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unfortunately app closed error in android app when i debug the code

I have developed an app in android to find power shut down.When i run the app ,unfortunately closed once I debug the app.Here I got the error in doInbackground
My java code is here
private static final String URL = "http://livechennai.com/powershutdown_news_chennai.asp";
//private static final String URL = "http://livechennai.com/powercut_schedule.asp";
ProgressDialog mProgressDialog;
EditText filterItems;
ArrayAdapter<String> arrayAdapter;
protected String[] doInBackground(Void... params) {
ArrayList<String> hrefs=new ArrayList<String>();
try {
// Connect to website
Document document = Jsoup.connect(URL).get();
// Get the html document title
websiteTitle = document.title();
Elements table=document.select("#table13>tbody>tr>td>a[title]");
for(Element link:table){
hrefs.add(link.attr("abs:href"));
//int arraySize=hrefs.size();
//websiteDescription=link.attr("abs:href");
}
} catch (IOException e) {
e.printStackTrace();
}
//get the array list values
for(String s:hrefs)
{
websiteDescription=hrefs.get(0);
websiteDescription1=hrefs.get(1);
websiteDescription2=hrefs.get(2);
websiteDescription3=hrefs.get(3);
}
Below is the error log
06-09 23:17:10.284 17923-17937/com.example.poweralert.app E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:299)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
at java.util.concurrent.FutureTask.run(FutureTask.java:239)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:838)
Caused by: java.lang.IllegalArgumentException: Must supply a valid URL
at org.jsoup.helper.Validate.notEmpty(Validate.java:102)
at org.jsoup.helper.HttpConnection.url(HttpConnection.java:60)
at org.jsoup.helper.HttpConnection.connect(HttpConnection.java:30)
at org.jsoup.Jsoup.connect(Jsoup.java:73)
at com.example.poweralert.app.PrimaryActivity$FetchWebsiteData.doInBackground(PrimaryActivity.java:144)
at com.example.poweralert.app.PrimaryActivity$FetchWebsiteData.doInBackground(PrimaryActivity.java:100)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
            at java.lang.Thread.run(Thread.java:838)
06-09 23:17:10.
How to solve this error/issue? It shows null in website description .

Looks like there is an error in URL connection. Are you not passing valid URL?
Caused by: java.lang.IllegalArgumentException: Must supply a valid URL

Show following stack trace while Making HTTP call [duplicate]

