I am working with reverse geocoding in Android. My code successfully worked until yesterday, but now it stopped working on my Android device (samsung S2). But it works in the emulator. When I compile on the device it shows the following errors in logcat:
02-28 12:56:22.800: W/System.err(9048): java.io.IOException: Service not Available
02-28 12:56:22.815: W/System.err(9048): at android.location.Geocoder.getFromLocation(Geocoder.java:136)
02-28 12:56:22.815: W/System.err(9048): at in.wptrafficanalyzer.locationreversegeocoding.MainActivity$ReverseGeocodingTask.doInBackground(MainActivity.java:154)
02-28 12:56:22.830: W/System.err(9048): at in.wptrafficanalyzer.locationreversegeocoding.MainActivity$ReverseGeocodingTask.doInBackground(MainActivity.java:1)
02-28 12:56:22.830: W/System.err(9048): at android.os.AsyncTask$2.call(AsyncTask.java:264)
02-28 12:56:22.830: W/System.err(9048): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
02-28 12:56:22.835: W/System.err(9048): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
02-28 12:56:22.835: W/System.err(9048): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
02-28 12:56:22.835: W/System.err(9048): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-28 12:56:22.845: W/System.err(9048): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-28 12:56:22.845: W/System.err(9048): at java.lang.Thread.run(Thread.java:856)
This is a known issue. A possible workaround is that you have to reboot the device. I was told that I works then again.
It happens caused by multiple reasons. I've had some devices that always did it, while the same code worked fine in others.
A nice workaround is catching the IOException and firing the google maps web api instead;
public static JSONObject getLocationInfo(String address) {
HttpGet httpGet = new HttpGet("http://maps.google.com/maps/api/geocode/json?address="
+ address + "&ka&sensor=false");
HttpClient client = new DefaultHttpClient();
HttpResponse response;
StringBuilder stringBuilder = new StringBuilder();
try {
response = client.execute(httpGet);
HttpEntity entity = response.getEntity();
InputStream stream = entity.getContent();
int b;
while ((b = stream.read()) != -1) {
stringBuilder.append((char) b);
}
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
JSONObject jsonObject = new JSONObject();
try {
jsonObject = new JSONObject(stringBuilder.toString());
} catch (JSONException e) {
e.printStackTrace();
}
return jsonObject;
}
The returned value you can extract like this;
lon = ((JSONArray) jsonObject.get("results")).getJSONObject(0)
.getJSONObject("geometry").getJSONObject("location").getDouble("lng");
lat = ((JSONArray) jsonObject.get("results")).getJSONObject(0)
.getJSONObject("geometry").getJSONObject("location").getDouble("lat");
it is working now........... use this trick.
simply edit the project.properties
# Project target
target=Google Inc.:Google APIs:16
The reason is that the Geocoder class is present in the core Android framework, but depends on code contributed by the Google APIs to function properly. Even if your AVD includes the Google APIs, your project still needs to be built against that specific build target.
Related
In my android app I've used a async task to handle my internet request. I achieved that by using the okhttp library, which makes it easy to make internet requests. I have a lot of the code surrounded my try/catch statements, but they somehow do not trigger when there is an unhandled exception so the app crashes. That only happens when the internet is disconnected or is slow in areas.
I've looked for similar posts, but found out that people who had the same problems didn't try/catch, so the exceptions weren't handled
I've also tried to make a checker for the internet accessibility, but that didn't work out too well, because i would much rather do it with clean try-catching.
private class prenesi extends AsyncTask<String, Void, String>
{
String odgovor = null;
protected String doInBackground(String... params)
{
OkHttpClient client = new OkHttpClient();
RequestBody vsebina = new FormEncodingBuilder()
.add("kraj", params[0])
.build();
Request request = new Request.Builder()
.url("http://mypage.com/login.php")
.post(vsebina)
.build();
Response response = null;
try
{
response = client.newCall(request).execute();
}
catch (IOException e)
{
e.printStackTrace();
}
if (!response.isSuccessful())
{
odgovor = "Napaka.";
}
else
try
{
odgovor = response.body().string();
}
catch (IOException e)
{
e.printStackTrace();
}
return odgovor;
}
}
The devconsole says the problem is in the doInBackground() and i guess it caused because the null pointer exception, though I'm not entirely sure what that means:
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:299)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
Caused by: java.lang.NullPointerException
Could somebody point me towards the flaw please. I'm stuck with this.
All the help will be very appreciated, hope to solve this problem soon.
Thanks for contributing.
