Develop Reference

delimiter issue while reading from csv to sqlite

I tried every search on the net but couldn't managed to find a solution. I have managed to create a csv file(as attached in the image). But while importing it to sqlite whatever I do I can't have the correct rows in the correct positions in my sqlite, I believe it's about delimiters but couldn't find out can you help me please, I'm looking for it for the last 2 days. thank you
File exportDir = new File(Environment.getExternalStorageDirectory(), "/XXX/");
if (!exportDir.exists()) { exportDir.mkdirs(); }
File file2 = new File(exportDir, "XXX.csv");
FileReader file = new FileReader(file2);
BufferedReader buffer = new BufferedReader(file);
ContentValues contentValues=new ContentValues();
String line = "";
String tableName =WordListOpenHelper.MY_LIST_TABLE;
db.beginTransaction();
while ((line = buffer.readLine()) != null)
{
x++;
String[] str = line.split("\\+");
if (x>5) {
contentValues.put(Contract.WordList.KEY_ENTRY, str[0]);
contentValues.put(Contract.WordList.KEY_NICKNAME_DATE, str[1]);
contentValues.put(Contract.WordList.KEY_LOCATION, str[2]);
contentValues.put(Contract.WordList.KEY_LOCATION_IMAGE, str[3]);
contentValues.put(Contract.WordList.KEY_HEART, str[4]);
db.insert(tableName, null, contentValues);
}
}
db.setTransactionSuccessful();
db.endTransaction();
And CSVWriter class
public class CSVWriter {
private PrintWriter pw;
private String separator;
private char escapechar;
private String lineEnd;
private char quotechar;
public static final String DEFAULT_SEPARATOR = "+\n";
public static final char NO_QUOTE_CHARACTER = '\u0000';
public static final char NO_ESCAPE_CHARACTER = '\u0000';
public static final String DEFAULT_LINE_END = "+\n";
public static final char DEFAULT_QUOTE_CHARACTER = '"';
public static final char DEFAULT_ESCAPE_CHARACTER = ' ';
public CSVWriter(Writer writer) {
this(writer, DEFAULT_SEPARATOR, DEFAULT_QUOTE_CHARACTER,
DEFAULT_ESCAPE_CHARACTER, DEFAULT_LINE_END);
}
public CSVWriter(Writer writer, String separator, char quotechar, char escapechar, String lineEnd) {
this.pw = new PrintWriter(writer);
this.separator = separator;
this.quotechar = quotechar;
this.escapechar = escapechar;
this.lineEnd = lineEnd;
}
public void writeNext(String[] nextLine) {
try{
if (nextLine == null)
return;
StringBuffer sb = new StringBuffer();
for (int i = 0; i < nextLine.length; i++) {
if (i != 0) {
sb.append(separator);
}
String nextElement = nextLine[i];
if (nextElement == null)
continue;
if (quotechar != NO_QUOTE_CHARACTER)
sb.append(quotechar);
for (int j = 0; j < nextElement.length(); j++) {
char nextChar = nextElement.charAt(j);
if (escapechar != NO_ESCAPE_CHARACTER && nextChar == quotechar) {
sb.append(escapechar).append(nextChar);
} else if (escapechar != NO_ESCAPE_CHARACTER && nextChar == escapechar) {
sb.append(escapechar).append(nextChar);
} else {
sb.append(nextChar);
}
}
if (quotechar != NO_QUOTE_CHARACTER)
sb.append(quotechar);
}
sb.append(lineEnd);
pw.write(sb.toString());
}
catch (Exception ex) {
ex.printStackTrace();
}
}
public void close() throws IOException {
pw.flush();
pw.close();
}
public void flush() throws IOException {
pw.flush();
}
}
CSV file in file manager:

This is not exactly a csv file, so it needs special dealing.
Use this method:
public String getLine(String line) {
line = line.trim();
if (line.isEmpty())
return "";
if (line.equals("\"\"+"))
return "";
if (line.length() <= 3)
return "";
return line.substring(1, line.length() - 1);
}
and this instead of your while loop:
boolean noMoreLines = false;
for (int i = 1; i <= 5; i++) {
line = buffer.readLine();
if (line == null) {
noMoreLines = true;
break;
}
}
if (!noMoreLines) {
while ((line = buffer.readLine()) != null) {
contentValues.put(Contract.WordList.KEY_ENTRY, getLine(line));
if ((line = buffer.readLine()) != null)
contentValues.put(Contract.WordList.KEY_NICKNAME_DATE, getLine(line));
if ((line = buffer.readLine()) != null)
contentValues.put(Contract.WordList.KEY_LOCATION, getLine(line));
if ((line = buffer.readLine()) != null)
contentValues.put(Contract.WordList.KEY_LOCATION_IMAGE, getLine(line));
if ((line = buffer.readLine()) != null)
contentValues.put(Contract.WordList.KEY_HEART, getLine(line));
db.insert(tableName, null, contentValues);
}
}

