Develop Reference

Android notifyDataSetChanged not refreshing the items after removing

So I am trying to remove the itempending however it does not remove it from the listview immediately on click. I have to go back and come back to this screen and it will be removed. However my other listview on the same screen was updated immediately (The submitted profile method). I tried to create a method that does the same function I need and call it in before the notifyDataSetChanged but nothing works. Any advise on why my notifyDataSetChanged is not working would be appreciated thanks.
ArrayAdapter<String> adapterSubmit, adapterPending;
ArrayList<String> itemsSubmit, itemsPending;
ListView lstSubmitPro, lstPendingPro;
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/CaptureLogs";
Button btnSubmit;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.content_pro_list);
btnSubmit = (Button) findViewById(R.id.btnTest);
lstSubmitPro = (ListView) findViewById(R.id.lstSubmitPro);
lstPendingPro = (ListView) findViewById(R.id.lstPendingPro);
itemsSubmit = new ArrayList<String>();
adapterSubmit = new ArrayAdapter(this, R.layout.prolist, R.id.tvRows, itemsSubmit);
lstSubmitPro.setAdapter(adapterSubmit);
itemsPending = new ArrayList<String>();
adapterPending = new ArrayAdapter(this, android.R.layout.simple_list_item_multiple_choice, itemsPending);
lstPendingPro.setAdapter(adapterPending);
lstPendingPro.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
pendingSubmitProfile();
SubmittedProfile();
btnSubmit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SparseBooleanArray sp = lstPendingPro.getCheckedItemPositions();
if (sp!= null) {
for (int i = 0; i < sp.size(); i++) {
if (sp.valueAt(i) == true) {
SubmittedProfile();
adapterSubmit.notifyDataSetChanged();
itemsPending.remove(sp.get(i));
adapterPending.notifyDataSetChanged();
Toast.makeText(ProList.this, "Your profiles have been submitted successfully.", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(ProList.this, "Please choose a profile to be submitted.", Toast.LENGTH_LONG).show();
}
}
}
}
});
public void pendingSubmitProfile()
{
File dir = new File(path);
File[] files = dir.listFiles();
for (File f : files) {
if (f.isFile()) {
BufferedReader inputStream = null;
try {
inputStream = new BufferedReader(new FileReader(f));
String lineToRead = "--PENDING SUBMIT--";
String CurrentLine;
while ((CurrentLine = inputStream.readLine()) != null) {
if (CurrentLine.equals(lineToRead)) {
String filen = f.getName().substring(0, f.getName().lastIndexOf("."));
itemsPending.add(filen);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public void SubmittedProfile()
{
File dir = new File(path);
File[] files = dir.listFiles();
for (File f : files) {
if (f.isFile()) {
BufferedReader inputStream = null;
try {
inputStream = new BufferedReader(new FileReader(f));
String lineToRead = "--SUBMITTED--";
String CurrentLine;
while ((CurrentLine = inputStream.readLine()) != null) {
if (CurrentLine.equals(lineToRead)) {
String filen = f.getName().substring(0, f.getName().lastIndexOf("."));
itemsSubmit.add(filen);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
LOG
Before, 2 items but 1 checked
05-02 08:00:02.409 4293-4293/com.example.irambi.irmobilewizard D/returned value:: 2 1 2
After, 2 items but 1 checked
05-02 08:00:03.726 4293-4293/com.example.irambi.irmobilewizard D/returned value:: 0 1 0
This is for 1 item and 1 checked. I cannot tell if this is before or after since theres only 1 printed on logcat. This will crash and error is as follows
05-02 08:03:35.345 4293-4293/com.example.irambi.irmobilewizard D/returned value:: 1 1 1
java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
Before, 2 items but 2 checked
05-02 08:07:56.378 4596-4596/com.example.irambi.irmobilewizard D/returned value:: 2 2 2
After, 2 items but 2 checked - This will crash
05-02 08:07:57.671 4596-4596/com.example.irambi.irmobilewizard D/returned value:: 0 2 0
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 0
All the testing are done using
itemsPending.remove(sp.keyAt(i));
adapterPending.remove(adapterPending.getItem(sp.keyAt(i)));
Log based on:
Log.d("returned value:", itemsPending.size() + " " + sp.size() + " " + adapterPending.getCount());

