Android的Asynctask不工作Prorperly不給數據或某些時候失敗

Question

我想加載數據使用JSON解析在asynctask但沒有正確加載 有時不完整的數據有時被稱爲android.os.main線程我被試過很多次，但還是我得到的問題 我這裏puting我的代碼& logcat的

這裏是我的主類

HomeACtivity.java

class HomeACtivity extends Activity 
{ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
{ 
      new FlightListBack.execute(""); 
    } 
} 


public class FlightListBack extends AsyncTask<String, Integer, ArrayList<HashMap<String,String>>> 

{ 

ArrayList<String> airportList = new ArrayList<String>(); 
final JsonParser jparser= new JsonParser(); 
final ArrayList<HashMap<String, String>> spinnerAirportList = new ArrayList<HashMap<String, String>>(); 

String airporturl="http://api.flightstats.com/flex/airports/rest/v1/json/withinRadius/-74.0063/40.7141/100?appId=4dde11f5&appKey=6b80a6ed5d82c8f0b28dadb14e81bfcd"; 
String spinnerstringfunction; 


List<String> spinnercityList= new ArrayList<String>(); 
final List<String> spinnerAirportNameList= new ArrayList<String>(); 
JSONArray sjairport; 



@Override 
protected ArrayList<HashMap<String,String>> doInBackground(
     String... params) { 

    spinnerstringfunction=jparser.getJSONFromUrl(airporturl); 

    Log.e("SpinnerstringFunction", "size"+spinnerstringfunction); 

    try 
    { 
    // Getting Array of Contacts 
    JSONObject jobject= new JSONObject(spinnerstringfunction);   // Log.e("JOBJECT ","ACTIVITY-->"+jobject.length()); 

    // Airlines Array For Getting Airlines Name 
    sjairport=jobject.getJSONArray(TAG_AIRPORT);   // Log.e("JSONARRAY","AIRLINES"+jairlines.length()); 



    for(int a=0;a<sjairport.length()-30;a++) 
    { 

     HashMap<String, String> spinnermap = new HashMap<String, String>(); 

     String spinnerfs=sjairport.getJSONObject(a).get(TAG_SPINNERFS).toString(); 
     String spinnername=sjairport.getJSONObject(a).get(TAG_SPINNERNAME).toString(); 
     String spinnercity=sjairport.getJSONObject(a).get(TAG_SPINNERCITY).toString(); 

     spinnermap.put(TAG_SPINNERFS, spinnerfs); 
     spinnermap.put(TAG_SPINNERNAME,spinnername); 
     spinnermap.put(TAG_SPINNERCITY,spinnercity); 


     if(!spinnercityList.contains(spinnercity)) 
     { 
      spinnercityList.add(spinnercity); // spinner city list 
     } 

     spinnerAirportList.add(spinnermap); // Array List For all hash map list 
    } 
    Log.e("Spinner Airport List","Complete"+spinnercityList.size()); // 
// Log.e("Airport List","Complete"+spinnerAirportList); // 

    Log.e("Spinner Airport List","Complete"+spinnercityList); 

    } 
    catch (Exception e) 
    { 
     e.printStackTrace(); 
    } 


    return spinnerAirportList; 
} 


protected void onPostExecute(String...result) 
{ 

    try 
    { 



    cityspinner=(Spinner)findViewById(R.id.spinnercity); 
    namespinner=(Spinner)findViewById(R.id.spinnername); 
    timespinner=(Spinner)findViewById(R.id.spinnertime); 
    buttontime=(Button)findViewById(R.id.buttontime); 

     ArrayAdapter<String> spinneradapter= new ArrayAdapter<String>(HomeActivity.this, android.R.layout.simple_spinner_item,spinnercityList); 
     spinneradapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     cityspinner.setAdapter(spinneradapter); 


