7
我正在使用Facebook SDK，問題是FormSubmit函數運行了兩次。它被getView函數稱爲onCreateView和statusCallback，如何解決它？爲什麼我的Facebook的android sdk登錄被調用兩次？
public class Home extends Fragment implements LoginListener {
public View rootView;
public ImageView HomeBg;
public ImageView buttonLoginLogout;
public TextView chi;
public TextView eng;
public ColorStateList oldColor;
public SharedPreferences prefs;
public EasyTracker tracker = null;
//Facebook login
private Session.StatusCallback statusCallback = new SessionStatusCallback();
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
tracker = EasyTracker.getInstance(getActivity());
prefs = getActivity().getSharedPreferences("memberData", 0);
getActivity().getActionBar().hide();
rootView = inflater.inflate(R.layout.home, container, false);
buttonLoginLogout = (ImageView) rootView.findViewById(R.id.home_connectFB);
eng = (TextView) rootView.findViewById(R.id.btn_eng);
chi = (TextView) rootView.findViewById(R.id.btn_chi);
if (Utility.getLocale(getActivity()).equals("TC")) {
chi.setTextColor(getActivity().getResources().getColor(
android.R.color.white));
oldColor = eng.getTextColors();
} else {
eng.setTextColor(getActivity().getResources().getColor(
android.R.color.white));
oldColor = chi.getTextColors();
}
eng.setOnClickListener(setChangeLangListener("EN"));
chi.setOnClickListener(setChangeLangListener("TC"));
//Facebook login
Settings.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS);
Session session = Session.getActiveSession();
if (session == null) {
if (savedInstanceState != null) {
session = Session.restoreSession(getActivity(), null, statusCallback, savedInstanceState);
}
if (session == null) {
session = new Session(getActivity());
}
Session.setActiveSession(session);
if (session.getState().equals(SessionState.CREATED_TOKEN_LOADED)) {
session.openForRead(new Session.OpenRequest(this).setCallback(statusCallback));
}
}
updateView();
return rootView;
}
@Override
public void onStart() {
super.onStart();
Session.getActiveSession().addCallback(statusCallback);
tracker.set(Fields.SCREEN_NAME, "Landing Page " + Utility.getLocale(getActivity()));
tracker.send(MapBuilder.createAppView().build());
}
@Override
public void onStop() {
super.onStop();
Session.getActiveSession().removeCallback(statusCallback);
EasyTracker.getInstance(getActivity()).activityStop(getActivity());
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(getActivity(), requestCode, resultCode, data);
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
Session session = Session.getActiveSession();
Session.saveSession(session, outState);
}
private void updateView() {
Session session = Session.getActiveSession();
if (session.isOpened()) {
// get request
if (!session.getAccessToken().equals(prefs.getString("token", "")))
new FormSubmit(getActivity(),this,tracker).execute("login", session.getAccessToken());
else
onTaskComplete(prefs.getString("token", ""),prefs.getString("memberId", ""));
} else {
buttonLoginLogout.setImageResource(R.drawable.landing_btn_connect_facebook);
buttonLoginLogout.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) { onClickLogin(); }
});
}
}
private void onClickLogin() {
Session session = Session.getActiveSession();
if (!session.isOpened() && !session.isClosed()) {
session.openForRead(new Session.OpenRequest(this).setCallback(statusCallback));
} else {
Session.openActiveSession(getActivity(), this, true, statusCallback);
}
}
private class SessionStatusCallback implements Session.StatusCallback {
@Override
public void call(Session session, SessionState state, Exception exception) {
updateView();
}
}
public OnClickListener setChangeLangListener(final String lang) {
OnClickListener changeLangListener = new OnClickListener() {
@Override
public void onClick(View arg0) {
Configuration config = new Configuration(getResources().getConfiguration());
if (Utility.getLocale(getActivity()).equals("TC") && lang.equals("EN")) {
tracker.send(MapBuilder.createEvent("menu_click","language", "switchEN", null).build());
config.locale = Locale.ENGLISH;
chi.setTextColor(oldColor);
eng.setTextColor(getActivity().getResources().getColor(
android.R.color.white));
} else if (Utility.getLocale(getActivity()).equals("EN") && lang.equals("TC")) {
tracker.send(MapBuilder.createEvent("menu_click","language", "switchTC", null).build());
config.locale = Locale.TRADITIONAL_CHINESE;
eng.setTextColor(oldColor);
chi.setTextColor(getActivity().getResources().getColor(
android.R.color.white));
}
getResources().updateConfiguration(config,getResources().getDisplayMetrics());
onConfigurationChanged(config);
}
};
return changeLangListener;
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
Intent intent = getActivity().getIntent();
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
getActivity().finish();
startActivity(intent);
}
@Override
public void onResume() {
super.onResume();
AppEventsLogger.activateApp(getActivity(),getResources().getString(R.string.app_id));
}
@Override
public void onTaskComplete(String token, String memberId) {
Toast.makeText(getActivity(), "t:" + token + "m:" + memberId, Toast.LENGTH_LONG).show();
buttonLoginLogout.setImageResource(R.drawable.landing_btn_take_a_selfie);
buttonLoginLogout.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
((LandingPage)getActivity()).tabHost.setCurrentTab(2);
}
});
}
@Override
public void onTaskFailure(String errorMsg) {
Toast.makeText(getActivity(), errorMsg, Toast.LENGTH_LONG).show();
}
public void saveMemberInfo(String token, String memberId){
SharedPreferences.Editor editor = prefs.edit();
editor.putString("token", token);
editor.putString("memberId", memberId);
editor.commit();
}
}
所有的HTML請求都有響應，如果這是連接到Facebook，很可能你得到了Reponse + Postback，這會讓你的事件觸發兩次。我對Facebook SDK不熟悉，但我會看看你正在使用的函數的API。 – Mike
非常感謝，我按照文件夾sample/SessionLoginSample – user782104