Try this one
itemsPending.remove(sp.keyAt(i));
adapterPending.remove(adapterPending.getItem(sp.keyAt(i)));
adapterPending.notifyDataSetChanged();
EDIT:
So basically the switching of list data is working fine. What's messing the code is his file writing. I resolve it this way.
First is a create a function that would update my Pending Files to submitted.
public void submitPendingProfile(String filename){
try {
BufferedReader file = new BufferedReader(new FileReader(path + "/" + filename+".txt"));
String line;
StringBuffer inputBuffer = new StringBuffer();
while ((line = file.readLine()) != null) {
inputBuffer.append(line);
inputBuffer.append('\n');
}
String inputStr = inputBuffer.toString();
file.close();
inputStr = inputStr.replace("--PENDING SUBMIT--", "--SUBMITTED--");
FileOutputStream fileOut = new FileOutputStream(path + "/" + filename+".txt");
fileOut.write(inputStr.getBytes());
fileOut.close();
} catch (Exception e) {
System.out.println("Problem reading file.");
}
}
Then i refactor the loop for simplier process. Like removing the line SubmittedProfile(); that keeps reading all text files if conditions is true. That is a lot of process. Here's how instead.
for(int i = lstPendingPro.getAdapter().getCount() - 1 ; i >= 0; i--) {
if (sp.get(i)) {
//So when file is submitted, i update the files status using the above function.
submitPendingProfile(itemsPending.get(i));
//To avoid rereading of files, just add the item before removing it to the pending list
itemsSubmit.add(itemsPending.get(i));
adapterSubmit.notifyDataSetChanged();
itemsPending.remove(sp.keyAt(i));
adapterPending.notifyDataSetChanged();
Toast.makeText(ProList.this, "Your profiles have been submitted successfully.", Toast.LENGTH_LONG).show();
}
}

Did You tried changing your code to this order
btnSubmit.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick (View v){
SparseBooleanArray sp = lstPendingPro.getCheckedItemPositions();
if (sp != null) {
for (int i = 0; i < sp.size(); i++) {
if (sp.valueAt(i) == true) {
SubmittedProfile();
itemsPending.remove(sp.get(i));
Toast.makeText(ProList.this, "Your profiles have been submitted successfully.", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(ProList.this, "Please choose a profile to be submitted.", Toast.LENGTH_LONG).show();
}
}
}
adapterSubmit.notifyDataSetChanged();
adapterPending.notifyDataSetChanged();
}
});

Try this code..
itemsPending.remove(itemsPending.indexOf(sp.get(i)));
adapterPending.notifyDataSetChanged();

itemsPending.remove(sp.get(i));
adapterPending.notifyDataSetChanged();
listview.invalidate();
Try above code might be it will help you.

How to Read from text file and Store into an Array in android

Hie Friends
I am developing an android application in that text file should be generated with some numbers. and after this one by one application should call to that numbers.
For eg:
9876452125,
9876452135,
9876452115,
Mostly that text file have 8 numbers which is Separated by "," and New Line "\n"
Now I want to read From that file line by line.
My Code for read file and store to array is:
public void read(String fname)
{
BufferedReader br = null;
try
{
StringBuffer output = new StringBuffer();
String fpath = "/sdcard/" + fname + ".txt";
br = new BufferedReader(new FileReader(fpath));
String line = null;
int index = 0;
String[][] num = new String[15][10];
List<String[]> collection = new ArrayList<String[]>();
while ((line = br.readLine()) != null)
{
if (index < num.length)
{
output.append(line);
// output.append("\n");
num[index] = line.split(",");
if (num.length > 0)
{
collection.add(num[index]);
}
}
Toast.makeText(getApplicationContext(), "" + collection, 5000)
.show();
index++;
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
Now My problem is when I printing collection to Toast it display some random strings. I don't know why??
Does any one have proper idea or sample code for how to read from file line by line and store to Array.
Thanks allot.

