Android SDK AsyncTask doInBackground not running - android

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);

Related

how to upload a video to YouTube using my android app

How to upload a video to a particular YouTube account from my android app i have followed https://github.com/youtube/yt-direct-lite-android but its not very documented.
I have tried
public class YoutubeUploader {
private static final String TAG = "YoutubeUploader";
// After creating project at http://www.appspot.com DEFAULT_YTD_DOMAIN == <Developers Console Project ID>.appspot.com [ You can find from Project -> Administration -> Application settings]
//public static final String DEFAULT_YTD_DOMAIN = "developerconsolid.appspot.com";
// I used Google APIs Console Project Title as Domain name:
//public static final String DEFAULT_YTD_DOMAIN_NAME = "Domain Name";
//From Google Developer Console from same project (Created by SHA1; project package)
//Example https://console.developers.google.com/project/apps~gtl-android-youtube-test/apiui/credential
public static final String DEVELOPER_KEY = "<MY_DEVELOPER_KEY>";
// CLIENT_ID == Google APIs Console Project Number:
public static final String CLIENT_ID = "157613";
public static final String YOUTUBE_AUTH_TOKEN_TYPE = "youtube";
private static final String AUTH_URL = "https://www.google.com/accounts/ClientLogin";
// Uploader's user-name and password
private static final String USER_NAME = "my#gmail.com";
private static final String PASSWORD = "mypassword";
private static final String INITIAL_UPLOAD_URL = "https://uploads.gdata.youtube.com/resumable/feeds/api/users/default/uploads";
private static String getClientAuthToken() {
try {
URL url = new URL(AUTH_URL);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setDoOutput(true);
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
String template = "Email=%s&Passwd=%s&service=%s&source=%s";
String userName = USER_NAME; // TODO
String password = PASSWORD; // TODO
String service = YOUTUBE_AUTH_TOKEN_TYPE;
String source = CLIENT_ID;
userName = URLEncoder.encode(userName, "UTF-8");
password = URLEncoder.encode(password, "UTF-8");
String loginData = String.format(template, userName, password, service, source);
OutputStreamWriter outStreamWriter = new OutputStreamWriter(urlConnection.getOutputStream());
outStreamWriter.write(loginData);
outStreamWriter.close();
int responseCode = urlConnection.getResponseCode();
if (responseCode != 200) {
Log.d(TAG, "Got an error response : " + responseCode + " " + urlConnection.getResponseMessage());
throw new IOException(urlConnection.getResponseMessage());
} else {
InputStream is = urlConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ((line = br.readLine()) != null) {
if (line.startsWith("Auth=")) {
String split[] = line.split("=");
String token = split[1];
Log.d(TAG, "Auth Token : " + token);
return token;
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static String upload(YoutubeUploadRequest uploadRequest, ProgressListner listner, Activity activity) {
totalBytesUploaded = 0;
String authToken = getClientAuthToken();
if(authToken != null) {
String uploadUrl = uploadMetaData(uploadRequest, authToken, activity, true);
File file = getFileFromUri(uploadRequest.getUri(), activity);
long currentFileSize = file.length();
int uploadChunk = 1024 * 1024 * 3; // 3MB
int start = 0;
int end = -1;
String videoId = null;
double fileSize = currentFileSize;
while (fileSize > 0) {
if (fileSize - uploadChunk > 0) {
end = start + uploadChunk - 1;
} else {
end = start + (int) fileSize - 1;
}
Log.d(TAG, String.format("start=%s end=%s total=%s", start, end, file.length()));
try {
videoId = gdataUpload(file, uploadUrl, start, end, authToken, listner);
fileSize -= uploadChunk;
start = end + 1;
} catch (IOException e) {
Log.d(TAG,"Error during upload : " + e.getMessage());
}
}
if (videoId != null) {
return videoId;
}
}
return null;
}
public static int totalBytesUploaded = 0;
#SuppressLint("DefaultLocale")
#SuppressWarnings("resource")
private static String gdataUpload(File file, String uploadUrl, int start, int end, String clientLoginToken, ProgressListner listner) throws IOException {
int chunk = end - start + 1;
int bufferSize = 4096;
byte[] buffer = new byte[bufferSize];
FileInputStream fileStream = new FileInputStream(file);
URL url = new URL(uploadUrl);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestProperty("Authorization", String.format("GoogleLogin auth=\"%s\"", clientLoginToken));
urlConnection.setRequestProperty("GData-Version", "2");
urlConnection.setRequestProperty("X-GData-Client", CLIENT_ID);
urlConnection.setRequestProperty("X-GData-Key", String.format("key=%s", DEVELOPER_KEY));
// some mobile proxies do not support PUT, using X-HTTP-Method-Override to get around this problem
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("X-HTTP-Method-Override", "PUT");
urlConnection.setDoOutput(true);
urlConnection.setFixedLengthStreamingMode(chunk);
urlConnection.setRequestProperty("Content-Type", "video/3gpp");
urlConnection.setRequestProperty("Content-Range", String.format("bytes %d-%d/%d", start, end,
file.length()));
Log.d(TAG, urlConnection.getRequestProperty("Content-Range"));
OutputStream outStreamWriter = urlConnection.getOutputStream();
fileStream.skip(start);
double currentFileSize = file.length();
int bytesRead;
int totalRead = 0;
while ((bytesRead = fileStream.read(buffer, 0, bufferSize)) != -1) {
outStreamWriter.write(buffer, 0, bytesRead);
totalRead += bytesRead;
totalBytesUploaded += bytesRead;
double percent = (totalBytesUploaded / currentFileSize) * 100;
if(listner != null){
listner.onUploadProgressUpdate((int) percent);
}
System.out.println("GTL You tube upload progress: " + percent + "%");
/*
Log.d(LOG_TAG, String.format(
