Try with the debugger, maybe you can find a clue.
On Aug 11, 2011 5:00 PM, "Anoop Namdev" <nam...@gowebbaby.com> wrote:
> Hi,
> I'm trying to retrieve twitter Json feed and display in list view.
> I've created service to retrieve it.
> When I call service in List activity service object gives null value.
>
> Service easily fetch data from twitter but service not able to return
> data to client(List activity).
>
> In log cat no error occurred. What's the problem with my code?
>
> ParseJSON.java(service code)
>
>
>
> package gowebbaby.com.wp;
>
> import java.io.BufferedReader;
> import java.io.IOException;
> import java.io.InputStream;
> import java.io.InputStreamReader;
> import java.util.ArrayList;
> import java.util.List;
> import java.util.Timer;
> import java.util.TimerTask;
>
> import org.apache.http.HttpEntity;
> import org.apache.http.HttpResponse;
> import org.apache.http.StatusLine;
> import org.apache.http.client.ClientProtocolException;
> import org.apache.http.client.HttpClient;
> import org.apache.http.client.methods.HttpGet;
> import org.apache.http.impl.client.DefaultHttpClient;
> import org.json.JSONArray;
>
> import android.app.Service;
> import android.content.Intent;
> import android.os.Binder;
> import android.os.IBinder;
> import android.util.Log;
>
>
> public class ParseJSON extends Service {
>
> public final static String KEY_ROWID = null;
> private Timer timer = new Timer();
> private static final long UPDATE_INTERVAL = 50000;
> private final IBinder mBinder = new MyBinder();
> private ArrayList<String> list = new ArrayList<String>();
> @Override
> public void onCreate() {
> super.onCreate();
> checkNewPosts();
> }
>
> private void checkNewPosts() {
> timer.scheduleAtFixedRate(new TimerTask() {
> @Override
> public void run() {
> String readWebservice = readWebservice();
> try {
> JSONArray jsonArray = new JSONArray(readWebservice);
> Log.i(ParseJSON.class.getName(), "Number of Post " +
> jsonArray.length());
>
> for(int i = 0 ; i < jsonArray.length(); i++) {
> list.add(jsonArray.get(i).toString());
> //Log.i(ParseJSON.class.getName(), "Data " +
> jsonArray.get(i).toString());
> }
>
> } catch (Exception e) {
> e.printStackTrace();
> }
>
> }
> },0, UPDATE_INTERVAL );
>
> }
>
> protected String readWebservice() {
> StringBuilder builder = new StringBuilder();
> HttpClient client = new DefaultHttpClient();
> HttpGet httpGet = new HttpGet("http://twitter.com/statuses/
> user_timeline/gowebbaby.json");
>
> try {
> HttpResponse response = client.execute(httpGet);
> StatusLine statusLine = response.getStatusLine();
> int statusCode = statusLine.getStatusCode();
>
> if(statusCode == 200) {
> HttpEntity entity = response.getEntity();
> InputStream content = entity.getContent();
> BufferedReader reader = new BufferedReader(new
> InputStreamReader(content));
>
> String line;
> while((line = reader.readLine()) != null) {
> builder.append(line);
> }
> } else {
> Log.i(ParseJSON.class.toString(), "Failed to download file");
> }
>
> } catch (ClientProtocolException e) {
> e.printStackTrace();
> } catch (IOException e) {
> e.printStackTrace();
> }
>
> return builder.toString();
> }
>
> @Override
> public void onDestroy() {