Android SDK AsyncTask doInBackground not running

plz help me
I did added async library at my project and checked already, I don't know why code flow doesn't go in to asynctask
my Update code doesn't execute.
in this line my update calss doesnt run
dataupdate.execute();
CODE:
public class Update extends AsyncTask<Void, Void, Integer> {
private String User;
private final String mLink;
public Update(String user) {
User = user;
mLink = "http://www./Update.php";
}
#Override
protected Integer doInBackground(Void... params) {
try {
String data = URLEncoder.encode("username", "UTF8") + "=" + URLEncoder.encode(User, "UTF8");
URL mylink = new URL(mLink);
URLConnection connect = mylink.openConnection();
connect.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(connect.getOutputStream());
wr.write(data);
wr.flush();
BufferedReader reader = new BufferedReader(new InputStreamReader(connect.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
int f = 0, w = 0, C = 0;
String name = null;
String status = null;
Integer money = null;
boolean isDebtor = false;
boolean isCreditor = false;
for (int i = 0; i < line.length(); i++) {
if (line.charAt(i) == '|') {
if (w == 1) {
String temp2 = line.substring(f, i);
if (!temp2.equals(User)) {
isDebtor = true;
name = temp2;
}
} else if (w == 2) {
String temp2 = line.substring(f, i);
if (!temp2.equals(User)) {
isCreditor = true;
name = temp2;
}
} else if (w == 3) {
String temp2 = line.substring(f, i);
money = Integer.parseInt(temp2);
} else if (w == 4) {
String temp2 = line.substring(f, i);
status = temp2;
}
f = i + 1;
w++;
}
}
Pair<String, Pair<Integer, String>> temp = new Pair<>(name, new Pair<>(money, status));
if (isDebtor) {
MainActivity.Debtor.add(temp);
}
if (isCreditor) {
MainActivity.Creditor.add(temp);
}
}
} catch (Exception e) {
}
return null;
}
}
Main:
showProgress(true);
dataupdate = new Update(username);
dataupdate.execute();
// dataupdate.execute((Void) null);
showProgress(false);

do it like this
public class Update extends AsyncTask<String, String, Integer> {
#Override
protected Integer doInBackground(String... params) {
User user=params[0]; //get string user value here
try {
String data = URLEncoder.encode("username", "UTF8") + "=" + URLEncoder.encode(user, "UTF8");
URL mylink = new URL(mLink);
URLConnection connect = mylink.openConnection();
connect.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(connect.getOutputStream());
wr.write(data);
wr.flush();
BufferedReader reader = new BufferedReader(new InputStreamReader(connect.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
int f = 0, w = 0, C = 0;
String name = null;
String status = null;
Integer money = null;
boolean isDebtor = false;
boolean isCreditor = false;
for (int i = 0; i < line.length(); i++) {
if (line.charAt(i) == '|') {
if (w == 1) {
String temp2 = line.substring(f, i);
if (!temp2.equals(User)) {
isDebtor = true;
name = temp2;
}
} else if (w == 2) {
String temp2 = line.substring(f, i);
if (!temp2.equals(User)) {
isCreditor = true;
name = temp2;
}
} else if (w == 3) {
String temp2 = line.substring(f, i);
money = Integer.parseInt(temp2);
} else if (w == 4) {
String temp2 = line.substring(f, i);
status = temp2;
}
f = i + 1;
w++;
}
}
Pair<String, Pair<Integer, String>> temp = new Pair<>(name, new Pair<>(money, status));
if (isDebtor) {
MainActivity.Debtor.add(temp);
}
if (isCreditor) {
MainActivity.Creditor.add(temp);
}
}
} catch (Exception e) {
e.printstacktrace();
}
return null;
}
}
to run
//put username value in execute
new Update()execute(username);

