I have a simple code that make authentication in Platform-specific code:
[assembly: ExportRenderer(typeof(FacebookLoginPage), typeof(FacebookLoginRenderer))]
namespace VejoSeriesMobile.Droid.Renderers
{
public class FacebookLoginRenderer : PageRenderer
{
public static string ClientId = "";
public static string ClientSecret = "";
public static string Scope = "email, public_profile";
public static string AuthorizeUrl = "https://m.facebook.com/dialog/oauth";
public static string RedirectUrl = "https://www.facebook.com/connect/login_success.html";
public static string AccessTokenUrl = "https://m.facebook.com/dialog/oauth/token";
protected override void OnElementChanged(ElementChangedEventArgs<Page> e)
{
base.OnElementChanged(e);
var activity = this.Context as Activity;
var auth = new OAuth2Authenticator(
clientId: "717427648360004",
scope: Scope,
authorizeUrl: new Uri("https://m.facebook.com/dialog/oauth/"),
redirectUrl: new Uri("http://www.facebook.com/connect/login_success.html"));
auth.Completed += OnAuthenticationCompleted;
activity.StartActivity(auth.GetUI(activity));
}
async void OnAuthenticationCompleted(object sender, AuthenticatorCompletedEventArgs e)
{
if (e.IsAuthenticated)
{
var request = new OAuth2Request("GET", new Uri("https://graph.facebook.com/me?fields=id,name,picture,email"), null, e.Account);
await request.GetResponseAsync().ContinueWith(t =>
{
var fbUser = JObject.Parse(t.Result.GetResponseText());
var id = fbUser["id"].ToString().Replace("\"", "");
var name = fbUser["name"].ToString().Replace("\"", "");
var email = fbUser["email"].ToString().Replace("\"", "");
var conta = new Account { Username = name };
conta.Properties.Add("email", email);
AccountStore.Create(Context).Save(conta, "VejoSeries");
App.SuccessfulLoginAction.Invoke();
});
}
}
}
}
in my App portable class I have a static method that is calling after login complete:
But in this scope I only can use Static method, I wish to call a non static method for re rendering the entire Page (with menus, etc..) after login. How can I do this?
Above my successLoginAction:
public static Action SuccessfulLoginAction
{
get
{
return new Action(() =>
{
//var masterDetailPage = Application.Current.MainPage as MasterDetailPage;
//masterDetailPage.Detail = new NavigationPage((Page)Activator.CreateInstance(typeof(Painel)));
//masterDetailPage.IsPresented = false;
_NavPage.Navigation.PopAsync();
_NavPage.Navigation.PushAsync(new MainPage());
});
}
}
The short answer is don't make it static.
If you change it to just a public property, you can access it through App.Current.
To be more specific:
public Action SuccessfulLoginAction
{
get
{
return new Action(() =>
{
//var masterDetailPage = Application.Current.MainPage as MasterDetailPage;
//masterDetailPage.Detail = new NavigationPage((Page)Activator.CreateInstance(typeof(Painel)));
//masterDetailPage.IsPresented = false;
_NavPage.Navigation.PopAsync();
_NavPage.Navigation.PushAsync(new MainPage());
});
}
}
Then call it from anywhere like this:
((App)Application.Current).SuccessfulLoginAction.Invoke();
That way you can access your _NavPage as the whole thing is bound to the instance of App.
Related
I have my main method static async Task Main(string[] args) and another async method public static async Task c8y_pushEvent(string Event_MSG) inside my class Program. I'm trying to call the public static async Task c8y_pushEvent(string Event_MSG) from inside static async Task Main(string[] args).
class Program
{
int int_lastPushedId = 235;
int get_maxID_old = 250;
string c8y_Event_MSG = String.Empty;
static async Task Main(string[] args)
{
//Here's where I am getting the problem.