     // country spinner onclick start 

     cityspinner.setOnItemSelectedListener(new OnItemSelectedListener() { 
      public void onItemSelected(AdapterView<?> arg0, View arg1, 
        int arg2, long arg3) { 

       String cityselected=cityspinner.getSelectedItem().toString(); 
       Log.e("city, selected", "Work"+cityselected); 
       spinnerAirportNameList.clear(); 
       for(int b=0;b<spinnerAirportList.size();b++) 
       { 

        if(cityselected.equals(spinnerAirportList.get(b).get(TAG_SPINNERCITY).toString())) 
        { 
         clear(); 
         String airportname=spinnerAirportList.get(b).get(TAG_SPINNERNAME).toString(); 
         Log.e("country, selected", "Work"+cityselected); 
         Log.e("country Selected Airport","work"+airportname); 
         spinnerAirportNameList.add(airportname); 
        } 
       } 
       Log.e("Spinner Airport NAme list","Work"+spinnerAirportNameList); 

       ArrayAdapter<String> spinnerairportnameadapter= new ArrayAdapter<String>(HomeActivity.this, android.R.layout.simple_spinner_item,spinnerAirportNameList); 
       spinnerairportnameadapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
       namespinner.setAdapter(spinnerairportnameadapter); 

      } 

      public void onNothingSelected(AdapterView<?> arg0) { 

      } 

     }); 

     // country spinner onclick finish 



     // name spinner onclick start 

     namespinner.setOnItemSelectedListener(new OnItemSelectedListener() { 
      public void onItemSelected(AdapterView<?> arg0, View arg1, 
        int arg2, long arg3) { 


       String nameselected=namespinner.getSelectedItem().toString(); 

       Log.e("Name, selected", "Work"+nameselected); 

       for(int c=0;c<spinnerAirportList.size();c++) 
       { 
        if(nameselected.equals(spinnerAirportList.get(c).get(TAG_SPINNERNAME).toString())) 
        { 
         spinnerairportfs=spinnerAirportList.get(c).get(TAG_SPINNERFS).toString(); 
         Log.e("Name, selected", "Work"+nameselected); 
         Log.e("fs Selected Airport","work"+spinnerairportfs); 

        } 
       } 

      } 
      public void onNothingSelected(AdapterView<?> arg0) { 

      } 
     }); 



     //name spinner onclick finish 

     // time spinner 
    String[] flighttime={"12:00AM To 1:00AM" , "1:00AM To 2:00AM" , "2:00AM To 3:00AM", 
          "3:00AM To 4:00AM" , "4:00AM To 5:00AM" , "5:00AM To 6:00AM", 
          "6:00AM To 7:00AM" , "7:00PM To 8:00AM" , "8:00AM To 9:00AM", 
          "9:00AM To 10:00AM" , "10:00PM To 11:00AM" , "11:00AM To 12:00PM", 
          "12:00PM To 1:00PM" , "1:00PM To 2:00PM" , "2:00PM To 3:00PM", 
          "3:00PM To 4:00PM" , "4:00PM To 5:00PM" , "5:00PM To 6:00PM", 
          "6:00PM To 7:00PM" , "7:00PM To 8:00PM" , "8:00PM To 9:00PM", 
          "9:00PM To 10:00PM" , "10:00PM To 11:00PM" , "11:00PM To 12:00PM"}; 

     ArrayAdapter<String>spinnertimeadapter= new ArrayAdapter<String>(HomeActivity.this, android.R.layout.simple_spinner_item,flighttime); 
     spinnertimeadapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     timespinner.setAdapter(spinnertimeadapter); 

     timespinner.setOnItemSelectedListener(new OnItemSelectedListener() { 
      public void onItemSelected(AdapterView<?> arg0, View arg1, 
        int arg2, long arg3) { 

