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aimore / BaseCommand.cs
Created May 13, 2020
Test base command class
View BaseCommand.cs
using System;
using System.Windows.Input;
using static System.Math;
namespace Test.ViewModels
public class BaseCommand : ICommand
public event EventHandler CanExecuteChanged;
aimore / exception.txt
Last active Sep 24, 2019
Exception Android binding
View exception.txt
Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object
at Xamarin.Android.Tools.ApiXmlAdjuster.JavaApiXmlGeneratorExtensions.Save (Xamarin.Android.Tools.ApiXmlAdjuster.JavaTypeParameters typeParameters, System.Xml.XmlWriter writer, System.String indent) [0x000f0] in <bc1fe201558a400c810274a0a29f9006>:0
at Xamarin.Android.Tools.ApiXmlAdjuster.JavaApiXmlGeneratorExtensions.SaveCommon (Xamarin.Android.Tools.ApiXmlAdjuster.JavaMember m, System.Xml.XmlWriter writer, System.String elementName, System.String abs, System.String native, System.String ret, System.String sync, System.String transient, System.String type, System.String typeGeneric, System.String value, System.String volat, Xamarin.Android.Tools.ApiXmlAdjuster.JavaTypeParameters typeParameters, System.Collections.Generic.IEnumerable`1[T] parameters, System.Collections.Generic.IEnumerable`1[T] exceptions, System.Nullable`1[T] extBridge, System.String jniReturn, System.Nullable`1[T]
View HomeContent.json
"home": {
"promoCards": [
"title": "Lecker Burger",
"address": "Cheesy pizza 30% off and you get a second free",
"image": "",
"rigthWidget": "OPEN",
"leftWidget": "4.5"
aimore / strings.json
Last active Jun 30, 2019
XamFood Strings Json
View strings.json
"appName": "Joe's",
"isPremium": false,
"styles": {
"backgroundColor": "#fefcfa",
"promoTitleColor": "#1b1b1b",
"tabBarColor": "#fefcfa",
"categoryTitleColor": "#fefcfa",
"descriptionColor": "",
"rightWidgetColor": "",
aimore / IdentityServerHelper.swift
Last active May 24, 2020
IdentityServer4 helper for swift 4
View IdentityServerHelper.swift
// IdentityServerHelper.swift
// Example
// Aimore Sa on 5/6/19.
import Foundation
import AppAuth
aimore / extension.cs
Created May 30, 2019
Image source extension xamarin
View extension.cs
public class ImageResourceExtension : IMarkupExtension
public string Source { get; set; }
public object ProvideValue(IServiceProvider serviceProvider)
if (Source == null)
return null;
View PdfConverteriOS.cs
using System;
using System.Drawing;
using System.IO;
using CatCatalog.iOS.Services;
using CatCatalog.Services;
using CoreGraphics;
using Foundation;
using UIKit;
using Xamarin.Forms;
aimore / OAuth2AuthenticatorEx.cs
Created Feb 4, 2019
Xamarin.Auth "Authentication Error: Invalid state from server. Possible forgery!" workaround
View OAuth2AuthenticatorEx.cs
public class OAuth2AuthenticatorEx : OAuth2Authenticator
protected override void OnPageEncountered(Uri url, IDictionary<string, string> query, IDictionary<string, string> fragment)
// Remove state from dictionaries.
// We are ignoring request state forgery status
// as we're hitting an ASP.NET service which forwards
// to a third-party OAuth service itself
if (query.ContainsKey("state"))
aimore / SignatureCheck.cs
Last active Sep 28, 2018
Android signature security validation for Xamarin.Android
View SignatureCheck.cs
public bool ValidateAppSignature(Android.Content.Context context)
PackageInfo packageInfo = context.PackageManager.GetPackageInfo(context.PackageName, PackageInfoFlags.Signatures);
//note sample just checks the first signature
foreach (Signature signature in packageInfo.Signatures) {
// SHA1 the signature
String sha1 = GetSHA1(signature.ToByteArray());
// check is matches hardcoded value
return APP_SIGNATURE.Equals(sha1);
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