How to dynamically draw a TableLayout from AsyncTask - tablelayout

My question is as the title states, I dynamically draw a table when I press a button and it works. But due to the fact that I need to show a process dialog while the table is being drawn I have tried using AsyncTask and it keeps crashing in the doInBackground() function.
Can anyone perhaps tell me what I am doing wrong?
private class TransactionsTask extends AsyncTask<Long, Void, Void>
{
final TextView[] tx = new TextView[10];
final TableRow[] tr = new TableRow[10];
final TableLayout tl = (TableLayout)findViewById(R.id.maintable);
final ProgressDialog dialog = ProgressDialog.show(TransactionsActivity.this, "", "Retrieving...", true);
protected void onPreExecute()
{
this.dialog.show();
}
protected Void doInBackground(Long... params)
{
// A request for all transactions on the specified data is made to the S-Qube here
com.example.sqube.SettingsActivity.out.println(c + "0130;EmployeeId=4;LastTXId=0;FirstTXId=0;SYear=11;SMon=" + (mStartMonth + 1) + ";SDay=" + mStartDay + ";EYear=11;EMon=" + (mEndMonth + 1) + ";EDay=" + mEndDay + ";Area=0;View=1;TXType=1;" + d);
com.example.sqube.SettingsActivity.out.flush();
while(control == false)
{
try
{
Thread.sleep(10);
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
tl.removeAllViews(); // The view is first cleared before drawn again
// This code it used to dynamically draw the transactions table based on the number of transactions received from the S-Qube
tr[0] = new TableRow(TransactionsActivity.this);
tr[1] = new TableRow(TransactionsActivity.this);
tr[2] = new TableRow(TransactionsActivity.this);
tr[3] = new TableRow(TransactionsActivity.this);
tx[0] = new TextView(TransactionsActivity.this);
tx[1] = new TextView(TransactionsActivity.this);
tx[2] = new TextView(TransactionsActivity.this);
tx[3] = new TextView(TransactionsActivity.this);
tx[0].setText("Date ");
tx[0].setTextColor(Color.BLACK);
tx[0].setTypeface(null, 1);
tr[0].addView(tx[0]);
tx[1].setText("Device ");
tx[1].setTextColor(Color.BLACK);
tx[1].setTypeface(null, 1);
tr[0].addView(tx[1]);
tx[2].setText("Access Type ");
tx[2].setTextColor(Color.BLACK);
tx[2].setTypeface(null, 1);
tr[0].addView(tx[2]);
tx[3].setText("Areas ");
tx[3].setTextColor(Color.BLACK);
tx[3].setTypeface(null, 1);
tr[0].addView(tx[3]);
tl.addView(tr[0], new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
tl.addView(tr[1], new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
tl.addView(tr[2], new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
tl.addView(tr[3], new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
for(i = 0; i < com.example.sqube.SettingsActivity.Count1; i++)
{
tr[i] = new TableRow(TransactionsActivity.this);
tx[0] = new TextView(TransactionsActivity.this);
tx[1] = new TextView(TransactionsActivity.this);
tx[2] = new TextView(TransactionsActivity.this);
tx[3] = new TextView(TransactionsActivity.this);
tx[0].setText(Date[i] + " ");
tx[0].setTextColor(Color.BLACK);
tx[0].setTypeface(null, 1);
tx[1].setText(Device[i] + " ");
tx[1].setTextColor(Color.BLACK);
tx[1].setTypeface(null, 1);
tx[2].setText(Access_Type[i] + " ");
tx[2].setTextColor(Color.BLACK);
tx[2].setTypeface(null, 1);
tx[3].setText(Area[i] + " ");
tx[3].setTextColor(Color.BLACK);
tx[3].setTypeface(null, 1);
tr[i].addView(tx[0]);
tr[i].addView(tx[1]);
tr[i].addView(tx[2]);
tr[i].addView(tx[3]);
tl.addView(tr[i], new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
}
com.example.sqube.SettingsActivity.Count1 = 0;
control = false;
return null;
}
protected void onPostExecute(final Void unused)
{
dialog.dismiss();
}
}

Related

C# Web Form: GridView disappears while MessageBox is showing

I have 3 GridViews, each inside a separate tab. Every row in the GridView is associated with a LinkButton, and when it's clicked a MessageBox are popping up, showing the content on that particular row.