       String timeselected=timespinner.getSelectedItem().toString(); 

       if(timeselected.equals("12:00AM To 1:00AM")) 
       { 

        time="0"; 
       } 
       else if(timeselected.equals("1:00AM To 2:00AM")) 
       { 
        time="1"; 
       } 
       else if(timeselected.equals("2:00AM To 3:00AM")) 
       { 
        time="2"; 
       } 
       else if(timeselected.equals("3:00AM To 4:00AM")) 
       { 
        time="3"; 
       } 
       else if(timeselected.equals("4:00AM To 5:00AM")) 
       { 
        time="4"; 
       } 
       else if(timeselected.equals("5:00AM To 6:00AM")) 
       { 
        time="5"; 
       } 
       else if(timeselected.equals("6:00AM To 7:00AM")) 
       { 
        time="6"; 
       } 
       else if(timeselected.equals("7:00AM To 8:00AM")) 
       { 
        time="7"; 
       } 
       else if(timeselected.equals("8:00AM To 9:00AM")) 
       { 
        time="8"; 
       } 
       else if(timeselected.equals("9:00AM To 10:00AM")) 
       { 
        time="9"; 
       } 
       else if(timeselected.equals("10:00AM To 11:00AM")) 
       { 
        time="10"; 
       } 
       else if(timeselected.equals("11:00AM To 12:00PM")) 
       { 
        time="11"; 
       } 
       else if(timeselected.equals("12:00PM To 1:00PM")) 
       { 
        time="12"; 
       } 
       else if(timeselected.equals("1:00PM To 2:00PM")) 
       { 
        time="13"; 
       } 
       else if(timeselected.equals("2:00PM To 3:00PM")) 
       { 
        time="14"; 
       } 
       else if(timeselected.equals("3:00PM To 4:00PM")) 
       { 
        time="15"; 
       } 
       else if(timeselected.equals("4:00PM To 5:00PM")) 
       { 
        time="16"; 
       } 
       else if(timeselected.equals("5:00PM To 6:00PM")) 
       { 
        time="17"; 
       } 
       else if(timeselected.equals("6:00PM To 7:00PM")) 
       { 
        time="18"; 
       } 
       else if(timeselected.equals("7:00PM To 8:00PM")) 
       { 
        time="19"; 
       } 
       else if(timeselected.equals("8:00PM To 9:00PM")) 
       { 
        time="20"; 
       } 
       else if(timeselected.equals("9:00PM To 10:00PM")) 
       { 
        time="21"; 
       } 
       else if(timeselected.equals("10:00PM To 11:00PM")) 
       { 
        time="22"; 
       } 
       else if(timeselected.equals("11:00PM To 12:00PM")) 
       { 
        time="23"; 
       } 
      } 
      public void onNothingSelected(AdapterView<?> arg0) { 

      } 
     }); 




    } 
    catch (Exception e) 
    { 
     e.printStackTrace(); 
    } 

    buttontime.setOnClickListener(new OnClickListener() { 

     public void onClick(View v) { 


      ArrayList<HashMap<String, String>> flightList = new ArrayList<HashMap<String, String>>(); 




       Calendar now = Calendar.getInstance(); 
       int year = now.get(Calendar.YEAR); 
       Log.e("Year","ss"+year); 
       int month = now.get(Calendar.MONTH); // Note: zero based! 
       Log.e("Month","ss"+month); 

       int day = now.get(Calendar.DAY_OF_MONTH); 
       Log.e("day","ss"+day); 

       Log.e("Time is Selected","time"+time); 

       Log.e("Spinner airoort fs","fs"+spinnerairportfs); 
       String flighturl = "http://api.flightstats.com/flex/flightstatus/rest/v2/json/airport/status/"+spinnerairportfs+"/dep/"+year+"/"+month+"/"+day+"/"+time+"?appId=4dde11f5&appKey=6b80a6ed5d82c8f0b28dadb14e81bfcd&utc=false&numHours=1"; 

