I already have a dataprovider method to read data - i.e it will loop through the excel using two for loops and put that into an object array.
Now I want to simplify it instead of using for loops.
I have tried the following, but dont know how to put that into an object array.
New code:
data = new String[rowCount][columnCount];
DataFormatter format = new DataFormatter();
// loop through the rows
sheet.forEach(row -> {
row.forEach(cell -> {
String cellValue = format.formatCellValue(cell);
});
old code:
// loop through the rows
for(int i=1; i <rowCount+1; i++){
try {
XSSFRow row = sheet.getRow(i);
for(int j=0; j <columnCount; j++){ // loop through the columns
try {
String cellValue = "";
try{
Cell cel = row.getCell(j);
cellValue = format.formatCellValue(cel);
}
catch(NullPointerException e){
}
data[i-1][j] = cellValue; // add to the data array
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
Related
have an UITableView with index and when I scroll to bottom load more cell from server,the problem is that when I try to add more cells shows "assertion failed" error, this is how I was trying to add cells.
Note: Table view source its modified and without adding more cell works fine
List<ICContactTableItem>items,itemsAdd;
Dictionary<string, List<ICContactTableItem>> indexedTableItems;//parameter in tableviewsource
string[] keys;//parameter in tableviewsource
UITableView tableContact;
public void addContacts(){
InvokeOnMainThread (delegate {
try{
tableContact.BeginUpdates();
int count=items.Count;
List<NSIndexPath> tmpArray = new List<NSIndexPath>();
foreach(ICContactTableItem item in itemsAdd){
if(item.firstName.Length>0){
if (indexedTableItems.ContainsKey (item.firstName[0].ToString ())) {
indexedTableItems [item.firstName [0].ToString ()].Add (item);
NSIndexPath tmpIndexPath = NSIndexPath.FromRowSection(
indexedTableItems[item.firstName [0].ToString ()].Count-1,
getIndex(item.firstName [0].ToString ()));
tmpArray.Add(tmpIndexPath);
} else {
indexedTableItems.Add (item.firstName [0].ToString (), new List<ICContactTableItem> () { item });
tableContact.InsertSections(NSIndexSet.FromIndex(getIndex(item.firstName [0].ToString ()))
,UITableViewRowAnimation.None);
NSIndexPath tmpIndexPath = NSIndexPath.FromRowSection(
indexedTableItems[item.firstName [0].ToString ()].Count-1,
getIndex(item.firstName [0].ToString ()));
tmpArray.Add(tmpIndexPath);
}
}else{
if (indexedTableItems.ContainsKey (" ")) {
indexedTableItems [" "].Add (item);
NSIndexPath tmpIndexPath = NSIndexPath.FromRowSection(
indexedTableItems[" "].Count,
getIndex(" "));
tmpArray.Add(tmpIndexPath);
} else {
indexedTableItems.Add (" ", new List<ICContactTableItem> () { item });
indexedTableItems [" "].Add (item);
tableContact.InsertSections(NSIndexSet.FromIndex(getIndex(" "))
,UITableViewRowAnimation.None);
NSIndexPath tmpIndexPath = NSIndexPath.FromRowSection(
indexedTableItems[" "].Count,
getIndex(" "));
tmpArray.Add(tmpIndexPath);
}
}
}
keys=indexedTableItems.Keys.ToArray();
items.AddRange(itemsAdd);
tableContact.InsertRows(tmpArray.ToArray(),UITableViewRowAnimation.None);
tableContact.EndUpdates();
tableContact.ReloadData();
tableContact.SetNeedsLayout();
}catch(Exception e){
Console.WriteLine(e.StackTrace);
}
ICLayoutMgr.Get().SetBusy(false);
});
}
int getIndex (string str)
{
string[] keysOrdered = indexedTableItems.Keys.ToArray();
int res = 0;
for (int i = 0; i < keysOrdered.Length; i++) {
if (keysOrdered [i] == str) {
res = i;
}
}
return res;
}
Before you make any calls to tell the table to add or remove any rows, you must update your data source with by adding or removing data. The table will check how many sections and rows there are before and after your add/remove rows. The number of sections and rows after the change must properly reflect how much data you add/remove with how many rows you add/remove.