for(int event_dbID_lp = int_lastPushedId + 1 ; event_dbID_lp <= get_maxID_old ; event_dbID_lp++)
{
SqlCommand command4 = new SqlCommand(queryString4, connection);
command4.Parameters.Add("#ID", (int)event_dbID_lp);
SqlDataReader reader4 = command4.ExecuteReader();
while (reader4.Read())
{
c8y_Event_MSG = Convert.ToString(reader4[0]);
await c8y_pushEvent(c8y_Event_MSG);
}
reader4.Close();
}
}
public static async Task c8y_pushEvent(string Event_MSG)
{
var serviceCollection = new ServiceCollection();
ConfigureServices(serviceCollection);
var services = serviceCollection.BuildServiceProvider();
var httpClientFactory = services.GetRequiredService<IHttpClientFactory>();
List<KeyValue> keyvalue = JsonConvert.DeserializeObject<List<KeyValue>>(Event_MSG);
string controllerName = keyvalue[0].ToString();
JArray EventMSG = JArray.Parse(Event_MSG);
var item = EventMSG[0];
var httpClientgetControllerId = httpClientFactory.CreateClient("getControllerId");
var httpClientcreateGolfControllerEvent = httpClientFactory.CreateClient("createGolfControllerEvent");
var request1 = await httpClientgetControllerId.GetAsync($"abc/xyz/{controllerName}");
if (request1.IsSuccessStatusCode)
{
HttpResponseMessage request2 = await httpClientcreateGolfControllerEvent.PostAsync("event/events", stringContent);
//stringContent is fetched from some other lines which I've not
//included here
}
}
private static void ConfigureServices(ServiceCollection services)
{
services.AddHttpClient("getControllerId", options =>
{
options.BaseAddress = new Uri("https://myurl.com/");
options.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic","auth_value");
});
services.AddHttpClient("createGolfControllerEvent", options =>
{
options.BaseAddress = new Uri("https://myurl.com/");
options.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic","auth_value");
options.DefaultRequestHeaders.Add("Accept", "application/vnd.com.nsn.xyz.event+json");
});
}
public class KeyValue
{
[JsonProperty("ControllerName")]
public string ControllerName { get; set; }
public override string ToString()
{
return String.Format(ControllerName.ToString());
}
}
}
I'm getting the error
An object reference is required for the non-static field, method, or property 'Program.c8y_Event_MSG' [deserializeJSON]
on line
await c8y_pushEvent(c8y_Event_MSG);
How can I fix this issue?
Additional question:
The difference between int_lastPushedId and get_maxID_old can be as big as 1000+
hence there can be 1000+ iterations.
Is my implementation of IHttpClientFactory suitable for this, making sure there's no exhaustion of socket/ports?
Main error
It looks like c8y_Event_MSG should be local:
while (reader4.Read())
{
var c8y_Event_MSG = Convert.ToString(reader4[0]);
await c8y_pushEvent(c8y_Event_MSG);
}
HttpClient qestion
All of the Dependency Injection code seem unnecessary. I cannot think of a situation where var serviceCollection = new ServiceCollection(); in a for loop
would be a good idea.
Here's a simpler version that should do the job:
class Program
{
static HttpClient httpClient;
static async Task Main(string[] args)
{
httpClient = new HttpClient();
//Setup auth and base address
for(...)
{
...
c8y_pushEvent(...)
}
}
public static async Task c8y_pushEvent(string Event_MSG, HttpClient)
{
List<KeyValue> keyvalue = JsonConvert.DeserializeObject<List<KeyValue>>(Event_MSG);
string controllerName = keyvalue[0].ToString();
JArray EventMSG = JArray.Parse(Event_MSG);
var item = EventMSG[0];
var request1 = await httpClient.GetAsync($"abc/xyz/{controllerName}");
}
Im using selenium chrome driver combined with cefsharp, the page im working on sends some kind of ping request(fetch/xhr) everytime an element is clicked the problem is that those request aren't initiated by selenium chrome driver so there is no wayy for me to track them and wait for the finish. Is there any way for selenium or js to track those requests?