       Log.e("Flight url","Work"+flighturl); 
       String jsonstringfunction=jparser.getJSONFromUrl(flighturl); 


       try 
       { 

         JSONObject jobject= new JSONObject(jsonstringfunction); 
         JSONObject appendix = jobject.getJSONObject(TAG_APPENDIX);    Log.e("JOBJECT ","APPENDIX-->"+appendix.length()); 

         // Airlines Array For Getting Airlines Name 
         JSONArray jairlines=appendix.getJSONArray(TAG_AIRLINES);    Log.e("JSONARRAY","AIRLINES"+jairlines.length()); 

         // Airport Array For Getting Airport Name 
         JSONArray jairport=appendix.getJSONArray(TAG_AIRPORT);     Log.e("JSONARRAY","AIRPORT"+jairport.length()); 

         // Flightstatuses Array For Getting INFO 
         JSONArray jflightstatuses=jobject.getJSONArray(TAG_FLIGHTSTATUSES);  Log.e("JSONARRAY","FLIGHTSTATUSES"+jflightstatuses.length()); 

         int i; 
         int j; 
         int k; 
         int m; 
         int n; 


         //****************************** Flightstatuses Array ***************************** 
         for(i=0;i<jflightstatuses.length();i++) 
         { 
          clear(); 
          // creating new HashMap 
          HashMap<String, String> map = new HashMap<String, String>(); 


          arrivalairportfscode=jflightstatuses.getJSONObject(i).get(TAG_ARRIVALAIRPORTFSCODE).toString();  // Log.e("ArrivalAirportFsCode","AirportFSCode"+arrivalairportfscode); 
          carrierfscode=jflightstatuses.getJSONObject(i).get(TAG_CARRIERFSCODE).toString(); 
          flightnumber=jflightstatuses.getJSONObject(i).get(TAG_FLIGHTNUMBER).toString(); 


          //****************************** Airport Array ***************************** 
          // Comparing ArrivalAirportFsCode For Finding The City Name 
          for(j=0;j<jairport.length();j++) 
          { 
           // Airport Fs Code from AirportArray 
           airportfs=jairport.getJSONObject(j).get(TAG_AIRPORTFS).toString(); // Log.e("AIRPORT","FS"+airportfs); 

           // Compare ArrivalAirport FsCode and Airport Fs Code For Finding City Name 
           if(arrivalairportfscode.equalsIgnoreCase(airportfs)) 
           { 
            // City Name From Airport Array 
            city=jairport.getJSONObject(j).get(TAG_AIRPORTCITY).toString();  //Log.e("Airport City","City-->"+city); 
            destination="("+arrivalairportfscode+") "+city;  //Log.e("Destination City","city"+destination); 
            flight=carrierfscode+" "+flightnumber; 

           } 
          } // airport for loop complete 

          map.put(TAG_MDESTINATION, destination); 
          map.put(TAG_MFLIGHT,flight); 


          for(k=0;k<jairlines.length();k++) 
          { 

           // Airport Fs Code from AirportArray 
           airlinesfs=jairlines.getJSONObject(k).get(TAG_AIRLINESFS).toString(); //Log.e("AIRLINES","FS"+airlinesfs); 

           // Compare ArrivalAirport FsCode and Airport Fs Code For Finding City Name 
           if(carrierfscode.equalsIgnoreCase(airlinesfs)) 
           { 
            // Airlines Name From Airlines Array 
            airlinesname=jairlines.getJSONObject(k).get(TAG_AIRLINENAME).toString();  //Log.e("AIRLINES NAME","NAME"+airlinesname); 
            Log.e("--"+flight,"--"+airlinesname); 

           } 

          } // airlines for loop complete 
          map.put(TAG_MAIRLINE,airlinesname); 

          JSONObject joperationaltimes=jflightstatuses.getJSONObject(i).getJSONObject(TAG_OPERATIONALTIMES); 
          Log.e("Operational times","-->"+joperationaltimes); 

