The key part of your log is:
org.json.JSONException: End of input at character 0 of
This means it does not think its input is a JSON type format.
I had the same error and ended up using some different code
but never bothered to sort out exactly what was going wrong - sorry.
Here is my code that works for Twitter. Maybe you can see something::
private Thread checkUpdate = new Thread() {
public void run() {
try { /
// String Text = URLEncoder.encode("Android", "UTF-8");
//
http://cloudcollaboration.appspot.com/SecondGetter?content=qaz
URL updateURL = new URL("http://search.twitter.com/
search.json?q="+string_from_speaker);
// Log.d("wwww", "44" + Text);
URLConnection conn = updateURL.openConnection();
InputStream is = conn.getInputStream();
BufferedInputStream bis = new
BufferedInputStream(is);
ByteArrayBuffer baf = new ByteArrayBuffer(50);
int current = 0;
while((current = bis.read()) != -1){
baf.append((byte)current);
}
/* Convert the Bytes read to a String. */
html = new String(baf.toByteArray());
// Log.d("wwww", "3" + html);
mHandler.post(showUpdate);
} catch (Exception e) {
tv1.setText(" having trouble getting online");
}
}
};
private Runnable showUpdate = new Runnable(){
public void run(){
try {
jObject = new JSONObject(html);
JSONArray sessions = jObject.getJSONArray("results");
for (int i = 0; i < sessions.length(); i++) {
JSONObject session = sessions.getJSONObject(i);
Tweet tweet = new Tweet();
tweet.content = session.getString("text");
tweet.author = session.getString("from_user");
tweets.add(tweet);
}
On May 16, 1:07 pm, Rocky <[email protected]> wrote:
> Hi all,
>
> I'm facing problem when trying to use JSON object to access the .net project
> database.
> please let me know, where i'm doing mistake, i given more than 4 days to
> rectify.
>
> logcat details -
>
> 05-16 17:32:26.132: INFO/System.out(1656): response.getProtocolVersion()
> =HTTP/1.0
> 05-16 17:32:26.132: INFO/System.out(1656):
> response.getStatusLine().getStatusCode() =404
> 05-16 17:32:26.132: INFO/System.out(1656):
> response.getStatusLine().getReasonPhrase() = Not Found
> 05-16 17:32:26.141: INFO/System.out(1656):
> response.getStatusLine().toString() =HTTP/1.0 404 Not Found
> 05-16 17:32:26.141: INFO/System.out(1656): inside try 3
> 05-16 17:32:26.151: INFO/System.out(1656): connection entity.toString()=
> org.apache.http.conn.BasicManagedEntity@43ea4288
> 05-16 17:32:26.161: INFO/global(1656): Default buffer size used in
> BufferedReader constructor. It would be better to be explicit if an 8k-char
> buffer is required.
> 05-16 17:32:26.161: INFO/System.out(1656): result =
> 05-16 17:32:26.171: WARN/System.err(1656): org.json.JSONException: End of
> input at character 0 of
> 05-16 17:32:26.182: WARN/System.err(1656): at
> org.json.JSONTokener.syntaxError(JSONTokener.java:446)
> 05-16 17:32:26.182: WARN/System.err(1656): at
> org.json.JSONTokener.nextValue(JSONTokener.java:93)
> 05-16 17:32:26.182: WARN/System.err(1656): at
> org.json.JSONObject.<init>(JSONObject.java:154)
> 05-16 17:32:26.182: WARN/System.err(1656): at
> org.json.JSONObject.<init>(JSONObject.java:171)
> 05-16 17:32:26.182: WARN/System.err(1656): at
> com.sst.restaurant.RestJsonClient.connect(RestJsonClient.java:75)
> 05-16 17:32:26.192: WARN/System.err(1656): at
> com.sst.restaurant.LoginDetails.onClick(LoginDetails.java:141)
> 05-16 17:32:26.192: WARN/System.err(1656): at
> android.view.View.performClick(View.java:2408)
> 05-16 17:32:26.192: WARN/System.err(1656): at
> android.view.View$PerformClick.run(View.java:8816)
> 05-16 17:32:26.192: WARN/System.err(1656): at
> android.os.Handler.handleCallback(Handler.java:587)
> 05-16 17:32:26.192: WARN/System.err(1656): at
> android.os.Handler.dispatchMessage(Handler.java:92)
> 05-16 17:32:26.212: WARN/System.err(1656): at
> android.os.Looper.loop(Looper.java:123)
> 05-16 17:32:26.306: DEBUG/dalvikvm(1656): GC_FOR_MALLOC freed 2764 objects /
> 179392 bytes in 92ms
> 05-16 17:32:26.306: WARN/System.err(1656): at
> android.app.ActivityThread.main(ActivityThread.java:4627)
> 05-16 17:32:26.306: WARN/System.err(1656): at
> java.lang.reflect.Method.invokeNative(Native Method)
> 05-16 17:32:26.311: WARN/System.err(1656): at
> java.lang.reflect.Method.invoke(Method.java:521)
> 05-16 17:32:26.311: WARN/System.err(1656): at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:
> 868)
> 05-16 17:32:26.311: WARN/System.err(1656): at
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
> 05-16 17:32:26.311: WARN/System.err(1656): at
> dalvik.system.NativeStart.main(Native Method)
> 05-16 17:32:26.321: WARN/System.err(1656): org.json.JSONException: No value
> for Login
> 05-16 17:32:26.321: WARN/System.err(1656): at
> org.json.JSONObject.get(JSONObject.java:354)
> 05-16 17:32:26.321: WARN/System.err(1656): at