> super.onDestroy();
> if(timer != null) {
> timer.cancel();
> }
> Log.i(getClass().getSimpleName(), "Timer Stopped.");
> }
>
> public List<String> getPostList() {
> return list;
> }
>
> public IBinder onBind(Intent intent) {
> //Log.i(getClass().getSimpleName(), "onBind Called");
> return mBinder;
> }
>
> public class MyBinder extends Binder {
> ParseJSON getService() {
> return ParseJSON.this;
> }
> }
> }
>
> List Activity Code
>
> package gowebbaby.com.wp;
>
> import gowebbaby.com.wp.ParseJSON.MyBinder;
>
> import java.util.ArrayList;
> import java.util.List;
>
> import android.app.ListActivity;
> import android.content.ComponentName;
> import android.content.Context;
> import android.content.Intent;
> import android.content.ServiceConnection;
> import android.os.Bundle;
> import android.os.IBinder;
> import android.view.View;
> import android.widget.ArrayAdapter;
> import android.widget.ListView;
> import android.widget.Toast;
>
>
> public class WordpressPostList extends ListActivity {
> /** Called when the activity is first created. */
> private ParseJSON s;
> private ArrayList<String> values;
> private ArrayAdapter<String> adapter;
> public static final int POST_DETAIL = 1;
>
> @Override
> public void onCreate(Bundle savedInstanceState) {
>
> super.onCreate(savedInstanceState);
> setContentView(R.layout.post_list);
> doBindService();
> //Log.i(WordpressPostList.class.getName(), "Post " +
> s.getPostList().get(0));
> filldata();
> registerForContextMenu(getListView());
> }
>
> @Override
> protected void onListItemClick(ListView l, View v, int position, long
> id) {
> super.onListItemClick(l, v, position, id);
> Intent i = new Intent(this, WordpressPostDetail.class);
> i.putExtra(ParseJSON.KEY_ROWID, id);
> startActivityForResult(i, POST_DETAIL);
> }
>
> private void filldata() {
> if(s != null) {
> List<String> postList = s.getPostList();
> values.clear();
> values.addAll(postList);
> adapter = new
> ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,values);
> adapter.notifyDataSetChanged();
> Toast.makeText(WordpressPostList.this, postList.get(0),
> Toast.LENGTH_LONG).show();
> }
> }
>
> void doBindService() {
> bindService(new Intent(this, ParseJSON.class), mConnection,
> Context.BIND_AUTO_CREATE);
> }
>
> private ServiceConnection mConnection = new ServiceConnection() {
>
> @Override
> public void onServiceConnected(ComponentName className, IBinder
> service) {
> MyBinder binder = (MyBinder) service;
> s = binder.getService();
> //s = ((ParseJSON.MyBinder) service).getService();
> Toast.makeText(WordpressPostList.this, "connected",
> Toast.LENGTH_LONG).show();
> }
>
> @Override
> public void onServiceDisconnected(ComponentName className) {
> s = null;
> }
>
>
> };
> }
>
> Here is Log cat messages.
>
> 08-11 19:18:35.772: DEBUG/AndroidRuntime(1526): >>>>>>>>>>>>>>
> AndroidRuntime START <<<<<<<<<<<<<<
> 08-11 19:18:35.781: DEBUG/AndroidRuntime(1526): CheckJNI is ON
> 08-11 19:18:35.951: DEBUG/AndroidRuntime(1526): --- registering native
> functions ---
> 08-11 19:18:36.252: DEBUG/ddm-heap(1526): Got feature list request
> 08-11 19:18:36.581: DEBUG/PackageParser(52): Scanning package: /data/
> app/vmdl30779.tmp