          // Schedule Time 

          JSONObject jschedulegatedeparture =new JSONObject(); 
          JSONObject jestimateddeparture =new JSONObject(); 

          for(m=0;m<joperationaltimes.length();m++) 
          { 
           if(joperationaltimes.has(TAG_SCHEDULEDGATEDEPARTURE)) 
           { 

             jschedulegatedeparture=joperationaltimes.getJSONObject(TAG_SCHEDULEDGATEDEPARTURE); 
             schedule=jschedulegatedeparture.getString(TAG_SCHEDULEDATELOCAL).toString(); 
             schedule=schedule.substring(11); 

             Log.e("Before convert","Time"+schedule); 

             DateFormat f1 = new SimpleDateFormat("hh:mm:ss"); 
             Date d = f1.parse(schedule); 
             DateFormat f2 = new SimpleDateFormat("h:mm a"); 
             schedule=f2.format(d).toLowerCase(); // "12:18am" 

             Log.e("After convert","Time"+schedule); 
            // jestimateddeparture=joperationaltimes.getJSONObject(TAG_ACTUALGATEDEPARTURE); 
            // actual=jestimateddeparture.getString(TAG_ACTUALDATELOCAL).toString(); 
            // actual=actual.substring(11); 
           } 
           else 
           { 
            schedule="Not Available"; 
           } 

          } 
          map.put(TAG_MSCHEDULE, schedule); 

          //Log.e("ScheduleGatedtime",""+jschedulegatedeparture); 
          //Log.e("Schedule Time","Work"+schedule); 
          //Log.e("ActualGatedtime",""+jestimateddeparture); 
          //Log.e("Actual Time","Work"+actual); 

          //------------------------------------------------------------------------------------ 

          // AIRPORT RESOURCES OBJECT fOR getting departure terminal and departure gate 

          if(jflightstatuses.getJSONObject(i).has(TAG_AIRPORTRESOURCES)) 
          { 

          JSONObject airportresources=jflightstatuses.getJSONObject(i).getJSONObject(TAG_AIRPORTRESOURCES); 
          Log.e("airportresources","--->"+airportresources); 

           if(airportresources.has(TAG_DEPARTURETERMINAL)) 
           { 
            departureterminal=airportresources.get(TAG_DEPARTURETERMINAL).toString(); 
           } 
           else 
           { 
            departureterminal=""; 

           } 

           if(airportresources.has(TAG_DEPARTUREGATE)) 
           { 
            departuregate=airportresources.get(TAG_DEPARTUREGATE).toString(); 

           } 
           else 
           { 
            departuregate=""; 
           } 
           terminal="T-"+departureterminal+" "; 
           gate=departuregate; 
           terminalgate=terminal+gate; 
           Log.e("Terminal Gate","-->"+terminal+gate); 

           map.put(TAG_MTERMINALGATE,terminalgate); 
          } 
          else 
          { 
           terminalgate="Not Available"; 
           map.put(TAG_MTERMINALGATE,terminalgate); 
          } 
          //--------------------------------Aiport Resources Complete--------------------------------------------------- 


          //--------------------------------Aiport Flight Status Start--------------------------------------------------- 

           status=jflightstatuses.getJSONObject(i).getString(TAG_STATUS).toString(); 
           if(status.equalsIgnoreCase("S")) 
           { 
            status="Scheduled"; 
           } 
           if(status.equalsIgnoreCase("L")) 
           { 
            status="Landed"; 
           } 
           map.put(TAG_MFSTATUS, status); 
           Log.e("Status","--"+status); 
          //--------------------------------Aiport Flight Status Complete--------------------------------------------------- 

         flightList.add(map); 

         Log.e("FlightList","work"+flightList); 

         int displaymode=getResources().getConfiguration().orientation; 
         if(displaymode==1) 
         { 

