I am trying to get data from a server and post it on screen and push with notification. The data is a random number and it's changing second by second.
On opening, the server is working on background and the data is receiving but data is posting on screen one time, it isn't changing and I can't get notification. With button, the data is perfectly posting on screen and it's changing second by second but I can't get notification again.
import android.view.View;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.NotificationCompat;
import androidx.core.app.NotificationManagerCompat;
import android.os.Bundle;
import com.star_zero.sse.EventHandler;
import com.star_zero.sse.EventSource;
import com.star_zero.sse.MessageEvent;
//STAR-ZERO/sse-android
public class MainActivity extends AppCompatActivity {
static TextView s;
String a =null;
private final String CHANNEL_ID = "server_notifications";
private final int NOTIFICATIONS_ID = 1;
public EventSource eventSource;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
s=findViewById(R.id.random);
final NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
final NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID);
eventSource = new EventSource("path", new EventHandler() {
#Override
public void onOpen() {
}
#Override
public void onMessage(MessageEvent messageEvent) {
a=messageEvent.getData();
try {
builder.setPriority(NotificationCompat.PRIORITY_MAX)
.setAutoCancel(true)
.setContentText(a)
.setContentTitle("ALERT!!!")
.setSmallIcon(R.drawable.noti_icon);
notificationManager.notify (NOTIFICATIONS_ID,builder.build());
s.setText(a);
}
catch (Exception e){
e.printStackTrace();
}
}
#Override
public void onError(Exception e) {
try {
s.setText("error");
}
catch (Exception d) {
d.printStackTrace();
}
}
});
eventSource.connect();
findViewById(R.id.button_open).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
eventSource.connect();
}
});
findViewById(R.id.button_close).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
eventSource.close();
}
});
}
}
You should not build a new notification on each onMessage instead, maintain a global notification reference and update the content. See this response for more details: Update text of notification, not entire notification
Related
Can anyone help me debug which part of my code is the reason why it keeps crashing? I've been trying to figure out which part is wrong, I got the code online and applied it on my own but I had troubles on this part where it keeps saying app is
I created different functions to figure out which part is wrong, thank you.
in my logcat it says:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.intern()' on a null object reference
Mainactivty
import androidx.appcompat.app.AppCompatActivity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
private TextView tv_time;
private TextView tv_amount;
private ImageView iv_status_01;
private ImageView iv_status_02;
private ImageView iv_status_03;
private ImageView iv_status_04;
private ImageView iv_status_05;
private ImageView iv_status_06;
private ImageView iv_complete;
private Intent serviceInent = null;
public static String status1;
public static String status2;
public static String status3;
public static String status4;
public static String status5;
public static String status6;
private IntentFilter intentFilter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
intentFilter = new IntentFilter();
intentFilter.addAction(status1);
intentFilter.addAction(status2);
intentFilter.addAction(status3);
intentFilter.addAction(status4);
intentFilter.addAction(status5);
intentFilter.addAction(status6);
init();
}
private void init(){
tv_amount = findViewById(R.id.tv_amount);
tv_time = findViewById(R.id.tv_time);
Date date = new Date();
Locale philippineLocale = new Locale.Builder().setLanguage("en").setRegion("PH").build();
tv_time.setText(getDate(date, philippineLocale));
tv_amount.setText("Total Amount :\n500.00");
serviceInent = new Intent(this, DeliveryService.class);
startService(new Intent(this, DeliveryService.class));
}
private String getDate(Date date, Locale locale) {
DateFormat formatter = new SimpleDateFormat("EEEE \nMMMM dd, yyyy", locale);
return formatter.format(date);
}
#Override
public void onResume() {
super.onResume();
registerReceiver(mReceiver, intentFilter);
}
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(status1)) {
iv_status_01.setImageResource(R.drawable.box_check);
}
else if (intent.getAction().equals(status2)) {
iv_status_02.setImageResource(R.drawable.box_check);
}
else if (intent.getAction().equals(status3)) {
iv_status_03.setImageResource(R.drawable.box_check);
}
else if (intent.getAction().equals(status4)) {
iv_status_04.setImageResource(R.drawable.box_check);
}
else if (intent.getAction().equals(status5)) {
iv_status_05.setImageResource(R.drawable.box_check);
}
else if (intent.getAction().equals(status5)) {
iv_status_06.setImageResource(R.drawable.box_check);
}
}
};
#Override
protected void onPause() {
unregisterReceiver(mReceiver);
super.onPause();
}
}
Deliveryservice:
import android.annotation.TargetApi;
import android.app.Service;
import android.content.Intent;
import android.os.Build;
import android.os.IBinder;