And of course you must implement the NumberOfRowsInSection method.
I am using following code for getting contents of a web page
String url = "http://abc.com/qrticket.asp?qrcode="
+ "2554";
try {
url += ";deviceside=true;interface=wifi;ConnectionTimeout=" + 50000;
HttpConnection connection = (HttpConnection) Connector.open(url,
Connector.READ_WRITE);
connection.setRequestMethod(HttpConnection.GET);
// connection.openDataOutputStream();
InputStream is = connection.openDataInputStream();
String res = "";
int chr;
while ((chr = is.read()) != -1) {
res += (char) chr;
}
is.close();
connection.close();
showDialog(parseData(res));
} catch (IOException ex) {
ex.printStackTrace();
showDialog("http: " + ex.getMessage());
} catch (Exception ex) {
ex.printStackTrace();
showDialog("unknown: " + ex.getMessage());
}
public void showDialog(final String text) {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Dialog.alert(text);
}
});
}
public String parseData(String str) {
String[] data = split(str, "//");
StringBuffer builder = new StringBuffer();
for (int i = 0; i < data.length; i++) {
System.out.println("data:" + data[i]);
String[] vals = split(data[i], ">>");
if (vals.length > 1) {
System.out.println(vals[0]);
builder.append(vals[0].trim()).append(": ")
.append(vals[1].trim()).append("\n");
} else {
builder.delete(0, builder.toString().length()).append(
vals[0].trim());
break;
}
}
return builder.toString();
}
public String[] split(String splitStr, String delimiter) {
// some input validation
if (delimiter == null || delimiter.length() == 0) {
return new String[] { splitStr };
} else if (splitStr == null) {
return new String[0];
}
StringBuffer token = new StringBuffer();
Vector tokens = new Vector();
int delimLength = delimiter.length();
int index = 0;
for (int i = 0; i < splitStr.length();) {
String temp = "";
if (splitStr.length() > index + delimLength) {
temp = splitStr.substring(index, index + delimLength);
} else {
temp = splitStr.substring(index);
}
if (temp.equals(delimiter)) {
index += delimLength;
i += delimLength;
if (token.length() > 0) {
tokens.addElement(token.toString());
}
token.setLength(0);
continue;
} else {
token.append(splitStr.charAt(i));
}
i++;
index++;
}
// don't forget the "tail"...
if (token.length() > 0) {
tokens.addElement(token.toString());
}
// convert the vector into an array
String[] splitArray = new String[tokens.size()];
for (int i = 0; i > splitArray.length; i++) {
splitArray[i] = (String) tokens.elementAt(i);
}
return splitArray;
}
This is working absolutely fine in simulator but giving 'http:null' (IOException) on device, I dont know why??
How to solve this problem?
Thanks in advance
I think the problem might be the extra connection suffixes you're trying to add to your URL.
http://abc.com/qrticket.asp?qrcode=2554;deviceside=true;interface=wifi;ConnectionTimeout=50000
According to this BlackBerry document, the ConnectionTimeout parameter isn't available for Wifi connections.
Also, I think that if you're using Wifi, your suffix should simply be ";interface=wifi".
Take a look at this blog post on making connections on BlackBerry Java, pre OS 5.0. If you only have to support OS 5.0+, I would recommend using the ConnectionFactory class.
So, I would try this with the url:
http://abc.com/qrticket.asp?qrcode=2554;interface=wifi
Note: it's not clear to me whether your extra connection parameters are just ignored, or are actually a problem. But, since you did get an IOException on that line, I would try removing them.
The problem was that no activation of blackberry internet service. After subscription problem is solved.