JSON object is returning -1

I want to store these values to server.
The data which i have to store is complete in the variables.
I should get
{"response":{"result":1,"Message":"Poll Entered Successfully."}}
from server
but getting -1
#Override
protected String doInBackground(String... params) {
String jsonString = null;
HttpURLConnection linkConnection = null;
try {
String squestion = question.getText().toString();
String shashtag = hashTag.getText().toString();
spolltime = polltime.getText().toString();
StringBuilder scat = new StringBuilder();
scat.append("");
scat.append(categoryid);
StringBuilder sid = new StringBuilder();
sid.append("");
sid.append(LoginPage.logid);
//int ipolltime = Integer.parseInt(spolltime);
String equestion = URLEncoder.encode(squestion,"UTF-8");
String ehashtag = URLEncoder.encode(shashtag,"UTF-8");
String ecategory = URLEncoder.encode(scat.toString(),"UTF-8");
String eA = URLEncoder.encode(OptionA.stext,"UTF-8");
String eB = URLEncoder.encode(OptionB.stext,"UTF-8");
String eC = URLEncoder.encode(OptionC.stext,"UTF-8");
String eD = URLEncoder.encode(OptionD.stext,"UTF-8");
String eid = URLEncoder.encode(sid.toString(),"UTF-8");
String epolltime = URLEncoder.encode(spolltime,"UTF-8");
URL linkurl = new URL("http://iipacademy.in/askpoll/pollfeeds.php?user_id="+eid+"&question="+equestion+
"&hashtag="+ehashtag+"&category_id="+ecategory+"&option1="+eA+"&option2="+eB+"&option3="+eC+"&option4="+eD+"" +
"&pollopen="+epolltime+"&optiontype1=texty&optiontype2=texty&optiontype3=texty&optiontype4=texty");
linkConnection = (HttpURLConnection) linkurl.openConnection();
int responseCode = linkConnection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
InputStream linkinStream = linkConnection.getInputStream();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int j = 0;
while ((j = linkinStream.read()) != -1) {
baos.write(j);
}
byte[] data = baos.toByteArray();
jsonString = new String(data);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (linkConnection != null) {
linkConnection.disconnect();
}
}
//Toast.makeText(getApplicationContext(),jsonString.toString(),
//Toast.LENGTH_LONG).show();
return jsonString;
}
I am not able to find my mistake !
thanks

first of all try to make this call from browser and check for response . there is an extension
on chrome PostMan rest client. please check first. may be you are not getting the response correctly.