It seems that you forgot to initialize your String value. Run it by first setting String odgovor=""; instead of String odgovor= null;
Try modifying the code to this
String odgovor="";
try{
response = client.newCall(request).execute();
if (!response.isSuccessful()) {
odgovor = "Napaka.";
} else{
odgovor = response.body().string();
}} catch (IOException e) {
e.printStackTrace();
}
Seems the problem in the end was with the isSuccessul method, which was a bit cheesy, idk why, but instead of it i used if(response == null).
I want to upload an image to server but i need to send 2 more things in order to connect with the server any HELP cause im really stuck on this one.
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
// MultipartEntity entity = new MultipartEntity();
try {
File file = new File(path);
// Adding file data to http body
builder.addPart("image", new FileBody(file));
// Extra parameters if you want to pass to server
builder.addTextBody("confid", name);
builder.addTextBody("udid", id);
entity = builder.build();
httppost.setEntity(entity);
// Making server call
HttpResponse response = httpclient.execute(httppost);
HttpEntity r_entity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode == 200) {
// Server response
responseString = EntityUtils.toString(r_entity);
} else {
responseString = "Error occurred! Http Status Code: "
+ statusCode;
}
} catch (ClientProtocolException e) {
responseString = e.toString();
} catch (IOException e) {
responseString = e.toString();
}
return responseString;
}
Here are the errors from android Studio logcat
0-08 12:06:01.216 8616-8787/? E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #2
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:299)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
Caused by: java.lang.NoClassDefFoundError: org.apache.http.entity.mime.MultipartEntityBuilder
at com.example.oleg.myapplication.MainActivity$1.uploadFile(MainActivity.java:305)
at com.example.oleg.myapplication.MainActivity$1.doInBackground(MainActivity.java:285) at com.example.oleg.myapplication.MainActivity$1.doInBackground(MainActivity.java:279) at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
I recently uploaded an update of my app to Google Play. When trying it out, I get an error when clicking on a manually added banner (e.g. not AdMob or anything like that). The click is setting of an AsyncTask that sends data to a php-script using POST. I use ProGuard so when I send the error report to myself I am only able to see the method in which the error is caused: doInBackground. I am also able to see that it is a NullPointerException. The strange thing is, when I run the app on my device from my computer using Eclipse, the error doesn't occur, so I can't really find what line is causing the NullPointerException. It has worked perfectly in previous versions of my app, and I haven't made any changes to this code. And when I look through the method doInBackground, I can't find any place where a NullPointerException might occur.
Here is the error message from my developers console, this is proguarded though:
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:278)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
Caused by: java.lang.NullPointerException
at se.nollekollen.main.d.a(Unknown Source)
at se.nollekollen.main.d.doInBackground(Unknown Source)
at android.os.AsyncTask$2.call(AsyncTask.java:264)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
... 5 more
And here is my doInBackground:
#Override
protected String doInBackground(String... arg0) {
String url_stats = "http://xxxxx.xx/statistik/sendStatistics_click.php";
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("activity", getClass().getEnclosingClass().getName().substring(20)));
params.add(new BasicNameValuePair("section", SECTION));
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url_stats);
try {
httpPost.setEntity(new UrlEncodedFormEntity(params));
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
try {
httpClient.execute(httpPost);
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
The only thing that could be null here is actually "SECTION", but that wouldn't cause a NullPointerException since the value can be null when creating a new BasicNameValuePair(key, value).
Can anyone find what could cause the NullPointerException? And how is it possible that this ONLY occurs when the app is downloaded from Google Play, and not when run from the computer?
I am using the below code to fetch xml file from the server and due to heavy and large xml file, it got crashed and showing Out of memory Issue.
public class Connect {
static BufferedReader in=null;
String result=null;
Context context;
//Establish connection with web server
public String HTTPConnect(String uri1,List<NameValuePair> list,Context context)
{
this.context=context;
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(uri1);
if(list!=null)
{
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(list);
httpPost.setEntity(formEntity);
}
HttpResponse httpResponse = httpClient.execute(httpPost);
in = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
long heapSize = Runtime.getRuntime().totalMemory();
if(in!=null)
{
while ((line = in.readLine()) != null) {//crasheg here
sb.append(line + NL);
}
in.close();
}
result = sb.toString();
}
catch(UnsupportedEncodingException e)
{
String err = (e.getMessage()==null)?"Cant connect to server":e.getMessage();
ShowDialog();
}
catch (MalformedURLException e) {
String err = (e.getMessage()==null)?"Malformed Exception":e.getMessage();
ShowDialog();
}
catch(Exception ex)
{
String err = (ex.getMessage()==null)?"NetworkConnectionException":ex.getMessage();
ShowDialog();
}
finally {
if (in != null) {
try {
in.close();
} catch (Exception ex) {
String err = (ex.getMessage()==null)?"Excepion":ex.getMessage();
ex.printStackTrace();
}
}
}
return result;
}
I know that that I am copying the whole XML in String and due to heavy file, It gor crashing. It is working fine in small size of XML file, but what are the alternative for large xml file. I am uing SAX parser for parsing this xml file.