With Selenium 4 you actually can intercept requests
Call Enable to start requests tracking
Call WaitForRequestResponse to wait for the specific request
If you can same requests you can clean already catch requests with Clear
public class WebDriverNetworkController
{
private const string RequestWillBeSent = "requestWillBeSent";
private const string ResponseReceived = "responseReceived";
private readonly IDriverProvider _driverProvider;
private readonly ILogger _log;
private readonly ConcurrentDictionary<DevToolsSession, List<HttpRequestModel>> _sentRequests = new();
public WebDriverNetworkController(IDriverProvider driverProvider, ILogger log)
{
_driverProvider = driverProvider;
_log = log;
}
private void HandleDevToolsEvent(object sender, DevToolsEventReceivedEventArgs e)
{
var session = sender as DevToolsSession;
switch (e.EventName)
{
case RequestWillBeSent:
{
OnRequestWillBeSent(session, e.EventData);
break;
}
case ResponseReceived:
{
OnResponseReceived(session, e.EventData);
break;
}
}
}
public void Enable()
{
_log.Information("Enabling network tracing");
var session = GetDevToolsSession();
session.DevToolsEventReceived += HandleDevToolsEvent;
var enableTask = session.Domains.Network.EnableNetwork();
enableTask.Wait();
}
public void Disable()
{
_log.Information("Disabling network tracing");
var session = GetDevToolsSession();
session.DevToolsEventReceived -= HandleDevToolsEvent;
var disableTask = session.Domains.Network.DisableNetwork();
disableTask.Wait();
}
public void Clear()
{
_log.Information("Clearing captured network tracing requests");
var sentRequests = GetRequests();
sentRequests.Clear();
}
public HttpRequestModel[] GetAllRequests() => GetRequests().ToArray();
public HttpRequestModel WaitForRequestResponse(HttpMethod method, string uri)
{
_log.Debug($"Waiting for {method.Method} request to {uri}");
var session = GetDevToolsSession();
HttpRequestModel request = null;
var waiter = new ConditionWaiter
{
Message = $"{method.Method} request to {uri}"
};
waiter.Until(() =>
{
request = GetLastSentRequest(method, uri, session);
return request?.Response != null;
});
return request;
}
private HttpRequestModel GetLastSentRequest(HttpMethod method, string uri, DevToolsSession session) =>
GetRequests(session).LastOrDefault(request => request.Method == method && request.Uri.EndsWith(uri));
private DevToolsSession GetDevToolsSession()
{
var driver = _driverProvider.GetDriver();
if (driver is IDevTools devTools)
{
return devTools.GetDevToolsSession();
}
throw new WebDriverException($"Could not cast {driver.GetType().Name} to {nameof(IDevTools)}");
}
private List<HttpRequestModel> GetRequests(DevToolsSession session = null) =>
_sentRequests.GetOrAdd(session ?? GetDevToolsSession(), _ => new());
private void OnRequestWillBeSent(DevToolsSession session, JToken eventData)
{
var requestModel = new HttpRequestModel
{
Id = eventData.SelectToken("requestId", true)!.Value<string>(),
Method = new(eventData.SelectToken("request.method", true)!.Value<string>()!),
Uri = eventData.SelectToken("request.url", true)!.Value<string>(),
Body = eventData.SelectToken("request")!.Value<string>("postData")
};
var sentRequests = _sentRequests.GetOrAdd(session, _ => new());
sentRequests.Add(requestModel);
}
private void OnResponseReceived(DevToolsSession session, JToken eventData)
{
var requestId = eventData.SelectToken("requestId", true)!.Value<string>();
var responseModel = new HttpResponseModel
{
Uri = eventData.SelectToken("response.url", true)!.Value<string>(),
StatusCode = (HttpStatusCode)eventData.SelectToken("response.status", true)!.Value<long>()
};
var sentRequests = _sentRequests[session];
var request = sentRequests.Last(request => request.Id == requestId);
request.Response = responseModel;
}
}
The code above is not ready to be used right away but should give a general understanding of the approach.
I'm new at working on the abp.io framework, precisely Angular + Entity Framework Core.