import android.util.Log;
public class DeliveryService extends Service {
private String LOG_TAG = null;
#Override
public void onCreate() {
super.onCreate();
LOG_TAG = this.getClass().getSimpleName();
Log.i(LOG_TAG, "In onCreate");
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(LOG_TAG, "In onStartCommand");
new Thread(new Runnable() {
public void run() {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Intent broadcastIntent = new Intent();
broadcastIntent.setAction(MainActivity.status1);
sendBroadcast(broadcastIntent);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
broadcastIntent.setAction(MainActivity.status2);
sendBroadcast(broadcastIntent);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
broadcastIntent.setAction(MainActivity.status3);
sendBroadcast(broadcastIntent);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
broadcastIntent.setAction(MainActivity.status4);
sendBroadcast(broadcastIntent);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
broadcastIntent.setAction(MainActivity.status5);
sendBroadcast(broadcastIntent);
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
broadcastIntent.setAction(MainActivity.status6);
sendBroadcast(broadcastIntent);
}
}).start();
return START_REDELIVER_INTENT;
}
#Override
public IBinder onBind(Intent intent) {
Log.i(LOG_TAG, "In onBind");
return null;
}
#TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
#Override
public void onTaskRemoved(Intent rootIntent) {
super.onTaskRemoved(rootIntent);
Log.i(LOG_TAG, "In onTaskRemoved");
}
public void onDestroy() {
super.onDestroy();
Log.i(LOG_TAG, "In onDestroy");
}
}
thank you.
You should initialize strings used as Action (like status1); otherwise, NullProinterException will be thrown.
i want to make an application that i can run it over voice like siri or google assistant, so in order to make it i have to implement the code in a background or foreground service which will run speech recognizer
so is this possible,because of the limitation of the working services on android Oreo and higher this make me stuck in the middle of nowhere
and i'm not so professional so i could figure this out myself
i have tried to make a foreground service with IntentService so that it could make the work on the background without freezing the UI
and the Speech recognizer didn't work
package com.example.intentservice;
import android.app.IntentService;
import android.app.Notification;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.PowerManager;
import android.os.SystemClock;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.speech.tts.TextToSpeech;
import android.util.Log;
import android.widget.Toast;
import androidx.annotation.Nullable;
import java.util.List;
import java.util.Locale;
import static com.example.intentservice.App.CHANNEL_ID;
public class ExampleService extends IntentService {
public static final String TAG = "ExampleService";
private PowerManager.WakeLock wakeLock;
private TextToSpeech textToSpeech;
private SpeechRecognizer recognizer;
#Override
public void onCreate() {
super.onCreate();
Log.e(TAG, "onCreate");
initRec();
startListening();
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "ExampleService:wakelock");
wakeLock.acquire();
Log.e(TAG, "wakelock acquired");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Notification notification = new Notification.Builder(this, CHANNEL_ID)
.setContentTitle("noti")
.setContentText("running")
.build();
startForeground(1, notification);
}
}
private void startListening() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS,1);
recognizer.startListening(intent);
}
private void initRec() {
if (SpeechRecognizer.isRecognitionAvailable(this)) {
recognizer = SpeechRecognizer.createSpeechRecognizer(this);
recognizer.setRecognitionListener(new RecognitionListener() {
#Override
public void onReadyForSpeech(Bundle bundle) {
}
#Override
public void onBeginningOfSpeech() {
}
#Override
public void onRmsChanged(float v) {
}
#Override
public void onBufferReceived(byte[] bytes) {
}
#Override
public void onEndOfSpeech() {
}
#Override
public void onError(int i) {
}
#Override
public void onResults(Bundle bundle) {
List<String> res = bundle.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
Toast.makeText(ExampleService.this, res.get(0), Toast.LENGTH_SHORT).show();
}
#Override
public void onPartialResults(Bundle bundle) {
}
#Override
public void onEvent(int i, Bundle bundle) {
}
});
}
}
public ExampleService() {
super("ExampleService");
// to create service again
setIntentRedelivery(true);
}
// this just to test the code
#Override
protected void onHandleIntent(#Nullable Intent intent) {
Log.e(TAG, "onHandleIntent");
String string = intent.getStringExtra("key");
for (int i = 0; i < 10; i++) {
Log.e(TAG, string + "-" + i);
// Toast.makeText(this, "i", Toast.LENGTH_SHORT).show();
SystemClock.sleep(1000);
}
}
#Override
public void onDestroy() {
super.onDestroy();
Log.e(TAG, "onDestroy");
wakeLock.release();
Log.e(TAG, "wakelock realised");
}
}
So, I want to create a text to speech without the use of textfield and button in Android Studio. For example when I open the app it will say "WELCOME TO MY APP" without text field or any button. How can I do that? Need your help.
