Develop Reference

Reverse GeoCoding Android Issue

I'm having trouble converting coordinates to an actual address.
I have two variables that pull coordinates but I'm getting many errors when I tweak the code. The first error is "unreported exception IOException; must be caught or declared to be thrown" and then I add the try catch then another error pops up, "yourAddresses might not have been initialized.
I'm just trying to get the address, street, and city so I can append it into a textView.
#Override
public void onLocationChanged(Location location)
{
double latitude = location.getLongitude();
double longitude = location.getLatitude();
//t.append("\n " + location.getLongitude() + " " + location.getLatitude());
Geocoder geocoder;
List<Address> yourAddresses;
geocoder = new Geocoder(context, Locale.getDefault());
yourAddresses = geocoder.getFromLocation(latitude, longitude, 1);
if (yourAddresses.size() > 0) {
String yourAddress = yourAddresses.get(0).getAddressLine(0);
String yourCity = yourAddresses.get(0).getAddressLine(1);
String yourCountry = yourAddresses.get(0).getAddressLine(2);
}
}
Thanks!

I used this code and its works for me....
public void getAddressFromLocation(final double latitude, final double longitude,
final Context context, final Handler handler)
{
Thread thread = new Thread()
{
#Override
public void run()
{
Geocoder geocoder = new Geocoder(context, Locale.getDefault());
String result = null;
Address address = null;
try
{
List<Address> addressList = geocoder.getFromLocation(latitude, longitude, 1);
if (addressList != null && addressList.size() > 0)
{
address = addressList.get(0);
}
}
catch (Exception e)
{
Log.e(TAG, "getAddressFromLocation:run: exception while getting address from location");
e.printStackTrace();
}
finally
{
Message message = Message.obtain();
message.setTarget(handler);
if (address != null)
{
message.what = 1;
Bundle bundle = new Bundle();
bundle.putString("thoroughFare", address.getThoroughfare());
bundle.putString("subThoroughFare", address.getSubThoroughfare());
bundle.putString("city", address.getLocality());
bundle.putString("state", address.getAdminArea());
bundle.putString("country", address.getCountryName());
bundle.putString("postalCode", address.getPostalCode());
bundle.putString("subAdminArea", address.getSubAdminArea());
bundle.putString("subLocality", address.getSubLocality());
message.setData(bundle);
}
else
{
message.what = 1;
Bundle bundle = new Bundle();
result = "Latitude: " + latitude + "Longitude: " + longitude +
"\n Unable to get address for this location.";
bundle.putString("address", result);
message.setData(bundle);
}
message.sendToTarget();
}
}
};
thread.start();
}
This is my GeoCoderHandler class....
private class GeoCoderHandler extends Handler
{
#Override
public void handleMessage(Message msg)
{
switch (msg.what)
{
case 1:
String address = "";
Bundle bundle = msg.getData();
if (bundle.getString("subThoroughFare") != null)
{
if (!bundle.getString("subThoroughFare").equalsIgnoreCase("null"))
{
address = bundle.getString("subThoroughFare") + ", " +
bundle.getString("thoroughFare");
}
}
else
{
address = bundle.getString("thoroughFare");
}
tvAddress1.setText("");
tvAddress1.setText(address);
tvAddress2.setText("");
tvAddress2.setText(bundle.getString("subLocality"));
tvAddress3.setText("");
tvAddress3.setText(bundle.getString("subAdminArea"));
edtPinCode.setText("");
edtPinCode.setText(bundle.getString("postalCode"));
tvCity.setText("");
tvCity.setText(bundle.getString("city"));
tvState.setText("");
tvState.setText(bundle.getString("state"));
tvCountry.setText("");
tvCountry.setText(bundle.getString("country"));
break;
default:
tvAddress1.setText(getResources().getString(R.string.address_not_found));
tvAddress2.setText("");
tvAddress3.setText("");
edtPinCode.setText("");
tvCity.setText("");
tvState.setText("");
tvCountry.setText("");
break;
}
}
}

your need some initialized for yourAddress
List<Address> yourAddresses = new ArrayList();

Geocoder is not working in android above kitkat version

I was working with geocoder in my android app to get country name using latitude and longitude. I found that it was working good in kitkat version and below. But when i test my app in above versions it was giving null. So my question is simple that how to use geocoder above kitkat versions.
If there is any other better option instead of geocoder then please suggest me!
Thanks in advance!