This question already has answers here:
How can I fix 'android.os.NetworkOnMainThreadException'?
(66 answers)
Closed 8 years ago.
I use the following line of code to get HttpResponce from the server. While running the code I get the following stack trace in the logcat. Any clue why?
Code used by me:
new DeleteDirectoryLoaderTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
class DeleteDirectoryLoaderTask extends AsyncTask<URL, Integer, Long>
{
DeleteDirectoryLoaderTask()
{
}
#Override
protected void onPreExecute()
{
}
#Override
protected Long doInBackground(URL... urls)
{
try
{
HttpResponse responceFromServer = m_HttpResponceInstance.makeRequest("post", HTTP_URI + "/" + "signup", registrationHeader, jsonMain);
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
#Override
protected void onProgressUpdate(Integer... progress)
{
}
#Override
protected void onPostExecute(Long result)
{
}
}
public HttpResponse makeRequest(String httpMethod, String url, Map<String, String> Header, JSONObject jsonObject) throws Exception
{
HttpResponse responce = null;
if(httpMethod.equals("post"))
{
DefaultHttpClient httpclient = new DefaultHttpClient();
//url with the post data
HttpPost httpost = new HttpPost(url);
//passes the results to a string builder/entity
StringEntity se = new StringEntity(jsonObject.toString());
//sets the post request as the resulting string
httpost.setEntity(se);
for ( String key : Header.keySet() )
{
//sets a request header so the page receving the request
//will know what to do with it
httpost.setHeader(key, Header.get(key));
}
responce = httpclient.execute(httpost);
System.out.println(responce);
}
return responce;
}
Stack Trace in log cat
06-07 13:24:14.007: W/System.err(1857): android.os.NetworkOnMainThreadException
06-07 13:24:14.017: W/System.err(1857): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118)
06-07 13:24:14.022: W/System.err(1857): at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
06-07 13:24:14.022: W/System.err(1857): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
06-07 13:24:14.022: W/System.err(1857): at java.net.InetAddress.getAllByName(InetAddress.java:214)
06-07 13:24:14.027: W/System.err(1857): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
06-07 13:24:14.027: W/System.err(1857): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
06-07 13:24:14.027: W/System.err(1857): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
06-07 13:24:14.027: W/System.err(1857): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
06-07 13:24:14.032: W/System.err(1857): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:670)
06-07 13:24:14.032: W/System.err(1857): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:509)
06-07 13:24:14.032: W/System.err(1857): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
06-07 13:24:14.032: W/System.err(1857): at in.plackal.lovecyclesfree.HttpResponceManager.makeRequest(HttpResponceManager.java:54)
06-07 13:24:14.037: W/System.err(1857): at in.plackal.lovecyclesfree.RegisterAccountActivity.onClick(RegisterAccountActivity.java:161)
06-07 13:24:14.037: W/System.err(1857): at android.view.View.performClick(View.java:4261)
06-07 13:24:14.037: W/System.err(1857): at android.view.View$PerformClick.run(View.java:17356)
06-07 13:24:14.037: W/System.err(1857): at android.os.Handler.handleCallback(Handler.java:615)
06-07 13:24:14.037: W/System.err(1857): at android.os.Handler.dispatchMessage(Handler.java:92)
06-07 13:24:14.042: W/System.err(1857): at android.os.Looper.loop(Looper.java:137)
06-07 13:24:14.042: W/System.err(1857): at android.app.ActivityThread.main(ActivityThread.java:4921)
06-07 13:24:14.042: W/System.err(1857): at java.lang.reflect.Method.invokeNative(Native Method)
06-07 13:24:14.042: W/System.err(1857): at java.lang.reflect.Method.invoke(Method.java:511)
06-07 13:24:14.047: W/System.err(1857): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
06-07 13:24:14.047: W/System.err(1857): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
06-07 13:24:14.047: W/System.err(1857): at dalvik.system.NativeStart.main(Native Method)

This must be done in asynctask. (http://developer.android.com/reference/android/os/AsyncTask.html)
Put code inside doInBackground

Do this whole work in Async task dear
This exception is thrown when an application attempts to perform a networking operation on its main thread. Run your code in AsyncTask:(http://developer.android.com/reference/android/os/AsyncTask.html)
How to execute the task:
new RetrieveFeedTask().execute(urlToRssFeed);
Don't forget to add this to AndroidManifest.xml file:
<uses-permission android:name="android.permission.INTERNET"/>

Please call this method from background Thread. i.e. Use AsyncTask. and then call this method from inside doInBackground()

You are running task on main thread, look at the firt line of stack trace.
android.os.NetworkOnMainThreadException
According to this answer: https://stackoverflow.com/a/19323642/619673
You can't make network requests on the main thread. You'll get the
error you are seeing now. You need to use either AsyncTask or you need
to create a new thread. Personally, I'd use AsyncTask. When you use
AsyncTask you can use the onPostExecute method to return the value to
the main thread. - Blaine

