我在我的 android 应用程序中使用 Facebook，它工作得很好。
但是，我意识到每次登录时都会出现无用的屏幕，并使用“确定”和“取消”选项说“您已经授权使用此应用程序”。
我怎样才能避免或从我的应用程序中删除此屏幕。
我在 Google 上搜索，找到了一些旧 Facebook SDK 的答案但是如何使用新的 Facebook SDK（3.0 及更高版本）实现它？
这是我的代码，
public void onClick(View v)
{
Bundle myParams = new Bundle();
myParams.putString("message", " DOWNLOAD THE 'Saragama' ANDROID APP FROM " + url_android.toString()
+ ". Fully integrated with Facebook and Twitter.");
myParams.putString("name", mSharingText.getText().toString());
myParams.putString("caption", "www.saragama.com");
myParams.putString("description", "Various religios music, chants, mantras, christian songs, islamic music, quran and more on saragama");
myParams.putString("link", "http://android.saragama.com");
myParams.putString("picture", albumImageURL);
if (PlusUtilities.isInternetConnected())
{
// ~post your data
Session session = Session.getActiveSession();
if (session != null)
{
MyLog.w("session state", session.getState().toString());
if (session.getState().equals(SessionState.OPENED) || session.getState().equals(SessionState.OPENED_TOKEN_UPDATED))
{
publishStory(myParams);
}
else
{
plusUtilities1.showAlertDialog("Please login first!");
}
}
else
{
plusUtilities1.showAlertDialog("Please login first!");
}
}
else
{
plusUtilities1.showAlertDialog("Problem occured with your internet connection!");
}
}
// Facebook Login-------------------------------------------------------------------------------------
private void loginToFacebook()
{
if (PlusUtilities.isInternetConnected())
{
Session session = Session.getActiveSession();
// if session is in exceptional state
if (session.getState() == SessionState.CLOSED_LOGIN_FAILED || session.getState() == SessionState.OPENING)
{
session.closeAndClearTokenInformation();
}
if (!session.isOpened() && !session.isClosed())
{
String[] PERMISSION_ARRAY_PUBLISH =
{"publish_actions" };
List<String> PERMISSION_LIST = Arrays.asList(PERMISSION_ARRAY_PUBLISH);
session.openForPublish(new Session.OpenRequest(FacebookActivity.this).setPermissions(PERMISSION_LIST).setCallback(
statusCallback1));
}
else
{
Session.openActiveSession(this, true, statusCallback1);
}
}
else
{
plusUtilities1.showAlertDialog("Please check your internet connection!");
}
}
@Override
protected void onSaveInstanceState(Bundle outState)
{
super.onSaveInstanceState(outState);
Session session = Session.getActiveSession();
Session.saveSession(session, outState);
}
@Override
protected void onActivityResult(int requestCode, int responseCode, Intent data)
{
super.onActivityResult(requestCode, responseCode, data);
// plusUtilities1.ShowToast("onActivityResult");
MyLog.i("onActivityResult requestCode :responsecode:session state", requestCode + ":" + responseCode + ":"
+ Session.getActiveSession().getState().toString());
switch (requestCode)
{
case MyRaagaLoginActivity.REQUEST_CODE_FACEBOOK_LOGIN:
if (responseCode == RESULT_OK)
{
MyLog.e("Login", "trying to facebook Login");
Session.getActiveSession().onActivityResult(Act1, requestCode, responseCode, data);
}
else
{
plusUtilities1.ShowToast("User access denied!");
}
break;
default:
MyLog.i("case:", "default");
break;
}
}
/**
* function to get active facebook session if already exist or create the new session
*
* @param savedInstanceState
* =check if Session exist and restored in bundle during onSaveInstanceState() system call
* @author DeepakD
*/
public void GetOrCreateFacebookActiveSession(Bundle savedInstanceState)
{
Settings.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS);
Settings.addLoggingBehavior(LoggingBehavior.REQUESTS);
Session session = Session.getActiveSession();
// if session is null try to find if session is saved previously
if (session == null)
{
if (savedInstanceState != null)
{
session = Session.restoreSession(this, null, statusCallback1, savedInstanceState);
}
// if still session is null then create the new session
if (session == null)
{
session = new Session(this);
}
// set the created session as active session
Session.setActiveSession(session);
}
updateFBbutton();
}
/**
* set login or logout button
*/
private void updateFBbutton()
{
Session session = Session.getActiveSession();