You could do like below:
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.speech.tts.TextToSpeech;
import java.util.Locale;
public class MainActivity extends Activity {
TextToSpeech t1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
t1 = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if (status != TextToSpeech.ERROR) {
t1.setLanguage(Locale.ENGLISH);
}
}
});
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
t1.speak("welcome to my app", TextToSpeech.QUEUE_FLUSH, null);
}
}, 100);
}
public void onPause() {
if (t1 != null) {
t1.stop();
t1.shutdown();
}
super.onPause();
}
}
codes are self explanatory and I tested it with successful result.
Just add this in your onCreate():
myTTS = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if (status != TextToSpeech.ERROR) {
// replace this Locale with whatever you want
Locale localeToUse = new Locale("en","US");
myTTS.setLanguage(localeToUse);
myTTS.speak("Hi, Welcome to my app!", TextToSpeech.QUEUE_FLUSH, null);
}
}
});
I'm working on an application to communicate with a raspberry pi. The app communicates with the server via a socket connection.
I'm currently able to building up the communication and holding it in a service. But my goal is to change from activity A to activity B. The problem is, that my application destroys the service when im switching the activities. Is there a way to avoid this?
Activity A starts the service and when im starting Activity B i bind it to the activity to call the methods in the service class. But it isn't the same instance.
How could i solve this?
Code
ConnectActivity
package com.example.domen.twitchdronev3;
import android.content.Intent;
import android.os.Parcelable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class ConnectActivity extends AppCompatActivity {
private int port = 3000;
private String ip = "localhost";
private Intent serviceIntent, activityIntent;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_connect);
Toast.makeText(getApplicationContext(), "Starte App...", Toast.LENGTH_LONG).show();
activityIntent = new Intent(this, ControllActivity.class);
serviceIntent = new Intent(this, ClientService.class);
serviceIntent.putExtra("ip", ip);
serviceIntent.putExtra("port", port);
Button btnActivity = (Button) findViewById(R.id.changeActivity);
btnActivity.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startService(serviceIntent);
activityIntent.putExtra("Intent", (Parcelable) serviceIntent);
startActivity(activityIntent);
}
});
}
// destroys the Activity
#Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(getApplicationContext(), "Destroy (ConnectActivity)", Toast.LENGTH_LONG).show();
}
// Activity stopping
#Override
protected void onStop() {
super.onStop();
}
}
ControllActivity
package com.example.domen.twitchdronev3;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class ControllActivity extends AppCompatActivity {
public static final String TAG = "ControllActivity";
private ClientService clientservice;
private Intent serviceIntent;
private boolean isBound;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_controll);
Bundle extras = getIntent().getExtras();
serviceIntent = extras.getParcelable("Intent");
Button btnDisconnect = (Button) findViewById(R.id.btnDisconnect);
btnDisconnect.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
doBindToService();
}
});
}
// destroys the Activity
#Override
public void onDestroy(){
super.onDestroy();
Toast.makeText(getApplicationContext(), "Destroy (ControllActivity)", Toast.LENGTH_LONG).show();
doUnbindToService();
stopService(serviceIntent);
}
// Functions to BIND and UNBIND the SERVICE
// bind to Service
public void doBindToService(){
if(!isBound) {
Toast.makeText(this, "(doBindToService) Binding...", Toast.LENGTH_LONG).show();
isBound = bindService(serviceIntent, myConnection, Context.BIND_AUTO_CREATE);