I want to be able to create or display an objects list of a class that I've created.
For example, I've made a class called Address on the Domain layer.
Here is its AppService on the Application layer:
namespace ASKOM.RefPlusStudio.core.Services
{
[Authorize(corePermissions.Addresses.Default)]
public class AddressAppService : coreAppService, IAddressAppService
{
private readonly IAddressRepository _addressRepository;
private readonly AddressManager _addressManager;
public AddressAppService(IAddressRepository addressRepository, AddressManager addressManager)
{
_addressRepository = addressRepository;
_addressManager = addressManager;
}
[Authorize(corePermissions.Addresses.Create)]
public async Task<AddressDto> CreateAsync(CreateUpdateAddressDto input)
{
var address = await _addressManager.CreateAsync(
input.StreetNumber,
input.StreetName,
input.PostalCode,
input.City,
input.Country
);
await _addressRepository.InsertAsync(address);
return ObjectMapper.Map<Address, AddressDto>(address);
}
[Authorize(corePermissions.Addresses.Delete)]
public async Task DeleteAsync(Guid id)
{
await _addressRepository.DeleteAsync(id);
}
public async Task<AddressDto> GetAsync(Guid id)
{
var address = await _addressRepository.GetAsync(id);
return ObjectMapper.Map<Address, AddressDto>(address);
}
public async Task<PagedResultDto<AddressDto>> GetListAsync(GetAddressListDto input)
{
if (input.Sorting.IsNullOrWhiteSpace())
{
input.Sorting = nameof(Address.Country);
}
var addresses = await _addressRepository.GetListAsync(
input.SkipCount,
input.MaxResultCount,
input.Sorting,
input.Filter
);
var totalCount = await AsyncExecuter.CountAsync(
_addressRepository.WhereIf(
!input.Filter.IsNullOrWhiteSpace(),
address => address.Country.Contains(input.Filter)
)
);
return new PagedResultDto<AddressDto>(
totalCount,
ObjectMapper.Map<List<Address>, List<AddressDto>>(addresses)
);
}
[Authorize(corePermissions.Addresses.Edit)]
public async Task UpdateAsync(Guid id, CreateUpdateAddressDto input)
{
var address = await _addressRepository.GetAsync(id);
address.StreetNumber = input.StreetNumber;
address.StreetName = input.StreetName;
address.PostalCode = input.PostalCode;
address.City = input.City;
address.Country = input.Country;
await _addressRepository.UpdateAsync(address);
}
}
}
I gave them all the permissions needed.
Here is corePermissions.cs :
namespace ASKOM.RefPlusStudio.core.Permissions
{
public static class corePermissions
{
public const string GroupName = "core";
//Add your own permission names. Example:
//public const string MyPermission1 = GroupName + ".MyPermission1";
public static class Addresses
{
public const string Default = GroupName + ".Addresses";
public const string Create = Default + ".Create";
public const string Edit = Default + ".Edit";
public const string Delete = Default + ".Delete";
}
}
}
I wanted to see if it can display an Addresses list so I've made a static one on DataSeeder:
namespace ASKOM.RefPlusStudio.core
{
public class coreDataSeederContributor : IDataSeedContributor, ITransientDependency
{
private readonly IRepository<Address, Guid> _addressRepository;
private readonly IGuidGenerator _guidGenerator;
public coreDataSeederContributor(IRepository<Address, Guid> addressRepository, IGuidGenerator guidGenerator)
{
_addressRepository = addressRepository;
_guidGenerator = guidGenerator;
}
public async Task SeedAsync(DataSeedContext context)
{
if (await _addressRepository.GetCountAsync() > 0)
{
return;
}
var address = new Address(
id: _guidGenerator.Create(),
streetNumber: 07,
streetName: "Med Salah Belhaj",
postalCode: 2080,
city: "Ariana",
country: "Tunisie"
);
//autoSave: true
await _addressRepository.InsertAsync(address);
}
}
}
Here is now the result on Swagger UI:
When I try to open the request URL, here is what it shows:
I'm sure that I may have forgotten something and that's why I get Access Denied on the Request URL, but I don't really know what it is because I'm new at this.
