Parse with Facebook login - Possibly since APK v42 or Graph API v2.4

Question

Note: I have since edited this question's summary as I believe the focus must shift from Android APIs to Facebook itself.

Ever since my devices updated to Facebook v42, or since Facebook updated it's Graph API to v2.4 (7th August), my app has failed to login. My Samsung S6 (API 22) failed initially, and 3 days later when my HTC (API 21) updated the Facebook app it too failed to login when it had been successful until then.

Initial Steps Taken:

• I have attempted to remove the app from the test user's facebook permissions and re-add it - in this case, it asks to allow permissions then fails.
• I have tested multiple test users and all fail.
• I've disabled the pre-installed Facebook app - this allows for a webview to be the method of login, but it still fails. Taken from top answer at Facebook login fails on some devices.

UPDATE 1:

ParseException taken from comments: "User logged in as different Facebook user."

If I log in with my Facebook credentials, the app does not give an error. As I am not a registered test user, it should create a user in the Parse database and continue to the MainActivity. Instead, the LoginActivity remains and my data is not added to the database.

UPDATE 2:

My HTC running 5.0 just updated the Facebook app today and now the same error Toast is appearing ("Facebook login failed"). I disabled and uninstalled the app but the Toast still appears.

UPDATE 3:

I have updated the Parse SDK, and changed my dependencies to reflect the latest Facebook SDK (4.5.0). Same error still occurring.

UPDATE 4:

The app logs in successfully on any emulator that does not have a native Facebook app.

---

ParseLoginFragment - where toast is implemented

private LogInCallback facebookLoginCallbackV4 = new LogInCallback() {
        @Override
        public void done(ParseUser user, ParseException e) {
            if (isActivityDestroyed()) {
                return;
            }

            if (user == null) {
                loadingFinish();
                if (e != null) {
                    showToast(R.string.com_parse_ui_facebook_login_failed_toast);
                    debugLog(getString(R.string.com_parse_ui_login_warning_facebook_login_failed) +
                            e.toString());
                }
            } else if (user.isNew()) {
              // rest of code

LogCat with Native Facebook App Disabled:

    08-14 22:50:28.151  30719-30719/com.guile.occ I/InjectionManager﹕ Inside getClassLibPath + mLibMap{0=, 1=}
08-14 22:50:28.151  30719-30719/com.guile.occ I/InjectionManager﹕ Inside getClassLibPath caller
08-14 22:50:28.191  30719-30739/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false
08-14 22:50:28.191  30719-30739/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isShipBuild true
08-14 22:50:28.191  30719-30739/com.guile.occ I/System.out﹕ (HTTPLog)-Thread-32296-266222247: SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false
08-14 22:50:28.191  30719-30739/com.guile.occ I/System.out﹕ (HTTPLog)-Thread-32296-266222247: SMARTBONDING_FEATURE_ENABLED is true
08-14 22:50:28.191  30719-30739/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false
08-14 22:50:28.211  30719-30719/com.guile.occ D/InjectionManager﹕ InjectionManager
08-14 22:50:28.211  30719-30719/com.guile.occ D/InjectionManager﹕ fillFeatureStoreMap com.guile.occ
08-14 22:50:28.211  30719-30719/com.guile.occ I/InjectionManager﹕ Constructor com.guile.occ, Feature store :{}
08-14 22:50:28.211  30719-30719/com.guile.occ I/InjectionManager﹕ featureStore :{}
08-14 22:50:28.211  30719-30719/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:50:28.211  30719-30719/com.guile.occ I/Timeline﹕ Timeline: Activity_launch_request id:com.guile.occ time:88929116
08-14 22:50:28.221  30719-30719/com.guile.occ D/Activity﹕ performCreate Call Injection manager
08-14 22:50:28.221  30719-30719/com.guile.occ I/InjectionManager﹕ dispatchOnViewCreated > Target : com.guile.occ.LoginActivity isFragment :false
08-14 22:50:28.231  30719-30719/com.guile.occ D/Activity﹕ performCreate Call Injection manager
08-14 22:50:28.241  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor mIsFloating : false
08-14 22:50:28.241  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor flags : -2139029248
08-14 22:50:28.271  30719-30719/com.guile.occ I/InjectionManager﹕ dispatchOnViewCreated > Target : com.parse.ui.ParseLoginActivity isFragment :false
08-14 22:50:28.271  30719-30719/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:50:28.281  30719-30754/com.guile.occ D/OpenGLRenderer﹕ Use EGL_SWAP_BEHAVIOR_PRESERVED: true
08-14 22:50:28.281  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:50:28.281  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:50:28.291  30719-30719/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:50:28.311  30719-30754/com.guile.occ D/libEGL﹕ loaded /vendor/lib64/egl/libGLES_mali.so
08-14 22:50:28.331  30719-30754/com.guile.occ I/OpenGLRenderer﹕ Initialized EGL, version 1.4
08-14 22:50:28.331  30719-30754/com.guile.occ I/OpenGLRenderer﹕ HWUI protection enabled for context ,  &this =0x7f7d8d6b20 ,&mEglDisplay = 1 , &mEglConfig = 2107568816
08-14 22:50:28.331  30719-30754/com.guile.occ D/OpenGLRenderer﹕ Get maximum texture size. GL_MAX_TEXTURE_SIZE is 8192
08-14 22:50:28.331  30719-30754/com.guile.occ D/OpenGLRenderer﹕ Enabling debug mode 0
08-14 22:50:28.331  30719-30754/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [1440x2560]-format:1
08-14 22:50:28.451  30719-30719/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@38cba1f0 time:88929356
08-14 22:50:28.451  30719-30719/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@2e8ef184 time:88929358
08-14 22:50:29.061  30719-30739/com.guile.occ I/System.out﹕ KnoxVpnUidStorageknoxVpnSupported API value returned is false
08-14 22:50:37.661  30719-30719/com.guile.occ D/ViewRootImpl﹕ ViewPostImeInputStage ACTION_DOWN
08-14 22:50:37.731  30719-30855/com.guile.occ E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.AttributionIdProvider
08-14 22:50:37.731  30719-30719/com.guile.occ I/Timeline﹕ Timeline: Activity_launch_request id:com.guile.occ time:88938639
08-14 22:50:37.771  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor mIsFloating : false
08-14 22:50:37.771  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor flags : 8454400
08-14 22:50:37.771  30719-30719/com.guile.occ D/Activity﹕ performCreate Call Injection manager
08-14 22:50:37.771  30719-30719/com.guile.occ I/InjectionManager﹕ dispatchOnViewCreated > Target : com.facebook.FacebookActivity isFragment :false
08-14 22:50:37.771  30719-30719/com.guile.occ E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.PlatformProvider
08-14 22:50:37.771  30719-30719/com.guile.occ E/ActivityThread﹕ Failed to find provider info for com.facebook.wakizashi.provider.PlatformProvider
08-14 22:50:37.801  30719-30719/com.guile.occ I/WebViewFactory﹕ Loading com.google.android.webview version 44.0.2403.90 (code 240309050)
08-14 22:50:37.801  30719-30719/com.guile.occ I/InjectionManager﹕ Inside getClassLibPath caller
08-14 22:50:37.801  30719-30719/com.guile.occ I/LibraryLoader﹕ Time to load native libraries: 0 ms (timestamps 8709-8709)