> 08-11 19:18:36.671: INFO/PackageManager(52): Removing non-system
> package:gowebbaby.com.wp
> 08-11 19:18:36.671: DEBUG/PackageManager(52): Removing package
> gowebbaby.com.wp
> 08-11 19:18:36.671: DEBUG/PackageManager(52): Services:
> gowebbaby.com.wp.ParseJSON
> 08-11 19:18:36.671: DEBUG/PackageManager(52): Activities:
> gowebbaby.com.wp.WordpressPostList
> gowebbaby.com.wp.WordpressPostDetail
> 08-11 19:18:36.751: DEBUG/PackageManager(52): Scanning package
> gowebbaby.com.wp
> 08-11 19:18:36.751: INFO/PackageManager(52): /data/app/vmdl30779.tmp
> changed; unpacking
> 08-11 19:18:36.762: DEBUG/installd(32): DexInv: --- BEGIN '/data/app/
> vmdl30779.tmp' ---
> 08-11 19:18:37.001: DEBUG/dalvikvm(1532): DexOpt: load 37ms, verify
> 108ms, opt 4ms
> 08-11 19:18:37.011: DEBUG/installd(32): DexInv: --- END '/data/app/
> vmdl30779.tmp' (success) ---
> 08-11 19:18:37.011: DEBUG/PackageManager(52): Services:
> gowebbaby.com.wp.ParseJSON
> 08-11 19:18:37.011: DEBUG/PackageManager(52): Activities:
> gowebbaby.com.wp.WordpressPostList
> gowebbaby.com.wp.WordpressPostDetail
> 08-11 19:18:37.031: DEBUG/ActivityManager(52): Uninstalling process
> gowebbaby.com.wp
> 08-11 19:18:37.101: INFO/installd(32): move /data/dalvik-cache/
> data@a...@vmdl30779.tmp@classes.dex -> /data/dalvik-cache/
> data@a...@gowebbaby.com.wp.apk@classes.dex
> 08-11 19:18:37.101: DEBUG/PackageManager(52): New package installed
> in /data/app/gowebbaby.com.wp.apk
> 08-11 19:18:37.201: DEBUG/AndroidRuntime(1526): Shutting down VM
> 08-11 19:18:37.201: DEBUG/dalvikvm(1526): DestroyJavaVM waiting for
> non-daemon threads to exit
> 08-11 19:18:37.211: DEBUG/dalvikvm(1526): DestroyJavaVM shutting VM
> down
> 08-11 19:18:37.211: DEBUG/dalvikvm(1526): HeapWorker thread shutting
> down
> 08-11 19:18:37.211: DEBUG/dalvikvm(1526): HeapWorker thread has shut
> down
> 08-11 19:18:37.211: DEBUG/jdwp(1526): JDWP shutting down net...
> 08-11 19:18:37.211: INFO/dalvikvm(1526): Debugger has detached; object
> registry had 1 entries
> 08-11 19:18:37.224: DEBUG/dalvikvm(1526): VM cleaning up
> 08-11 19:18:37.231: DEBUG/dalvikvm(1526): LinearAlloc 0x0 used 623916
> of 5242880 (11%)
> 08-11 19:18:37.261: INFO/dalvikvm(1526): JNI: AttachCurrentThread
> (from ???.???)
> 08-11 19:18:37.261: ERROR/AndroidRuntime(1526): ERROR: thread attach
> failed
> 08-11 19:18:37.261: DEBUG/ActivityManager(52): Uninstalling process
> gowebbaby.com.wp
> 08-11 19:18:37.362: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f0700e5
> 08-11 19:18:37.362: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f020031
> 08-11 19:18:37.362: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f020030
> 08-11 19:18:37.362: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f050000
> 08-11 19:18:37.381: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f060000
> 08-11 19:18:37.381: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f060001
> 08-11 19:18:37.582: DEBUG/dalvikvm(99): GC freed 137 objects / 5448
> bytes in 202ms
> 08-11 19:18:37.721: DEBUG/dalvikvm(52): GC freed 9914 objects / 634248
> bytes in 220ms
> 08-11 19:18:37.791: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f0700e5
> 08-11 19:18:37.791: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f020031