Could you please help me?
Thank you
There was a problem with the database. That's why it hasn't read the data I've provided in the DataSeedProvider.
I'm building an app which will scrape some data from a website and shows a notification when some criteria are met.
Everything works well without problems when the app is open (because the WebView is being rendered) but when I close the app the WebView is disabled so I cannot use it to scrape data anymore.
The scraping code is inside a class called from a ForegroundService.
I've already looked on the internet but I'm unable to find a solution or a substitute to WebView, do you have any ideas?
I'm sorry if this question looks stupid to you, I've started to develop for mobile just one week ago
Below the JDMonitoring class which is called from the AlarmTask class
using System;
using System.Collections.Generic;
using System.Net;
using System.Threading.Tasks;
using Xamarin.Forms;
namespace CGSJDSportsNotification {
public class JDMonitoring {
class Ticket {
string owner;
string title;
string store;
string lastUpdated;
string link;
public string ID { get; set; }
public string Owner {
get {
return owner == null ? "Nobody" : owner;
} set {
owner = value.Remove(0, value.IndexOf('(') + 1).Replace(")", "");
}
}
public string Title {
get {
return title;
} set {
if (value.StartsWith("(P"))
title = value.Remove(0, value.IndexOf(')') + 2);
}
}
public string Status { get; set; }
public string Store {
get {
return store;
} set {
store = value.Replace(#"\u003C", "").Replace(">", "");
}
}
public string LastUpdated {
get {
return lastUpdated;
} set {
string v;
int time = Convert.ToInt32(System.Text.RegularExpressions.Regex.Replace(value, #"[^\d]+", ""));
// Convert to minutes
if (value.Contains("hours"))
time *= 60;
v = time.ToString();
if (value.Contains("seconds"))
v = v.Insert(v.Length, " sec. ago");
else
v = v.Insert(v.Length, " min. ago");
lastUpdated = v;
}
}
public string Link {
get {
return link;
} set {
link = "https://support.jdplc.com/" + value;
}
}
}
public JDMonitoring() {
WB.Source = JDQueueMainUrl;
WB.Navigated += new EventHandler<WebNavigatedEventArgs>(OnNavigate);
}
IForegroundService FgService { get { return DependencyService.Get<IForegroundService>(); } }
WebView WB { get; } = MainPage.UI.MonitoringWebView;
string JDQueueMainUrl { get; } = "https://support.jdplc.com/rt4/Search/Results.html?Format=%27%3Cb%3E%3Ca%20href%3D%22__WebPath__%2FTicket%2FDisplay.html%3Fid%3D__id__%22%3E__id__%3C%2Fa%3E%3C%2Fb%3E%2FTITLE%3A%23%27%2C%0A%27%3Cb%3E%3Ca%20href%3D%22__WebPath__%2FTicket%2FDisplay.html%3Fid%3D__id__%22%3E__Subject__%3C%2Fa%3E%3C%2Fb%3E%2FTITLE%3ASubject%27%2C%0AStatus%2C%0AQueueName%2C%0AOwner%2C%0APriority%2C%0A%27__NEWLINE__%27%2C%0A%27__NBSP__%27%2C%0A%27%3Csmall%3E__Requestors__%3C%2Fsmall%3E%27%2C%0A%27%3Csmall%3E__CreatedRelative__%3C%2Fsmall%3E%27%2C%0A%27%3Csmall%3E__ToldRelative__%3C%2Fsmall%3E%27%2C%0A%27%3Csmall%3E__LastUpdatedRelative__%3C%2Fsmall%3E%27%2C%0A%27%3Csmall%3E__TimeLeft__%3C%2Fsmall%3E%27&Order=DESC%7CASC%7CASC%7CASC&OrderBy=LastUpdated%7C%7C%7C&Query=Queue%20%3D%20%27Service%20Desk%20-%20CGS%27%20AND%20(%20%20Status%20%3D%20%27new%27%20OR%20Status%20%3D%20%27open%27%20OR%20Status%20%3D%20%27stalled%27%20OR%20Status%20%3D%20%27deferred%27%20OR%20Status%20%3D%20%27open%20-%20awaiting%20requestor%27%20OR%20Status%20%3D%20%27open%20-%20awaiting%20third%20party%27%20)&RowsPerPage=0&SavedChartSearchId=new&SavedSearchId=new";