The problem is that when the MessageBox pops up the GridView disappears, and when MessageBox is closed GridView then comes back.
This problem doesn't occur if GridView is used without any tabs and is placed outside the TabControl. Here is my code:
protected void Page_Load(object sender, EventArgs e)
{
TabControl TheTabCtrl = new TabControl("InfoTabCtrl");
for (var i = 0; i < 3; i++)
{
GridView newGridView = new GridView();
//generate dynamic id
newGridView.ID = String.Concat("GridView", i);
newGridView.AutoGenerateColumns = false;
newGridView.RowDataBound += new GridViewRowEventHandler(OnRowDataBound);
//if (!this.IsPostBack)
//{
BoundField bfield = new BoundField();
bfield.HeaderText = "Id";
bfield.DataField = "Id";
newGridView.Columns.Add(bfield);
bfield = new BoundField();
bfield.HeaderText = "Name";
bfield.DataField = "Name";
newGridView.Columns.Add(bfield);
TemplateField tfield = new TemplateField();
tfield.HeaderText = "Country";
newGridView.Columns.Add(tfield);
tfield = new TemplateField();
tfield.HeaderText = "View";
newGridView.Columns.Add(tfield);
//}
this.BindGrid(newGridView, i);
string myString = i.ToString();
TabPage BasicPage1 = new TabPage(myString, myString);
BasicPage1.Controls.Add(newGridView);
TheTabCtrl.Tabs.Add(BasicPage1);
}
if (!this.IsPostBack)
{
string value = Request.Form[TheTabCtrl.Id + "_SelectedTab"];
if (!string.IsNullOrEmpty(value))
{
try
{
TheTabCtrl.SelectedTab = TheTabCtrl.Tabs.IndexOf(TheTabCtrl.Tabs.Where(x => x.Id == value).First());
}
catch
{
}
}
}
form1.Controls.Add(TheTabCtrl.GetControl);
}
private void BindGrid(GridView newGridView, int id)
{
string[][,] jaggedArray = new string[3][,]
{
new string[,] { {"John Hammond", "United States"}, {"Mudassar Khan", "India"}, {"Suzanne Mathews", "France"}, {"Robert Schidner", "Russia"} },
new string[,] { {"Zoey Melwick", "New Zeeland"}, {"Bryan Robertson", "England"}, {"Beth Stewart", "Australia"}, {"Amanda Rodrigues", "Portugal"} },
new string[,] { {"Glenda Becker", "Germany"}, {"Despoina Athanasiadis", "Greece"}, {"Alexandra López", "Spain"}, {"David Bouchard", "Canada"} }
};
for (int row = 0; row < jaggedArray.Length; row++)
{
if (id != row) continue;
DataTable dt = new DataTable();
// Share the same headlines
dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
new DataColumn("Name", typeof(string)),
new DataColumn("Country",typeof(string)) });
for (int pair = 0; pair < jaggedArray[row].Length / 2; pair++)
{
dt.Rows.Add(pair + 1, jaggedArray[row][pair, 0], jaggedArray[row][pair, 1]);
}
string myPage = string.Concat(row, "page");
string myString = row.ToString();
newGridView.DataSource = dt;
newGridView.DataBind();
}//End for Row
}//BindGrid
protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox txtCountry = new TextBox();
txtCountry.ID = "txtCountry";
txtCountry.Text = (e.Row.DataItem as DataRowView).Row["Country"].ToString();
e.Row.Cells[1].Width = 200;
e.Row.Cells[2].Controls.Add(txtCountry);
LinkButton lnkView = new LinkButton();
lnkView.ID = "lnkView";
lnkView.Text = "View";
lnkView.Click += ViewDetails;
lnkView.CommandArgument = (e.Row.DataItem as DataRowView).Row["Id"].ToString();
e.Row.Cells[3].Controls.Add(lnkView);
}
}
protected void ViewDetails(object sender, EventArgs e)
{
LinkButton lnkView = (sender as LinkButton);
GridViewRow row = (lnkView.NamingContainer as GridViewRow);
string id = lnkView.CommandArgument;
string name = row.Cells[1].Text;
string country = (row.FindControl("txtCountry") as TextBox).Text;
ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Id: " + id + " Name: " + name + " Country: " + country + "')", true);
}
So how can I show a MessageBox without GridView disappearing?

