使用当前日期和时间的RecyclerView动态部分标题

本文介绍了使用当前日期和时间的RecyclerView动态部分标题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 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。 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 headerI want to create section header when i insert each Date & Time data in SQLite DatabaseI followed below links for this solution but haven't been successfulRecyclerview Dynamic Sections not using any 3rd libAdd two sections in recyclerview androidPlease refer the below imageFor 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 dateBelow 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 dynamicallyIf 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！ 上岸，阿里云！