public interface CopyFileListener
    {
        void PublishProgress(long fileSize,long copiedSize);
    }

 textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                
            }
        });

public class MemoryWare {

    public interface CopyFileListener
    {
        void PublishProgress(long fileSize,long copiedSize);
    }
....
}

SetOnClickListener

 editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });

  @Override
    public View getView(int position, View rowView, ViewGroup parent) {

        ViewHolder viewHolder=null;
        if(rowView==null)
        {
            // 1. Create inflater
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            // 2. Get rowView from inflater
            rowView = inflater.inflate(R.layout.row_bank_group_list, parent, false);
            viewHolder=new ViewHolder();
            viewHolder.txtGroupName=(TextView) rowView.findViewById(R.id.text_groupName);
            rowView.setTag(viewHolder);
        }
        else
        {
            viewHolder=(ViewHolder)rowView.getTag();
        }
        viewHolder.txtGroupName.setText(getItem(position).getName());
        viewHolder.txtGroupName.setTypeface(new FontSystem().get_General_Font(context));
        viewHolder.txtGroupName.setTextColor(context.getResources().getColor(R.color.black));

        return rowView;
    }

File file=new File(sdcardPath,fileName);

if(file.CanWrite())
{
  .....
}

File file=new File(sdcardPath);

if(file.CanWrite())
{
file=new File(sdcardPath,filePath);
  .....
}

Environment.getExternalStorageDirectory()

/Data/Data

/Data/Data/Info.Dotnettips.MyApp

    /**
     * it will returns sd path for you
     *  <p>
     *  <b>Required Permission: </b>android.permission.READ_EXTERNAL_STORAGE<br/>
     * </p>
     * @return
     */
    public  List<String> GetExternalMounts() {
        final List<String> out = new ArrayList<>();
        String reg = "(?i).*vold.*(vfat|ntfs|exfat|fat32|ext3|ext4).*rw.*";
        String s = "";
        try {
            final Process process = new ProcessBuilder().command("mount")
                    .redirectErrorStream(true).start();
            process.waitFor();
            final InputStream is = process.getInputStream();
            final byte[] buffer = new byte[1024];
            while (is.read(buffer) != -1) {
                s = s + new String(buffer);
            }
            is.close();
        } catch (final Exception e) {
            e.printStackTrace();
        }

        // parse output
        final String[] lines = s.split("\n");
        for (String line : lines) {
            if (!line.toLowerCase(Locale.US).contains("asec")) {
                if (line.matches(reg)) {
                    String[] parts = line.split(" ");
                    for (String part : parts) {
                        if (part.startsWith("/"))
                            if (!part.toLowerCase(Locale.US).contains("vold"))
                                if(new File(part).canWrite())
                                    out.add(part);
                    }
                }
            }
        }
        return out;
    }

notesIntent.putExtra("PartyId", PartyId);
startActivity(notesIntent);

PartyId=getIntent().getLongExtra("PartyId",0);

i.putExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false);
i.putExtra(FilePickerActivity.EXTRA_ALLOW_CREATE_DIR, false);
i.putExtra(FilePickerActivity.EXTRA_MODE, FilePickerActivity.MODE_FILE);

public class MyClass {
    public static final int SOME_CONSTANT = 42;
    public int publicField;
    private static MyClass sSingleton;
    int mPackagePrivate;
    private int mPrivate;
    protected int mProtected;
}

public, protected, private,abstract, static, transient, volatile, synchronized, final, native.