email extractor android program crashes aide

public class MainActivity extends Activity {
public static LinearLayout layout = null;
public static EditText urlstring = null;
public static Button submit = null;
public static ListView emailsfound = null;
public static ArrayList<String> emaillist = new ArrayList<String>();
public static ArrayList<String> urllist = new ArrayList<String>();
public static ArrayAdapter<String> adapter = null;
/**
* Called when the activity is first created.
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
layout = new LinearLayout(this);
urlstring = new EditText(this);
submit = new Button(this);
submit.setText("Submit");
emailsfound = new ListView(this);
layout.setOrientation(LinearLayout.VERTICAL);
layout.addView(urlstring);
layout.addView(submit);
layout.addView(emailsfound);
setContentView(layout);
adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, emaillist);
emailsfound.setAdapter(adapter);
submit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
urllist.add(urlstring.getText().toString());
int i = 0;
while (true) {
String page = getPage(urlstring.getText().toString());
ArrayList<String> urls = new ArrayList<String>();
urls = getURLs(page);
ArrayList<String> addresses = new ArrayList<String>();
addresses = getAddresses(page);
for (int a = 0; i < urls.size(); i++) {
urllist.add(urls.get(a));
}
for (int a = 0; a < addresses.size(); i++) {
emaillist.add(addresses.get(a));
}
removeDuplicates(urllist);
removeDuplicates(emaillist);
adapter.notifyDataSetChanged();
i++;
urlstring.setText(urllist.get(i).toString());
}
}
;
});
}
public String getPage(String url) {
if (url.toLowerCase().startsWith("http") == false) {
url = "http://" + url;
}
URL fromstring = null;
URLConnection openConnection = null;
try {
fromstring = new URL(url);
openConnection = fromstring.openConnection();
BufferedReader in = null;
url = "";
in = new BufferedReader(new InputStreamReader(openConnection.getInputStream()));
String input = "";
if (in != null) {
while ((input = in.readLine()) != null) {
url = url + input + "\r\n";
}
in.close();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return url;
}
public ArrayList<String> getURLs(String page) {
ArrayList<String> s = new ArrayList<String>();
while (page.toLowerCase().contains("<a href=\"http")) {
int i = page.toLowerCase().indexOf("href=\"http") + "href=\"".length();
if (i > -1) {
String s1 = page.substring(i, page.toLowerCase().indexOf("\"", i));
s.add(s1);
page = page.substring(i + "http".length());
}
}
return s;
}
public boolean validate(String email) {
Pattern pattern;
Matcher matcher;
final String EMAIL_PATTERN = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*" + "#[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
pattern = Pattern.compile(EMAIL_PATTERN);
matcher = pattern.matcher(email);
return matcher.matches();
}
public ArrayList<String> getAddresses(String page) {
ArrayList<String> s = new ArrayList<String>();
while (page.contains("#")) {
int i = page.indexOf("#");
if (i > -1) {
int beginning = page.lastIndexOf(" ", i);
if (beginning > -1) {
int ending = page.indexOf(" ", i);
if (ending > -1) {
String address = page.substring(beginning + 1, ending - 1);
address = address.toLowerCase();
if (address.startsWith("href=\"mailto:")) {
int b = address.indexOf(":") + 1;
address = address.substring(b);
int e = address.indexOf("\"");
if (e > -1) {
if (e > address.indexOf("#")) {
address = address.substring(0, address.indexOf("\""));
}
if (address.contains("?")) {
address = address.substring(0, address.indexOf("?"));
}
if (!address.contains("<") && !address.contains(">")) {
if (validate(address)) {
s.add(address);
}
}
} else {
int b2 = address.indexOf(">") + 1;
if (b2 > -1) {
if (b2 < address.indexOf("#")) {
address = address.substring(b2);
}
}
int e2 = address.indexOf("<");
if (e2 > -1) {
if (e2 > address.indexOf("#")) {
address = address.substring(0, e2);
}
}
if (!address.contains("<") && !address.contains(">")) {
if (validate(address)) {
s.add(address);
}
}
}
}
}
}
}
page = page.substring(i + 1);
}
return s;
}
public ArrayList<String> removeDuplicates(ArrayList<String> List) {
ArrayList<String> output = new ArrayList<String>();
for (int i = 0; i < List.size(); i++) {
boolean b = false;
for (int a = 0; a < List.size(); i++) {
if (List.get(i).toString().toLowerCase().equals(List.get(a).toString().toLowerCase())) {
b = true;
}
}
if (b == false) {
output.add(List.get(i));
}
}
return output;
}
}
This Program Was Made in AIDE on an android netbook.
It Crashes On Button Click. I was wondering what I Was doing wrong.
I tried before with runnables but it crashed then too. I'm new to
android development but I am fluent in Java. I noticed there are
alot of differences between android and Java.

How to ping the server in Android?

How can I ping some web server in Android to test if I've Internet connection?
So I need the method which pings the given site and returns false if I've no Internet and true if I have.

See this method, it's the best way to check for connectivity to a given server:
http://developer.android.com/reference/java/net/InetAddress.html#isReachable(int)

Use these methods to ping the server
public static void inSomeWhere()
{
String pingResult = getPingResult("168.126.63.1");
boolean isNetOk = true;
if (pingResult == null) {
// not reachable!!!!!
isNetOk = false;
}
}
public static String getPingResult(String a) {
String str = "";
String result = "";
BufferedReader reader = null;
char[] buffer = new char[4096];
StringBuffer output = new StringBuffer();
try {
Runtime r = Runtime.getRuntime();
Process process = r.exec("/system/bin/ping -c 3 " + a);
reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
int i;
while ((i = reader.read(buffer)) > 0)
output.append(buffer, 0, i);
str = output.toString();
final String[] b = str.split("---");
final String[] c = b[2].split("rtt");
if (b.length == 0 || c.length == 0)
return null;
if(b.length == 1 || c.length == 1)
return null;
result = b[1].substring(1, b[1].length()) + c[0] + c[1].substring(1, c[1].length());
} catch (IOException e) {
return null;
} catch (Exception e) {
return null;
}
finally
{
if(reader != null)
{
try{reader.close();}catch(IOException ie){}
}
}
return result;
}