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POSend data to jsp from android
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  1. POSend data to jsp from android
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    copied!<p>i´m trying to send data to a jsp file running on localhost.. When i click submit on my phone, the application fails, and shows me <em>Unfortunately, application has stopped.</em></p> <p><strong>LoginTask:</strong></p> <pre><code>public class LoginTask extends AsyncTask&lt;String, Void, Integer&gt; { private ProgressDialog progressDialog; private LoginActivity activity; private int id = -1; public LoginTask(LoginActivity activity, ProgressDialog progressDialog) { this.activity = activity; this.progressDialog = progressDialog; } @Override protected void onPreExecute() { progressDialog.show(); } @Override protected Integer doInBackground(String... arg0) { String result = ""; int responseCode = 0; try { HttpClient client = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://192.168.1.100:8080/test/AndroidCheck.jsp"); List&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(); nameValuePairs.add(new BasicNameValuePair("username", arg0[0])); nameValuePairs.add(new BasicNameValuePair("password", arg0[1])); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); int executeCount = 0; HttpResponse response; do { progressDialog.setMessage("Logging in.. ("+(executeCount+1)+"/5)"); executeCount++; response = client.execute(httppost); responseCode = response.getStatusLine().getStatusCode(); } while (executeCount &lt; 5 &amp;&amp; responseCode == 408); BufferedReader rd = new BufferedReader(new InputStreamReader( response.getEntity().getContent())); String line; while ((line = rd.readLine()) != null) { result = line.trim(); } id = Integer.parseInt(result); } catch (Exception e) { responseCode = 408; e.printStackTrace(); } return responseCode; } @Override protected void onPostExecute(Integer headerCode) { progressDialog.dismiss(); if(headerCode == 202) activity.login(id); else activity.showLoginError(""); } } </code></pre> <p><strong>LoginActivity:</strong></p> <pre><code>public class LoginActivity extends Activity { protected static final int LOGIN_REQUEST_CODE = 0; protected static final int RECOVER_REQUEST_CODE = 1; protected static final int REGISTER_REQUEST_CODE = 2; public static final int LOGOUT_RESULT_CODE = 2; SharedPreferences sharedPreferences; private EditText username; private EditText password; private Button btnLogin;; private final Class&lt;?&gt; LOGIN_DESTINATION = AndroidNavigationTabsActivity.class; @Override protected void onCreate(Bundle savedInstanceState) { sharedPreferences = getPreferences(MODE_PRIVATE); super.onCreate(savedInstanceState); if( sharedPreferences.getBoolean("user_logged_in", false)) { startActivityForResult( new Intent(LoginActivity.this, LOGIN_DESTINATION), LOGIN_REQUEST_CODE); } setContentView(R.layout.login_activity); username=(EditText)this.findViewById(R.id.username); password=(EditText)this.findViewById(R.id.password); btnLogin=(Button)this.findViewById(R.id.btnLogin); btnLogin.setOnClickListener(loginOnClickListener); } protected OnClickListener loginOnClickListener = new OnClickListener() { public void onClick(View v) { ProgressDialog progressDialog = new ProgressDialog(LoginActivity.this); progressDialog.setMessage("Logging in..."); progressDialog.setCancelable(false); LoginTask loginTask = new LoginTask(LoginActivity.this, progressDialog); loginTask.execute(username.getText().toString(),password.getText().toString()); } }; public void showLoginError(String result) { AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this); builder.setPositiveButton(R.string.okay, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }); builder.setMessage(R.string.login_invalid_error); AlertDialog alert = builder.create(); alert.setCancelable(false); alert.show(); } public void login(int id) { sharedPreferences.edit().putBoolean("user_logged_in", true).commit(); startActivityForResult( new Intent(LoginActivity.this, LOGIN_DESTINATION), LOGIN_REQUEST_CODE); } } </code></pre> <p>When i hit <strong>Submit</strong> on my phone, it shows me Error(Toast). The jsp page(AndroidCheck.jsp) shows me <code>null</code> (i´m trying to show on webpage, what i type in my phone:username and login). I have no idea, where is the problem...</p>
 

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