json parse error inside a Asyntask in android

I get this error "Sometimes" in my App, I use a Asyntask:
03-19 08:10:05.768: E/AndroidRuntime(280): FATAL EXCEPTION: main
03-19 08:10:05.768: E/AndroidRuntime(280): java.lang.NumberFormatException: unable to parse 'null' as integer
03-19 08:10:05.768: E/AndroidRuntime(280): at java.lang.Integer.parseInt(Integer.java:406)
03-19 08:10:05.768: E/AndroidRuntime(280): at java.lang.Integer.parseInt(Integer.java:382)
03-19 08:10:05.768: E/AndroidRuntime(280): at java.lang.Integer.valueOf(Integer.java:682)
03-19 08:10:05.768: E/AndroidRuntime(280): at Dic.proj.pkg.notifService$1$1$1$1.onPostExecute(notifService.java:76)
03-19 08:10:05.768: E/AndroidRuntime(280): at Dic.proj.pkg.notifService$1$1$1$1.onPostExecute(notifService.java:1)
03-19 08:10:05.768: E/AndroidRuntime(280): at android.os.AsyncTask.finish(AsyncTask.java:417)
03-19 08:10:05.768: E/AndroidRuntime(280): at android.os.AsyncTask.access$300(AsyncTask.java:127)
03-19 08:10:05.768: E/AndroidRuntime(280): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
03-19 08:10:05.768: E/AndroidRuntime(280): at android.os.Handler.dispatchMessage(Handler.java:99)
03-19 08:10:05.768: E/AndroidRuntime(280): at android.os.Looper.loop(Looper.java:123)
03-19 08:10:05.768: E/AndroidRuntime(280): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-19 08:10:05.768: E/AndroidRuntime(280): at java.lang.reflect.Method.invokeNative(Native Method)
03-19 08:10:05.768: E/AndroidRuntime(280): at java.lang.reflect.Method.invoke(Method.java:521)
03-19 08:10:05.768: E/AndroidRuntime(280): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-19 08:10:05.768: E/AndroidRuntime(280): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-19 08:10:05.768: E/AndroidRuntime(280): at dalvik.system.NativeStart.main(Native Method)
i call my Asyntask inside a timer. this is my my Asyntask:
// fetch new notifications
class fetch_last_asyn extends AsyncTask<Void, Integer, Boolean> {
#Override
protected Boolean doInBackground(Void... arg0) {
RestClient client = new RestClient(
"http://myaddress.org/api/get_last.php");
client.AddParam("last", String.valueOf(last_notif_no));
try {
client.Execute(RequestMethod.GET);
} catch (Exception e) {
e.printStackTrace();
}
String response = client.getResponse();
last_notifs = response.toString();
return true;
}
}
Inside my app I send my Asyntask result to parse to a code (parse_get_update), this is it:
public static String[][] parse_get_update(String jsonResponse) {
String[][] notifs = new String[3000][10];
try {
JSONArray jsonArray = new JSONArray(jsonResponse);
for (int index = 0; index < jsonArray.length(); index++) {
JSONObject json = jsonArray.getJSONObject(index);
// get name & id here
String id = json.getString("id");
String notifno = json.getString("notifno");
String title = json.getString("title");
String description = json.getString("description");
notifs[index][0] = id;
notifs[index][1] = notifno;
notifs[index][2] = title;
notifs[index][3] = description;
// notif_count++;
}
cnt2 = jsonArray.length();
} catch (JSONException e) {
e.printStackTrace();
}
return notifs;
}
Why do I get this error? What is NULL? I cant understand this.
I use ResClient for parse JSON. This error occures sometimes only, about 10% of times...
Thanks for your answers

In your postExecute() method, somewhere, you're parsing a String to Integer using this - Integer.parseInt(str);
Most of the times that str is a valid number, hence, its working. But those 10% of times, that str is probably missing or coming as an emtpy String from the JSON and hence, a null is passed to the Integer.parseInt(null), which is causing the java.lang.NumberFormatException.
Identify that piece of code, and put a null check for that, before parsing it to Integer.

The error means that you are trying to parse a string which has nothing in it. To demonstrate you have are doing like below.
String s = "";
int i = Integer.parseInt(s);
You need to have a condition like below so that it doesn't parse if the string is empty. You can even use try catch block as well.
if(s is not null) {
then do parse here
}
else {
assign a default value
}

This is happening due to you're parsing a String to Integer see this answer.