If I was you I'd use a scanner. You haven't given information on how you plan to store them: for example, why you use String[][] num = new String[15][10];, but I'll give you an example of if you wanted to store each number in it's own element, and you can adjust if necessary (I am assuming there is only one newline at the end of every line in your file).
public void read(String fname) {
String fpath = "/sdcard/" + fname + ".txt";
File file = new File(fpath);
Scanner scanner = new Scanner(new FileInputStream(file));
List<String[]> collection = new ArrayList<String[]>();
while (scanner.hasNextLine()){
String line = scanner.nextLine();
String.replaceAll("\n", ""); // strip the newline
String[] myList = myString.split(",");
for (i=0; i < myList.length; i++) {
collection.add(myList[i]);
}
}
scanner.close();
}
This doesn't have any android elements in it, but like I said you can adjust as necessary to do what you specifically need it to do.

ArrayList<ArrayList<String>> myArray = new ArrayList<ArrayList<String>>();
ArrayList<String> stringArray = new ArrayList<String>();
String random = "9876452125, 9876452135, 9876452115,";
String[] splitArray = random.split(",");
for (int i = 0; i < splitArray.length; i++) {
stringArray.add(splitArray[i]);
}
myArray.add(stringArray);
// printing all values
for (int i = 0; i < myArray.size(); i++) {
for (int j = 0; j < myArray.get(i).size(); j++) {
System.out.println("values of index " + i + " are :"
+ myArray.get(i).get(j));
}
}

Compare contents of two files line by line

public class MainActivity extends Activity {
FileOutputStream fos;
FileInputStream fOne, fTwo;
ArrayList<String> arr1 = new ArrayList<String>();
ArrayList<String> arr2 = new ArrayList<String>();
ArrayList<String> words = new ArrayList<String>();
ArrayList<String> wordsTwo = new ArrayList<String>();
int count = 0;
int countTwo = 0;
int countThree = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button fileOne = (Button)findViewById(R.id.file1);
Button fileTwo = (Button)findViewById(R.id.file2);
Button compare = (Button)findViewById(R.id.compare);
arr1.add("1");
arr1.add("2");
arr1.add("3");
arr1.add("4");
//arr1.add("3");
arr2.add("1");
arr2.add("2");
fileOne.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
try
{
fos = openFileOutput("File1", Context.MODE_PRIVATE);
for(int temp = 0; temp< arr1.size(); temp++)
{
fos.write((arr1.get(temp).getBytes()) );
fos.write(System.getProperty("line.separator").getBytes());
}
fos.close();
fos.flush();
}
catch(Exception e)
{
}
}
});
fileTwo.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
try
{
fos = openFileOutput("File2", Context.MODE_PRIVATE);
for(int temp = 0; temp< arr2.size(); temp++)
{
fos.write((arr2.get(temp).getBytes()) );
fos.write(System.getProperty("line.separator").getBytes());
}
fos.close();
fos.flush();
}
catch(Exception e)
{
}
}
});
compare.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
try
{
fOne = openFileInput("File1");
fTwo = openFileInput("File2");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Scanner scanFile = new Scanner(new DataInputStream(fOne));
Scanner scanFileT = new Scanner(new DataInputStream(fTwo));
words = new ArrayList<String>();
wordsTwo = new ArrayList<String>();
while (scanFile.hasNextLine())
{
if(scanFile.nextLine()!=null)
{
count++;
}
while(scanFileT.hasNextLine())
{
if(scanFileT.nextLine()!=null)
{
countTwo++;
}
}
}
try
{
fOne.close();
fTwo.close();
scanFile.close();
scanFileT.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Toast.makeText(getBaseContext(), "One : " + count, 1000).show();
Toast.makeText(getBaseContext(), "Two : " + countTwo, 1000).show();
Toast.makeText(getBaseContext(), "Three : " + countThree, 1000).show();
count = 0 ;
countTwo = 0;
countThree = 0;
}
});
}
}
Above is the code to write and read the file. What I did here, write two files and read the contents..Now I have to compare contents of files line by line. What needs to be done?

