Microsoft official UWP vpn sample: UwpVpnPluginSample, in CreateAppProfile() part function as bellow.
// Hard coding parameters for the profile
VpnPlugInProfile profile = new VpnPlugInProfile();
...
**profile.ServerUris.Add(new Uri("http://10.137.192.135"));**
var returnedStatus = await agent.AddProfileFromObjectAsync(profile);
...
I don't kown what url to fill into "ServerUris" property, and what content should be provide in that url.
And :
var connectStatus = await agent.ConnectProfileAsync(pluginProfile);
the connectStatus always return Other or CannotFindProfile.
Related
I have connected my Visual studio to Azure Active Directory by setting and manually entering pass/email.
This credential shows when I go to Azure Serice Authenticator in Visual Studio under tools.
I want to access the ID associated.
I came across this doc , and I want the AZURE_USERNAME , which must be associated with the id logged in.
I am unable to get a way by which I can access this value.
Does it mean that I can only access it if I explicitly set such value ?
--
Alternatively , is there any way by which I can access the Email ID of user signed in to Visual studio / or signed into Windows and not just User name
Yes of course we should preset environment variables.
Then we can use them for EnvironmentCredential authentication. The reverse will not work.
You can call Microsoft Graph API to get the user information.
Sample reference here.
You can implement the graphServiceClient like this:
var credential = new DefaultAzureCredential();
var token = credential.GetToken(
new Azure.Core.TokenRequestContext(
new[] { "https://graph.microsoft.com/.default" }));
var accessToken = token.Token;
var graphServiceClient = new GraphServiceClient(
new DelegateAuthenticationProvider((requestMessage) =>
{
requestMessage
.Headers
.Authorization = new AuthenticationHeaderValue("bearer", accessToken);
return Task.CompletedTask;
}));
A blog for your reference.
I am making an app in xamarin forms of which I will have a login similar to that of whatapp web, an on-screen qr that will be scanned by the phone, in the emulator with visual studio 2017 I have no problems, but when I export the app to an apk and the I install on a mobile device, the app reads the qr and returns to the previous login screen, not showing any reaction, which should be to go to the next screen where I have a dashboard.
What can be? I enclose my code used.
btnScanQRCode.IsEnabled = false;
var scan = new ZXingScannerPage();
scan.OnScanResult += (result) =>
{
scan.IsScanning = false;
Device.BeginInvokeOnMainThread(async () =>
{
await Application.Current.MainPage.Navigation.PopAsync();
var resultado = JsonConvert.DeserializeObject<QrCode>(result.Text);
JObject qrObject = JObject.Parse(JsonConvert.SerializeObject(resultado));
JsonSchema schema = JsonSchema.Parse(SettingHelper.SchemaJson);
bool valid = qrObject.IsValid(schema);
if (valid == true)
{
App.Database.InsertQrCode(resultado);
QrCode qr = App.Database.GetQrCode();
await _viewModel.Login();
await Navigation.PushAsync(new Organization());
}
else
{
await DisplayAlert("False", JsonConvert.SerializeObject(resultado), "ok");
}
});
};
await Application.Current.MainPage.Navigation.PushAsync(scan);
btnScanQRCode.IsEnabled = true;
This was originally a comment, but through the writing i realized this is the answer.
You need to debug your code. Attach a device and deploy the app in Debug config. Step through your code and see where it fails.
It sounds like it's crashing silently and probably on the line where you Deserialize result.Text in a QrCode. result.Text is just a string and will never deserialize into an object. You probably need a constructor that takes a string like QrCode(result.Text).
First scan then use the result to do other things in your app.
var scanner = new ZXing.Mobile.MobileBarcodeScanner();
var result = await scanner.Scan();
Check for proper camera permissions. I bet your problem is there.
I have Xamarin Forms project where I'm trying to POST and GET data to/from a Web API but when I'm making an async/await call, it works on the emulator (not without its original problems!) but when I try it on my actual phone mobile (Samsung S8+), it just hangs indefinitely.
Note that I'm only concentrating on the Android part right now, not iOS, not that the problem should make any difference in either.
This is the code I'm using:
IDataService.cs
Task<TResponse> PostDataAsync<TRequest, TResponse>(string uri, TRequest data)
where TRequest : class
where TResponse : class;
DataService.cs:
public async Task<TResponse> PostDataAsync<TRequest, TResponse>(string
additionalUri, TRequest data)
where TRequest : class
where TResponse : class
{
return await WebClient
.PostData<TRequest, TResponse>
(string.Concat(this.Uri, additionalUri), data);
}
WebClient.cs
using (var client = new HttpClient())
{
var jsonData = JsonConvert.SerializeObject(data);
using (var response = await client.PostAsync(
uri,
new StringContent(jsonData,
Encoding.UTF8,
"application/json" )))
{
if (response.IsSuccessStatusCode)
{
var content = await response.Content.ReadAsStringAsync();
return JsonConvert.DeserializeObject<TResponse>(content);
}
}
}
Method 1:
LoginPageViewModel.cs
public DelegateCommand SignInCommand => _signInCommand ??
(this._signInCommand = new DelegateCommand(SignInCommandAction));
private async void SignInCommandAction()
{
try
{
....
var user = await this._dataService
.PostDataAsync<LoginRequestDto,
LoginResponseDto>(#"Accounts/Login", loginRequestDto);
....