}
}
// Unbind to Service
public void doUnbindToService(){
Toast.makeText(this, "(doUnbindToService) Unbinding...", Toast.LENGTH_LONG).show();
unbindService(myConnection);
isBound = false;
}
private ServiceConnection myConnection = new ServiceConnection(){
public static final String TAG = "ConnectActivity";
#Override
public void onServiceConnected(ComponentName className, IBinder service){
Log.i(TAG, "BOUND SERVICE CONNECTED");
clientservice = ((ClientService.ClientBinder) service).getService();
isBound = true;
}
#Override
public void onServiceDisconnected(ComponentName name){
Log.i(TAG, "BOUND SERVICE DISCONNECTED");
clientservice = null;
isBound = false;
}
};
}
ClientService
package com.example.domen.twitchdronev3;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
/**
* Created by ViTrex on 12.02.2018.
*/
public class ClientService extends Service {
private static final String TAG = "ClientService";
private final IBinder mBinder = new ClientBinder();
private PrintWriter out;
private Socket socket;
private String ip = "";
private int port = 0;
private Thread backgroundThread;
// the class used for the client binder
public class ClientBinder extends Binder {
ClientService getService() {
// returns the instance of ClientService
// so the client can access the public methods
return ClientService.this;
}
}
//SETTER
public void setIP(String ip) {
this.ip = ip;
}
public void setPort(int port) {
this.port = port;
}
//GETTER
public String getIP() {
return this.ip;
}
public int getPort() {
return this.port;
}
#Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "onCreate...");
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "onStartCommand", Toast.LENGTH_LONG).show();
if(intent != null){
setIP(intent.getStringExtra("ip"));
setPort(intent.getIntExtra("port", 3000));
}
return START_NOT_STICKY;
}
#Override
public IBinder onBind(Intent intent) {
Log.i(TAG, "onBind called...");
Toast.makeText(this, getIP() + " " + getPort(), Toast.LENGTH_LONG).show();
backgroundThread = new Thread(new Runnable() {
#Override
public void run() {
buildConnection();
}
});
backgroundThread.start();
return mBinder;
}
private void buildConnection() {
Log.i(TAG, "Try to build up a connection ...");
synchronized (this) {
try {
this.socket = new Socket(getIP(), getPort());
this.out = new PrintWriter(this.socket.getOutputStream(), true);
Log.i(TAG, "Connected");
} catch (IOException ioe) {
Log.i(TAG, ioe.getMessage());
this.socket = null;
} catch (Exception e) {
e.printStackTrace();
}
}
}
#Override
public void onDestroy() {
super.onDestroy();
Log.i(TAG, "Close Service");
Thread dummy = backgroundThread;
backgroundThread = null;
if (dummy != null)
dummy.interrupt();
if (this.socket != null) {
try {
this.out.close();
this.socket.close();
Log.i(TAG, "Close Socket");
} catch (IOException ioe) {
Log.i(TAG, "ERROR: Close Socket");
}
}
}
}
You say:
Activity A starts the service and when I'm starting Activity B I bind
it to the activity to call the methods in the service class. But it
isn't the same instance.
How do you know it is not the same instance (presumably you mean of the service instance)?
I think your code is o.k. to run on older devices (It runs o.k. on my device. pre-API26, I think permissions changed after then so maybe more code needed. See NOTE at the end of this answer).
Don't you want START_STICKY ?
I would add this code (read the Intent data that was setup by Activity A) to your ClientService.java:
#Override
public int onStartCommand(Intent intent, int flags, int startId)
{
String a_ip = intent.getStringExtra("ip");
int a_port = intent.getIntExtra("port",-1);
Log.i(TAG, "onStartCommand called...with " + "ip:" + a_ip + "and port:"+ a_port);
setIP(a_ip);
setPort(a_port);
return START_NOT_STICKY;//don't you want START_STICKY ?
