Issue retrieving JSON in Android

Issue retrieving JSON in Android - java

I've looked at countless projects and tutorials and haven't been able to figure out why my app is crashing as soon as it is ran. It seems to run fine if i comment out the first line in the try catch "JSONObject dataObject = json.getJSONObject("data");" The JSON that i'm trying to parse is formatted as such:
{"recordcount":3,
"columnlist":"department,emailaddress,firstname,has_photos,job_full_title,job_title,kid,lastname,location,middlename,no_show_photo,phone,school",
"data":
{"department":["Public Safety","Information Technology","Information Technology"],
"emailaddress":["todd.mongeon#wne.edu","amutti#wne.edu","fatemeh.shams#wne.edu"],
"firstname":["Todd","Tony","Toffee"],
"has_photos":["Y","Y","N"],
"job_full_title":["Officer","Director, Administrative Information Systems","Sr.Technical Programmer/Analyst and Integ Specialist"],
"job_title":["Officer","Director, Administrative Information Systems","Sr.Technical Programmer/Analyst and Integ Specialist"],
"kid":[286899,2497,297411],
"lastname":["Mongeon","Mutti","Shams"],
"location":["PS","12 V","12 V"],
"middlename":["A.","M.",""],
"no_show_photo":["","",""],
"phone":["413-782-1207","413-782-1212","413-796-2398"],
"school":["Public Safety Group","Information Technology Group","Information Technology Group"]}}
My program looks like this (please excuse formatting / things that don't need to be there... it needs to be cleaned up from a lot of the things i've tried to get this to work..)
public class Directory_finalActivity extends ListActivity {
public static String url = "http://www1.wne.edu/webservices/directorydemo.cfc?wsdl&method=getEmployees&limit=25&firstname=to&outputtype=JSON";
// JSON array names
private static final String TAG_FIRST = "firstname";
private static final String TAG_LAST = "lastname";
private static final String TAG_SCHOOL = "school";
private static final String TAG_DEPARTMENT = "department";
private static final String TAG_EMAIL = "emailaddress";
private static final String TAG_PHONE = "phone";
private static final String TAG_JOB = "job_title";
private static final String TAG_LOCATION = "location";
//create JSON array
JSONArray firstNames = null;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Hashmap for ListView
ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>();
// Creating JSON Parser instance
JSONParser jParser = new JSONParser();
// getting JSON string from URL
JSONObject json = jParser.getJSONFromUrl(url);
String[] firstNames = null;
try {
// Getting the data object
JSONObject dataObject = json.getJSONObject("data"); //This is the line that seems to be causing the error.
int numResults = json.getInt("recordcount");
/**
JSONArray firstNameArray = dataObject.getJSONArray("firstname");
JSONArray lastNameArray = dataObject.getJSONArray("lastname");
JSONArray schoolArray = dataObject.getJSONArray("school");
JSONArray departmentArray = dataObject.getJSONArray("department");
JSONArray eMailArray = dataObject.getJSONArray("emailaddress");
JSONArray phoneNumberArray = dataObject.getJSONArray("phone");
JSONArray jobTitleArray = dataObject.getJSONArray("job_title");
JSONArray locationArray = dataObject.getJSONArray("location");
//Loop through index of array(s)
for(int i = 0; i <= numResults; i++)
{
//Store value of JSONArray at index "i" into string variables.
String firstName = firstNameArray.getString(i);
String eMail = eMailArray.getString(i);
String phone = phoneNumberArray.getString(i);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_FIRST, firstName);
map.put(TAG_EMAIL, eMail);
map.put(TAG_PHONE, phone);
//add the hashmap to array list.
contactList.add(map);
}*/
}
catch (JSONException e) {
e.printStackTrace();
}
/**
* Updating parsed JSON data into ListView
* */
//ListAdapter adapter = new SimpleAdapter(this, contactList,
// R.layout.list_item,
// new String[] { TAG_FIRST, TAG_EMAIL, TAG_PHONE }, new int[] {
// R.id.name, R.id.email, R.id.mobile });
//setListAdapter(adapter);
}
}
My JSONParser class
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
I'm probably doing something incredibly stupid here, i'm new to this so give me a break please haha. I appreciate any info that you guys may have for me.
For curiosity sake the end goal is to search the database (first name, last name, school, and department) and put the results into a list view, when clicked on a window will pop up displaying other relevant information with a couple other features.
It seems every example i see the JSON output they receive from the url is formatted much differently, so i'm having trouble getting this done even with the amount of examples available (sorry for re-post).
Once again thank you for any assistance.
EDIT 1:
LOGCAT:
04-17 00:45:35.828: W/System.err(305): java.net.UnknownHostException: api.androidhive.info
04-17 00:45:35.828: W/System.err(305): at java.net.InetAddress.lookupHostByName(InetAddress.java:513)
04-17 00:45:35.838: W/System.err(305): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:278)