08-14 22:50:37.801  30719-30719/com.guile.occ I/LibraryLoader﹕ Expected native library version number "",actual native library version number ""
08-14 22:50:37.811  30719-30719/com.guile.occ V/WebViewChromiumFactoryProvider﹕ Binding Chromium to main looper Looper (main, tid 1) {23858b22}
08-14 22:50:37.811  30719-30719/com.guile.occ I/LibraryLoader﹕ Expected native library version number "",actual native library version number ""
08-14 22:50:37.811  30719-30719/com.guile.occ I/chromium﹕ [INFO:library_loader_hooks.cc(120)] Chromium logging enabled: level = 0, default verbosity = 0
08-14 22:50:37.821  30719-30719/com.guile.occ I/BrowserStartupController﹕ Initializing chromium process, singleProcess=true
08-14 22:50:37.821  30719-30719/com.guile.occ W/art﹕ Attempt to remove local handle scope entry from IRT, ignoring
08-14 22:50:37.821  30719-30719/com.guile.occ E/SysUtils﹕ ApplicationContext is null in ApplicationStatus
08-14 22:50:37.831  30719-30719/com.guile.occ W/chromium﹕ [WARNING:resource_bundle.cc(285)] locale_file_path.empty()
08-14 22:50:37.831  30719-30719/com.guile.occ E/libEGL﹕ validate_display:255 error 3008 (EGL_BAD_DISPLAY)
08-14 22:50:37.831  30719-30719/com.guile.occ E/libEGL﹕ validate_display:255 error 3008 (EGL_BAD_DISPLAY)
08-14 22:50:37.841  30719-30871/com.guile.occ W/AudioManagerAndroid﹕ Requires BLUETOOTH permission
08-14 22:50:37.861  30719-30719/com.guile.occ W/art﹕ Attempt to remove local handle scope entry from IRT, ignoring
08-14 22:50:37.871  30719-30719/com.guile.occ W/AwContents﹕ onDetachedFromWindow called when already detached. Ignoring
08-14 22:50:37.881  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor mIsFloating : false
08-14 22:50:37.881  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor flags : 8454400
08-14 22:50:37.881  30719-30719/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:50:37.891  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:50:37.891  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:50:37.891  30719-30719/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:50:37.911  30719-30719/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:50:37.911  30719-30754/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [1440x2560]-format:1
08-14 22:50:37.921  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:50:37.921  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:50:37.921  30719-30719/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:50:37.921  30719-30754/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [1440x2560]-format:1
08-14 22:50:37.931  30719-30869/com.guile.occ W/chromium﹕ [WARNING:data_reduction_proxy_config.cc(423)] SPDY proxy OFF at startup
08-14 22:50:38.001  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor mIsFloating : true
08-14 22:50:38.001  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor flags : 8388610
08-14 22:50:38.041  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:50:38.041  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:50:38.041  30719-30719/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:50:38.041  30719-30754/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [667x461]-format:1
08-14 22:50:38.061  30719-30719/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@188ff958 time:88938965
08-14 22:50:38.061  30719-30719/com.guile.occ V/ActivityThread﹕ updateVisibility : ActivityRecord{30111b2c token=android.os.BinderProxy@38cba1f0 {com.guile.occ/com.parse.ui.ParseLoginActivity}} show : true
08-14 22:50:40.631  30719-30719/com.guile.occ W/BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 30719
08-14 22:50:41.221  30719-30719/com.guile.occ E/ViewRootImpl﹕ sendUserActionEvent() mView == null
08-14 22:50:44.081  30719-30719/com.guile.occ D/ViewRootImpl﹕ ViewPostImeInputStage ACTION_DOWN
08-14 22:50:44.211  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:50:44.211  30719-30719/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:50:44.231  30719-30719/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:50:44.241  30719-30754/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [667x461]-format:1
08-14 22:50:45.901  30719-30719/com.guile.occ W/BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 30719
08-14 22:50:45.981  30719-30719/com.guile.occ E/ViewRootImpl﹕ sendUserActionEvent() mView == null
08-14 22:50:45.981  30719-30719/com.guile.occ E/ViewRootImpl﹕ sendUserActionEvent() mView == null
08-14 22:50:46.001  30719-30719/com.guile.occ E/ViewRootImpl﹕ sendUserActionEvent() mView == null
08-14 22:50:46.011  30719-30756/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false
08-14 22:50:46.011  30719-30719/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@38cba1f0 time:88946918
08-14 22:50:52.751  30719-30853/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false