Try following code. This will give you desired output. I took files from asset directory. So you need to replace that line of code if you are taking files from other directory.
private void compareFiles() throws Exception {
String s1 = "";
String s2 = "", s3 = "", s4 = "";
String y = "", z = "";
// Reading the contents of the files
BufferedReader br = new BufferedReader(new InputStreamReader(
getAssets().open("first.txt")));
BufferedReader br1 = new BufferedReader(new InputStreamReader(
getAssets().open("second.txt")));
while ((z = br1.readLine()) != null) {
s3 += z;
s3 += System.getProperty("line.separator");
}
while ((y = br.readLine()) != null) {
s1 += y;
s1 += System.getProperty("line.separator");
}
// String tokenizing
StringTokenizer st = new StringTokenizer(s1);
String[] a = new String[10000];
for (int l = 0; l < 10000; l++) {
a[l] = "";
}
int i = 0;
while (st.hasMoreTokens()) {
s2 = st.nextToken();
a[i] = s2;
i++;
}
StringTokenizer st1 = new StringTokenizer(s3);
String[] b = new String[10000];
for (int k = 0; k < 10000; k++) {
b[k] = "";
}
int j = 0;
while (st1.hasMoreTokens()) {
s4 = st1.nextToken();
b[j] = s4;
j++;
}
// comparing the contents of the files and printing the differences, if
// any.
int x = 0;
for (int m = 0; m < a.length; m++) {
if (a[m].equals(b[m])) {
} else {
x++;
Log.d("Home", a[m] + " -- " + b[m]);
}
}
Log.d("Home", "No. of differences : " + x);
if (x > 0) {
Log.d("Home", "Files are not equal");
} else {
Log.d("Home", "Files are equal. No difference found");
}
}
Input File 1
Hi
Hello
Chintan
Rathod
Input File 2
Hi
HellO
Chintan
RathoD
Output
08-26 12:07:58.219: DEBUG/Home(2350): Hello3. -- HellO3.
08-26 12:07:58.219: DEBUG/Home(2350): Rathod -- RathoD
08-26 12:07:58.229: DEBUG/Home(2350): No. of differences : 2
08-26 12:07:58.229: DEBUG/Home(2350): Files are not equal
Edit
To get Difference between two files
Use StringUtils library which is provide by Apache and check this Documentation for more about that library.
And modify following lines of code.
int x = 0;
for (int m = 0; m < a.length; m++) {
if (a[m].equals(b[m])) {
} else {
x++;
Log.d("Home", a[m] + " -- " + b[m]);
//to print difference
if (a[m].length() < b[m].length())
Log.d("Home", "" + StringUtils.difference(a[m], b[m]));
else
Log.d("Home", "" + StringUtils.difference(b[m], a[m]));
}
}
Output
08-26 17:51:26.949: DEBUG/Home(17900): 12 -- 123
08-26 17:51:26.949: DEBUG/Home(17900): Difference String : 3
08-26 17:51:26.949: DEBUG/Home(17900): No. of differences : 1
08-26 17:51:26.949: DEBUG/Home(17900): Files are not equal

Try using java.util.Scanner
while (sc1.hasNext() && sc2.hasNext()) {
String str1 = sc1.next();
String str2 = sc2.next();
if (!str1.equals(str2))
System.out.println(str1 + " != " + str2);
}