> 08-11 19:18:37.791: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f020030
> 08-11 19:18:37.791: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f050000
> 08-11 19:18:38.071: DEBUG/dalvikvm(52): GC freed 1469 objects / 66376
> bytes in 276ms
> 08-11 19:18:38.082: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f060000
> 08-11 19:18:38.101: WARN/ResourceType(52): Resources don't contain
> package for resource number 0x7f060001
> 08-11 19:18:38.521: DEBUG/AndroidRuntime(1537): >>>>>>>>>>>>>>
> AndroidRuntime START <<<<<<<<<<<<<<
> 08-11 19:18:38.521: DEBUG/AndroidRuntime(1537): CheckJNI is ON
> 08-11 19:18:38.911: DEBUG/AndroidRuntime(1537): --- registering native
> functions ---
> 08-11 19:18:39.211: DEBUG/ddm-heap(1537): Got feature list request
> 08-11 19:18:39.631: INFO/ActivityManager(52): Starting activity:
> Intent { act=android.intent.action.MAIN
> cat=[android.intent.category.LAUNCHER] flg=0x10000000
> cmp=gowebbaby.com.wp/.WordpressPostList }
> 08-11 19:18:39.672: INFO/ActivityManager(52): Start proc
> gowebbaby.com.wp for activity gowebbaby.com.wp/.WordpressPostList:
> pid=1545 uid=10028 gids={3003}
> 08-11 19:18:39.681: DEBUG/AndroidRuntime(1537): Shutting down VM
> 08-11 19:18:39.691: DEBUG/dalvikvm(1537): DestroyJavaVM waiting for
> non-daemon threads to exit
> 08-11 19:18:39.691: DEBUG/dalvikvm(1537): DestroyJavaVM shutting VM
> down
> 08-11 19:18:39.691: DEBUG/dalvikvm(1537): HeapWorker thread shutting
> down
> 08-11 19:18:39.722: DEBUG/dalvikvm(1537): HeapWorker thread has shut
> down
> 08-11 19:18:39.722: ERROR/AndroidRuntime(1537): ERROR: thread attach
> failed
> 08-11 19:18:39.722: DEBUG/jdwp(1537): JDWP shutting down net...
> 08-11 19:18:39.731: INFO/dalvikvm(1537): Debugger has detached; object
> registry had 1 entries
> 08-11 19:18:39.741: DEBUG/dalvikvm(1537): VM cleaning up
> 08-11 19:18:39.771: DEBUG/dalvikvm(1537): LinearAlloc 0x0 used 639500
> of 5242880 (12%)
> 08-11 19:18:39.901: DEBUG/ddm-heap(1545): Got feature list request
> 08-11 19:18:40.531: INFO/NotificationService(52): enqueueToast
> pkg=gowebbaby.com.wp callback=android.app.ITransientNotification$Stub
> $Proxy@44d4f5e8 duration=1
> 08-11 19:18:40.641: INFO/ActivityManager(52): Displayed activity
> gowebbaby.com.wp/.WordpressPostList: 979 ms (total 524702 ms)
> 08-11 19:18:43.331: DEBUG/dalvikvm(1545): GC freed 3356 objects /
> 233928 bytes in 68ms
> 08-11 19:18:43.331: INFO/global(1545): Default buffer size used in
> BufferedReader constructor. It would be better to be explicit if an 8k-
> char buffer is required.
> 08-11 19:18:43.451: DEBUG/dalvikvm(1545): GC freed 112 objects /
> 295960 bytes in 60ms
> 08-11 19:18:43.771: INFO/gowebbaby.com.wp.ParseJSON(1545): Number of
> Post 20
> 08-11 19:18:43.892: DEBUG/dalvikvm(1545): GC freed 6310 objects /
> 443456 bytes in 75ms
> 08-11 19:18:44.271: DEBUG/dalvikvm(1545): GC freed 4978 objects /
> 826048 bytes in 171ms
> 08-11 19:18:45.931: DEBUG/dalvikvm(99): GC freed 2241 objects / 130240
> bytes in 135ms
> 08-11 19:18:50.971: DEBUG/dalvikvm(225): GC freed 43 objects / 2056
> bytes in 138ms
>
>
>
> Thanks
>
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