Settings>Editor>Code Style>Arrangement

Settings>Editor>Completion>Case-sensitive Completion>None

Thread.CurrentThread.CurrentUICulture = new CultureInfo("fa-IR");
Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture("fa-IR");

[Required(ErrorMessageResourceName = "ResourceKeyName", ErrorMessageResourceType = typeof(<SolutionName>.Resources.<ResourceClassName>))]

public class LocalizationDisplayNameAttribute : DisplayNameAttribute
  {
    private readonly DisplayAttribute _display;
    public LocalizationDisplayNameAttribute(string resourceName, Type resourceType)
    {
      _display = new DisplayAttribute { ResourceType = resourceType, Name = resourceName };
    }
    public override string DisplayName
    {
      get
      {
        try
        {
          return _display.GetName();
        }
        catch (Exception)
        {
          return _display.Name;
        }
      }
    }
  }

public class LocalizationDisplayNameAttribute : DisplayNameAttribute
{
    private readonly PropertyInfo nameProperty;
    public LocalizationDisplayNameAttribute(string displayNameKey, Type resourceType = null)
        : base(displayNameKey)
    {
        if (resourceType != null)
            nameProperty = resourceType.GetProperty(base.DisplayName, BindingFlags.Static | BindingFlags.Public);
    }
    public override string DisplayName
    {
        get
        {
            if (nameProperty == null) base.DisplayName;
            return (string)nameProperty.GetValue(nameProperty.DeclaringType, null);
        }
    }
}

[LocalizationDisplayName("ResourceKeyName", typeof(<SolutionName>.Resources.<ResourceClassName>))]

public class BaseController : Controller
  {
    private const string LanguageCookieName = "MyLanguageCookieName";
    protected override void ExecuteCore()
    {
      var cookie = HttpContext.Request.Cookies[LanguageCookieName];
      string lang;
      if (cookie != null)
      {
        lang = cookie.Value;
      }
      else
      {
        lang = ConfigurationManager.AppSettings["DefaultCulture"] ?? "fa-IR";
        var httpCookie = new HttpCookie(LanguageCookieName, lang) { Expires = DateTime.Now.AddYears(1) };
        HttpContext.Response.SetCookie(httpCookie);
      }
      Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(lang);
      base.ExecuteCore();
    }
  }

public class LocalizationActionFilterAttribute : ActionFilterAttribute
  {
    private const string LanguageCookieName = "MyLanguageCookieName";
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
      var cookie = filterContext.HttpContext.Request.Cookies[LanguageCookieName];
      string lang;
      if (cookie != null)
      {
        lang = cookie.Value;
      }
      else
      {
        lang = ConfigurationManager.AppSettings["DefaultCulture"] ?? "fa-IR";
        var httpCookie = new HttpCookie(LanguageCookieName, lang) { Expires = DateTime.Now.AddYears(1) };
        filterContext.HttpContext.Response.SetCookie(httpCookie);
      }
      Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(lang);
      base.OnActionExecuting(filterContext);
    }
  }

<select id="langs" onchange="languageChanged()">
  <option value="fa-IR">فارسی</option>
  <option value="en-US">انگلیسی</option>
</select>
<script type="text/javascript">
  function languageChanged() {
    setCookie("MyLanguageCookieName", $('#langs').val(), 365);
    window.location.reload();
  }
  document.ready = function () {
    $('#langs').val(getCookie("MyLanguageCookieName"));
  };
  function setCookie(name, value, exdays, path) {
    var exdate = new Date();
    exdate.setDate(exdate.getDate() + exdays);
    var newValue = escape(value) + ((exdays == null) ? "" : "; expires=" + exdate.toUTCString()) + ((path == null) ? "" : "; path=" + path) ;
    document.cookie = name + "=" + newValue;
  }
  function getCookie(name) {
    var i, x, y, cookies = document.cookie.split(";");
    for (i = 0; i < cookies.length; i++) {
      x = cookies[i].substr(0, cookies[i].indexOf("="));
      y = cookies[i].substr(cookies[i].indexOf("=") + 1);
      x = x.replace(/^\s+|\s+$/g, "");
      if (x == name) {
        return unescape(y);
      }
    }
  }
</script> 

GET https://www.dntips.ir HTTP/1.1
...
Accept-Language: fa-IR,en-US;q=0.5
...