           ListAdapter adapter = new SimpleAdapter(HomeActivity.this, flightList, 
             R.layout.listportrait, 
             new String[] { TAG_MDESTINATION, TAG_MFLIGHT, TAG_MAIRLINE,TAG_MSCHEDULE,TAG_MTERMINALGATE,TAG_MFSTATUS }, new int[] { 
               R.id.textdestination, R.id.textflight, R.id.textairline,R.id.textschedule,R.id.texttermgate,R.id.textstatus }); 
           setListAdapter(adapter); 
         } 
         else 
         { 
          ListAdapter adapter = new SimpleAdapter(HomeActivity.this, flightList, 
            R.layout.list, 
            new String[] { TAG_MDESTINATION, TAG_MFLIGHT, TAG_MAIRLINE,TAG_MSCHEDULE,TAG_MTERMINALGATE,TAG_MFSTATUS }, new int[] { 
              R.id.textdestination, R.id.textflight, R.id.textairline,R.id.textschedule,R.id.texttermgate,R.id.textstatus }); 
          setListAdapter(adapter); 

         } 

         } 




       }   
       catch (Exception e) 
       { 
        e.printStackTrace(); 
       } 

     } 
    }); 

    } 


} 

JsonParser.j AVA

public class JsonParser { 

    static InputStream is = null; 
    //static JSONObject jObj = null; 
    static String json; 
    StringBuilder sb; 



    public String getJSONFromUrl(String url) { 



     // Making HTTP request 
     try { 
      is = null; 
      //static JSONObject jObj = null; 
      json=""; 
      sb=null; 


      // defaultHttpClient 
      DefaultHttpClient httpClient = new DefaultHttpClient(); 
      HttpPost httpPost = new HttpPost(url); 
      Log.e("HTTPPOST","WORK-->"+httpPost); 

      HttpResponse httpResponse = httpClient.execute(httpPost); 
      Log.e("HTTPRESPONSE","WORK-->"+httpResponse); 

      StatusLine statusLine=httpResponse.getStatusLine(); 
      int statusCode= statusLine.getStatusCode(); 
      Log.e("status", "code"+statusCode); 

      HttpEntity httpEntity = httpResponse.getEntity(); 
      Log.e("HTTPENTITY","WORK-->"+httpEntity); 
      is = httpEntity.getContent(); 
     } 
      catch (UnsupportedEncodingException e) { 
       e.printStackTrace(); 
      } catch (ClientProtocolException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 

      try{ 
     // Log.e("HTTENTITY is","WORK"+is); 


      BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8); 
      Log.e("BUFFER READER","WORK-->"+reader); 


      sb = new StringBuilder(); 
      Log.e("STRINGBUILDER","WORK"); 

      String line = null; 
      while ((line = reader.readLine()) != null) { 
       sb.append(line); 
      } 
      //is.close(); 
      json = sb.toString(); 
      Log.e("STRINGBUILDER","WORK"+sb.toString()); 
     // Log.e("HTTPPOST SB TO STRING","WORK-->"+sb.toString()); 
     // Log.e("JSON STRING HTTPPOST","WORK-->"+json); 

     } catch (Exception e) { 
      Log.e("Buffer Error", "Error converting result " + e.toString()); 
     } 

     // return JSON String 
     //return json; 

     return sb.toString(); 