> org.json.JSONObject.getString(JSONObject.java:510)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> com.sst.restaurant.LoginDetails.onClick(LoginDetails.java:142)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> android.view.View.performClick(View.java:2408)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> android.view.View$PerformClick.run(View.java:8816)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> android.os.Handler.handleCallback(Handler.java:587)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> android.os.Handler.dispatchMessage(Handler.java:92)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> android.os.Looper.loop(Looper.java:123)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> android.app.ActivityThread.main(ActivityThread.java:4627)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> java.lang.reflect.Method.invokeNative(Native Method)
> 05-16 17:32:26.341: WARN/System.err(1656): at
> java.lang.reflect.Method.invoke(Method.java:521)
> 05-16 17:32:26.352: WARN/System.err(1656): at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:
> 868)
> 05-16 17:32:26.352: WARN/System.err(1656): at
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
> 05-16 17:32:26.372: WARN/System.err(1656): at
> dalvik.system.NativeStart.main(Native Method)
>
> my source code - jsno client code -
>
> public class RestJsonClient {
>
> public static JSONObject connect(String url) {
> String result = null;
> System.out.println("result = " + result);
> HttpClient httpclient = new DefaultHttpClient();
>
> // Prepare a request object
> HttpGet httpget = new HttpGet("http://10.91.28.203";);
>
> // Execute the request
> HttpResponse response;
>
> JSONObject json = new JSONObject();
> System.out.println("result = " + result);
> System.out.println("json object " + json.toString());
>
> try {
> System.out.println("inside try 1");
> response = httpclient.execute(httpget);
>
> System.out.println("inside try 2");
> System.out.println("response.getProtocolVersion() ="
> + response.getProtocolVersion());
> System.out.println("response.getStatusLine().getStatusCode() ="
> + response.getStatusLine().getStatusCode());
> System.out.println("response.getStatusLine().getReasonPhrase()
> = "
> + response.getStatusLine().getReasonPhrase());
> System.out.println("response.getStatusLine().toString() ="
> + response.getStatusLine().toString());
>
> HttpEntity entity = response.getEntity();
> System.out.println("inside try 3");
>
> System.out.println("connection entity.toString()= "
> + entity.toString());
>
> if (entity != null) {
>
> // A Simple JSON Response Read
> InputStream instream = entity.getContent();
> result = convertStreamToString(instream);
> System.out.println("result = " + result);
>
> json = new JSONObject(result);
>
> instream.close();
> }
>
> } catch (ClientProtocolException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> } catch (IOException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> } catch (JSONException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
>
> return json;
> }
>
> /**
> *
> * @param is
> * @return String
> */
> public static String convertStreamToString(InputStream is) {
> BufferedReader reader = new BufferedReader(new
> InputStreamReader(is));
> StringBuilder sb = new StringBuilder();
>
> String line = null;
> try {
> while ((line = reader.readLine()) != null) {
> sb.append(line + "\n");
> }
> } catch (IOException e) {
> e.printStackTrace();
> } finally {
> try {
> is.close();
> } catch (IOException e) {
> e.printStackTrace();
> }
> }
> return sb.toString();
> }
>
> }
>
> LoginDetails page -
> public class LoginDetails extends Activity implements OnClickListener {
>
> private static final int SERVER_PORT = 1311;
>
> private static final String DEB_TAG = "Json_Android";
>
> private String SERVER_HOST = "http://localhost:1311/";;
>
> public static final String PREFS_NAME = "HelloAndroidPREFS";
> private SharedPreferences settings;
>
> private ProgressDialog progress;
> JSONObject json;
>
> /*
> * protected LoginScreen(Context paramContext) { super(paramContext);
> * AppInstance.getInstance().LoadPreferences(paramContext); }
> */
>
> /** Called when the activity is first created. */
>
> @Override
> public void onCreate(Bundle icicle) {
>
> requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
>
> super.onCreate(icicle);
>
> // Restore preferences
>
> settings = getSharedPreferences(PREFS_NAME, 0);
>
> // load up the layout
>
> setContentView(R.layout.main3);
>
> // get the button resource in the xml file and assign it to a local
> // variable of type Button
>
> Button login = (Button) findViewById(R.id.login_button);
>
> Log.i(DEB_TAG, "onCreate");
>
> login.setOnClickListener(this);
>
> setUserNameText(settings.getString("Login", ""));
>
> setPasswordText(settings.getString("Password", ""));
>
> }
>
> public void setUserNameText(String $username) {
> EditText usernameEditText = (EditText)
> findViewById(R.id.txt_username);
> usernameEditText.setText($username);
> }
>
> public void setPasswordText(String username) {
> EditText passwordEditText = (EditText)
> findViewById(R.id.txt_password);
> passwordEditText.setText(username);
>
> }
>
> /*
> *
> * (non-Javadoc)
> *
> * @see android.view.View.OnClickListener#onClick(android.view.View)
> */
>
> public void onClick(View v) {
>
> // Handle based on which view was clicked.