}
...
}
Method2:
LoginPageViewModel.cs
public DelegateCommand SignInCommand => _signInCommand ??
(this._signInCommand =
new DelegateCommand(async () => await SignInCommandAction()));
private async Task SignInCommandAction()
{
try
{
....
var user = await this._dataService
.PostDataAsync<LoginRequestDto,
LoginResponseDto>(#"Accounts/Login", loginRequestDto);
....
}
...
}
The PostDataAsync works with both methods when I call my local web API i.e. http://10.0.2.2/MyApp/api/ but both methods still hangs when calling external my web service from web provider i.e. http://myapp-123-site.atempurl.com/api/ which is a temp url for testing purpose.
The same apply to my GetDataAsync which is not demonstrated in question but I just thought I'd mention it.
Based on the above, you would think that my async/await code is correct since it works when calling the local web api but then what's causing it to hang when calling the remote web api.
As mentioned, I did enable my INTERNET permission in the manifest.
Any suggestions welcomed?
Thanks.
UPDATE-1:
Note that I've just tried to call a GET opertation within the same function and this is working in the emulator but hanging with the actual mobile.
using (var client = new HttpClient())
{
using (var response = await client.GetAsync(uri))
{
if (response.IsSuccessStatusCode)
{
var content = await response.Content.ReadAsStringAsync();
return Newtonsoft.Json.JsonConvert
.DeserializeObject<TResponse>(content);
}
}
}
UPDATE-2:
This is somehow working and I have no idea why! The only thing that comes to mind is that I upgraded my libraries. This included PRISM which may have been at the source of the problem but I have no idea.
Sorry I can't provide more details. I could role back my code and try to see if it's hanging again but I just don't have the time to go and experiment some more considering the amount of time I've already spent on this. Sorry.
The requested url is an IP or a domain name.
If it is ip, only the IP of the public network can be accessed by devices on multiple network segments.
If it is a domain name, it needs to support the domain name resolution service.
If you do not have these environments for a while, you need the IP of the device and the IP of the server on the same network segment.
The PostDataAsync works with both methods when I call my local web API i.e. http://10.0.2.2/MyApp/api/ but both methods still hangs when calling external my web service from web provider i.e. http://myapp-123-site.atempurl.com/api/ which is a temp url for testing purpose.
From this phenomenon , the reason should be the temp url. From this domain name (myapp-123-site.atempurl.com) can not find the right local IP (10.0.2.2).And when you test in local network , I guess this will work.However the network of actual mobile can be not the same with local network , such as using 3G/4G network , then this will not working.
I am using VS 2017 to create a cross platform (UWP, Android, iOS) Xamarin app. I am trying to show all images from a folder on device as thumbnails (similar to gallery app, sample screenshot attached).
I have looked into WrapLayout sample code provided on Xamarin website (Link), but it's loading all images from internet using JSON
protected override async void OnAppearing()
{
base.OnAppearing();
var images = await GetImageListAsync();
foreach (var photo in images.Photos)
{
var image = new Image
{
Source = ImageSource.FromUri(new Uri(photo + string.Format("?width={0}&height={0}&mode=max", Device.OnPlatform(240, 240, 120))))
};
wrapLayout.Children.Add(image);
}
}
async Task<ImageList> GetImageListAsync()
{
var requestUri = "https://docs.xamarin.com/demo/stock.json";
using (var client = new HttpClient())
{
var result = await client.GetStringAsync(requestUri);
return JsonConvert.DeserializeObject<ImageList>(result);
}
}
I have also looked into Xamarin Media Plugin (Link), but it shows only one image at a time. Sample code -
await CrossMedia.Current.Initialize();
var file = await CrossMedia.Current.PickPhotoAsync();
if (file == null)
return;
MainImage.Source = ImageSource.FromStream(() =>
{
var stream = file.GetStream();
file.Dispose();
return stream;
});
But I am unable to find a way to implement these two (or any other methods) in such a way that I can create my own gallery section in my app.
You need to create an Activity in your specific platform. This activity will be launched as an intent throught your PCL project using, for instance, Dependency Services.
In this custom Activity you should have a GridView which fills its source from the current directory if the file fits your restrictions, such a specific extension, size, etc.
Finally, to get the selected image you just send the image path or whatever you need to the PCL project with DependencyService.
I am creating a Cortana skill on the Cortana canvas, I have a button.
I wanted to know if it possible to have an 'imback' type of button to open a webpage.
Ye, for example
var message = context.MakeMessage() as IMessageActivity;
message.ChannelData = JObject.FromObject(new
{
action = new { type = "LaunchUri", uri = "skype:echo123?call" }
});
await context.PostAsync(message);
this code will start a call with echo123 user on skype
Reference: https://learn.microsoft.com/en-us/cortana/tutorials/bot-skills/bot-entity-channel-data
You can supply an openUrl to a card action, or even use ChannelData to send a LaunchUri command, deep linking to an application. (I haven't tried this, but I assume 'http://websitename.com' will launch in the Cortana host platform's default browser.)
activity.ChannelData = new {
action = new { type = "LaunchUri", uri = "http://websitename.com"}
};