Copying fields in iTextSharp 5.4.5.0

I was under the impression that it is now possible to copy AcroFields using PdfCopy. In the release notes for iText 5.4.4.0 this is listed as possible now. However, when I try to do so it appears all the annotations (I think I am using that term correctly, still fairly new to iText...) for the fields are stripped out. It looks like the fields are there (meaning I can see the blue boxes that indicate an editable field), but they are not editable. If I try to bring the PDF up in Acrobat I get a message saying that "there are no fields, would you like Acrobat to discover them?" and most are found and marked and fields properly (check boxes aren't, but the text fields are).
I assume there is an additional step somewhere along the lines to re-add the annotations to the PdfCopy object, but I do not see a way to get the annotations from the PdfReader. I also cannot seem to find any documentation on how to do this (since AcroFields were for so long not supported in PdfCopy most of what I find is along that vein).
Due to sensitivity I cannot provide a copy of the PDF's in question, but using an altered version of a test program used earlier you can see the issue with the following code. It should generate a table with some check boxes in the four right columns. If I use the exact same code with PdfCopyFields in the MergePdfs method instead of PdfCopy it works as expected. This code does not produce any text fields, but in my main project they are part of the original parent PDF that is used as a template.
(Sorry for the long example, it has been cherry picked from a much larger application. You will need a PDF with a field named "TableStartPosition" somewhere in it and update RunTest with the correct paths for your local machine to get this to work.)
Has the PdfCopy functionality not made it into iTextSharp yet? I am using version 5.4.5.0.
class Program
{
Stream _pdfTemplateStream;
MemoryStream _pdfResultStream;
PdfReader _pdfTemplateReader;
PdfStamper _pdfResultStamper;
static void Main(string[] args)
{
Program p = new Program();
try
{
p.RunTest();
}
catch (Exception f)
{
Console.WriteLine(f.Message);
Console.ReadLine();
}
}
internal void RunTest()
{
FileStream fs = File.OpenRead(#"C:\temp\a\RenameFieldTest\RenameFieldTest\Library\CoverPage.pdf");
_pdfTemplateStream = fs;
_pdfResultStream = new MemoryStream();
//PDFTemplateStream = new FileStream(_templatePath, FileMode.Open);
_pdfTemplateReader = new PdfReader(_pdfTemplateStream);
_pdfResultStamper = new PdfStamper(_pdfTemplateReader, _pdfResultStream);
#region setup objects
List<CustomCategory> Categories = new List<CustomCategory>();
CustomCategory c1 = new CustomCategory();
c1.CategorySizesInUse.Add(CustomCategory.AvailableSizes[1]);
c1.CategorySizesInUse.Add(CustomCategory.AvailableSizes[2]);
Categories.Add(c1);
CustomCategory c2 = new CustomCategory();
c2.CategorySizesInUse.Add(CustomCategory.AvailableSizes[0]);
c2.CategorySizesInUse.Add(CustomCategory.AvailableSizes[1]);
Categories.Add(c2);
List<CustomObject> Items = new List<CustomObject>();
CustomObject co1 = new CustomObject();
co1.Category = c1;
co1.Title = "Object 1";
Items.Add(co1);
CustomObject co2 = new CustomObject();
co2.Category = c2;
co2.Title = "Object 2";
Items.Add(co2);
#endregion
FillCoverPage(Items);
_pdfResultStamper.Close();
_pdfTemplateReader.Close();
List<MemoryStream> pdfStreams = new List<MemoryStream>();
pdfStreams.Add(new MemoryStream(_pdfResultStream.ToArray()));
MergePdfs(#"C:\temp\a\RenameFieldTest\RenameFieldTest\Library\Outfile.pdf", pdfStreams);
_pdfResultStream.Dispose();
_pdfTemplateStream.Dispose();
}
internal void FillCoverPage(List<CustomObject> Items)
{
//Before we start we need to figure out where to start adding the table
var fieldPositions = _pdfResultStamper.AcroFields.GetFieldPositions("TableStartPosition");
if (fieldPositions == null)
