public GraphService(Activity activity)
{
AuthClientApp = PublicClientApplicationBuilder.Create(clientID)
.WithRedirectUri($"msal{clientID}://auth")
.Build();
var authProvider = new DelegateAuthenticationProvider(async(request) =>
{
IEnumerable <IAccount> accounts = await AuthClientApp.GetAccountsAsync();
AuthenticationResult authResult;
try
{
authResult = await AuthClientApp.AcquireTokenSilent(scopes, accounts.FirstOrDefault())
.ExecuteAsync();
}
catch (MsalUiRequiredException)
{
authResult = await AuthClientApp.AcquireTokenInteractive(scopes)
.WithParentActivityOrWindow(activity)
.ExecuteAsync();
}
request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", authResult.AccessToken);
});
// Use AndroidClientHandler as opposed to HttpClientHandler.
var innerHandler = new AndroidClientHandler {
AllowAutoRedirect = false
};
var pipeline = GraphClientFactory.CreatePipeline(GraphClientFactory.CreateDefaultHandlers(authProvider), innerHandler);
GraphClient = new GraphServiceClient(authProvider, new HttpProvider(pipeline, true, new Serializer()));
}
private IAuthenticationProvider GetAuthProvider()
{
AuthClientApp = PublicClientApplicationBuilder.Create(clientID)
.WithRedirectUri($"msal{clientID}://auth")
.Build();
return(new DelegateAuthenticationProvider(async(request) =>
{
IEnumerable <IAccount> accounts = await AuthClientApp.GetAccountsAsync();
AuthenticationResult authResult;
try
{
authResult = await AuthClientApp.AcquireTokenSilent(scopes, accounts.FirstOrDefault())
.ExecuteAsync();
}
catch (MsalUiRequiredException)
{
authResult = await AuthClientApp.AcquireTokenInteractive(scopes)
.ExecuteAsync();
}
request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", authResult.AccessToken);
}));
}