Thanks alto all of you especially #Nate
From the API page, I gather there's no function for what I'm trying to do. I want to read text from a file storing it as a list of strings, manipulate the text, and save the file. The first part is easy using the function:
abstract List<String> readAsLinesSync([Encoding encoding = Encoding.UTF_8])
However, there is no function that let's me write the contents of the list directly to the file e.g.
abstract void writeAsLinesSync(List<String> contents, [Encoding encoding = Encoding.UTF_8, FileMode mode = FileMode.WRITE])
Instead, I've been using:
abstract void writeAsStringSync(String contents, [Encoding encoding = Encoding.UTF_8, FileMode mode = FileMode.WRITE])
by reducing the list to a single string. I'm sure I could also use a for loop and feed to a stream line by line. I was wondering two things:
Is there a way to just hand the file a list of strings for writing?
Why is there a readAsLinesSync but no writeAsLinesSync? Is this an oversight or a design decision?
Thanks
I just made my own export class that handles writes to a file or for sending the data to a websocket.
Usage:
exportToWeb(mapOrList, 'local', 8080);
exportToFile(mapOrList, 'local/data/data.txt');
Class:
//Save data to a file.
void exportToFile(var data, String filename) =>
new _Export(data).toFile(filename);
//Send data to a websocket.
void exportToWeb(var data, String host, int port) =>
new _Export(data).toWeb(host, port);
class _Export {
HashMap mapData;
List listData;
bool isMap = false;
bool isComplex = false;
_Export(var data) {
// Check is input is List of Map data structure.
if (data.runtimeType == HashMap) {
isMap = true;
mapData = data;
} else if (data.runtimeType == List) {
listData = data;
if (data.every((element) => element is Complex)) {
isComplex = true;
}
} else {
throw new ArgumentError("input data is not valid.");
}
}
// Save to a file using an IOSink. Handles Map, List and List<Complex>.
void toFile(String filename) {
List<String> tokens = filename.split(new RegExp(r'\.(?=[^.]+$)'));
if (tokens.length == 1) tokens.add('txt');
if (isMap) {
mapData.forEach((k, v) {
File fileHandle = new File('${tokens[0]}_k$k.${tokens[1]}');
IOSink dataFile = fileHandle.openWrite();
for (var i = 0; i < mapData[k].length; i++) {
dataFile.write('${mapData[k][i].real}\t'
'${mapData[k][i].imag}\n');
}
dataFile.close();
});
} else {
File fileHandle = new File('${tokens[0]}_data.${tokens[1]}');
IOSink dataFile = fileHandle.openWrite();
if (isComplex) {
for (var i = 0; i < listData.length; i++) {
listData[i] = listData[i].cround2;
dataFile.write("${listData[i].real}\t${listData[i].imag}\n");
}
} else {
for (var i = 0; i < listData.length; i++) {
dataFile.write('${listData[i]}\n');
}
}
dataFile.close();
}
}
// Set up a websocket to send data to a client.
void toWeb(String host, int port) {
//connect with ws://localhost:8080/ws
//for echo - http://www.websocket.org/echo.html
if (host == 'local') host = '127.0.0.1';
HttpServer.bind(host, port).then((server) {
server.transform(new WebSocketTransformer()).listen((WebSocket webSocket) {
webSocket.listen((message) {
var msg = json.parse(message);
print("Received the following message: \n"
"${msg["request"]}\n${msg["date"]}");
if (isMap) {
webSocket.send(json.stringify(mapData));
} else {
if (isComplex) {
List real = new List(listData.length);
List imag = new List(listData.length);
for (var i = 0; i < listData.length; i++) {
listData[i] = listData[i].cround2;
real[i] = listData[i].real;
imag[i] = listData[i].imag;
}
webSocket.send(json.stringify({"real": real, "imag": imag}));
} else {
webSocket.send(json.stringify({"real": listData, "imag": null}));
}
}
},
onDone: () {
print('Connection closed by client: Status - ${webSocket.closeCode}'
' : Reason - ${webSocket.closeReason}');
server.close();
});
});
});
}
}
I asked Mads Agers about this. He works on the io module. He said that he decided not to add writeAsLines because he didn't find it useful. For one it is trivial to write the for loop and the other thing is that you have to parameterize it which the kind of line separator that you want to use. He said he can add it if there is a strong feeling that it would be valuable. He didn't immediately see a lot of value in it.