[EDIT]
Below is the logcat:
FATAL EXCEPTION: AsyncTask #4
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:200)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
at java.lang.Thread.run(Thread.java:1096)
Caused by: java.lang.OutOfMemoryError
java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:97)
java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:136)
java.lang.StringBuilder.append(StringBuilder.java:272)
java.io.BufferedReader.readLine(BufferedReader.java:452)
com.kxs.appitize.Connect.HTTPConnect(Connect.java:56)
com.kxs.appitize.ListRestaurants$Asyn_rest.doInBackground(ListRestaurants.java:168)
com.kxs.appitize.ListRestaurants$Asyn_rest.doInBackground(ListRestaurants.java:1)
01-at android.os.AsyncTask$2.call(AsyncTask.java:185)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
Activity com.kxs.appitize.TabsMainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView#44f4fb28 that was originally added here
android.view.WindowLeaked: Activity com.kxs.appitize.TabsMainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView#44f4fb28 that was originally added here
at android.view.ViewRoot.<init>(ViewRoot.java:247)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
at android.view.Window$LocalWindowManager.addView(Window.java:424)
at android.app.Dialog.show(Dialog.java:241)
at com.kxs.appitize.ListRestaurants$Asyn_rest.onPreExecute(ListRestaurants.java:156)
at android.os.AsyncTask.execute(AsyncTask.java:391)
at com.kxs.appitize.ListRestaurants.onCreate(ListRestaurants.java:133)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
at android.app.ActivityThread.startActivityNow(ActivityThread.java:2503)
at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:127)
at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:339)
at com.kxs.appitize.TabGroupActivity.startChildActivity(TabGroupActivity.java:72)
at com.kxs.appitize.ListCategories$1.onClick(ListCategories.java:109)
at android.view.View.performClick(View.java:2408)
at android.view.View$PerformClick.run(View.java:8816)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
copying the whole XML in String and due to heavy file
Bad idea. First you need to cache the xml in a temporary directory. It should never be in the RAM.
Once you do that use SAX to parse the file. During parsing try not to keep the whole structure in the RAM, instead parse in bite sized chunks.
Try to use inputStream to parse XML. The inputStrem does not increase Android stack size and it's prevent possibles OOM with large String. I have the same things with large JSON and now, i use Jackson to parse JSON directly from Stream.
You can find equivalent library for parsing XML.
I am reading the youtube response in Stream and converting it to String. using the below code:
URL: http://gdata.youtube.com/feeds/api/users/cnn/uploads?&v=2&max-results=25&alt=json
private String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
This code is working in fine in all devices except Android 4.0 devices. I am getting the below logcat:
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:278)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
Caused by: java.lang.OutOfMemoryError
at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:94)
at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:145)
at java.lang.StringBuilder.append(StringBuilder.java:216)
at com.android.mypack.MyApplications.convertStreamToString(MyApplications.java:959)
at com.android.mypack.MyApplications.access$61(MyApplications.java:951)
at com.android.mypack.MyApplications$YoutubeTask.doInBackground(MyApplications.java:2303)
at com.android.mypack.MyApplications$YoutubeTask.doInBackground(MyApplications.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:264)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
... 5 more
java.lang.OutOfMemoryError
at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:94)
at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:145)
at java.lang.StringBuilder.append(StringBuilder.java:216)
at com.android.mypack.MyApplications.convertStreamToString(MyApplications.java:959)
at com.android.mypack.MyApplications.access$61(MyApplications.java:951)
at com.android.mypack.MyApplications$YoutubeTask.doInBackground(MyApplications.java:2303)
at com.android.mypack.MyApplications$YoutubeTask.doInBackground(MyApplications.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:264)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
Please help me to overcome this error.
Thanks in Advance.
Well, OutOfMemoryErrors are coming obviously when the virtual machine runs out of memory. The important point here is that the exact stack trace might not be informative, because it could happen that another thread uses all of the memory. Or something memory-consuming happened on this thread before this code, and this code was only the "last straw". This URL certainly does not contain too many bytes, I think the problem is in another place.
You could try a memory analyzer:
Android ==> Memory Analysing ==> Eclipse memory analyzer?