Change your while loop to the following:
while (scanFile.hasNextLine() && scanFileT.hasNextLine())
{
if(scanFileT.nextLine().equals(scanFile.nextLine()))
{
// The lines are equal.
} else {
// The lines are not equal.
}
}
if(scanFile.hasNextLine() || scanFileT.hasNextLine())
{
// If more lines remain in one of the files, they are not equal.
} else {
// If no content remains in both files, they are equal.
}
Depending on the size of your file, I would recommend some optimisation like checking the file sizes before you go through them line by line.
The overall logic reads as follows; if both have another line, compare it to see if it is equal. If they don't have another line, check if one of them has lines remaining, if so, they are not equal.
Update
After clarifying the objective of the comparison in chat, see the comments to this question, I have come to the conclusion that another comparison would be more effective and, as a matter of fact, correct. The comparison algorithm above works great if comparing the structure of text but not if comparing a data vector which may or may not be sorted. After some discussion, we came to the conclusion that data needs to be sorted or the comparison will blow the complexity to at least O(n^2)which could be done in O(2n) if the data is sorted. Here the algorithm's skeleton:
if(! scanGroupFriends.hasNextLine())
{
//simple sanity check to see if we need to compare at all. In this case, add all friends.
} else {
String nextFriend = scanGroupFriends.nextLine();
while(scanAllFriends.hasNextLine())
{
if(scanAllFriends.nextLine().equals(nextFriend))
{
// Friend already figures, do not add him and advance the list of group friends.
if(scanGroupFriends.hasNextLine())
{
nextFriend = scanGroupFriends.nextLine();
} else {
// There are no more friends in the group, add all remaining friends to list to show.
break; // Terminate the `while` loop.
}
}
}
}
However, I personally think it is bad to make to many assumptions. What I would suggest is that the friends be saved in a Set, a TreeSet for example. Then, serialize the object rather than manually writing it to file. Sets are neat because they hold several interesting objects. For example, you could easily use the following code to remove all friends in a group from the set of all friends:
allFriends.removeAll(groupFriends);
However, be aware that this removes it from the set completely so you should make a copy beforehand.

regular-expressions android

i have string like these for example
309\306\308\337_338
309\306\337_338
310
311\315_316\336_337
311\315_316\336_337
311\335_336
these strings means list of page number , for example string "309\306\308\337_339" means
pages 309,306,308,337,338,339
i want to pass one of these string to function which return it as string like this
309,306,308,337,338,339
this function do that but in c# , i want to impalement in android
private static string Get_PageNumbers(string str)
{
ArrayList arrAll = new ArrayList();
MatchCollection match;
string[] excar;
string strid, firstNumber, lastlNumber;
int fn, ln;
ArrayList arrID = new ArrayList();
//***In Case The Range Number Between "_"
if (str.Contains("_"))
{
// match_reg = new Regex("(w?[\\d]+)*(_[\\d]+)");
Regex matchReg = new Regex("(w?[\\69]+_[\\d]+)*(q?[\\d]+//)*(a?[\\d]+_[\\d]+)*(y?[\\d]+)*");
match = matchReg.Matches(str);
int count = match.Count;
excar = new string[0];
for (int i = 0; i < count; i++)
{
Array.Resize(ref excar, count);
excar[i] = match[i].Groups[0].Value;
if (excar[i] != string.Empty)
arrID.Add(excar[i]);
}
//******IF Array Contains Range Of Number Like"102_110"
if (str.Contains("_"))
{
for (int i = 0; i < arrID.Count; i++)
{
strid = arrID[i].ToString();
if (arrID[i].ToString().Contains("_"))
{
int idy = strid.LastIndexOf("_");
firstNumber = strid.Substring(0, idy);
if (idy != -1)
{
lastlNumber = strid.Substring(idy + 1);
fn = int.Parse(firstNumber);
arrAll.Add(fn);
ln = int.Parse(lastlNumber);
for (int c = fn; c < ln; c++)
{
fn++;
arrAll.Add(fn);
}
}
}
else
{
arrAll.Add(arrID[i].ToString());
}
}
//******If Array Contain More Than One Number
if (arrAll.Count > 0)
{
str = "";
for (int i = 0; i < arrAll.Count; i++)
{
if (str != string.Empty)
str = str + "," + arrAll[i];
else
str = arrAll[i].ToString();
}
}
}
}
//***If string Contains between "/" only without "_"
else if (str.Contains("/") && !str.Contains("_"))
{
str = str.Replace("/", ",");
}
else if (str.Contains("\\"))
{
str = str.Replace("\\", ",");
}
return str;
}