04-17 00:45:35.838: W/System.err(305): at java.net.InetAddress.getAllByName(InetAddress.java:242)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
04-17 00:45:35.838: W/System.err(305): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
04-17 00:45:35.838: W/System.err(305): at directory.plus.JSONParser.getJSONFromUrl(JSONParser.java:39)
04-17 00:45:35.838: W/System.err(305): at directory.plus.Directory_finalActivity.onCreate(Directory_finalActivity.java:53)
04-17 00:45:35.849: W/System.err(305): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-17 00:45:35.849: W/System.err(305): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-17 00:45:35.849: W/System.err(305): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-17 00:45:35.849: W/System.err(305): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-17 00:45:35.849: W/System.err(305): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-17 00:45:35.849: W/System.err(305): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 00:45:35.849: W/System.err(305): at android.os.Looper.loop(Looper.java:123)
04-17 00:45:35.849: W/System.err(305): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-17 00:45:35.849: W/System.err(305): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 00:45:35.849: W/System.err(305): at java.lang.reflect.Method.invoke(Method.java:521)
04-17 00:45:35.858: W/System.err(305): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-17 00:45:35.858: W/System.err(305): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-17 00:45:35.858: W/System.err(305): at dalvik.system.NativeStart.main(Native Method)
04-17 00:45:35.858: E/Buffer Error(305): Error converting result java.lang.NullPointerException
04-17 00:45:35.868: E/JSON Parser(305): Error parsing data org.json.JSONException: End of input at character 0 of
04-17 00:45:35.868: D/AndroidRuntime(305): Shutting down VM
04-17 00:45:35.868: W/dalvikvm(305): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-17 00:45:35.888: E/AndroidRuntime(305): FATAL EXCEPTION: main
04-17 00:45:35.888: E/AndroidRuntime(305): java.lang.RuntimeException: Unable to start activity ComponentInfo{directory.plus/directory.plus.Directory_finalActivity}: java.lang.NullPointerException
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.os.Looper.loop(Looper.java:123)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-17 00:45:35.888: E/AndroidRuntime(305): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 00:45:35.888: E/AndroidRuntime(305): at java.lang.reflect.Method.invoke(Method.java:521)
04-17 00:45:35.888: E/AndroidRuntime(305): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-17 00:45:35.888: E/AndroidRuntime(305): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-17 00:45:35.888: E/AndroidRuntime(305): at dalvik.system.NativeStart.main(Native Method)
04-17 00:45:35.888: E/AndroidRuntime(305): Caused by: java.lang.NullPointerException
04-17 00:45:35.888: E/AndroidRuntime(305): at directory.plus.Directory_finalActivity.onCreate(Directory_finalActivity.java:59)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-17 00:45:35.888: E/AndroidRuntime(305): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
EDIT 2:
NEW LOGCAT OUTPUT:
04-17 01:26:12.899: E/JSON Parser(548): Error parsing data in JSONParser org.json.JSONException: Value <wddxPacket of type java.lang.String cannot be converted to JSONObject
04-17 01:26:12.899: D/AndroidRuntime(548): Shutting down VM
04-17 01:26:12.899: W/dalvikvm(548): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-17 01:26:12.919: E/AndroidRuntime(548): FATAL EXCEPTION: main
04-17 01:26:12.919: E/AndroidRuntime(548): java.lang.RuntimeException: Unable to start activity ComponentInfo{directory.plus/directory.plus.Directory_finalActivity}: java.lang.NullPointerException
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.os.Looper.loop(Looper.java:123)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-17 01:26:12.919: E/AndroidRuntime(548): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 01:26:12.919: E/AndroidRuntime(548): at java.lang.reflect.Method.invoke(Method.java:521)
04-17 01:26:12.919: E/AndroidRuntime(548): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-17 01:26:12.919: E/AndroidRuntime(548): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-17 01:26:12.919: E/AndroidRuntime(548): at dalvik.system.NativeStart.main(Native Method)
04-17 01:26:12.919: E/AndroidRuntime(548): Caused by: java.lang.NullPointerException
04-17 01:26:12.919: E/AndroidRuntime(548): at directory.plus.Directory_finalActivity.onCreate(Directory_finalActivity.java:59)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-17 01:26:12.919: E/AndroidRuntime(548): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-17 01:26:12.919: E/AndroidRuntime(548): ... 11 more
04-17 01:26:33.279: I/Process(548): Sending signal. PID: 548 SIG: 9
EDIT FINAL: Problem solved:
Needed to take a sub string of the result returned from the html and pass that into a json object