I post my code for Geocoder. Follow it
//Keep this GeocodingLocation.java in a separate file.
public class GeocodingLocation {
private static final String TAG = "GeocodingLocation";
public static void getAddressFromLocation( final String locationAddress,
final Context context, final Handler handler) {
Thread thread = new Thread() {
#Override
public void run() {
Geocoder geocoder = new Geocoder(context, Locale.getDefault());
String result = null;
String latitude = null;
String longitude = null;
try {
List<Address> addressList = geocoder.getFromLocationName(locationAddress, 1);
if (addressList != null && addressList.size() > 0) {
Log.e("GeocodingLocation --> getAddressFromLocation ==>" +
addressList.toString());
Address address = (Address) addressList.get(0);
StringBuilder sb = new StringBuilder();
latitude = String.valueOf(address.getLatitude());
longitude = String.valueOf(address.getLongitude());
Logger.infoLog("GeocodingLocation --> Lat & Lang ==>" + latitude +" "+longitude);
//sb.append(address.getLatitude()).append("\n");
//sb.append(address.getLongitude()).append("\n");
}
} catch (IOException e) {
Log.e(TAG, "Unable to connect to Geocoder", e);
} finally {
Message message = Message.obtain();
message.setTarget(handler);
if (latitude != null && longitude != null) {
message.what = 1;
Bundle bundle = new Bundle();
bundle.putString("latitude", latitude);
bundle.putString("longitude", longitude);
message.setData(bundle);
} else {
message.what = 1;
Bundle bundle = new Bundle();
result = "Address: " + locationAddress +
"\n Unable to get Latitude and Longitude for this address location.";
bundle.putString("address", result);
message.setData(bundle);
}
message.sendToTarget();
}
}
};
thread.start();
}
}
call the class from your fragment.
private void getAddressLatitudeLongitude(String branchAddress) {
Log.e("getAddressLatitudeLongitude ==>" + branchAddress);
GeocodingLocation.getAddressFromLocation(branchAddress, thisActivity, new GeocoderHandler());
}
Keep this class as inner class in same fragment
private class GeocoderHandler extends Handler {
#Override
public void handleMessage(Message message) {
switch (message.what) {
case 1:
try {
Bundle bundle = message.getData();
latitude = bundle.getString("latitude");
longitude = bundle.getString("longitude");
Log.e("CreateBranch --> GeocoderHandler ==>" + latitude + " " + longitude);
}catch (Exception e){
e.printStackTrace();
}
break;
default:
latitude = null;
longitude = null;
}
latitudeList.add(latitude);
longitudeList.add(longitude);
if(latitude==null || longitude==null){
showAlertDialog("Please enter correct address", Constants.APP_NAME);
}
Log.e("Latitude list =>" + latitudeList);
Log.e("Longitude list =>" + longitudeList);
}
}
Output will get latitude and longitude. Hope this answer helps.

