android - Auth0 with Xamarin PCL Dependency Service NullReferenceException -


i'm trying use dependencyservice auth0 component , stuck system.nullreferenceexception: object reference not set instance of object error.

following code in android project :

namespace loginpattern.android {  [assembly: xamarin.forms.dependency (typeof(loginpattern.android.auth0widgetlogin))] public class auth0widgetlogin : formsapplicationactivity, loginpattern.iauth0widgetlogin {      private auth0client auth0 = new auth0client (                                     "xxx.auth0.com",                                     "xxxxxxxxxxxxxx");      public auth0widgetlogin ()     {     }      public async task<loginpattern.user> loginuseauth0embeddedwidget()     {         auth0user usr = null;           try {             usr = await this.auth0.loginasync(forms.context);         } catch (exception ex) {             throw ex;         }          loginpattern.user userobj = new user(usr.auth0accesstoken);          return userobj;      } } }

this in shared library :

namespace loginpattern {     public interface iauth0widgetlogin     {         task<user> loginuseauth0embeddedwidget();     }      public class user     {         public user(             string accesstoken)         {             accesstoken = accesstoken;         }          public string accesstoken {get; private set;}         public string scope {get; private set;}     } }

am getting error here when calling dependency service:

public async void login ()     {         loginpattern.user usr = null;         usr = await dependencyservice.get<iauth0widgetlogin>().loginuseauth0embeddedwidget();         app.current.properties["isloggedin"] = true;     }

place attribute above namespace declaration:

    [assembly: xamarin.forms.dependency (typeof(loginpattern.android.auth0widgetlogin))]     namespace loginpattern.android     {           public class auth0widgetlogin : formsapplicationactivity, loginpattern.iauth0widgetlogin           ...     {

Comments

Post a Comment

Popular posts from this blog

javascript - Using jquery append to add option values into a select element not working -

i'm looking dynamically populate select element names of items stored array. for reason it's not working , i'm not sure why. html: <div class="col-md-4 col-md-offset-4"> <select class="select1"> </select> , <select class="select2"> </select> </div> note i'm using bootstrap layout. here's jquery i'm using try , populate ".select1" jquery: select: function() { $.each(state.greens, function(index, value) { $(".select1").append("<option value =' " + index + " '>" + state.greens[index].name + "</option>"); }); } note function 'select' stored within object called 'display'. state.greens name of array i'm trying access. so @ end of html page call display.select(); call function. no error messages showing in console. also, saw question: appending
Read more

Android soft keyboard reverts to default keyboard on orientation change -

i'm building android soft keyboard , can't seem fix bug - have arabic , qwerty keyboard , when rotate device on qwerty keyboard (or arabic shift), it's if program has "restarted" , becomes arabic keyboard without shift. the onsaveinstancestate(bundle savedinstancestate) not work because application not extend activity inputmethodservice . i put following in android manifest android:configchanges="keyboard|keyboardhidden|orientation" android:windowsoftinputmode="stateunchanged|adjustresize"> i tried using @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); log.i(mydebug, "config changed " + currentkeyboard.equals(qwerty)); } however, currentkeyboard.equals(qwerty)) results false , made sure true before orientation change. any appreciated. i think applications fault. if application restarting on orientation change
Read more

Rendering JButton to get the JCheckBox behavior in a JTable by using images does not update my table -

i rendering jbutton image on simulate jcheckbox behavior. why don't let jtable render jcheckbox? because need bigger checkboxes , there's no way can resize them (as far know). so, have own table cell renderer , editor. both renders jbutton , checkbox images on them. trying change image checked image unchecked image (or vice versa) , update cell value (boolean true or false). however, reason, getcelleditorvalue() not update table. so, release mouse, value goes original one. any appreciated! lot! public class tableexample extends jframe { jscrollpane pane; jpanel panel; jtable table; object[][] data; mytablemodel tm; renderer buttoncolumn; public tableexample(object[][] data) throws ioexception { string[] columns = {"column#1", "column#2", "column#3", "column#4", "column#5", "column#6"}; this.data = data; this.setpreferredsize(new dimension(700, 500));
Read more