I think this is easier to do with split function:
public static String Get_PageNumbers(String str) {// Assume str = "309\\306\\308\\337_338"
String result = "";
String[] pages = str.split("\\\\"); // now we have pages = {"309","306","308","337_338"}
for (int i = 0; i < pages.length; i++) {
String page = pages[i];
int index = page.indexOf('_');
if (index != -1) { // special case i.e. "337_338", index = 3
int start = Integer.parseInt(page.substring(0, index)); // start = 337
int end = Integer.parseInt(page.substring(index + 1)); // end = 338
for (int j = start; j <= end; j++) {
result += String.valueOf(j);
if (j != end) { // don't add ',' after last one
result += ",";
}
}
} else { // regular case i.e. "309","306","308"
result += page;
}
if (i != (pages.length-1)) { // don't add ',' after last one
result += ",";
}
}
return result; // result = "309,306,308,337,338"
}
For example this function when called as follows:
String result1 = Get_PageNumbers("309\\306\\308\\337_338");
String result2 = Get_PageNumbers("311\\315_316\\336_337");
String result3 = Get_PageNumbers("310");
Returns:
309,306,308,337,338
311,315,316,336,337
310

if i can suggest different implementation....
first, split string with "\" str.split("\\");, here you receive an array string with single number or a pattern like "num_num"
for all string founded, if string NOT contains "" char, put string in another array (othArr named), than, you split again with "" str.split("_");, now you have a 2 position array
convert that 2 strings in integer
now create a loot to min val form max val or two strings converted (and put it into othArr)
tranform othArr in a string separated with ","

Android CSV parser problem

I am having an issue while parsing a CSV file. It is only 2 rows of data with a comma separating them. Row one is a date and row 2 is a value. The date field will always have dates in it but sometimes the value is blank (or null?). When it gets to the null value I get a StringIndexOutOfBoundsException and the app crashes. I am logging each loop and can see the data but as soon as I get to a null value it stops looping and gives the error. If there are no null values then it works perfect. Here is my code:
BufferedReader buf = new BufferedReader(new StringReader(file));
String line = null;
while ((line = buf.readLine()) != null) {
try {
String date = null, value = null;
String[] RowData = line.split(",");
date = RowData[0];
value = RowData[1]; (this is the row it crashes on)
This is what the CSV looks like:
2011-08-28 09:16,8.23
2011-08-28 09:15,8.24
2011-08-28 09:14,8.26
2011-08-28 09:13,8.34
2011-08-28 09:12,
2011-08-28 09:11,10.72
2011-08-28 09:10,
2011-08-28 09:09,
the value at 09:13 is the last thing in logcat before I get the error.
This fixed it:
if(RowData.length == 2) {
date = RowData[0];
value = RowData[1];
} else {
date = RowData[0];
value = "0";
}
I wrote a 0 in the value field so later processes will not choke on the null value. Thanks for all your help guys!

You want to do this or something like it:
String date = null, value = null;
String[] RowData = line.split(",");
date = RowData[0];
if(RowData.length ==2)value = RowData[1]; (this is the row it crashes on)
Or some variation of it e.g. if(RowData.length < 2) dont attempt to read the value. Its a pretty standard thing - if you ask an array for an index of a value it doesn't have Java will crash.

Why write your own CSV parsing when you could use a library that has already been written which will do it for you? Perhaps OpenCSV would help you achieve your CSV parsing goal.

Check the length of RowData before you try to access it. It looks like split() is returning an array with a single object but you're trying to access the second object, which is indeed out of bounds.