I am useing kxml parser for my j2me application. I am reading the file from phone memory and parsing the xml file to display the data(have various level of filter). On each filter i need to read the data from this file. For first time i created the parser and every time i re-assign this parser1(reference-original) to the paerser2(used to parse data). For first time i got the correct answer, but second time i haven't got the file content it shows null as data.
Here is my code:
FileConnection fc = (FileConnection)Connector.open(rmsObj.rmsData.elementAt(0).toString());
InputStream in = fc.openInputStream();
InputStreamReader is = new InputStreamReader(in);
commonAppObj.externParser = new XmlParser(is);
commonAppObj class file.
protected void fileread() {
try {
if(externParser != null){
parser = externParser;
fileparser(parser);
}else{
InputStream in = this.getClass().getResourceAsStream(this.dataBase);
InputStreamReader is = new InputStreamReader(in);
parser = new XmlParser(is);
fileparser(parser);
}
} catch (IOException ioe) {
} finally {
parser = null;
}
}
private void fileparser(XmlParser parser){
try {
ParseEvent event = null;
dataflag = 0;
dataflagS = 0;
System.out.println("findtags = " + findtags);
while (((event = parser.read()).getType() != Xml.END_DOCUMENT) && (dataflag != 1)) {
if (event.getType() == Xml.START_TAG) {
String name = event.getName();
if (name != null && name.equals(findtags)) {
dataflag = 0;
parseAddressTag(parser);
}
name = null;
}
event = null;
}
} catch (IOException ioe) {
} finally {
parser = null;
}
}
}
If your InputStream returns true in a call to markSupported you may reset it at the end of fileparser method, but first you need to call mark right after creating it.
if (in.markSupported()) {
in.mark(in.available());
}
I'm trying to combine all scripts into one.. I have two folders, the main folder 'scripts' and the other 'scripts/other'.
When I try:
BundleTable.Bundles.Add(new ScriptBundle("~/scripts/all").Include("~/Scripts/*.js", "~/Scripts/other/*.js"));
scripts from 'scripts/other' are not included.
but when I invert the order:
BundleTable.Bundles.Add(new ScriptBundle("~/scripts/all").Include("~/Scripts/other/*.js", "~/Scripts/*.js"));
it works!!
Someone can tell me why?
Can you try calling the IncludeDirectory methods directly and seeing if you see the same issue?
ScriptBundle("~/scripts/all").IncludeDirectory("~/Scripts", "*.js").IncludeDirectory("~/Scripts/other", "*.js"));
If this works, then it's possible we have a bug here.
I don't know what is happening, but this is the code inside the System.Web.Optimization.Bundle:
// System.Web.Optimization.Bundle
public Bundle Include(params string[] virtualPaths)
{
for (int i = 0; i < virtualPaths.Length; i++)
{
string text = virtualPaths[i];
Exception ex = Bundle.ValidateVirtualPath(text, "virtualPaths");
if (ex != null)
{
throw ex;
}
if (text.Contains('*'))
{
int num = text.LastIndexOf('/');
string text2 = text.Substring(0, num);
if (text2.Contains('*'))
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, OptimizationResources.InvalidPattern, new object[]
{
text
}), "virtualPaths");
}
string text3 = "";
if (num < text.Length - 1)
{
text3 = text.Substring(num + 1);
}
PatternType patternType = PatternHelper.GetPatternType(text3);
ex = PatternHelper.ValidatePattern(patternType, text3, "virtualPaths");
if (ex != null)
{
throw ex;
}
this.IncludeDirectory(text2, text3);
}
else
{
this.IncludeFile(text);
}
}
return this;
}