>
> Log.i(DEB_TAG + " onClick ", "onClick");
>
> // this gets the resources in the xml file
>
> // and assigns it to a local variable of type EditText
>
> EditText usernameEditText = (EditText)
> findViewById(R.id.txt_username);
>
> EditText passwordEditText = (EditText)
> findViewById(R.id.txt_password);
>
> // the getText() gets the current value of the text box
>
> // the toString() converts the value to String data type
>
> // then assigns it to a variable of type String
>
> String sUserName = usernameEditText.getText().toString();
>
> String sPassword = passwordEditText.getText().toString();
>
> // call the backend using Get parameters (discouraged but works good
> for
> // this exampl <img
> //
> src="http://www.instropy.com/wp-includes/images/smilies/icon_wink.gif";
> // alt=";)" class="wp-smiley"> )
>
> String address = "http://"; + SERVER_HOST + ":" + SERVER_PORT
> + "/Login.aspx?action=login&Login=" + sUserName +
> "&Password="
> + sPassword + "";
>
> if ((usernameEditText == null) || (passwordEditText == null)) {
> System.out.println("User Name does not exit");
> Toast.makeText(this.getBaseContext(),
> "Invalid Username or password", 0).show();
> } else {
> // display the username and the password in string format
> // Toast.makeText(getBaseContext(), "valid Username or
> password",
> // 0).show();
> try {
>
> showBusyCursor(true);
>
> progress = ProgressDialog.show(this,
>
> "Please wait...", "Login in process", true);
>
> Log.i(DEB_TAG, "Username: " + sUserName + " Password: "
> + sPassword);
>
> Log.i(DEB_TAG, "Requesting to " + address);
>
> json = RestJsonClient.connect(address);
> System.out.println("json =" + json.getString("Login"));
>
> } catch (Exception e) {
>
> // TODO Auto-generated catch block
>
> e.printStackTrace();
>
> showBusyCursor(false);
>
> }// end try
>
> progress.dismiss();
>
> SharedPreferences.Editor editor = settings.edit();
> editor.putString("Login", sUserName);
> editor.putString("Password", sPassword);
>
> editor.commit();
> showBusyCursor(false);
> next();
>
> }// end else
>
> }// end OnClick
>
> /*
>
> *
>
> */
>
> private void showBusyCursor(Boolean $show) {
> setProgressBarIndeterminateVisibility($show);
> }
>
> private void next() {
> // you can call another activity by uncommenting the above lines
> Intent myIntent = new Intent(this.getBaseContext(),
> RestaurantHome.class);
> startActivityForResult(myIntent, 0);
> }
> /*
> * protected String doInBackground(String[] paramArrayOfString) {
> WebService
> * localWebService = new WebService(); WebService.WebServiceCall
> * localWebServiceCall = WebService.WebServiceCall.LOGIN; Object[]
> * arrayOfObject = new Object[2]; String str1 = paramArrayOfString[0];
> * arrayOfObject[0] = str1; String str2 = paramArrayOfString[1];
> * arrayOfObject[1] = str2; return
> * localWebService.execute(localWebServiceCall, true, arrayOfObject); }
> */
>
> }
>
> --
> Thanks & Regards
>
> Rakesh Kumar Jha
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![http://www.instropy.com/wp-includes/images/smilies/icon_wink.gif"](http://www.instropy.com/wp-includes/images/smilies/icon_wink.gif"){kind=link}