HttpGet AsyncTask致命异常＃1

Question

我见过这个问题的其他人，但不清楚如何修复它。实际上，我的代码在将Android更新为21版之前工作。希望有人在那里有类似的经历。无论如何，这是我的代码。

@Override 
protected JSONArray doInBackground(String...params) { 



    HttpClient client = new DefaultHttpClient(); 
    String url = params[0] + "?longitude=" + curr_longitude + "&latitude=" + curr_lat; 
HttpGet httpGet = new HttpGet(url); 
    StringBuilder builder = new StringBuilder(); 
    org.apache.http.HttpResponse response = null; 
    try { 
     response = client.execute(httpGet); 
    } catch (ClientProtocolException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } catch (IOException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 


    try { 

      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); 
       }//end while 

        JSONArray jsonarray = new JSONArray(builder.toString()); 

       return jsonarray; 


      }//end if 

else { 

      }}catch (Exception e){ 
       Log.e("log_tag", "Error in http connection" +e.getMessage()); 
      }//end try catch 
      return null; 

}//end function 

这里是logcat的

06-27 20:22:43.808: W/dalvikvm(29761): threadid=23: thread exiting with uncaught exception (group=0x40da1930) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): FATAL EXCEPTION: AsyncTask #1 
    06-27 20:22:43.808: E/AndroidRuntime(29761): java.lang.RuntimeException: An error occured while executing doInBackground() 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at android.os.AsyncTask$3.done(AsyncTask.java:299) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at java.util.concurrent.FutureTask.setException(FutureTask.java:219) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at java.util.concurrent.FutureTask.run(FutureTask.java:239) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at java.lang.Thread.run(Thread.java:856) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): Caused by: java.lang.IllegalStateException: Scheme 'htpp' not registered. 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.conn.scheme.SchemeRegistry.getScheme(SchemeRegistry.java:80) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.impl.conn.ProxySelectorRoutePlanner.determineRoute(ProxySelectorRoutePlanner.java:157) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:596) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at com.example.mapmapagain.MainActivity$GetfromServer.doInBackground(MainActivity.java:456) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at com.example.mapmapagain.MainActivity$GetfromServer.doInBackground(MainActivity.java:1) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at android.os.AsyncTask$2.call(AsyncTask.java:287) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): at     java.util.concurrent.FutureTask.run(FutureTask.java:234) 
    06-27 20:22:43.808: E/AndroidRuntime(29761): ... 4 more 

非常感谢你的帮助！

Answer 1

的错误信息是：

Caused by: java.lang.IllegalStateException: Scheme 'htpp' not registered. 

好像htpp应改为http。检查您的网址。