Accept-Language: fa-IR,fa;q=0.8,en-US;q=0.5,ar-BH;q=0.3

<system.web>
    <globalization enableClientBasedCulture="true" uiCulture="auto" culture="auto"></globalization>
</system.web>

var langs = filterContext.HttpContext.Request.UserLanguages;

routes.MapRoute(
    "Localization", // Route name
    "{lang}/{controller}/{action}/{id}", // URL with parameters
    new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);

public class BaseController : Controller
{
  protected override void ExecuteCore()
  {
    var lang = RouteData.Values["lang"];
    if (lang != null && !string.IsNullOrWhiteSpace(lang.ToString()))
    {
      Thread.CurrentThread.CurrentUICulture = CultureInfo.CreateSpecificCulture(lang.ToString());
    }
    base.ExecuteCore();
  }
}

public class BaseController : Controller
{
  protected override void OnActionExecuted(ActionExecutedContext context)
  {
    var view = context.Result as ViewResultBase;
    if (view == null) return; // not a view
    var viewName = view.ViewName;
    view.ViewName = GetGlobalizationViewName(viewName, context);
    base.OnActionExecuted(context);
  }
  private static string GetGlobalizationViewName(string viewName, ControllerContext context)
  {
    var cultureName = Thread.CurrentThread.CurrentUICulture.Name;
    if (cultureName == "en-US") return viewName; // default culture
    if (string.IsNullOrEmpty(viewName))
      return context.RouteData.Values["action"] + "." + cultureName; // "Index.fa"
    int i;
    if ((i = viewName.IndexOf('.')) > 0) // ex: Index.cshtml
      return viewName.Substring(0, i + 1) + cultureName + viewName.Substring(i); // "Index.fa.cshtml"
    return viewName + "." + cultureName; // "Index" ==> "Index.fa"
  }
}

public sealed class RazorGlobalizationViewEngine : RazorViewEngine
  {
    protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath)
    {
      return base.CreatePartialView(controllerContext, GetGlobalizationViewPath(controllerContext, partialPath));
    }
    protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath)
    {
      return base.CreateView(controllerContext, GetGlobalizationViewPath(controllerContext, viewPath), masterPath);
    }
    private static string GetGlobalizationViewPath(ControllerContext controllerContext, string viewPath)
    {
      //var controllerName = controllerContext.RouteData.GetRequiredString("controller");
      var request = controllerContext.HttpContext.Request;
      var lang = request.Cookies["MyLanguageCookie"];
      if (lang != null && !string.IsNullOrEmpty(lang.Value) && lang.Value != "en-US")
      {
        var localizedViewPath = Regex.Replace(viewPath, "^~/Views/", string.Format("~/Views/Globalization/{0}/", lang.Value));
        if (File.Exists(request.MapPath(localizedViewPath))) viewPath = localizedViewPath;
      }
      return viewPath;
    }

protected void Application_Start()
{
  ViewEngines.Engines.Clear();
  ViewEngines.Engines.Add(new RazorGlobalizationViewEngine());
}

 new PdfReport().DocumentPreferences(doc =>
            {
                doc.RunDirection(PdfRunDirection.RightToLeft);
                doc.Orientation(PageOrientation.Portrait);
                doc.PageSize(PdfPageSize.A4);
                doc.DocumentMetadata(new DocumentMetadata { Author = _company, Application = "نرم افزار ", Keywords = "سود فاکتورها", Subject = "سود فاکتورها", Title = "سود فاکتورها" });
            })
           .DefaultFonts(fonts =>
           {
               fonts.Path(Path.Combine(Environment.CurrentDirectory, @"fonts\irsans.ttf"),
                           Path.Combine(Environment.CurrentDirectory, @"fonts\verdana.ttf"));
               fonts.Size(8);
           })
           .PagesFooter(footer =>
           {
            footer.DefaultFooter(DateTimeHelper.ToPersianShortDateString(DateTime.Now,true,true));
           })
           .PagesHeader(header =>
           {
               header.HtmlHeader(rptHeader =>
               {
                   // Register fonts and styles
                   var styleSheet = new iTextSharp.text.html.simpleparser.StyleSheet();

                   iTextSharp.text.FontFactory.Register(Path.Combine(Environment.CurrentDirectory, @"fonts\BFARNAZ.TTF"), "Farnaz");
                   styleSheet.LoadStyle("report-header", "size", "12pt");
                   styleSheet.LoadStyle("report-header", "font-family", "Farnaz");