"fileSize=%f totalBytesUploaded=%f percent=%f", currentFileSize,
totalBytesUploaded, percent));
*/
//dialog.setProgress((int) percent);
// TODO My settings
if (totalRead == (end - start + 1)) {
break;
}
}
outStreamWriter.close();
int responseCode = urlConnection.getResponseCode();
Log.d(TAG, "responseCode=" + responseCode);
Log.d(TAG, "responseMessage=" + urlConnection.getResponseMessage());
try {
if (responseCode == 201) {
String videoId = parseVideoId(urlConnection.getInputStream());
return videoId;
} else if (responseCode == 200) {
Set<String> keySet = urlConnection.getHeaderFields().keySet();
String keys = urlConnection.getHeaderFields().keySet().toString();
Log.d(TAG, String.format("Headers keys %s.", keys));
for (String key : keySet) {
Log.d(TAG, String.format("Header key %s value %s.", key, urlConnection.getHeaderField(key)));
}
Log.w(TAG, "Received 200 response during resumable uploading");
throw new IOException(String.format("Unexpected response code : responseCode=%d responseMessage=%s", responseCode,
urlConnection.getResponseMessage()));
} else {
if ((responseCode + "").startsWith("5")) {
String error = String.format("responseCode=%d responseMessage=%s", responseCode,
urlConnection.getResponseMessage());
Log.w(TAG, error);
// TODO - this exception will trigger retry mechanism to kick in
// TODO - even though it should not, consider introducing a new type so
// TODO - resume does not kick in upon 5xx
throw new IOException(error);
} else if (responseCode == 308) {
// OK, the chunk completed succesfully
Log.d(TAG, String.format("responseCode=%d responseMessage=%s", responseCode,
urlConnection.getResponseMessage()));
} else {
// TODO - this case is not handled properly yet
Log.w(TAG, String.format("Unexpected return code : %d %s while uploading :%s", responseCode,
urlConnection.getResponseMessage(), uploadUrl));
}
}
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
return null;
}
private static String parseVideoId(InputStream atomDataStream) throws ParserConfigurationException,
SAXException, IOException {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse(atomDataStream);
NodeList nodes = doc.getElementsByTagNameNS("*", "*");
for (int i = 0; i < nodes.getLength(); i++) {
Node node = nodes.item(i);
String nodeName = node.getNodeName();
if (nodeName != null && nodeName.equals("yt:videoid")) {
return node.getFirstChild().getNodeValue();
}
}
return null;
}
private static File getFileFromUri(Uri uri, Activity activity) {
try {
String filePath = null;
String[] proj = { Video.VideoColumns.DATA };
Cursor cursor = activity.getContentResolver().query(uri, proj, null, null, null);
if(cursor.moveToFirst()) {
int column_index = cursor.getColumnIndexOrThrow(Video.VideoColumns.DATA);
filePath = cursor.getString(column_index);
}
cursor.close();
//String filePath = cursor.getString(cursor.getColumnIndex(Video.VideoColumns.DATA));
File file = new File(filePath);
cursor.close();
return file;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private static String uploadMetaData(YoutubeUploadRequest uploadRequest, String clientLoginToken, Activity activity, boolean retry) {
try {
File file = getFileFromUri(uploadRequest.getUri(), activity);
if(file != null) {
String uploadUrl = INITIAL_UPLOAD_URL;
URL url = new URL(uploadUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Authorization", String.format("GoogleLogin auth=\"%s\"", clientLoginToken));
connection.setRequestProperty("GData-Version", "2");
connection.setRequestProperty("X-GData-Client", CLIENT_ID);
connection.setRequestProperty("X-GData-Key", String.format("key=%s", DEVELOPER_KEY));
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/atom+xml");
connection.setRequestProperty("Slug", file.getAbsolutePath());
String title = uploadRequest.getTitle();
String description = uploadRequest.getDescription();
String category = uploadRequest.getCategory();
String tags = uploadRequest.getTags();
String template = readFile(activity, R.raw.gdata).toString();
String atomData = String.format(template, title, description, category, tags);
/*String template = readFile(activity, R.raw.gdata_geo).toString();
atomData = String.format(template, title, description, category, tags,
videoLocation.getLatitude(), videoLocation.getLongitude());*/
OutputStreamWriter outStreamWriter = new OutputStreamWriter(connection.getOutputStream());
outStreamWriter.write(atomData);
outStreamWriter.close();
int responseCode = connection.getResponseCode();
if (responseCode < 200 || responseCode >= 300) {
// The response code is 40X
if ((responseCode + "").startsWith("4") && retry) {
Log.d(TAG, "retrying to fetch auth token for ");
clientLoginToken = getClientAuthToken();
// Try again with fresh token
return uploadMetaData(uploadRequest, clientLoginToken, activity, false);
} else {
return null;
}
}
return connection.getHeaderField("Location");
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static CharSequence readFile(Activity activity, int id) {
BufferedReader in = null;
try {
in = new BufferedReader(new InputStreamReader(activity.getResources().openRawResource(id)));
String line;
StringBuilder buffer = new StringBuilder();
while ((line = in.readLine()) != null) {
buffer.append(line).append('\n');
}
// Chomp the last newline
buffer.deleteCharAt(buffer.length() - 1);
return buffer;
} catch (IOException e) {
return "";
} finally {
closeStream(in);
}
}
/**
* Closes the specified stream.
*
* #param stream The stream to close.
*/
private static void closeStream(Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// Ignore
}
}
}
public static interface ProgressListner {
void onUploadProgressUpdate(int progress);
}
I am getting 404 error in getClientAuthToken() method.I think "https://www.google.com/accounts/ClientLogin";deprecated by google any alternative to this

