taking today date

  Below image data section header is Static or data also:

  Above image data are getting using Below code :

  childList.add(new Company("Ketul Inc.", "11/11/2017 3:46 PM"));
          childList.add(new Company("Atmel Corporation", "09/19/2017 8:46 PM"));
          childList.add(new Company("ABC Technologies", "09/12/2017 7:41 PM"));
          childList.add(new Company("Huron Capital Partners LLC", "09/12/2017 7:25 PM"));
          sectionHeaders = new ArrayList<>();
          //Create a List of SectionHeader DataModel implements SectionHeader
          sectionHeaders.add(new CompanySectionHeader(childList, "SATURDAY 7 APRIL", 2));
  

  Below Code is my SectionHeader.Java :

  public class CompanySectionHeader implements Section<Company>, Comparable<CompanySectionHeader> {
  
      List<Company> childList;
      String sectionText;
      int index;
  
      public CompanySectionHeader(List<Company> childList, String sectionText, int index) {
          this.childList = childList;
          this.sectionText = sectionText;
          this.index = index;
      }
  
      @Override
      public List<Company> getChildItems() {
          return childList;
      }
  
      public String getSectionText() {
          return sectionText;
      }
  
      @Override
      public int compareTo(CompanySectionHeader another) {
          if (this.index > another.index) {
              return -1;
          } else {
              return 1;
          }
      }
  }
  

  Below is my SQLite Database Structure:

  public String getFromatDate(long dateTime) {
          String formatedDate;
          Calendar calendar = Calendar.getInstance();
          calendar.setTimeInMillis(dateTime);
          Date mDate = calendar.getTime();
          SimpleDateFormat sdf;
          sdf = new SimpleDateFormat("dd/MM/yyyy hh:mm a", new Locale("en"));
          formatedDate = sdf.format(mDate);
          return formatedDate;
      }
  
      public long insertCompany(Company company){
  
          //String sql = null;
          SQLiteDatabase db = dbHelper.getWritableDatabase();
  
          ContentValues values = new ContentValues();
  
          values.put(DatabaseHelper.KEY_COMPANY_NAME, company.getName());
          values.put(DatabaseHelper.KEY_CREATED_AT, System.currentTimeMillis());
          values.put(DatabaseHelper.KEY_UPDATED_AT, System.currentTimeMillis());
          values.put(DatabaseHelper.KEY_COMPANY_WEBSITE,company.getWebsite());
          values.put(DatabaseHelper.KEY_COMPANY_EMAIL,company.getEmail());
          values.put(DatabaseHelper.KEY_COMPANY_PHONE_HOME,company.getPhoneHome());
  
          long company_id = db.insert(COMPANY, null, values);
  
          return company_id;
      }
  

  My Question is How to create section header dynamically

  If u need any code or information you can ask me :)

  Thanks in Advance :

  解决方案

  I had Recently done this for sorting something on Monthly Basis. Its By overriding ViewType Function .

  For doing this you have to use something like getViewType() in Recycler Adapter.

  public class LastTransAdapter extends RecyclerView.Adapter<LastTransAdapter.ViewHolder> {
      private ArrayList<LastTransBean> lastTransBeans;
      private Context context;
  
      private MyCustomTextView textViewTitle, tv_Desc, tv_Date, tv_Amount;
      private LinearLayout layout1;
      private View customView, myView;
  
      private LayoutParams layoutParams;
  
      private PopupWindow popUpWindow = null;
  
      private RelativeLayout layout;
  
      private int MONTHHEADER = 1;
      private int DATAVIEW = 2;
  
  
      public LastTransAdapter(ArrayList<LastTransBean> lastTransBeans, Context context, View myView, RelativeLayout layout) {
          this.lastTransBeans = lastTransBeans;
          this.context = context;
          this.myView = myView;
          this.layout = layout;
  
      }
  
      @Override
      public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
  
          if (i == DATAVIEW) {
  
               // view for normal data.
  
  
              View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.single_row_last_transactions, viewGroup, false);
              return new ViewHolder(view);
          } else {
  
              // view type for month or date header
  
              View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.single_row_month_header, viewGroup, false);
              return new ViewHolder(view);
          }
      }
  
  
      @Override
      public void onBindViewHolder(ViewHolder viewHolder, int i) {
  
          final int position = i;
  
          if (viewHolder.getItemViewType() == DATAVIEW) {
  
              //fill data for normal view
  
  
          } else {
              //set your date or month header
          }
  
      }
  
      @Override
      public int getItemCount() {
          return lastTransBeans.size();
      }
  
      @Override
      public int getItemViewType(int position) {
          if (lastTransBeans.get(position).getMonth()) {
              return MONTHHEADER;
          } else {
              return DATAVIEW;
          }
      }
  
      public class ViewHolder extends RecyclerView.ViewHolder {
          MyCustomTextView transtile, transdate, transamont, tv_monthHeader;
          LinearLayout acctype;
          CardView mlastTransCardView;
  
  
          public ViewHolder(View itemView) {
              super(itemView);
  
             // cast all the textviews , buttonsetc used ion view Holder.
  
          }
      }
  }
  

  You can also use multiple viewholder types. Like this example.

  Hope this may help you to solve your problem

  这篇关于使用当前日期和时间的RecyclerView动态部分标题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！