java.net.UnknownHostException: api.androidhive.info
It looks like your app can't access the network. Have you added:
<uses-permission
android:name="android.permission.INTERNET" />
to your code AndroidManifest.xml?

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Fragment cannot be cast to android.content.Context

I want to connect my login page to MySQL PHP but I got some error here.
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Process: com.aeu.mlibrary.mlibraryaeu, PID: 1807
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and this is the error line in my loginFragment.java:
#Override
public void onClick(View v) {
HashMap postData = new HashMap();
postData.put("mobile", "android");
postData.put("txtUsername", etUsername.getText().toString());
postData.put("txtPassword", etPassword.getText().toString());
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Thank you.

Replace LoginFragment.this with getActvity()
PostResponseAsyncTask task = new PostResponseAsyncTask(getActivity(), postData);

Replace LoginFragment.this with getContext() :
PostResponseAsyncTask task = new PostResponseAsyncTask(getContext(), postData);

Android java.lang.NullPointerException not able to populate the listview

I'm trying to populate a listview with some data from json.
Here are the errors I am getting:
04-17 12:54:25.573: E/JSON Parser(1169): Error parsing data org.json.JSONException:
of type org.json.JSONArray cannot be converted to JSONObject
04-17 12:54:26.223: E/AndroidRuntime(1169): FATAL EXCEPTION: main
04-17 12:54:26.223: E/AndroidRuntime(1169): Process: com.example.mysqltest, PID: 1169
04-17 12:54:26.223: E/AndroidRuntime(1169): java.lang.NullPointerException
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04-17 12:54:26.223: E/AndroidRuntime(1169): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645)
04-17 12:54:26.223: E/AndroidRuntime(1169): at android.os.Handler.dispatchMessage(Handler.java:102)
04-17 12:54:26.223: E/AndroidRuntime(1169): at android.os.Looper.loop(Looper.java:136)
04-17 12:54:26.223: E/AndroidRuntime(1169): at android.app.ActivityThread.main(ActivityThread.java:5017)
04-17 12:54:26.223: E/AndroidRuntime(1169): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 12:54:26.223: E/AndroidRuntime(1169): at java.lang.reflect.Method.invoke(Method.java:515)
04-17 12:54:26.223: E/AndroidRuntime(1169): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-17 12:54:26.223: E/AndroidRuntime(1169): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-17 12:54:26.223: E/AndroidRuntime(1169): at dalvik.system.NativeStart.main(Native Method)
Here is my Java file...
JSONArray array = null
public void onClick(View view)
new JSONParseP().execute()
private class JSONParseP extends AsyncTask<String, String, JSONObject>
protected JSONObject doInBackground(String... args)
JSONParserP jParser = new JSONParserP();
// Getting JSON from URL
JSONObject json = jParser.getJSONFromUrlP(url);
return json;
protected void onPostExecute(JSONObject json)
pDialog.dismiss();
try {
// Getting JSON Array from URL
array = json.getJSONArray(null);
for(int i = 0; i < array.length(); i++){
JSONObject c = array.getJSONObject(i);
Any help I would highly appreciate it.
Thanks.