{ throw new Exception("Could not find the TableStartPosition field. Unable to determine point of origin for the table!"); }
_pdfResultStamper.AcroFields.RemoveField("TableStartPosition");
var fieldPosition = fieldPositions[0];
// Get the position of the field
var targetPosition = fieldPosition.position;
//First, get all the available card sizes
List<string> availableSizes = CustomCategory.AvailableSizes;
//Generate a table with the number of available card sizes + 1 for the device name
PdfPTable table = new PdfPTable(availableSizes.Count + 1);
float[] columnWidth = new float[availableSizes.Count + 1];
for (int y = 0; y < columnWidth.Length; y++)
{
if (y == 0)
{ columnWidth[y] = 320; }
else
{ columnWidth[y] = 120; }
}
table.SetTotalWidth(columnWidth);
table.WidthPercentage = 100;
PdfContentByte canvas;
List<PdfFormField> checkboxes = new List<PdfFormField>();
//Build the header row
table.Rows.Add(new PdfPRow(this.GetTableHeaderRow(availableSizes)));
//Insert the global check boxes
PdfPCell[] globalRow = new PdfPCell[availableSizes.Count + 1];
Phrase tPhrase = new Phrase("Select/Unselect All");
PdfPCell tCell = new PdfPCell();
tCell.BackgroundColor = BaseColor.LIGHT_GRAY;
tCell.AddElement(tPhrase);
globalRow[0] = tCell;
for (int x = 0; x < availableSizes.Count; x++)
{
tCell = new PdfPCell();
tCell.BackgroundColor = BaseColor.LIGHT_GRAY;
PdfFormField f = PdfFormField.CreateCheckBox(_pdfResultStamper.Writer);
string fieldName = string.Format("InkSaver.Global.chk{0}", availableSizes[x].Replace(".", ""));
//f.FieldName = fieldName;
string js = string.Format("hideAll(event.target, '{0}');", availableSizes[x].Replace(".", ""));
f.Action = PdfAction.JavaScript(js, _pdfResultStamper.Writer);
tCell.CellEvent = new ChildFieldEvent(_pdfResultStamper.Writer, f, fieldName);
globalRow[x + 1] = tCell;
checkboxes.Add(f);
}
table.Rows.Add(new PdfPRow(globalRow));
int status = 0;
int pageNum = 1;
for (int itemIndex = 0; itemIndex < Items.Count; itemIndex++)
{
tCell = new PdfPCell();
Phrase p = new Phrase(Items[itemIndex].Title);
tCell.AddElement(p);
tCell.HorizontalAlignment = Element.ALIGN_LEFT;
PdfPCell[] cells = new PdfPCell[availableSizes.Count + 1];
cells[0] = tCell;
for (int availCardSizeIndex = 0; availCardSizeIndex < availableSizes.Count; availCardSizeIndex++)
{
if (Items[itemIndex].Category.CategorySizesInUse.Contains(availableSizes[availCardSizeIndex]))
{
string str = availableSizes[availCardSizeIndex];
tCell = new PdfPCell();
tCell.PaddingLeft = 10f;
tCell.PaddingRight = 10f;
cells[availCardSizeIndex + 1] = tCell;
cells[availCardSizeIndex].HorizontalAlignment = Element.ALIGN_CENTER;
PdfFormField f = PdfFormField.CreateCheckBox(_pdfResultStamper.Writer);
string fieldName = string.Format("InkSaver.chk{0}.{1}", availableSizes[availCardSizeIndex].Replace(".", ""), itemIndex + 1);
//f.FieldName = fieldName; <-- This causes the checkbox to be double-named (i.e. InkSaver.Global.chk0.InkSaver.Global.chk0
string js = string.Format("hideCardSize(event.target, {0}, '{1}');", itemIndex + 1, availableSizes[availCardSizeIndex]);
f.Action = PdfAction.JavaScript(js, _pdfResultStamper.Writer);
tCell.CellEvent = new ChildFieldEvent(_pdfResultStamper.Writer, f, fieldName);
checkboxes.Add(f);
}
else
{
//Add a blank cell
tCell = new PdfPCell();
cells[availCardSizeIndex + 1] = tCell;
}
}
//Test if the column text will fit
table.Rows.Add(new PdfPRow(cells));
canvas = _pdfResultStamper.GetUnderContent(pageNum);
ColumnText ct2 = new ColumnText(canvas);
ct2.AddElement(new PdfPTable(table));
ct2.Alignment = Element.ALIGN_LEFT;
ct2.SetSimpleColumn(targetPosition.Left, 0, targetPosition.Right, targetPosition.Top, 0, 0);
status = ct2.Go(true);
if ((status != ColumnText.NO_MORE_TEXT) || (itemIndex == (Items.Count - 1)))
{
ColumnText ct3 = new ColumnText(canvas);
ct3.AddElement(table);
ct3.Alignment = Element.ALIGN_LEFT;
ct3.SetSimpleColumn(targetPosition.Left, 0, targetPosition.Right, targetPosition.Top, 0, 0);