How to pass onReceived data between classes Android

I have 2 different class, first class Tracking.java and second class ReportingService.java. how to passing location address on ReportingService.java to Tracking.java?
private void doLogout(){
Log.i(TAG, "loginOnClick: ");
//ReportingService rs = new ReportingService();
//rs.sendUpdateLocation(boolean isUpdate, Location);
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(NetHelper.getDomainAddress(this))
.addConverterFactory(ScalarsConverterFactory.create())
.build();
ToyotaService toyotaService = retrofit.create(ToyotaService.class);
// caller
Call<ResponseBody> caller = toyotaService.logout("0,0",
AppConfig.getUserName(this),
"null");
// async task
caller.enqueue(new Callback<ResponseBody>() {
#Override
public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
try {
Log.i(TAG, "onResponse: "+response.body().string());
}catch (IOException e){}
}
#Override
public void onFailure(Call<ResponseBody> call, Throwable t) {
Log.e(TAG, "onFailure: ", t);
}
});
AppConfig.saveLoginStatus(this, AppConfig.LOGOUT);
AppConfig.storeAccount(this, "", "");
Intent intent = new Intent(this, Main2Activity.class);
startActivity(intent);
finish();
}
This code for location address
Call<ResponseBody> caller = toyotaService.logout("0,0",
AppConfig.getUserName(this),
"null");
And this is class ReportingService.java location of code get longtitude, latitude and location address from googlemap
private void sendUpdateLocation(boolean isUpdate, Location location) {
Log.i(TAG, "onLocationChanged "+location.getLongitude());
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(this, Locale.getDefault());
String street = "Unknown";
try {
addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
if (addresses != null) {
String address = addresses.get(0).getAddressLine(0);
String city = addresses.get(0).getLocality();
String state = addresses.get(0).getAdminArea();
String country = addresses.get(0).getCountryName();
String postalCode = addresses.get(0).getPostalCode();
String knowName = addresses.get(0).getFeatureName();
street = address + " " + city + " " + state + " " + country + " " + postalCode + " " + knowName;
Log.i(TAG, "street "+street);
}
} catch (IOException e) {
e.printStackTrace();
}
if (isUpdate)
NetHelper.report(this, AppConfig.getUserName(this), location.getLatitude(),
location.getLongitude(), street, new PostWebTask.HttpConnectionEvent() {
#Override
public void preEvent() {
}
#Override
public void postEvent(String... result) {
try {
int nextUpdate = NetHelper.getNextUpdateSchedule(result[0]); // in second
Log.i(TAG, "next is in " + nextUpdate + " seconds");
if (nextUpdate > 60) {
dismissNotification();
isRunning = false;
} else if (!isRunning){
showNotification();
isRunning = true;
}
handler.postDelayed(location_updater, nextUpdate * 1000 /*millisecond*/);
}catch (JSONException e){
Log.i(TAG, "postEvent error update");
e.printStackTrace();
handler.postDelayed(location_updater, getResources().getInteger(R.integer.interval) * 1000 /*millisecond*/);
}
}
});
else
NetHelper.logout(this, AppConfig.getUserName(this), location.getLatitude(),
location.getLongitude(), street, new PostWebTask.HttpConnectionEvent() {
#Override
public void preEvent() {
}
#Override
public void postEvent(String... result) {
Log.i(TAG, "postEvent logout "+result);
}
});
}
Thanks

Use this library and follow the provided example inside it.
Its for passing anything you wish to anywhere you wish.

i think just using an interface will solve your problem.
pseudo code
ReportingException.java
add this
public interface myLocationListner{
onRecievedLocation(String location);
}
private myLocationListner mylocation;
//add below line where you get street address
mylocation.onRecievedLocation(street);
then implement myLocationListner in Tracking.java
there you go :)

You can use an intent:
The intent will fire the 2nd Receiver and will pass the data into that
If BroadcastReceiver:
Intent intent = new Intent();
intent.setAction("com.example.2ndReceiverFilter");
intent.putExtra("key" , ); //put the data you want to pass on
getApplicationContext().sendBroadcast(intent);
If Service:
Intent intent = new Intent();`
intent.putExtra("key" , value ); //put the data you want to pass on
startService( ReportingService.this , Tracking.class);
in Tracking.java, to retrieve the Data you passed on:
inside onReceive, put this code first
intent.getExtras().getString("key");//if int use getInt("key")

Can't use the SASLXFacebookPlatformMechanism class in making android xmpp facebook chat client