                   iTextSharp.text.FontFactory.Register(Path.Combine(Environment.CurrentDirectory, @"fonts\BNAZANIN.TTF"), "Bnazanin");
                   styleSheet.LoadStyle("report-desc", "size", "12pt");
                   styleSheet.LoadStyle("report-desc", "font-family", "Bnazanin");

                   rptHeader.PageHeaderProperties(new HeaderBasicProperties
                   {
                       RunDirection = PdfRunDirection.RightToLeft,
                       HorizontalAlignment = PdfRpt.Core.Contracts.HorizontalAlignment.Center,
                       ShowBorder = false,
                       PdfFont = header.PdfFont,
                       StyleSheet = styleSheet
                   });

                   rptHeader.AddPageHeader(pageHeader =>
                   {
                       var title = "سود فاکتورها";
                       var companyName = string.Concat("شرکت / فروشگاه ", _company);
                       var financialYear = string.Concat("سال مالی ", _financialPeriod.GetCurrentFinancialPeriodTitle());
                       return string.Format(@"    
                                                    <table cellpadding='0' cellspacing='0' class='report-header'>
                                                        <tr>
                                                            <td>{0}</td>
                                                        </tr>
                                                        <tr>
                                                            <td>{1}</td>
                                                        </tr> 
                                                        <tr>
                                                            <td>{2}</td>
                                                        </tr>
                                                   </table>
                                                    <table cellpadding='0' cellspacing='0' class='report-desc'> 
                                                        <tr>
                                                            <td align='left' width='10%'>{3}</td><td align='left' width='10%'>از تاریخ:</td>
                                                            <td align='left' width='65%'>{4}</td><td align='left' width='15%'>از شماره:</td> 
                                                        </tr>
                                                        <tr>
                                                           <td align='left' width='10%'>{5}</td> <td align='left' width='10%'>تا تاریخ:</td> 
                                                            <td align='left' width='65%'>{6}</td> <td align='left' width='15%'>تا شماره:</td> 
                                                        </tr>
                                                    </table>
                                             "
                                                          , title, companyName,
                                                         financialYear,
                                                         DateTimeHelper.ToPersianShortDateString(_fromDate),
                                                         _fromNumber,
                                                         DateTimeHelper.ToPersianShortDateString(_toDate),
                                                         _toNumber
                                                         );
                   });
               });
           })
           .MainTableTemplate(template =>
           {
               template.CustomTemplate(new GrayTemplate());
           })
           .MainTablePreferences(table =>
           {
               table.ColumnsWidthsType(TableColumnWidthType.Relative);
               table.NumberOfDataRowsPerPage(0);
           })
           .MainTableDataSource(dataSource =>
           {
               var factorsProfitItems = FactorsProfitItems.Select(g => new
               {
                   Number = g.Number,
                   SaleDate = g.SaleDate,
                   Customer = g.Customer,
                   Description = g.Description,
                   FactorProfit = g.FactorProfit,
                   Discount = g.Discount,
                   RealProfit = g.RealProfit
               });
               dataSource.StronglyTypedList(factorsProfitItems);
           })
           .MainTableColumns(columns =>
           {
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.Number);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Center);
                   column.IsVisible(true);
                   column.Order(0);
                   column.Width(1);
                   column.HeaderCell("ش فاکتور");
               });
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.SaleDate);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Left);
                   column.IsVisible(true);
                   column.Order(1);
                   column.Width(1);
                   column.ColumnItemsTemplate(template =>
                   {
                       template.TextBlock();
                       template.DisplayFormatFormula(obj => DateTimeHelper.ToPersianShortDateString((DateTime)obj));
                   });
                   column.HeaderCell("تاریخ");
               });
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.Customer);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Left);
