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POMy Async HTTP-Post does not work for an unkown reason
 

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    <p>I'm new to android and i try a simple HTTP Post, i had one working but became the error message that you can't post in the main class. After some Google research i found an alternative - the async-task - but I can't completely understand why this simple sample does not work.</p> <p>Can anyone help me?</p> <p>Thank you in advance.</p> <pre><code> new MyAsyncTask().execute().toString(); } class MyAsyncTask extends AsyncTask&lt;String, Integer, Double&gt; { // private ProgressBar pb; //pb=(ProgressBar); //pb.setVisibility(View.GONE); @Override protected Double doInBackground(String... params) { postData(params[0]); return null; } protected void onPostExecute(Double result){ // pb.setVisibility(View.GONE); Toast.makeText(getApplicationContext(), "command sent", Toast.LENGTH_LONG).show(); } // protected void onProgressUpdate(Integer... progress){ // pb.setProgress(progress[0]); //} public void postData(String valueIWantToSend) { // Create a new HttpClient and Post Header HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("url(got a real one here)"); try { // Add your data List&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(); nameValuePairs.add(new BasicNameValuePair("myHttpData", valueIWantToSend)); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); // Execute HTTP Post Request HttpResponse response = httpclient.execute(httppost); } catch (ClientProtocolException e) { // Log.i("CATCH Read from server", "error"); } catch (IOException e) { // Log.i("CATCH Read from server", "error"); } } } </code></pre> <blockquote> <p>11-11 15:08:32.768 357-394/? E/lights﹕ write_int failed to open /sys/class >/sec/sec_touchkey/brightness</p> <p>11-11 15:10:45.503 110-259/? E/SurfaceFlinger﹕ SurfaceFlinger translucent=1 >isOpaque=0 isExternalDisplayLayer=0 isExternalBlockLayer0</p> <p>11-11 15:04:57.643 28774-28790/? E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1 java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:299) at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) at java.util.concurrent.FutureTask.setException(FutureTask.java:124) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) at java.util.concurrent.FutureTask.run(FutureTask.java:137) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at >java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) at >java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) at java.lang.Thread.run(Thread.java:856) Caused by: java.lang.IllegalStateException: Target host must not be null, or set in >parameters. scheme=null, host=null, path=vlothopc.dyndns-home.com/mobile.asp at >org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.j>ava:591) at >org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293>) at >org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) at >org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) at >org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) at >com.example.miniapp2.MainActivity$1$MyAsyncTask.postData(MainActivity.java:310) at >com.example.miniapp2.MainActivity$1$MyAsyncTask.doInBackground(MainActivity.java:284) at >com.example.miniapp2.MainActivity$1$MyAsyncTask.doInBackground(MainActivity.java:276) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)             at java.util.concurrent.FutureTask.run(FutureTask.java:137)             at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)             at >java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)             at >java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)             at java.lang.Thread.run(Thread.java:856)</p> </blockquote>
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    1. COAny logging? Also, are you sure you're not throwing exceptions?
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    2. COdo you have internet permission in your mainfest <uses-permission android:name="android.permission.INTERNET" />
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    3. COadd LOGCAT Traces
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      1. USNitin Misra
 

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