我在android中开发了一个facebook应用程序。我的设备有默认的android facebook应用程序。当我运行我的应用程序时，如果我输入凭据，则默认的fb也会登录。当我退出我的应用程序时，默认应用程序不会被注销。那么我怎样才能从我的应用程序中获得logout default fb。我也用过SSO。但仍有同样的问题。
我的代码：
public class SampleApp extends Activity {
// Set Application ID to your registered app client_id
// See http://www.facebook.com/developers/createapp.php
public static final String APP_ID = "APP ID";
private static final String[] PERMISSIONS = new String[] {
"publish_stream", "read_stream", "offline_access" };
private TextView mText;
private Handler mHandler = new Handler();
private Facebook mFacebook;
private AsyncFacebookRunner mAsyncRunner;
byte[] raw;
private SharedPreferences mPrefs;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Make sure the app client_app has been set
if (APP_ID == null) {
Util.showAlert(this, "Warning",
"Facebook Applicaton ID must be set...");
}
// Initialize the content view
setContentView(R.layout.main);
// Get the status text line resource
mText = (TextView) SampleApp.this.findViewById(R.id.txt);
// Setup the ListView Adapter that is loaded when selecting
// "get friends"
// Define a spinner used when loading the friends over the network
// Initialize the Facebook session
mFacebook = new Facebook(APP_ID);
mAsyncRunner = new AsyncFacebookRunner(mFacebook);
mPrefs = getPreferences(MODE_PRIVATE);
String access_token = mPrefs.getString("access_token", null);
long expires = mPrefs.getLong("access_expires", 0);
if (access_token != null) {
mFacebook.setAccessToken(access_token);
}
if (expires != 0) {
mFacebook.setAccessExpires(expires);
}
}
// ////////////////////////////////////////////////////////////////////
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.d("FB Sample App", "onActivityResult(): " + requestCode);
mFacebook.authorizeCallback(requestCode, resultCode, data);
}
private class LogoutRequestListener implements RequestListener {
/** Called when the request completes w/o error */
public void onComplete(String response) {
// Only the original owner thread can touch its views
SampleApp.this.runOnUiThread(new Runnable() {
public void run() {
mText.setText("Thanks for using FB Sample App. Bye bye...");
}
});
// Dispatch on its own thread
mHandler.post(new Runnable() {
public void run() {
}
});
}
@Override
public void onComplete(String response, Object state) {
// TODO Auto-generated method stub
}
@Override
public void onIOException(IOException e, Object state) {
// TODO Auto-generated method stub
}
@Override
public void onFileNotFoundException(FileNotFoundException e,
Object state) {
// TODO Auto-generated method stub
}
@Override
public void onMalformedURLException(MalformedURLException e,
Object state) {
// TODO Auto-generated method stub
}
@Override
public void onFacebookError(FacebookError e, Object state) {
// TODO Auto-generated method stub
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
MenuItem loginItem = menu.findItem(R.id.login);
if (mFacebook.isSessionValid()) {
loginItem.setTitle("Logout");
} else {
loginItem.setTitle("Login");
}
loginItem.setEnabled(true);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
// Login/logout toggle
case R.id.login:
if (!mFacebook.isSessionValid()) {
mFacebook.authorize(this, new DialogListener() {
@Override
public void onComplete(Bundle values) {
Log.v("Entered ", "No ERRRRRRRRRRRR");
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token",
mFacebook.getAccessToken());
editor.putLong("access_expires",
mFacebook.getAccessExpires());
editor.commit();
Intent i=new Intent(SampleApp.this,second.class);
startActivity(i);
}
@Override
public void onFacebookError(FacebookError error) {
}
@Override
public void onError(DialogError e) {
}
public void onCancel() {
}
});
}else{
mFacebook.setAccessToken(null);
mFacebook.setAccessExpires(0);
AsyncFacebookRunner asyncRunner = new AsyncFacebookRunner(mFacebook);
asyncRunner.logout(this.getBaseContext(), new LogoutRequestListener());
}
break;
default:
return false;
}
return true;
}
}
}