                   column.IsVisible(true);
                   column.Order(2);
                   column.Width(1.5f);
                   column.HeaderCell("مشتری");
               });
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.Description);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Center);
                   column.IsVisible(true);
                   column.Order(3);
                   column.Width(2);
                   column.HeaderCell("شرح");
               });
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.FactorProfit);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Right);
                   column.IsVisible(true);
                   column.Order(4);
                   column.Width(1);
                   column.ColumnItemsTemplate(template =>
                   {
                       template.TextBlock();
                       template.DisplayFormatFormula(obj => string.Format("{0:n0}", obj));
                   });
                   column.AggregateFunction(aggregateFunction =>
                   {
                       aggregateFunction.NumericAggregateFunction(AggregateFunction.Sum);
                       aggregateFunction.DisplayFormatFormula(obj => obj == null ? string.Empty : string.Format("{0:n0}", obj));
                   });
                   column.HeaderCell("سود فاکتور");
               });
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.Discount);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Right);
                   column.IsVisible(true);
                   column.Order(5);
                   column.Width(1);
                   column.ColumnItemsTemplate(template =>
                   {
                       template.TextBlock();
                       template.DisplayFormatFormula(obj => string.Format("{0:n0}", obj));
                   });
                   column.AggregateFunction(aggregateFunction =>
                   {
                       aggregateFunction.NumericAggregateFunction(AggregateFunction.Sum);
                       aggregateFunction.DisplayFormatFormula(obj => obj == null ? string.Empty : string.Format("{0:n0}", obj));
                   });
                   column.HeaderCell("تخفیف");
               });
               columns.AddColumn(column =>
               {
                   column.PropertyName<FactorsProfitItemPrintViewModel>(x => x.RealProfit);
                   column.CellsHorizontalAlignment(PdfRpt.Core.Contracts.HorizontalAlignment.Right);
                   column.IsVisible(true);
                   column.Order(6);
                   column.Width(1);
                   column.ColumnItemsTemplate(template =>
                   {
                       template.TextBlock();
                       template.DisplayFormatFormula(obj => string.Format("{0:n0}", obj));
                   });
                   column.AggregateFunction(aggregateFunction =>
                   {
                       aggregateFunction.NumericAggregateFunction(AggregateFunction.Sum);
                       aggregateFunction.DisplayFormatFormula(obj => obj == null ? string.Empty : string.Format("{0:n0}", obj));
                   });
                   column.HeaderCell("سود خالص");
               });
           })
            .MainTableSummarySettings(summarySettings =>
            {
                summarySettings.OverallSummarySettings("جمع کل");
                summarySettings.PreviousPageSummarySettings("نقل از صفحه قبل");
                summarySettings.PageSummarySettings("جمع کل صفحه");
            })
           .MainTableEvents(events =>
           {
               events.DataSourceIsEmpty(message: "داده ای جهت نمایش وجود ندارد.");
               events.CellCreated(args =>
               {
                   args.Cell.BasicProperties.CellPadding = 4f;
               });
               events.MainTableAdded(args =>
               {
                   var taxTable = new PdfGrid(3);  // Create a clone of the MainTable's structure  
                   taxTable.RunDirection = 3;
                   taxTable.SetWidths(new float[] { 3, 3, 3 });
                   taxTable.WidthPercentage = 100f;
                   taxTable.SpacingBefore = 60f;

                   taxTable.AddSimpleRow(
                       (data, cellProperties) =>
                       {
                           data.Value = "امضاء تنظیم کننده";
                           cellProperties.ShowBorder = false;
                           cellProperties.PdfFont = args.PdfFont;
                       },
                       (data, cellProperties) =>
                       {
                           data.Value = "امضاء حسابدار";
                           cellProperties.ShowBorder = false;
                           cellProperties.PdfFont = args.PdfFont;
                       },
                       (data, cellProperties) =>
                       {
                           data.Value = "امضاء مدیرعامل";
                           cellProperties.ShowBorder = false;
                           cellProperties.PdfFont = args.PdfFont;
                       });
                   args.PdfDoc.Add(taxTable);
               });
           })
           .Export(export =>
           {
               export.ToExcel("خروجی اکسل");
               export.ToCsv("خروجی CSV");
               export.ToXml("خروجی XML");
           })
           .Generate(data => data.AsPdfFile(_documentSource));