if (session.isOpened())
{
FbLoginbtn.setText("FBLogout");
FbLoginbtn.setOnClickListener(new OnClickListener()
{
public void onClick(View view)
{
onClickFBLogout();
}
});
}
else
{
FbLoginbtn.setText("FBLogin");
FbLoginbtn.setOnClickListener(new OnClickListener()
{
public void onClick(View view)
{
loginToFacebook();
}
});
}
}
/**
* Logout from facebook
*/
private void onClickFBLogout()
{
Session session = Session.getActiveSession();
if (!session.isClosed())
{
session.closeAndClearTokenInformation();
plusUtilities1.ShowToast("Logout successful");
}
}
/**
* This class is used to fetch the current status of active session
*
* @author DeepakD
*
*/
private class SessionStatusCallback1 implements Session.StatusCallback
{
@Override
public void call(Session session, SessionState state, Exception exception)
{
updateFBbutton();
plusUtilities1.DissmissPD();
MyLog.w("session state", session.getState().toString());
if(session.getState()==SessionState.CLOSED_LOGIN_FAILED)
{
//login failed
plusUtilities1.ShowToast("Unable to connect,please try later..");
session.closeAndClearTokenInformation();
}
if (session.getState()== SessionState.OPENED)
{
//login successful
plusUtilities1.ShowToast("Login successful");
}
}
}
/**
* actually post the data on facebook
*
* @param myParams
* Bundle of parameters to be post
*/
private void publishStory(Bundle myParams)
{
plusUtilities1.ShowPD("Sharing data...");
Session session = Session.getActiveSession();
if (session != null)
{
// Check for publish permissions
List<String> permissions = session.getPermissions();
try
{
if (!isSubsetOf(PERMISSIONS, permissions))
{
Session.NewPermissionsRequest newPermissionsRequest = new Session.NewPermissionsRequest(this, PERMISSIONS);
session.requestNewPublishPermissions(newPermissionsRequest);
}
}
catch (Exception e1)
{
// TODO Auto-generated catch block
e1.printStackTrace();
}
Request.Callback callback = new Request.Callback()
{
public void onCompleted(Response response)
{
plusUtilities1.DissmissPD();
MyLog.w("post response", "" + response.toString());
if (response.getError() == null)
{
JSONObject graphResponse = response.getGraphObject().getInnerJSONObject();
String postId = null;
try
{
postId = graphResponse.getString("id");
}
catch (JSONException e)
{
Toast.makeText(FacebookActivity.this, "JSON error " + e.getMessage(), Toast.LENGTH_LONG)
.show();
}
catch (Exception e)
{
e.printStackTrace();
Toast.makeText(FacebookActivity.this, e.getMessage(), Toast.LENGTH_LONG).show();
}
FacebookRequestError error = response.getError();
Log.e("post response", response.toString());
if (error != null)
{
Toast.makeText(FacebookActivity.this, error.getErrorMessage(), Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(FacebookActivity.this, "Posted successfully!",
Toast.LENGTH_LONG).show();
FlurryAgent.logEvent("Audio Facebook share -" + EventName);
}
}
else
{
plusUtilities1.showAlertDialog("Something went wrong while posting!");
}
}
};
MyLog.w("BUNDLE TO BE POSTED;", myParams.toString());
Request request = new Request(session, "/me/feed", myParams, HttpMethod.POST, callback);
RequestAsyncTask task = new RequestAsyncTask(request);
task.execute();
}
}
public static boolean isSubsetOf(Collection<String> subset, Collection<String> superset)
{
for (String string : subset)
{
if (!superset.contains(string))
{
return false;
}
}
return true;
}
protected void onStart()
{
super.onStart();
MyLog.i("FacebookActivity", "onStart");
FlurryAgent.onStartSession(this, KeysCls.Flurry_Analytics_Key);
FlurryAds.displayAd(this, "AppCircle_Ads", linlayAdLayout);
if (PlusUtilities.isInternetConnected())
{
Session.getActiveSession().addCallback(statusCallback1);
}
else
{
plusUtilities1.showAlertDialog("Please check your internet connection and try again!");
}
}
/**
* convert post's simple text to text with links
*
* @param Name
* @param Link
* @return
*/
String wallpostWithLink(String Name, String Link)
{
jo = new JSONObject();
try
{
jo.put("name", Name);
jo.put("link", Link);
}
catch (Exception e)
{
e.printStackTrace();
}
return jo.toString();
}
@Override
protected void onStop()
{
super.onStop();
FlurryAgent.onEndSession(this);
}