public class CityParser {
DocumentBuilderFactory factory;
DocumentBuilder builder;
Document doc;
Element ele;
int mediaThumbnailCount;`enter code here`
boolean urlflag;
CityListBean objBean = null;
Vector<CityListBean> vecCityList;
public CityParser() {
}
public Vector<CityListBean> getCityData() {
vecCityList = new Vector<CityListBean>();
try {
HttpClient httpClient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpGet httpGet = new HttpGet(
"http://heresmyparty.com/cms/index.php?option=com_chronocontact&chronoformname=add_event_form_download");
HttpResponse response = httpClient.execute(httpGet, localContext);
// String result = "";
BufferedReader reader = new BufferedReader(new InputStreamReader(
response.getEntity().getContent()));
CSVReader csvreader = new CSVReader(reader);
String[] nextLine;
while ((nextLine = csvreader.readNext()) != null) {
CityListBean objcitylist = new CityListBean();
// nextLine[] is an array of values from the line
objcitylist.setText_title(nextLine[5]);
objcitylist.setText_host(nextLine[6]);
objcitylist.setText_price(nextLine[7]);
objcitylist.setDate(nextLine[8]);
objcitylist.setText_venue(nextLine[11]);
objcitylist.setAddress(nextLine[12]);
objcitylist.setLatitude(nextLine[13]);
objcitylist.setLongitude(nextLine[14]);
objcitylist.setFile(nextLine[15]);
objcitylist.setText_description(nextLine[16]);
objcitylist.setCity(nextLine[17]);
vecCityList.addElement(objcitylist);
}
/*for (int i = 0; i < vecCityList.size(); i++) { CityListBean
objcity = (CityListBean) vecCityList.get(i);
System.out.println("Cf_id : " + objcity.getCityName());
System.out.println("-----------------------------------"); }*/
} catch (Exception ex) {
ex.printStackTrace();
}
return vecCityList;
}
}
==========================================================================================
public class CSVReader {
private BufferedReader br;
private boolean hasNext = true;
private char separator;
private char quotechar;
private int skipLines;
private boolean linesSkiped;
public static final char DEFAULT_SEPARATOR = ',';
public static final char DEFAULT_QUOTE_CHARACTER = '"';
public static final int DEFAULT_SKIP_LINES = 0;
public CSVReader(Reader reader) {
this(reader, DEFAULT_SEPARATOR, DEFAULT_QUOTE_CHARACTER,
DEFAULT_SKIP_LINES);
}
public CSVReader(Reader reader, char separator, char quotechar, int line) {
this.br = new BufferedReader(reader);
this.separator = separator;
this.quotechar = quotechar;
this.skipLines = line;
}
public String[] readNext() throws IOException {
String nextLine = getNextLine();
return hasNext ? parseLine(nextLine) : null;
}
private String getNextLine() throws IOException {
if (!this.linesSkiped) {
for (int i = 0; i < skipLines; i++) {
br.readLine();
}
this.linesSkiped = true;
}
String nextLine = br.readLine();
if (nextLine == null) {
hasNext = false;
}
return hasNext ? nextLine : null;
}
private String[] parseLine(String nextLine) throws IOException {
if (nextLine == null) {
return null;
}
List<String> tokensOnThisLine = new ArrayList<String>();
StringBuffer sb = new StringBuffer();
boolean inQuotes = false;
do {
if (inQuotes) {
// continuing a quoted section, reappend newline
sb.append("\n");
nextLine = getNextLine();
if (nextLine == null)
break;
}
for (int i = 0; i < nextLine.length(); i++) {
char c = nextLine.charAt(i);
if (c == quotechar) {
// this gets complex... the quote may end a quoted block, or escape another quote.
// do a 1-char lookahead:
if( inQuotes // we are in quotes, therefore there can be escaped quotes in here.
&& nextLine.length() > (i+1) // there is indeed another character to check.
&& nextLine.charAt(i+1) == quotechar ){ // ..and that char. is a quote also.
// we have two quote chars in a row == one quote char, so consume them both and
// put one on the token. we do *not* exit the quoted text.
sb.append(nextLine.charAt(i+1));
i++;
}else{
inQuotes = !inQuotes;
// the tricky case of an embedded quote in the middle: a,bc"d"ef,g
if(i>2 //not on the begining of the line
&& nextLine.charAt(i-1) != this.separator //not at the begining of an escape sequence
&& nextLine.length()>(i+1) &&
nextLine.charAt(i+1) != this.separator //not at the end of an escape sequence
){
sb.append(c);
}
}
} else if (c == separator && !inQuotes) {
tokensOnThisLine.add(sb.toString());
sb = new StringBuffer(); // start work on next token
} else {
sb.append(c);
}
}
} while (inQuotes);
tokensOnThisLine.add(sb.toString());
return (String[]) tokensOnThisLine.toArray(new String[0]);
}
public void close() throws IOException{
br.close();
}
}

Have you tried to check first
if (RowData[1]!=null) or possibly if (RowData[1]!="")
I don't see why that would cause your app to crash though,
it should just set value to null or ""