I m trying to make a simple version facebook messenger.The code that i used has worked well for gtalk and requires facebook authentication to be used for chatting with facebook friends.For that, i have used SASLXFacebookPlatfromMechanism class where i will store the api token and api key along with the apisecret of my app. The problem is SASLXFacebookPlatfromMechanism.java class is full of errors which i cannot resolve at all.Here are my classes-
**MainActivity.java**
public class MainActivity extends ActionBarActivity {
private ArrayList<String> messages = new ArrayList();
private Handler mHandler = new Handler();
private SettingsDialog mDialog;
private EditText mRecipient;
private EditText mSendText;
private ListView mList;
private XMPPConnection connection;
/**
* Called with the activity is first created.
*/
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
Log.i("XMPPClient", "onCreate called");
setContentView(R.layout.activity_main);
mRecipient = (EditText) this.findViewById(R.id.recipient);
Log.i("XMPPClient", "mRecipient = " + mRecipient);
mSendText = (EditText) this.findViewById(R.id.sendText);
Log.i("XMPPClient", "mSendText = " + mSendText);
mList = (ListView) this.findViewById(R.id.listMessages);
Log.i("XMPPClient", "mList = " + mList);
setListAdapter();
// Dialog for getting the xmpp settings
mDialog = new SettingsDialog(this);
// Set a listener to show the settings dialog
Button setup = (Button) this.findViewById(R.id.setup);
setup.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
mHandler.post(new Runnable() {
public void run() {
mDialog.show();
}
});
}
});
// Set a listener to send a chat text message
Button send = (Button) this.findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
try
{
String to = mRecipient.getText().toString();
String text = mSendText.getText().toString();
Log.i("XMPPClient", "Sending text [" + text + "] to [" + to + "]");
Message msg = new Message(to, Message.Type.chat);
msg.setBody(text);
connection.sendPacket(msg);
messages.add(connection.getUser() + ":");
messages.add(text);
setListAdapter();
}catch(Exception e)
{
Toast.makeText(MainActivity.this, "Error="+e.getMessage(), Toast.LENGTH_LONG).show();
}
}
});
}
/**
* Called by Settings dialog when a connection is establised with the XMPP server
*
* #param connection
*/
public void setConnection (XMPPConnection connection) {
this.connection = connection;
if (connection != null) {
// Add a packet listener to get messages sent to us
PacketFilter filter = new MessageTypeFilter(Message.Type.chat);
connection.addPacketListener(new PacketListener() {
public void processPacket(Packet packet) {
Message message = (Message) packet;
if (message.getBody() != null) {
String fromName = StringUtils.parseBareAddress(message.getFrom());
Log.i("XMPPClient", "Got text [" + message.getBody() + "] from [" + fromName + "]");
messages.add(fromName + ":");
messages.add(message.getBody());
// Add the incoming message to the list view
mHandler.post(new Runnable() {
public void run() {
setListAdapter();
}
});
}
}
}, filter);
}
}
private void setListAdapter
() {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
R.layout.multi_line_list_item,
messages);
mList.setAdapter(adapter);
}
}
SettingsDialog.java
public class SettingsDialog extends Dialog implements android.view.View.OnClickListener {
private MainActivity xmppClient;
public SettingsDialog(MainActivity xmppClient) {
super(xmppClient);
this.xmppClient = xmppClient;
}
protected void onStart() {
super.onStart();
setContentView(R.layout.settings);
getWindow().setFlags(4, 4);
setTitle("XMPP Settings");
Button ok = (Button) findViewById(R.id.ok);
ok.setOnClickListener(this);
}
public void onClick(View v) {
final String host = "chat.facebook.com";
final String port = ""+5222;
final String service = "chat.facebook.com";
final String username = "*****";
final String password = "****";
new Thread() {
public void run() {
// Create a connection
ConnectionConfiguration connConfig =new ConnectionConfiguration(host, Integer.parseInt(port), service);
connConfig.setSASLAuthenticationEnabled(true);
XMPPConnection connection = new XMPPConnection(connConfig);
try {
connection.connect();
Log.i("XMPPClient", "[SettingsDialog] Connected to " + connection.getHost());
} catch (Exception ex) {
Log.e("XMPPClient", "[SettingsDialog] Failed to connect to " + connection.getHost());
Log.e("XMPPClient", ex.toString());
xmppClient.setConnection(null);
}
try {
connection.login(username, password);
Log.i("XMPPClient", "Logged in as " + connection.getUser());
// Set the status to available
Presence presence = new Presence(Presence.Type.available);
connection.sendPacket(presence);
xmppClient.setConnection(connection);
} catch (XMPPException ex) {
Log.e("XMPPClient", "[SettingsDialog] Failed to log in as " + username);
Log.e("XMPPClient", ex.toString());
xmppClient.setConnection(null);
}
}
}.start();
dismiss();
}
private String getText(int id) {