Android Freebase Query IOException

I am attempting a simple Freebase Query within Android, Eclipse. I believe the URL compiles correctly, as I can copy/paste the encoded URL, copy/paste it into a browser and it pulls up the correct result. The line HttpResponse httpResponse = httpClient.execute... is throwing an IOException.
JSONParser parser = new JSONParser();
String query = "{\"type\":\"/user/tsegaran/language/phrase\",\"id\":null,\"name\":\"Affidavit\",\"/user/tsegaran/language/phrase/translation\":[]}";
String testQuery = URLEncoder.encode(query, "UTF-8");
String testQuery1 = "https://www.googleapis.com/freebase/v1/mqlread?query=" + testQuery + "&key=" + API_KEY;
HttpClient httpClient = new DefaultHttpClient();
HttpResponse httpResponse = httpClient.execute(new HttpGet(testQuery1));
JSONObject response = (JSONObject)parser.parse(EntityUtils.toString(httpResponse.getEntity()));
String jsonResults = response.getString("result");
JSONObject object = (JSONObject) new JSONTokener(jsonResults).nextValue();
String name = object.getString("/user/tsegaran/language/phrase/translation");
...
Here is a better formatted version of my Stack Trace:
java.net.UnknownHostException: www.googleapis.com
java.net.InetAddress.lookupHostByName(InetAddress.java:506)
java.net.InetAddress.getAllByNameImpl(InetAddress.java:294)
java.net.InetAddress.getAllByName(InetAddress.java:256)
org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:359)
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
com.example.nworthen_androidpoc.MainActivity.test(MainActivity.java:60)
com.example.nworthen_androidpoc.MainActivity.onCreate(MainActivity.java:32)
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
android.app.ActivityThread.access$1500(ActivityThread.java:117)
android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
android.os.Handler.dispatchMessage(Handler.java:99)
android.os.Looper.loop(Looper.java:130)
android.app.ActivityThread.main(ActivityThread.java:3683)
java.lang.reflect.Method.invokeNative(Native Method)
java.lang.reflect.Method.invoke(Method.java:507)
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
dalvik.system.NativeStart.main(Native Method)
My exceptions were not consistent (NullPointer, IOException, NetworkonMainThread). I added the posted code to an AsyncTask. Unfortunately, I'm not getting output on my Logcat anymore, but when debugging it kicks me to:
Class File Editor
Source not found
The JAR file C:/users..... has no source attachment. You can attach the source...
// Compiled from ThreadPoolExecutor.java (version 1.5 : 49.0, super bit)
public class java.util.concurrent.ThreadPoolExecutor extends java.util.concurrent.AbstractExecutorService {
// Method descriptor #17 (IIJLjava/util/concurrent/TimeUnit;Ljava/util/concurrent/BlockingQueue;)V
// Signature: (IIJLjava/util/concurrent/TimeUnit;Ljava/util/concurrent/BlockingQueue<Ljava/lang/Runnable;>;)V
// Stack: 3, Locals: 7
public ThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, java.util.concurrent.TimeUnit unit, java.util.concurrent.BlockingQueue workQueue);
0 aload_0 [this]
1 invokespecial java.util.concurrent.AbstractExecutorService() [1]
4 new java.lang.RuntimeException [2]
7 dup
...

Did you make sure that your app has permission to access the Internet?
See: https://stackoverflow.com/a/442590/81821

After HTTP GET request, the resulting string is cut-off - content has been consumed