ct3.Go();
foreach (PdfFormField f in checkboxes)
{
_pdfResultStamper.AddAnnotation(f, pageNum);
}
checkboxes.Clear();
if (itemIndex < (Items.Count - 1))
{
pageNum++;
_pdfResultStamper.InsertPage(pageNum, _pdfTemplateReader.GetPageSize(1));
table = new PdfPTable(availableSizes.Count + 1);
table.SetTotalWidth(columnWidth);
table.WidthPercentage = 100;
table.Rows.Add(new PdfPRow(this.GetTableHeaderRow(availableSizes)));
}
}
}
}
private PdfPCell[] GetTableHeaderRow(List<string> AvailableSizes)
{
PdfPCell[] sizeHeaders = new PdfPCell[AvailableSizes.Count + 1];
Phrase devName = new Phrase("Device Name");
PdfPCell deviceHeader = new PdfPCell(devName);
deviceHeader.HorizontalAlignment = Element.ALIGN_CENTER;
deviceHeader.BackgroundColor = BaseColor.GRAY;
sizeHeaders[0] = deviceHeader;
for (int x = 0; x < AvailableSizes.Count; x++)
{
PdfPCell hCell = new PdfPCell(new Phrase(AvailableSizes[x]));
hCell.HorizontalAlignment = Element.ALIGN_CENTER;
hCell.BackgroundColor = BaseColor.GRAY;
sizeHeaders[x + 1] = hCell;
}
return sizeHeaders;
}
public void MergePdfs(string filePath, List<MemoryStream> pdfStreams)
{
//Create output stream
FileStream outStream = new FileStream(filePath, FileMode.Create);
Document document = null;
if (pdfStreams.Count > 0)
{
try
{
int PageCounter = 0;
//Create Main reader
PdfReader reader = new PdfReader(pdfStreams[0]);
PageCounter = reader.NumberOfPages;//This is if we have multiple pages in the cover page, we need to adjust the offset.
//rename fields in the PDF. This is required because PDF's cannot have more than one field with the same name
RenameFields(reader, PageCounter++);
//Create Main Doc
document = new Document(reader.GetPageSizeWithRotation(1));
//Create main writer
PdfCopy Writer = new PdfCopy(document, outStream);
//PdfCopyFields Writer = new PdfCopyFields(outStream);
//Open document for writing
document.Open();
////Add pages
Writer.AddDocument(reader);
//For each additional pdf after first combine them into main document
foreach (var PdfStream in pdfStreams.Skip(1))
{
PdfReader reader2 = new PdfReader(PdfStream);
//rename PDF fields
RenameFields(reader2, PageCounter++);
// Add content
Writer.AddDocument(reader);
}
//Writer.AddJavaScript(PostProcessing.GetSuperscriptJavaScript());
Writer.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
if (document != null)
document.Close();
foreach (var Strm in pdfStreams)
{
try { if (null != Strm) Strm.Dispose(); }
catch { }
}
//pdfStamper.Close();
outStream.Close();
}
}
}
private void RenameFields(PdfReader reader, int PageNum)
{
int tempPageNum = 1;
//rename all fields
foreach (string field in reader.AcroFields.Fields.Keys)
{
if (((reader.AcroFields.GetFieldType(field) == 1) || (reader.AcroFields.GetFieldType(field) == 2)) && (field.StartsWith("InkSaver")))
{
//This is a InkSaver button, set the name so its subclassed
string classPath;
if (reader.AcroFields.GetFieldType(field) == 2)
{
classPath = field.Substring(0, field.LastIndexOf("."));
if (field.StartsWith("InkSaver.chk"))
{
int a = field.LastIndexOf(".");
string sub = field.Substring(a + 1, (field.Length - a - 1));
int pageNum = int.Parse(sub);
int realPageNum = pageNum + tempPageNum;//PostProcessing.Instance.CoverPageLength;
PageNum = realPageNum;
}
}
else
{
classPath = field.Substring(0, field.LastIndexOf("."));
}
string newID = classPath + ".page" + PageNum.ToString();
bool ret = reader.AcroFields.RenameField(field, newID);
}
else
{
reader.AcroFields.RenameField(field, field + "_" + PageNum.ToString());// field + Guid.NewGuid().ToString("N"));
}
}
}
}
public class ChildFieldEvent : IPdfPCellEvent
{
protected PdfWriter writer;
protected PdfFormField parent;
protected string checkBoxName;
internal ChildFieldEvent(PdfWriter writer, PdfFormField parent, string CheckBoxName)
{
this.writer = writer;
this.parent = parent;
this.checkBoxName = CheckBoxName;
}
public void CellLayout(PdfPCell cell, Rectangle rect, PdfContentByte[] cb)