LogCat with Native Facebook App Enabled:

08-14 22:59:45.761  13249-13249/com.guile.occ E/Zygote﹕ MountEmulatedStorage()
08-14 22:59:45.761  13249-13249/com.guile.occ E/Zygote﹕ v2
08-14 22:59:45.761  13249-13249/com.guile.occ I/libpersona﹕ KNOX_SDCARD checking this for 10033
08-14 22:59:45.761  13249-13249/com.guile.occ I/libpersona﹕ KNOX_SDCARD not a persona
08-14 22:59:45.761  13249-13249/com.guile.occ I/SELinux﹕ Function: selinux_compare_spd_ram , priority [2] , priority version is VE=SEPF_SM-G925F_5.1.1_0030
08-14 22:59:45.761  13249-13249/com.guile.occ E/SELinux﹕ [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL
08-14 22:59:45.761  13249-13249/com.guile.occ I/art﹕ Late-enabling -Xcheck:jni
08-14 22:59:45.771  13249-13249/com.guile.occ D/TimaKeyStoreProvider﹕ TimaSignature is unavailable
08-14 22:59:45.781  13249-13249/com.guile.occ D/ActivityThread﹕ Added TimaKeyStore provider
08-14 22:59:45.801  13249-13249/com.guile.occ I/InjectionManager﹕ Inside getClassLibPath + mLibMap{0=, 1=}
08-14 22:59:45.811  13249-13249/com.guile.occ I/InjectionManager﹕ Inside getClassLibPath caller
08-14 22:59:45.871  13249-13285/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false
08-14 22:59:45.871  13249-13285/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isShipBuild true
08-14 22:59:45.871  13249-13285/com.guile.occ I/System.out﹕ (HTTPLog)-Thread-33185-403364762: SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false
08-14 22:59:45.871  13249-13285/com.guile.occ I/System.out﹕ (HTTPLog)-Thread-33185-403364762: SMARTBONDING_FEATURE_ENABLED is true
08-14 22:59:45.871  13249-13285/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false
08-14 22:59:45.881  13249-13285/com.guile.occ I/System.out﹕ KnoxVpnUidStorageknoxVpnSupported API value returned is false
08-14 22:59:45.891  13249-13249/com.guile.occ D/InjectionManager﹕ InjectionManager
08-14 22:59:45.891  13249-13249/com.guile.occ D/InjectionManager﹕ fillFeatureStoreMap com.guile.occ
08-14 22:59:45.901  13249-13249/com.guile.occ I/InjectionManager﹕ Constructor com.guile.occ, Feature store :{}
08-14 22:59:45.901  13249-13249/com.guile.occ I/InjectionManager﹕ featureStore :{}
08-14 22:59:45.911  13249-13249/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:59:45.911  13249-13249/com.guile.occ I/Timeline﹕ Timeline: Activity_launch_request id:com.guile.occ time:89486819
08-14 22:59:45.921  13249-13249/com.guile.occ D/Activity﹕ performCreate Call Injection manager
08-14 22:59:45.921  13249-13249/com.guile.occ I/InjectionManager﹕ dispatchOnViewCreated > Target : com.guile.occ.LoginActivity isFragment :false
08-14 22:59:45.941  13249-13249/com.guile.occ D/Activity﹕ performCreate Call Injection manager
08-14 22:59:45.961  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor mIsFloating : false
08-14 22:59:45.961  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor flags : -2139029248
08-14 22:59:45.991  13249-13249/com.guile.occ I/InjectionManager﹕ dispatchOnViewCreated > Target : com.parse.ui.ParseLoginActivity isFragment :false
08-14 22:59:46.001  13249-13249/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:59:46.001  13249-13319/com.guile.occ D/OpenGLRenderer﹕ Use EGL_SWAP_BEHAVIOR_PRESERVED: true
08-14 22:59:46.011  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:59:46.011  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:59:46.031  13249-13249/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:59:46.061  13249-13319/com.guile.occ D/libEGL﹕ loaded /vendor/lib64/egl/libGLES_mali.so
08-14 22:59:46.071  13249-13319/com.guile.occ I/OpenGLRenderer﹕ Initialized EGL, version 1.4