}
Note: If your app targets API level 26 or higher, the system imposes
restrictions on using or creating background services unless the app
itself is in the foreground. If an app needs to create a foreground
service, the app should call StartForegroundService(). That method
creates a background service, but the method signals to the system
that the service will promote itself to the foreground. Once the
service has been created, the service must call its startForeground()
method within five seconds. From here
I want to achieve Facebook Integration in my app. At this point of time, I have the login and post to wall functionality, but the wall post I have is only like the simple wall post.
I want to achieve this. Just like in every game, they have this kind of facebook feed..
This is the current code I have..
package com.example.facebooktrial;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import com.facebook.android.AsyncFacebookRunner;
import com.facebook.android.DialogError;
import com.facebook.android.Facebook;
import com.facebook.android.Facebook.DialogListener;
import com.facebook.android.FacebookError;
#SuppressWarnings("deprecation")
public class AndroidFacebookConnectActivity extends Activity {
Button btnFbLogin;
Button btnPostToWall;
// Your Facebook APP ID
private static String APP_ID = "593769430655402"; // Replace your App ID here
// Instance of Facebook Class
private Facebook facebook;
private AsyncFacebookRunner mAsyncRunner;
String FILENAME = "AndroidSSO_data";
private SharedPreferences mPrefs;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnFbLogin = (Button) findViewById(R.id.btnFbLogin);
btnPostToWall = (Button) findViewById(R.id.btnFbPost);
facebook = new Facebook(APP_ID);
mAsyncRunner = new AsyncFacebookRunner(facebook);
btnFbLogin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
loginToFacebook();
}
});
btnPostToWall.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
postToWall();
}
});
}
#SuppressWarnings("deprecation")
public void loginToFacebook() {
mPrefs = getPreferences(MODE_PRIVATE);
String access_token = mPrefs.getString("access_token", null);
long expires = mPrefs.getLong("access_expires", 0);
if (access_token != null) {
facebook.setAccessToken(access_token);
}
if (expires != 0) {
facebook.setAccessExpires(expires);
}
if (!facebook.isSessionValid()) {
facebook.authorize(this,
new String[] { "email", "publish_stream" },
new DialogListener() {
#Override
public void onCancel() {
// Function to handle cancel event
}
#Override
public void onComplete(Bundle values) {
// Function to handle complete event
// Edit Preferences and update facebook acess_token
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token",
facebook.getAccessToken());
editor.putLong("access_expires",
facebook.getAccessExpires());
editor.commit();
}
#Override
public void onError(DialogError error) {
// Function to handle error
}
#Override
public void onFacebookError(FacebookError fberror) {
// Function to handle Facebook errors
}
});
}
}
#SuppressWarnings("deprecation")
public void postToWall() {
// post on user's wall.
facebook.dialog(this, "feed", new DialogListener() {
#Override
public void onFacebookError(FacebookError e) {
}
#Override
public void onError(DialogError e) {
}
#Override
public void onComplete(Bundle values) {
}
#Override
public void onCancel() {
}
});
}
}
I found the solution. Just make use of a Bundle where you'll store all the necessary information like the picture, name, link and so on.. After that, include that bundle in the Facebook dialog as an argument..
#SuppressWarnings("deprecation")
public void postToWall() {
// post on user's wall.
Bundle params = new Bundle();
params.putString("name", "Check it out, I am playing FLIP game!");
params.putString("caption", "Come on FLIP with me");
params.putString("description", "FLIP!");
params.putString("picture", "http://www.rawk.com/media/images/uploaded/products/2099/flip-hkd-black-complete-skateboard.3043.full.jpg");
facebook.dialog(this, "feed",params, new DialogListener() {
#Override
public void onFacebookError(FacebookError e) {
}
#Override
public void onError(DialogError e) {
}
#Override
public void onComplete(Bundle values) {
}
#Override
public void onCancel() {
}
});
}