I'm making a http get request like this:
try {
HttpClient client = new DefaultHttpClient();
String getURL = "http://busspur02.aseag.de/bs.exe?SID=5FC39&ScreenX=1440&ScreenY=900&CMD=CR&Karten=true&DatumT="+day+"&DatumM="+month+"&DatumJ="+year+"&ZeitH="+hour+"&ZeitM="+min+"&Intervall=60&Suchen=(S)uchen&GT0=Aachen&T0=H&HT0="+start_from+"&GT1=Aachen&T0=H&HT1="+destination+"";
HttpGet get = new HttpGet(getURL);
HttpResponse responseGet = client.execute(get);
HttpEntity resEntityGet = responseGet.getEntity();
if (resEntityGet != null) {
//do something with the response
Log.i("GET RESPONSE",EntityUtils.toString(resEntityGet));
}
...
} catch (...) {
...
}
It all works well... the only problem: the output from Log.i is cut-off... It's not the complete html page. If I make the same request in a browser, I get 3x the output in opposition to making the request in the emulator and using the above code.... what's wrong?
ERROR:
04-30 14:01:01.287: WARN/System.err(1088): java.lang.IllegalStateException: Content has been consumed
04-30 14:01:01.297: WARN/System.err(1088): at org.apache.http.entity.BasicHttpEntity.getContent(BasicHttpEntity.java:84)
04-30 14:01:01.297: WARN/System.err(1088): at org.apache.http.conn.BasicManagedEntity.getContent(BasicManagedEntity.java:100)
04-30 14:01:01.307: WARN/System.err(1088): at org.apache.http.util.EntityUtils.toString(EntityUtils.java:112)
04-30 14:01:01.307: WARN/System.err(1088): at org.apache.http.util.EntityUtils.toString(EntityUtils.java:146)
04-30 14:01:01.307: WARN/System.err(1088): at mjb.project.AVV.ParseHTML.start(ParseHTML.java:177)
04-30 14:01:01.307: WARN/System.err(1088): at mjb.project.AVV.ParseHTML.onCreate(ParseHTML.java:139)
04-30 14:01:01.307: WARN/System.err(1088): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-30 14:01:01.327: WARN/System.err(1088): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
04-30 14:01:01.327: WARN/System.err(1088): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
04-30 14:01:01.327: WARN/System.err(1088): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
04-30 14:01:01.347: WARN/System.err(1088): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
04-30 14:01:01.347: WARN/System.err(1088): at android.os.Handler.dispatchMessage(Handler.java:99)
04-30 14:01:01.347: WARN/System.err(1088): at android.os.Looper.loop(Looper.java:123)
04-30 14:01:01.347: WARN/System.err(1088): at android.app.ActivityThread.main(ActivityThread.java:4363)
04-30 14:01:01.347: WARN/System.err(1088): at java.lang.reflect.Method.invokeNative(Native Method)
04-30 14:01:01.357: WARN/System.err(1088): at java.lang.reflect.Method.invoke(Method.java:521)
04-30 14:01:01.357: WARN/System.err(1088): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
04-30 14:01:01.357: WARN/System.err(1088): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
04-30 14:01:01.357: WARN/System.err(1088): at dalvik.system.NativeStart.main(Native Method)

OK I solved it.
As I understand, the content of the entity gets consumed if it's not "used". So I created a new String object with the content of the Entity, so to say a copy instead of a reference to the entity's content.
try {
HttpClient client = new DefaultHttpClient();
String getURL = "http://busspur02.aseag.de/bs.exe?SID=5FC39&ScreenX=1440&ScreenY=900&CMD=CR&DatumT="+day+"&DatumM="+month+"&DatumJ="+year+"&ZeitH="+hour+"&ZeitM="+min+"&Intervall=120&Suchen=(S)uchen&GT0=Aachen&T0=H&HT0="+start_from+"&GT1=Aachen&T0=H&HT1="+destination+"";
HttpGet get = new HttpGet(getURL);
HttpResponse responseGet = client.execute(get);
HttpEntity resEntityGet = responseGet.getEntity();
String sourceString = "";
if (resEntityGet != null) {
try {
dismissDialog();
sourceString= new String(EntityUtils.toString(resEntityGet));
Log.i("GET RESPONSE", sourceString);
} catch (ParseException exc) {
// TODO Auto-generated catch block
exc.printStackTrace();
} catch (IllegalStateException exc) {
// TODO Auto-generated catch block
exc.printStackTrace();
}
...
}
...
} catch(...) {
...
}

DixieFlatline is correct.
With this I get partial output:
Log.v(TAG, "RESPONSE: " + response);
With this I get full output:
for(String line : response.split("\n"))
Log.v(TAG, "LINE: " + line);

I think that Log limits the number of chars to 4070. I tried to display a long string in ddms locgat and i got only 4070 chars.

Great!
By the way, if you are using Eclipse with Debug perspective, at the "Variables" view:
(Window -> Show View -> Variables)
you can right-click on the window, select "Max Length" and insert "0".
This way you can see all the chars (the complete html) in the Variables view.