{
createCheckboxField(rect);
}
private void createCheckboxField(Rectangle rect)
{
RadioCheckField bt = new RadioCheckField(this.writer, rect, this.checkBoxName, "Yes");
bt.CheckType = RadioCheckField.TYPE_SQUARE;
bt.Checked = true;
this.parent.AddKid(bt.CheckField);
}
}
internal class CustomCategory
{
internal static List<string> AvailableSizes
{
get
{
List<string> retVal = new List<string>();
retVal.Add("1");
retVal.Add("2");
retVal.Add("3");
retVal.Add("4");
return retVal;
}
}
internal CustomCategory()
{
CategorySizesInUse = new List<string>();
}
internal List<string> CategorySizesInUse { get; set; }
}
internal class CustomObject
{
internal string Title { get; set; }
internal CustomCategory Category { get;set; }
}
Please take a look at the MergeForms example. Your example is too long for me to read, but at first sight, I'm missing the following line:
copy.setMergeFields();
By the way, in MergeForms2, the fields are also renamed before the form is merged.

iText rotation creates pdf which displays out of memory exception

Following is a code snippet creating a pdf file where pages could be rotated in the resulting file. This works fine for most pdf files. But one particualr pdf file of version 1.6 the page is already rotated by 180, on applying further rotation to it e.g. 90 degress and saving the file causes it to get corrupted. Infact even if you don't rotate the file and simply write it out to another file using iText the file the resulting pdf is corrupted and displays an out of memory exception when opened in Adobe reader.
Why would that happen? Am I missing some sort of compression in the file.
private String createPdfFileWithoutForms(final EditStateData[] editStateData, final String directory)
throws EditingException {
Long startTime = System.currentTimeMillis();
File pdfFileToReturn = new File(directory + File.separator + UidGenerator.generate() + ".pdf");
com.lowagie.text.Document document = null;
FileOutputStream outputStream = null;
PdfCopy pdfCopy = null;
PdfReader reader = null;
PdfDictionary pageDict = null;
int rotationAngle = 0;
Map<Integer, Integer> rotationQuadrants = null;
try {
document = new com.lowagie.text.Document();
outputStream = new FileOutputStream(pdfFileToReturn);
pdfCopy = new PdfCopy(document, outputStream);
pdfCopy.setFullCompression();
pdfCopy.setCompressionLevel(9);
document.open();
for (EditStateData state : editStateData) {
try {
reader = new PdfReader(state.getFileName());
reader.selectPages(state.getPages());
rotationQuadrants = state.getRotationQuadrants();
for (int i = 1; i <= reader.getNumberOfPages(); i++) {
// Rotation quadrant key is the source page number
if (rotationQuadrants.containsKey(state.getPages().get(i - 1))) {
rotationAngle = reader.getPageRotation(i);
pageDict = reader.getPageN(i);
pageDict.put(PdfName.ROTATE,
new PdfNumber((rotationAngle
+ rotationQuadrants.get(state.getPages().get(i - 1))) % 360));
}
document.setPageSize(reader.getPageSizeWithRotation(i));
document.newPage();
// import the page from source pdf
PdfImportedPage page = pdfCopy.getImportedPage(reader, i);
// add the page to the destination pdf
pdfCopy.addPage(page);
}
} catch (final IOException e) {
LOGGER.error(e.getMessage(), e);
throw new EditingException(e.getMessage(), e);
} finally {
if (reader != null) {
reader.close();
}
}
}
} catch (final Exception e) {
LOGGER.error(e.getMessage(), e);
throw new EditingException(e.getMessage(), e);
} finally {
if (document != null) {
document.close();
}
if (pdfCopy != null) {
pdfCopy.close();
}
IoUtils.closeQuietly(outputStream);
}
LOGGER.debug("Combining " + editStateData.length + " pdf files took "
+ ((System.currentTimeMillis() - startTime) / 1000) + " msecs");
return pdfFileToReturn.getAbsolutePath();
}

My custome list view not update with new data

Hello I created a custom list view and for update used notifyDataSetChanged() method but my list not updated. please help me.