EditText widget = (EditText) this.findViewById(id);
return widget.getText().toString();
}
}
SASLXFacebookPlatformMechanism.java
public class SASLXFacebookPlatformMechanism extends SASLMechanism
{
private static final String NAME = "X-FACEBOOK-PLATFORM";
private String apiKey = "";
private String applicationSecret = "";
private String sessionKey = "";
/**
* Constructor.
*/
public SASLXFacebookPlatformMechanism(SASLAuthentication saslAuthentication)
{
super(saslAuthentication);
}
#Override
protected void authenticate() throws IOException, XMPPException
{
getSASLAuthentication().send(new AuthMechanism(NAME, ""));
}
#Override
public void authenticate(String apiKeyAndSessionKey, String host,
String applicationSecret) throws IOException, XMPPException
{
if (apiKeyAndSessionKey == null || applicationSecret == null)
{
throw new IllegalArgumentException("Invalid parameters");
}
String[] keyArray = apiKeyAndSessionKey.split("\\|", 2);
if (keyArray.length < 2)
{
throw new IllegalArgumentException(
"API key or session key is not present");
}
this.apiKey = keyArray[0];
this.applicationSecret = applicationSecret;
this.sessionKey = keyArray[1];
this.authenticationId = sessionKey;
this.password = applicationSecret;
this.hostname = host;
String[] mechanisms = { "DIGEST-MD5" };
Map<String, String> props = new HashMap<String, String>();
this.sc =
Sasl.createSaslClient(mechanisms, null, "xmpp", host, props,
this);
authenticate();
}
#Override
public void authenticate(String username, String host, CallbackHandler cbh)
throws IOException, XMPPException
{
String[] mechanisms = { "DIGEST-MD5" };
Map<String, String> props = new HashMap<String, String>();
this.sc =
Sasl.createSaslClient(mechanisms, null, "xmpp", host, props,
cbh);
authenticate();
}
#Override
protected String getName()
{
return NAME;
}
#Override
public void challengeReceived(String challenge) throws IOException
{
byte[] response = null;
if (challenge != null)
{
String decodedChallenge = new String(Base64.decode(challenge));
Map<String, String> parameters = getQueryMap(decodedChallenge);
String version = "1.0";
String nonce = parameters.get("nonce");
String method = parameters.get("method");
long callId = new GregorianCalendar().getTimeInMillis();
String sig =
"api_key=" + apiKey + "call_id=" + callId + "method="
+ method + "nonce=" + nonce + "session_key="
+ sessionKey + "v=" + version + applicationSecret;
try
{
sig = md5(sig);
} catch (NoSuchAlgorithmException e)
{
throw new IllegalStateException(e);
}
String composedResponse =
"api_key=" + URLEncoder.encode(apiKey, "utf-8")
+ "&call_id=" + callId + "&method="
+ URLEncoder.encode(method, "utf-8") + "&nonce="
+ URLEncoder.encode(nonce, "utf-8")
+ "&session_key="
+ URLEncoder.encode(sessionKey, "utf-8") + "&v="
+ URLEncoder.encode(version, "utf-8") + "&sig="
+ URLEncoder.encode(sig, "utf-8");
response = composedResponse.getBytes("utf-8");
}
String authenticationText = "";
if (response != null)
{
authenticationText =
Base64.encodeBytes(response, Base64.DONT_BREAK_LINES);
}
// Send the authentication to the server
getSASLAuthentication().send(new Response(authenticationText));
}
private Map<String, String> getQueryMap(String query)
{
Map<String, String> map = new HashMap<String, String>();
String[] params = query.split("\\&");
for (String param : params)
{
String[] fields = param.split("=", 2);
map.put(fields[0], (fields.length > 1 ? fields[1] : null));
}
return map;
}
private String md5(String text) throws NoSuchAlgorithmException,
UnsupportedEncodingException
{
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(text.getBytes("utf-8"), 0, text.length());
return convertToHex(md.digest());
}
private String convertToHex(byte[] data)
{
StringBuilder buf = new StringBuilder();
int len = data.length;
for (int i = 0; i < len; i++)
{
int halfByte = (data[i] >>> 4) & 0xF;
int twoHalfs = 0;
do
{
if (0 <= halfByte && halfByte <= 9)
{
buf.append((char) ('0' + halfByte));
}
else
{
buf.append((char) ('a' + halfByte - 10));
}
halfByte = data[i] & 0xF;
} while (twoHalfs++ < 1);
}
return buf.toString();
}
#Override
protected String getAuthenticationText(String arg0, String arg1, String arg2) {
// TODO Auto-generated method stub
return null;
}
#Override
protected String getChallengeResponse(byte[] arg0) {
// TODO Auto-generated method stub
return null;
}
}
The code shows error stating
"The method send(String) in the type SASLAuthentication is not applicable for arguments(Response).The constructor Response(String) is undefined"
in the line-->"getSASLAuthentication().send(new Response(authenticationText));"
I am also confused on how to use this SASLXFacebookPlatformMechanism.java class in my MainActivity.class.I have been trying to get a sense of how it works but failing.A complete guideline on how to develop a xmpp facebook chat client using asmack library would be appreciated since the internet lacks enough documentation on it.Thanks.
[I have the apikeys and apitokens,so the empty string will not remain empty]

