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- 04-07 05:19:02.305: E/AndroidRuntime(19599): FATAL EXCEPTION: main
- 04-07 05:19:02.305: E/AndroidRuntime(19599): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.buet_parsing/com.example.buet_parsing.MainActivity}: java.lang.NullPointerException
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.ActivityThread.access$600(ActivityThread.java:141)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.os.Handler.dispatchMessage(Handler.java:99)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.os.Looper.loop(Looper.java:137)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.ActivityThread.main(ActivityThread.java:5041)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at java.lang.reflect.Method.invokeNative(Native Method)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at java.lang.reflect.Method.invoke(Method.java:511)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at dalvik.system.NativeStart.main(Native Method)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): Caused by: java.lang.NullPointerException
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.widget.ArrayAdapter.getCount(ArrayAdapter.java:330)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.widget.ListView.setAdapter(ListView.java:462)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at com.example.buet_parsing.MainActivity.onCreate(MainActivity.java:46)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.Activity.performCreate(Activity.java:5104)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
- 04-07 05:19:02.305: E/AndroidRuntime(19599): ... 11 more
- 04-07 05:19:11.135: I/Process(19599): Sending signal. PID: 19599 SIG: 9
- package com.example.buet_parsing;
- import java.io.BufferedReader;
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.util.ArrayList;
- import java.util.List;
- import org.apache.http.HttpResponse;
- import org.apache.http.HttpStatus;
- 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 org.json.JSONObject;
- import org.w3c.dom.ls.LSInput;
- import android.app.Activity;
- import android.app.AlertDialog;
- import android.app.ListActivity;
- import android.os.AsyncTask;
- import android.os.Bundle;
- import android.util.Log;
- import android.widget.Adapter;
- import android.widget.ArrayAdapter;
- import android.widget.ListView;
- import android.widget.ProgressBar;
- public class MainActivity extends Activity {
- ListView lv;
- CustomAdapter adapter;
- String urlString="http://cricscore-api.appspot.com/csa";
- ArrayList<ListIteam> allNews;
- AlertDialog progressDialog;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- lv=(ListView)findViewById(R.id.list);
- adapter=new CustomAdapter(this, allNews);
- lv.setAdapter(adapter);
- DownloadTask download=new DownloadTask();
- Log.v(getClass().getSimpleName(), "Loading data.......");
- AlertDialog.Builder builder=new AlertDialog.Builder(this);
- builder.setMessage("Loading data..");
- builder.setView(new ProgressBar(this));
- progressDialog=builder.create();
- progressDialog.show();
- download.execute();
- }
- class DownloadTask extends AsyncTask<Void, Void, String>{
- @Override
- protected String doInBackground(Void... params) {
- String result=null;
- try {
- HttpClient client=new DefaultHttpClient();
- HttpGet get=new HttpGet(urlString);
- HttpResponse response=client.execute(get);
- if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
- InputStream in=response.getEntity().getContent();
- BufferedReader reader=new BufferedReader(new InputStreamReader(in));
- String line=reader.readLine();
- Log.v(getClass().getSimpleName(), line);
- return line;
- }
- } catch (Exception e) {
- e.printStackTrace();
- return null;
- }
- return result;
- }
- @Override
- protected void onPostExecute(String result) {
- progressDialog.dismiss();
- try {
- JSONArray array=new JSONArray(result);
- for (int i = 0; i < result.length(); i++) {
- JSONObject object=array.getJSONObject(i);
- String team1=object.getString("t1");
- String team2=object.getString("t2");
- ListIteam ls=new ListIteam(team1, team2);
- allNews.add(ls);
- adapter.notifyDataSetChanged();
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- }
- }
- package com.example.buet_parsing;
- import java.util.ArrayList;
- import java.util.List;
- import android.app.Activity;
- import android.content.Context;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.ArrayAdapter;
- import android.widget.TextView;
- public class CustomAdapter extends ArrayAdapter<ListIteam>{
- Activity context;
- ArrayList<ListIteam> ls;
- public CustomAdapter(Activity context, ArrayList<ListIteam> ls) {
- super(context, R.layout.adapter_layout, ls);
- this.context=context;
- this.ls=ls;
- }
- @Override
- public View getView(int position, View convertView, ViewGroup parent) {
- View view=convertView;
- LayoutInflater inflat=context.getLayoutInflater();
- view=inflat.inflate(R.layout.adapter_layout, null, false);
- TextView txtTeam1=(TextView)view.findViewById(R.id.team1);
- TextView txtTeam2=(TextView)view.findViewById(R.id.team2);
- ListIteam l=ls.get(position);
- txtTeam1.setText(l.getTeam1());
- txtTeam2.setText(l.getTeam2());
- return view;
- }
- }
- package com.example.buet_parsing;
- public class ListIteam {
- String team1;
- String team2;
- public ListIteam(String team1, String team2) {
- super();
- this.team1 = team1;
- this.team2 = team2;
- }
- public String getTeam1() {
- return team1;
- }
- public void setTeam1(String team1) {
- this.team1 = team1;
- }
- public String getTeam2() {
- return team2;
- }
- public void setTeam2(String team2) {
- this.team2 = team2;
- }
- @Override
- public String toString() {
- return "ListIteam [team1=" + team1 + ", team2=" + team2 + "]";
- }
- }
- adapter=new CustomAdapter(this, allNews);
- lv.setAdapter(adapter);
- @Override
- protected void onPostExecute(String result) {
- // TODO Auto-generated method stub
- super.onPostExecute(result);
- adapter=new CustomAdapter(this, allNews);
- lv.setAdapter(adapter);
- }
- allNews = new ArrayList<ListIteam>():
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