08-14 22:59:46.081  13249-13319/com.guile.occ I/OpenGLRenderer﹕ HWUI protection enabled for context ,  &this =0x7f7d8d6d60 ,&mEglDisplay = 1 , &mEglConfig = 2107732656
08-14 22:59:46.081  13249-13319/com.guile.occ D/OpenGLRenderer﹕ Get maximum texture size. GL_MAX_TEXTURE_SIZE is 8192
08-14 22:59:46.081  13249-13319/com.guile.occ D/OpenGLRenderer﹕ Enabling debug mode 0
08-14 22:59:46.081  13249-13319/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [1440x2560]-format:1
08-14 22:59:46.191  13249-13249/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@ce0ed1c time:89487096
08-14 22:59:46.191  13249-13249/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@38cba1f0 time:89487096
08-14 22:59:58.291  13249-13249/com.guile.occ D/ViewRootImpl﹕ ViewPostImeInputStage ACTION_DOWN
08-14 22:59:58.401  13249-13249/com.guile.occ I/Timeline﹕ Timeline: Activity_launch_request id:com.guile.occ time:89499300
08-14 22:59:58.461  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor mIsFloating : false
08-14 22:59:58.461  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* installDecor flags : 8454400
08-14 22:59:58.461  13249-13249/com.guile.occ D/Activity﹕ performCreate Call Injection manager
08-14 22:59:58.471  13249-13249/com.guile.occ I/InjectionManager﹕ dispatchOnViewCreated > Target : com.facebook.FacebookActivity isFragment :false
08-14 22:59:58.481  13249-13249/com.guile.occ D/SecWifiDisplayUtil﹕ Metadata value : SecSettings2
08-14 22:59:58.491  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null
08-14 22:59:58.491  13249-13249/com.guile.occ D/PhoneWindow﹕ *FMB* isFloatingMenuEnabled return false
08-14 22:59:58.501  13249-13249/com.guile.occ D/SRIB_DCS﹕ log_dcs ThreadedRenderer::initialize entered!
08-14 22:59:58.501  13249-13319/com.guile.occ D/mali_winsys﹕ new_window_surface returns 0x3000,  [1440x2560]-format:1
08-14 22:59:58.541  13249-13249/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@5562ab1 time:89499446
08-14 22:59:58.541  13249-13249/com.guile.occ V/ActivityThread﹕ updateVisibility : ActivityRecord{2d7dbc2b token=android.os.BinderProxy@ce0ed1c {com.guile.occ/com.parse.ui.ParseLoginActivity}} show : true
08-14 22:59:58.691  13249-13457/com.guile.occ I/System.out﹕ (HTTPLog)-Static: isSBSettingEnabled false
08-14 22:59:58.911  13249-13249/com.guile.occ I/Timeline﹕ Timeline: Activity_idle id: android.os.BinderProxy@ce0ed1c time:89499810

Answer 1

Each Android iteration comes with its own WebView implementation, for better or worse. 5.0+ Androids use the app-based implementation, which gets regular updates and so on, but also is different than the previous implementations.

Long story short, I believe this my be the problem. The WebView could be maintaining the session for your login or keeping the credentials in cookie storage for repeated use/confirmation. I can not offer a direct solution here as I am not that familiar with the new WebView's insides, but try force clearing the session and/or the cookie storage before each new login and see what happens.

Answer 2

I can see this in your logcat

08-12 19:48:53.371  32227-32227/com.guile.occ E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.PlatformProvider
08-12 19:48:53.371  32227-32227/com.guile.occ E/ActivityThread﹕ Failed to find provider info for com.facebook.wakizashi.provider.

Which means its unable to conenct internet check this Android : Failed to find provider info for com.facebook.wakizashi.provider.PlatformProvider

And try adding this in manifest

<uses-permission android:name="android.permission.SET_DEBUG_APP"/>