Try changing JSONObject c = array.getJSONObject(i); to JSONArray c = array.getJSONArray(i);

How do I create custom classes as subroutines

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Here's the class so far:
import android.app.ActionBar;
import android.app.ActionBar.OnNavigationListener;
import android.app.Activity;
import android.content.Intent;
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import android.widget.SpinnerAdapter;
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public ActionBar actionBar = getActionBar(); // actionbar object
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actionBar.setDisplayShowTitleEnabled(false);
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case 1:
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actionBar.setListNavigationCallbacks(mSpinnerAdapter, mOnNavigationListener);
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Back in my activity class, I want to apply it as such:
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setContentView(R.layout.activity_adventurer_new_character);
navBar.display();
navBar.listen();
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I'm running into an error and I don't understand LogCat's output. Here's the LogCat ouput:
04-17 23:12:01.110: E/AndroidRuntime(14013): FATAL EXCEPTION: main
04-17 23:12:01.110: E/AndroidRuntime(14013): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.app/com.app.AdventurersNewCharacterActivity}: java.lang.NullPointerException
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1903)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2004)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.ActivityThread.access$600(ActivityThread.java:132)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1157)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.os.Looper.loop(Looper.java:137)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.ActivityThread.main(ActivityThread.java:4580)
04-17 23:12:01.110: E/AndroidRuntime(14013): at java.lang.reflect.Method.invokeNative(Native Method)
04-17 23:12:01.110: E/AndroidRuntime(14013): at java.lang.reflect.Method.invoke(Method.java:511)
04-17 23:12:01.110: E/AndroidRuntime(14013): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
04-17 23:12:01.110: E/AndroidRuntime(14013): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
04-17 23:12:01.110: E/AndroidRuntime(14013): at dalvik.system.NativeStart.main(Native Method)
04-17 23:12:01.110: E/AndroidRuntime(14013): Caused by: java.lang.NullPointerException
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.Activity.initActionBar(Activity.java:2071)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.Activity.getActionBar(Activity.java:2058)
04-17 23:12:01.110: E/AndroidRuntime(14013): at com.app.NavigationActionBarManager.<init>(NavigationActionBarManager.java:13)
04-17 23:12:01.110: E/AndroidRuntime(14013): at com.app.AdventurersNewCharacterActivity.<init>(AdventurersNewCharacterActivity.java:13)
04-17 23:12:01.110: E/AndroidRuntime(14013): at java.lang.Class.newInstanceImpl(Native Method)
04-17 23:12:01.110: E/AndroidRuntime(14013): at java.lang.Class.newInstance(Class.java:1319)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.Instrumentation.newActivity(Instrumentation.java:1025)
04-17 23:12:01.110: E/AndroidRuntime(14013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1894)
04-17 23:12:01.110: E/AndroidRuntime(14013): ... 11 more

Have you implemented the onCreateOptionsMenu() method in your activity?
doc available at https://developer.android.com/guide/topics/ui/actionbar.html