linkedin: Message not getting posted

I'm doing linkedin integration for sharing the data in android, after giving the username and password and clicked on "sign in and allow" button i'm not able to move to the next page instead coming back to the previous page, and also data not posted on the wall, i tried out many tutorials, links, but could not findout my mistake and struggling alot, can anyone please help me.
here's my MainActivity code
public class MainActivity extends Activity {
public static final String CONSUMER_KEY = "key";
public static final String CONSUMER_SECRET = "secret";
public static final String APP_NAME = "rebuix";
public static final String OAUTH_CALLBACK_SCHEME = "x-oauthflow-linkedin";
public static final String OAUTH_CALLBACK_HOST = "litestcalback";
public static final String OAUTH_CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST;
LinkedInOAuthService oAuthService = LinkedInOAuthServiceFactory
.getInstance().createLinkedInOAuthService(CONSUMER_KEY,
CONSUMER_SECRET);
LinkedInApiClientFactory factory = LinkedInApiClientFactory
.newInstance(CONSUMER_KEY, CONSUMER_SECRET);
LinkedInRequestToken liToken;
LinkedInApiClient client;
#SuppressLint({ "NewApi", "NewApi", "NewApi" })
Button btnLinkedin;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}
Button btnLinkedinMain = (Button) findViewById(R.id.btnLinkedin);
btnLinkedinMain.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (v.getId() == R.id.btnLinkedin) {
oAuthService = LinkedInOAuthServiceFactory.getInstance()
.createLinkedInOAuthService(Constants.CONSUMER_KEY,
Constants.CONSUMER_SECRET);
System.out.println("oAuthService : " + oAuthService);
factory = LinkedInApiClientFactory.newInstance(
Constants.CONSUMER_KEY, Constants.CONSUMER_SECRET);
liToken = oAuthService
.getOAuthRequestToken(Constants.OAUTH_CALLBACK_URL);
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(liToken
.getAuthorizationUrl()));
i.putExtra( "sms_body", false );
try
{
startActivity(i);
} catch (ActivityNotFoundException e) {
// Display some sort of error message here.
}
}
}
protected void onNewIntent(Intent intent) {
try {
linkedInImport(intent);
} catch (NullPointerException e) {
e.printStackTrace();
}
}
private void linkedInImport(Intent intent) {
String verifier = intent.getData().getQueryParameter("oauth_verifier");
System.out.println("liToken " + liToken);
System.out.println("verifier " + verifier);
LinkedInAccessToken accessToken = oAuthService.getOAuthAccessToken(
liToken, verifier);
client = factory.createLinkedInApiClient(accessToken);
// client.postNetworkUpdate("LinkedIn Android app test");
Person profile = client.getProfileForCurrentUser(EnumSet.of(
ProfileField.ID, ProfileField.FIRST_NAME,
ProfileField.LAST_NAME, ProfileField.HEADLINE));
System.out.println("First Name :: " + profile.getFirstName());
System.out.println("Last Name :: " + profile.getLastName());
System.out.println("Head Line :: " + profile.getHeadline());
};
});
}
}

try out this tutorial...you will get message post feature in this tutorial..and for step by step integration in your app see this link... http://code.google.com/p/socialauth-android/wiki/Linkedin
https://github.com/srivastavavivek1987/LinkedIn-Connection-in-Android