this is my source code
public class fourthPage extends ListActivity {
ListingFeedParser ls;
List<Listings> data;
EditText SearchText;
Button Search;
private LayoutInflater mInflater;
private ProgressDialog progDialog;
private int pageCount = 0;
String URL;
ListViewListingsAdapter adapter;
Message msg;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Bundle b = getIntent().getExtras();
URL = b.getString("URL");
Log.i("Ran->URL", "->" + URL);
MYCITY_STATIC_DATA.fourthPage_main_URL = URL;
final ListingFeedParser lf = new ListingFeedParser(URL);
Search = (Button) findViewById(R.id.searchButton);
SearchText = (EditText) findViewById(R.id.search);
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(SearchText.getWindowToken(), 0);
this.getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
try {
progDialog = ProgressDialog.show(this, "",
"Loading please wait....", true);
progDialog.setCancelable(true);
new Thread(new Runnable() {
#Override
public void run() {
try {
data = lf.parse();
} catch (Exception e) {
e.printStackTrace();
}
msg = new Message();
msg.what = 1;
fourthPage.this._handle.sendMessage(msg);
}
}).start();
Search.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
SearchText = (EditText) findViewById(R.id.search);
if (SearchText.getText().toString().equals(""))
return;
CurrentLocationTimer myLocation = new CurrentLocationTimer();
LocationResult locationResult = new LocationResult() {
#Override
public void gotLocation(final Location location) {
Toast.makeText(
getApplicationContext(),
location.getLatitude() + " "
+ location.getLongitude(),
Toast.LENGTH_LONG).show();
String URL = "http://75.125.237.76/phone_feed_2_point_0_test.php?"
+ "lat="
+ location.getLatitude()
+ "&lng="
+ location.getLongitude()
+ "&page=0&search="
+ SearchText.getText().toString();
Log.e("fourthPage.java Search URL :->", "" + URL);
Bundle b = new Bundle();
b.putString("URL", URL);
Intent it = new Intent(getApplicationContext(),
fourthPage.class);
it.putExtras(b);
startActivity(it);
}
};
myLocation.getLocation(getApplicationContext(),
locationResult);
}
});
} catch (Exception e) {
Toast.makeText(getApplicationContext(),
"No data available for this request", Toast.LENGTH_LONG)
.show();
}
}
private Handler _handle = new Handler() {
#Override
public void handleMessage(Message msg) {
progDialog.dismiss();
if (msg.what == 1) {
if (data.size() == 0 || data == null) {
Toast.makeText(getApplicationContext(),
"No data available for this request",
Toast.LENGTH_LONG).show();
}
mInflater = (LayoutInflater) getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
adapter = new ListViewListingsAdapter(getApplicationContext(),
R.layout.list1, R.id.title, data, mInflater);
setListAdapter(adapter);
getListView().setTextFilterEnabled(true);
adapter.notifyDataSetChanged();
} else {
Toast.makeText(getApplicationContext(),
"Error in retrieving the method", Toast.LENGTH_SHORT)
.show();
}
}
};
public void onListItemClick(ListView parent, View v, int position, long id) {
// remember i m going from bookmark list
MYCITY_STATIC_DATA.come_from_bookmark = false;
Log.i("4thPage.java - MYCITY_STATIC_DATA.come_from_bookmark",
"set false - > check" + MYCITY_STATIC_DATA.come_from_bookmark);
Listings sc = (Listings) this.getListAdapter().getItem(position);
if (sc.getName().equalsIgnoreCase("SEE MORE...")) {
pageCount = pageCount + 1;
final ListingFeedParser lf = new ListingFeedParser((URL.substring(
0, URL.length() - 1)) + pageCount);
try {
progDialog = ProgressDialog.show(this, "",
"Loading please wait....", true);
progDialog.setCancelable(true);