bool MonitoringIsInProgress { get; set; } = false;
public bool IsConnectionAvailable {
get {
try {
using (new WebClient().OpenRead("http://google.com/generate_204"))
return true;
} catch {
return false;
}
}
}
async Task<bool> IsOnLoginPage() {
if (await WB.EvaluateJavaScriptAsync("document.getElementsByClassName('left')[0].innerText") != null)
return true;
return false;
}
async Task<bool> Login() {
await WB.EvaluateJavaScriptAsync($"document.getElementsByName('user')[0].value = '{UserSettings.SecureEntries.Get("rtUser")}'");
await WB.EvaluateJavaScriptAsync($"document.getElementsByName('pass')[0].value = '{UserSettings.SecureEntries.Get("rtPass")}'");
await WB.EvaluateJavaScriptAsync("document.getElementsByClassName('button')[0].click()");
await Task.Delay(1000);
// Checks for wrong credentials error
if (await WB.EvaluateJavaScriptAsync("document.getElementsByClassName('action-results')[0].innerText") == null)
return true;
return false;
}
async Task<List<Ticket>> GetTickets() {
List<Ticket> tkts = new List<Ticket>();
// Queue tkts index (multiple of 2)
int index = 2;
// Iterates all the queue
while (await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index}].innerText") != null) {
Ticket tkt = new Ticket();
tkt.LastUpdated = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index + 1}].getElementsByTagName('td')[4].innerText");
// Gets only the tkts which are not older than the value selected by the user
if (Convert.ToInt32(System.Text.RegularExpressions.Regex.Replace(tkt.LastUpdated, #"[^\d]+", "")) > Convert.ToInt32(UserSettings.Entries.Get("searchTimeframe")))
break;
tkt.ID = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index}].getElementsByTagName('td')[0].innerText");
tkt.Owner = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index}].getElementsByTagName('td')[4].innerText");
tkt.Title = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index}].getElementsByTagName('td')[1].innerText");
tkt.Status = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index}].getElementsByTagName('td')[2].innerText");
tkt.Store = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index + 1}].getElementsByTagName('td')[1].innerText");
tkt.Link = await WB.EvaluateJavaScriptAsync($"document.getElementsByClassName('ticket-list collection-as-table')[0].getElementsByTagName('tbody')[0].getElementsByTagName('tr')[{index}].getElementsByTagName('td')[1].getElementsByTagName('a')[0].getAttribute('href')");
tkts.Add(tkt);
index += 2;
}
return tkts;
}
//async Task<string> QueueGetTkt
async void OnNavigate(object sender, WebNavigatedEventArgs args) {
if (MonitoringIsInProgress)
return;
if (IsConnectionAvailable) {
if (await IsOnLoginPage()) {
if (await Login() == false) {
// If the log-in failed we can't proceed
MonitoringIsInProgress = false;
FgService.NotificationNewTicket("Log-in failed!", "Please check your credentials");
// Used to avoid an infinite loop of OnNavigate method calls
WB.Source = "about:blank";
return;
}
}
// Main core of the monitoring
List<Ticket> tkts = await GetTickets();
if (tkts.Count > 0) {
foreach(Ticket t in tkts) {
// Looks only after the tkts with the country selected by the user (and if it was selected by the user, also for the tkts without a visible country)
// Firstly we look in the title
if (t.Title.Contains(MainPage.UI.CountryPicker.SelectedItem.ToString())) {
FgService.NotificationNewTicket($"[{t.ID}] {t.LastUpdated}",
$"{t.Title}\r\n\r\n" +