    } 


} 

logcat的 12月12日至8日：26：57.557：d/AndroidRuntime（1873）：關閉VM 12月12日至8日：26：57.557：W/dalvikvm（1873）：主題ID = 1：線程退出未捕獲的異常（group = 0x40a5f1f8） 12-08 12：26：57.567：E/AndroidRuntime（1873）：致命例外：main 12-08 12：26：57.567：E/AndroidRuntime（1873） android.os.NetworkOnMainThreadException 12-08 12：26：57.567：E/AndroidRuntime（1873）：at android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork（StrictMode.java:1099） 12-08 12：26：57.567：E/AndroidRuntime（1873）：在java.net.InetAddress.lookupHo stByName（InetAddress.java:391） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at java.net.InetAddress.getAllByNameImpl（InetAddress.java:242） 12-08 12：26：57.567： E/AndroidRuntime（1873）：在java.net.InetAddress.getAllByName（InetAddress.java:220） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at org.apache.http.impl.conn。 DefaultClientConnectionOperator.openConnection（DefaultClientConnectionOperator.java:137） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at org.apache.http.impl.conn.AbstractPoolEntry.open（AbstractPoolEntry.java:164） 12 -08 12：26：57.567：E/AndroidRuntime（1873）：at org.apache.http.impl.conn.AbstractPooledConnAdapter.open（AbstractPooledConnAdapter.java:119） 12-08 12：26：57.567：E/AndroidRuntime 1873）：在org.apache.http.impl.client.DefaultRequestDirector.execute（DefaultRequestDirector.java:3 60） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at org.apache.http.impl.client.AbstractHttpClient.execute（AbstractHttpClient.java:555） 12-08 12：26：57.567： E/AndroidRuntime（1873）：at org.apache.http.impl.client.AbstractHttpClient.execute（AbstractHttpClient.java:487） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at org.apache。 http.impl.client.AbstractHttpClient.execute（AbstractHttpClient.java:465） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at com.example.vixxa.JsonParser.getJSONFromUrl（JsonParser.java:96） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at com.example.vixxa.HomeActivity $ FlightListBack $ 4.onClick（HomeActivity.java:1815） 12-08 12：26：57.567：E/AndroidRuntime （1873）：at android.view.View.performClick（View.java:3511） 12-08 12：26：57.567：E/AndroidRuntime（1873 ）：at android.view.View $ PerformClick.run（View.java:14109） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at android.os.Handler.handleCallback（Handler.java:605 ） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at android.os.Handler.dispatchMessage（Handler.java:92） 12-08 12：26：57.567：E/AndroidRuntime（1873）在Android.os.Looper.loop（Looper.java:137） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at android.app.ActivityThread.main（ActivityThread.java:4424） 12- 08 12：26：57.567：E/AndroidRuntime（1873）：at java.lang.reflect.Method.invokeNative（Native Method） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at java.lang。 reflect.Method.invoke（Method.java:511） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit。java：784） 12-08 12：26：57.567：E/AndroidRuntime（1873）：at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:551） 12-08 12：26：57.567： E/AndroidRuntime（1873）：在dalvik.system.NativeStart.main（本機方法） 12-08 12：26：58.097：I/dalvikvm（1873）：threadid = 3：對信號3作出反應 12-08 12： 26：58.107：I/dalvikvm（1873）：將堆棧軌跡寫入'/data/anr/traces.txt' 12-08 12：31：41.347：I/Process（1873）：發送信號。 PID：1873 SIG：9

Answer 1

將此代碼添加到onCreate（）;方法之前打個電話EXCUTE的AsynckTask

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() 
       .detectDiskReads() 
       .detectDiskWrites() 
       .detectNetwork() // or .detectAll() for all detectable problems 
       .penaltyLog() 
       .build()); 
     StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder() 
       .detectLeakedSqlLiteObjects() 
       .detectLeakedClosableObjects() 
       .penaltyLog() 
       .penaltyDeath() 
       .build()); 

但是請記住，這個代碼是開發階段的幫助，你必須將其刪除，並在生產階段不使用任何網絡操作。

Answer 2

您從FlightListBack $ 4.onClick（您的匿名clicklistener你在這裏添加的呼叫JsonParser.getJSONFromUrl：buttontime.setOnClickListener（新OnClickListener（）{..}）

在這個JsonParser.getJSONFromUrl執行HTTP請求然後在主線程（或UI線程）上運行，因爲它是從onClick（）開始的。您應該重構代碼以在工作線程上執行http請求（例如，使用AsyncTask），就像您在另一種情況你叫JsonParser.getJSONFromUrl。