new Thread(new Runnable() {
#Override
public void run() {
data.remove(data.size() - 1);
data.addAll(lf.parse());
Message msg = new Message();
msg.what = 1;
fourthPage.this._handle.sendMessage(msg);
}
}).start();
} catch (Exception e) {
pageCount = pageCount - 1;
// TODO: handle exception
Toast newToast = Toast.makeText(this, "Error in getting Data",
Toast.LENGTH_SHORT);
}
} else {
Bundle b = new Bundle();
b.putParcelable("listing", sc);
Intent it = new Intent(getApplicationContext(),
FifthPageTabbed.class);
it.putExtras(b);
startActivity(it);
}
}
#Override
public void onBackPressed() {
setResult(0);
finish();
}
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Log.e("RESUME:-)", "4th Page onResume");
try {
//adapter.notifyDataSetChanged();
//setListAdapter(adapter);
//getListView().setTextFilterEnabled(true);
} catch (Exception e) {
Log.e("EXCEPTION in 4th page",
"in onResume msg:->" + e.getMessage());
}
}
}
Do not re-create the object of ArrayList or Array you are passing to adapter, just modify same ArrayList or Array again. and also when array or arrylist size not changed after you modify adapter then in that case notifydatasetchange will not work.
In shot it is work only when array or arraylist size increases or decreases.
What version of Android are you targeting? The latest version seems to have revised how notifyDataSetChanged() works. If you target sdk 11 it might work?
Also, there seems to be a different (and very thorough answer) to this question in another post:
notifyDataSetChanged example

Android reading text fie from sdcsrd and store it in ArrayList

I need help on this one, I am trying to read a text file stored in sdcard and store the result in an ArrayList for subsequent usage, but the code is crashing.
public class Mytextreader extends Activity {
final ArrayList> dataList = new ArrayList>();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
loadData();
String text = "";
for (int i = 0; i < dataList.size(); i++) {
text = text + dataList.get(i).get("name") + ":"
+ dataList.get(i).get("image") + ":"
+ dataList.get(i).get("price") + ":"
+ dataList.get(i).get("barcode") + "\n";
}
TextView txv = (TextView) findViewById(R.id.textView01);
txv.setText(text);
}
private void loadData() {
File sdcardDir = Environment.getExternalStorageDirectory();
String sdcard = sdcardDir.getAbsolutePath();
File file = new File(sdcard + "/Downloads/data/data.txt");
// For each entry the following lines are repeated
HashMap<String, String> hmap = new HashMap<String, String>();
String text = "", line = "";
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader(file));
while ((line = br.readLine()) != null) {
text = text + line + "\n";
}
br.close();
} catch (IOException e) {
Log.d("File Read test: Error= ", e.getMessage());
}
while (true) {
line = text.substring(0, text.indexOf('\n'));
text = text.substring(text.indexOf('\n') + 1);
hmap.put("name", line.substring(0, line.indexOf(';')));
line = line.substring(line.indexOf(';') + 1);
// Toast.makeText(this, line, Toast.LENGTH_LONG).show();
hmap.put("image", line.substring(0, line.indexOf(';')));
line = line.substring(line.indexOf(';') + 1);
// Toast.makeText(this, line, Toast.LENGTH_LONG).show();
hmap.put("price", line.substring(0, line.indexOf(';')));
line = line.substring(line.indexOf(';') + 1);
// Toast.makeText(this, line, Toast.LENGTH_LONG).show();
hmap.put("barcode", line);
dataList.add(hmap);
hmap.clear();
if (text.length() == 0)
break;
}
}
}
Ok fixed, the text file has an empty line, removed that line and the code is ok now