Erreur dans la boucle de l'analyseur syntaxique

Question

J'essaie d'utiliser un analyseur SAX pour analyser une réponse HTTP. Tout semble fonctionner correctement, sauf que le programme n'entre pas dans ma boucle for. Voici mon code:

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.playerinfo); 

    TableLayout t1 = (TableLayout) findViewById(R.id.myTable); 

    Intent i = getIntent(); 
    Bundle b = i.getExtras(); 
    final String str = b.getString("ARRIVING_FROM"); 

    d=d+""; 
    d = tryLogin(str); 
    System.out.println("Value of D"+d.substring(0, 1)); 

    this.tryLogin(str); 

    final ScoreList scorelist = XMLHandler.scorelist ; 

    id = new TextView[scorelist.getName().size()]; 
    name = new TextView[scorelist.getName().size()]; 

    for (int j = 0; j < scorelist.getName().size(); j++) { 
     TableRow tr = new TableRow(this); 

     id[j]= new TextView(this); 
     id[j].setText(scorelist.getId().get(j)); 
     id[j].setTextColor(Color.WHITE); 
     id[j].setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT)); 
     tr.addView(id[j]); 

     name[j]= new TextView(this); 
     name[j].setText(scorelist.getName().get(j)); 
     name[j].setTextColor(Color.WHITE); 
     name[j].setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT)); 
     tr.addView(name[j]); 

     t1.addView(tr, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT)); 
    } 
} 

protected String tryLogin(String str) { 
    DefaultHttpClient client = new DefaultHttpClient(); 
    HttpPost httppost = new HttpPost("http://ip address/test/players_detail.php?id="+str); 
    List<BasicNameValuePair> nvps = new ArrayList<BasicNameValuePair>(); 
    nvps.add(new BasicNameValuePair("id", str)); 

    try { 
     UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(nvps,HTTP.UTF_8); 
     httppost.setEntity(p_entity); 
     HttpResponse response = client.execute(httppost); 
     Log.v("MyPlayerInfo", response.getStatusLine().toString()); 
     HttpEntity responseEntity = response.getEntity(); 
     InputStream in=responseEntity.getContent(); 
     byte[] bData = new byte[1024]; 
     in.read(bData); 
     System.out.println("In Data"+in.toString()); 
     String st=new String (bData); 
     d=st; 
     System.out.println("Response String from server"+st); 
     Log.v("MyPlayerInfo", "Set response to responseEntity"); 

     SAXParserFactory spf = SAXParserFactory.newInstance(); 
     SAXParser sp = spf.newSAXParser(); 
     XMLReader xr = sp.getXMLReader(); 

     System.out.println("Response from server"+responseEntity); 
     XMLHandler myXMLHandler = new XMLHandler(); 
     xr.setContentHandler(myXMLHandler); 
     xr.parse(retrieveInputStream(responseEntity)); 

     System.out.println("Server Response"+responseEntity); 
     return d; 
    } catch(Exception e) { 
     Log.i("Catch","Exception generate in Post"+e); 
     e.printStackTrace(); 
    } 

    return "0"; 
} 

private InputSource retrieveInputStream(HttpEntity httpEntity) { 
    InputSource insrc = (InputSource) httpEntity; 

    try { 
     insrc = new InputSource(httpEntity.getContent()); 
    } catch (Exception e) {} 

    return insrc; 
} 

Et la réponse est logcat:

04-01 12:04:21.746: ERROR/AndroidRuntime(808): FATAL EXCEPTION: main 
04-01 12:04:21.746: ERROR/AndroidRuntime(808): java.lang.RuntimeException: Unable to start activity ComponentInfo{android.example/android.example.MyPlayerInfo}: java.lang.NullPointerException 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.os.Handler.dispatchMessage(Handler.java:99) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.os.Looper.loop(Looper.java:123) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at java.lang.reflect.Method.invokeNative(Native Method) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at java.lang.reflect.Method.invoke(Method.java:521) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at dalvik.system.NativeStart.main(Native Method) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808): Caused by: java.lang.NullPointerException 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.example.MyPlayerInfo.onCreate(MyPlayerInfo.java:67) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
04-01 12:04:21.746: ERROR/AndroidRuntime(808):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
04-01 12:04:21.756: WARN/ActivityManager(59): Force finishing activity android.example/.MyPlayerInfo 
04-01 12:04:21.766: WARN/ActivityManager(59): Force finishing activity android.example/.MyParsingExample 
04-01 12:04:22.266: WARN/ActivityManager(59): Activity pause timeout for HistoryRecord{43ff6188 android.example/.MyPlayerInfo} 

Answer 1

Bon, alors vous avez un NullPointerException à la ligne 67 de MyPlayerInfo.java. Regardez cette ligne, déterminez pourquoi vous obtenez l'exception et corrigez-la.

Sans savoir quelle ligne est la ligne 67, il est difficile d'aider davantage - que vous avez présenté beaucoup de code à regarder, et nous ne savons pas où il est rupture, mais vous devrait.

(En aparté, vous devriez la fermeture du flux d'entrée dans un bloc finally, et seulement des exceptions plus spécifiques attraper, mais une chose à la fois ...)