DavX5: support login flow

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

src/main/java/com/owncloud/android/authentication/AuthenticatorActivity.java

@@ -189,7 +189,7 @@ public class AuthenticatorActivity extends AccountAuthenticatorActivity
     private static final String KEY_USERNAME = "USERNAME";
     private static final String KEY_PASSWORD = "PASSWORD";
     private static final String KEY_ASYNC_TASK_IN_PROGRESS = "AUTH_IN_PROGRESS";
-    private static final String WEB_LOGIN = "/index.php/login/flow";
+    public static final String WEB_LOGIN = "/index.php/login/flow";
     public static final String PROTOCOL_SUFFIX = "://";
     public static final String LOGIN_URL_DATA_KEY_VALUE_SEPARATOR = ":";
     public static final String HTTPS_PROTOCOL = "https://";

src/main/java/com/owncloud/android/ui/activity/SettingsActivity.java

@@ -62,6 +62,7 @@ import com.nextcloud.client.preferences.AppPreferencesImpl;
 import com.owncloud.android.BuildConfig;
 import com.owncloud.android.MainApp;
 import com.owncloud.android.R;
+import com.owncloud.android.authentication.AuthenticatorActivity;
 import com.owncloud.android.authentication.PassCodeManager;
 import com.owncloud.android.datamodel.ArbitraryDataProvider;
 import com.owncloud.android.datamodel.ExternalLinksProvider;
@@ -114,6 +115,7 @@ public class SettingsActivity extends PreferenceActivity
     private static final int ACTION_CONFIRM_PASSCODE = 6;
     private static final int ACTION_CONFIRM_DEVICE_CREDENTIALS = 7;
     private static final int ACTION_REQUEST_CODE_DAVDROID_SETUP = 10;
+    private static final int TRUE_VALUE = 1;
 
     private static final String DAV_PATH = "/remote.php/dav";
 
@@ -750,6 +752,11 @@ public class SettingsActivity extends PreferenceActivity
                 davDroidLoginIntent.putExtra("url", serverBaseUri.toString() + DAV_PATH);
             }
             davDroidLoginIntent.putExtra("username", UserAccountManager.getUsername(account));
+
+            davDroidLoginIntent.putExtra("loginFlow", TRUE_VALUE);
+            davDroidLoginIntent.setData(Uri.parse(serverBaseUri.toString() + AuthenticatorActivity.WEB_LOGIN));
+            davDroidLoginIntent.putExtra("davPath", DAV_PATH);
+
             startActivityForResult(davDroidLoginIntent, ACTION_REQUEST_CODE_DAVDROID_SETUP);
         } else {
             // DAVdroid not installed