Database insert data

I receive data in webservice and insert in sqlite database Android but if filed is empty repeat before filed As far as new filed no empty and repeat ...
please help me:
public class gfc extends AsyncTask {
private String Link = "";
private String Count = "";
private String tid = "";
private String tim = "";
private String tuser = "";
private String tusername = "";
private String tmatn = "";
private String tcomments = "";
private String tlikes = "";
private String tdate = "";
private String tip_addr = "";
private database db;
public gfc(String link, String count, Context c) {
Link = link;
Count = count;
db = new database(c);
}
#Override
protected String doInBackground(Object... arg0) {
try {
String data = URLEncoder.encode("count", "UTF8") + "=" + URLEncoder.encode(Count, "UTF8");
URL mylink = new URL(Link);
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;
db.open();
while ((line = reader.readLine()) != null) {
int f = 0;
int c = 0;
for (int i = 0; i < line.length(); i++) {
if (line.charAt(i) == '|') {
String temp = line.substring(f, i);
if (c == 0) {
tid = temp;
}
if (c == 1) {
tdate = temp;
}
if (c == 2) {
tuser = temp;
}
if (c == 3) {
tusername = temp;
}
if (c == 4) {
tip_addr = temp;
}
if (c == 5) {
tcomments = temp;
}
if (c == 6) {
tlikes = temp;
}
if (c == 7) {
tim = temp;
}
if (c == 8) {
tmatn = temp.replace("^", "\n");
}
c += 1;
f = i + 1;
}
}
db.insert(tid, tuser, tusername, tmatn, tcomments, tlikes, tdate, tip_addr, tim);
sb.append("t");
}
db.close();
index.res = sb.toString();
} catch (Exception e) {}
return "";
}
}

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;
}

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