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Hi i have developed one android application.
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SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.setOutputSoapObject(request);
HttpTransportSE ht = new HttpTransportSE(URL);
try {
ht.call(SOAP_ACTION, envelope);
SoapPrimitive response = (SoapPrimitive)envelope.getResponse();
SoapPrimitive s = response;
String str = s.toString();
String resultArr[] = str.split("&");//Result string will split & store in an array
TextView tv = new TextView(this);
for(int i = 0; i<resultArr.length;i++){
tv.append(resultArr[i]+"\n\n");
}
setContentView(tv);
} catch (Exception e) {
e.printStackTrace();
}
}}
If i have to run the app means blank screen only displayed.it is taking too long time nearly 1 hour
also am getting following error on my android console window:
11-05 10:38:27.868: W/System.err(837): java.lang.ClassCastException: org.ksoap2.serialization.SoapObject
11-05 10:38:27.878: W/System.err(837): at com.retailer.client.RetailerActivity.onCreate(RetailerActivity.java:29)
11-05 10:38:27.878: W/System.err(837): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
11-05 10:38:27.878: W/System.err(837): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
11-05 10:38:27.878: W/System.err(837): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
11-05 10:38:27.878: W/System.err(837): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
11-05 10:38:27.878: W/System.err(837): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
11-05 10:38:27.878: W/System.err(837): at android.os.Handler.dispatchMessage(Handler.java:99)
11-05 10:38:27.878: W/System.err(837): at android.os.Looper.loop(Looper.java:123)
11-05 10:38:27.878: W/System.err(837): at android.app.ActivityThread.main(ActivityThread.java:4627)
11-05 10:38:27.878: W/System.err(837): at java.lang.reflect.Method.invokeNative(Native Method)
11-05 10:38:27.878: W/System.err(837): at java.lang.reflect.Method.invoke(Method.java:521)
11-05 10:38:27.878: W/System.err(837): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-05 10:38:27.878: W/System.err(837): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-05 10:38:27.888: W/System.err(837): at dalvik.system.NativeStart.main(Native Method)
please help me.how can i resolve this error.

Change
SoapPrimitive response = (SoapPrimitive)envelope.getResponse();
to
SoapObject response = (SoapObject)envelope.getResponse();

How to remove error when declaring an array of a class in Android

Basically, I'm making a reversi app for Android, and I am currently at the point of setting up the game board. The way I am intending to do this is to create a 2D array of the position class. Each position is represented by an imageview that is used as a button which represents a board position. Here is a snippet of the code that contains the error:
setupBoard(board);
....
public void setupBoard(Position board[][]) {
for (int y = 0; y < 8; y++) {
for (int x = 0; x < 8; x++) {
Log.d("Error","Error a");
board[x][y] = new Position(getApplicationContext());
Log.d("Error","Error b");
board[x][y].isPositionEmpty = true;
}
}
}
In the position class:
public class Position {
Context myContext;
public Position(Context context) {
Log.d("Error","Error c");
myContext = context;
// TODO Auto-generated constructor stub
}
public boolean isPositionEmpty = true;
public int positionID;
public ImageView button = new ImageView(myContext);
}
The program gets to error a, but no further. The error in LogCat is:
java.lang.NullPointerException
Any help will be much appreciated. Thanks in advance!
Exception:
02-20 16:52:20.820: ERROR/AndroidRuntime(365): FATAL EXCEPTION: main
02-20 16:52:20.820: ERROR/AndroidRuntime(365): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{trinity.hazard.reversi/trinity.hazard.reversi.SinglePlayerActivity}: java.lang.NullPointerException
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.os.Handler.dispatchMessage(Handler.java:99)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.os.Looper.loop(Looper.java:123)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.ActivityThread.main(ActivityThread.java:4627)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at java.lang.reflect.Method.invokeNative(Native Method)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at java.lang.reflect.Method.invoke(Method.java:521)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at dalvik.system.NativeStart.main(Native Method)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): Caused by: java.lang.NullPointerException
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:100)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at trinity.hazard.reversi.SinglePlayerActivity.(SinglePlayerActivity.java:24)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at java.lang.Class.newInstanceImpl(Native Method)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at java.lang.Class.newInstance(Class.java:1429)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
02-20 16:52:20.820: ERROR/AndroidRuntime(365): ... 11 more

In your Position class, try moving the line where you create the ImageView into the constructor, but AFTER initializing myContext.

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