$"Status: {t.Status}\r\n" +
$"Owner: {t.Owner}\r\n" +
$"Last updated: {t.LastUpdated}");
break;
}
}
}
}
MonitoringIsInProgress = false;
}
}
}
AlarmTask class
using Android.App;
using Android.Content;
using Android.Support.V4.App;
namespace CGSJDSportsNotification.Droid {
[BroadcastReceiver(Enabled = true, Exported = true, DirectBootAware = true)]
[IntentFilter(new string[] { Intent.ActionBootCompleted, Intent.ActionLockedBootCompleted, "android.intent.action.QUICKBOOT_POWERON", "com.htc.intent.action.QUICKBOOT_POWERON" }, Priority = (int)IntentFilterPriority.HighPriority)]
public class AlarmTask : BroadcastReceiver {
IAlarm _MainActivity { get { return Xamarin.Forms.DependencyService.Get<IAlarm>(); } }
public override void OnReceive(Context context, Intent intent) {
if (intent.Action != null) {
if (intent.Action.Equals(Intent.ActionBootCompleted)) {
// Starts the app after reboot
var serviceIntent = new Intent(context, typeof(MainActivity));
serviceIntent.AddFlags(ActivityFlags.NewTask);
context.StartActivity(serviceIntent);
Intent main = new Intent(Intent.ActionMain);
main.AddCategory(Intent.CategoryHome);
context.StartActivity(main);
// Does not work, app crashes on boot received
/*if (UserSettings.Entries.Exists("monitoringIsRunning")) {
if ((bool)UserSettings.Entries.Get("monitoringIsRunning"))
FgService.Start();
}*/
}
} else
// Checks for new tkts on a new thread
new JDMonitoring();
// Restarts the alarm
_MainActivity.AlarmStart();
}
// Called from JDMonitoring class
public static void NotificationNewTicket(string title, string message, bool icoUnknownCountry = false) {
new AlarmTask().NotificationShow(title, message, icoUnknownCountry);
}
void NotificationShow(string title, string message, bool icoUnknownCountry) {
int countryFlag = Resource.Drawable.newTktUnknownCountry;
if (icoUnknownCountry == false) {
switch (MainPage.UI.CountryPicker.SelectedItem.ToString()) {
case "Italy":
countryFlag = Resource.Drawable.newTktItaly;
break;
case "Spain":
countryFlag = Resource.Drawable.newTktSpain;
break;
case "Germany":
countryFlag = Resource.Drawable.newTktGermany;
break;
case "Portugal":
countryFlag = Resource.Drawable.newTktPortugal;
break;
}
}
var _intent = new Intent(Application.Context, typeof(MainActivity));
_intent.AddFlags(ActivityFlags.ClearTop);
_intent.PutExtra("jdqueue_notification", "extra");
var pendingIntent = PendingIntent.GetActivity(Application.Context, 0, _intent, PendingIntentFlags.OneShot);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(Application.Context, "newTktNotification_channel")
.SetVisibility((int)NotificationVisibility.Public)
.SetPriority((int)NotificationPriority.High)
.SetDefaults((int)NotificationDefaults.Sound | (int)NotificationDefaults.Vibrate | (int)NotificationDefaults.Lights)
.SetSmallIcon(Resource.Drawable.newTktNotification)
.SetLargeIcon(Android.Graphics.BitmapFactory.DecodeResource(Application.Context.Resources, countryFlag))
.SetSubText("Click to check the queue")
.SetStyle(new NotificationCompat.BigTextStyle()
.SetBigContentTitle("New ticket available!")
.BigText(message))
.SetContentText(title)
.SetAutoCancel(true)
.SetContentIntent(pendingIntent);
NotificationManagerCompat.From(Application.Context).Notify(0, notificationBuilder.Build());
}
}
}
And the ForegroundService class which is responsible to trigger for the first time the alarm
using Android.App;
using Android.Content;
using Android.OS;
namespace CGSJDSportsNotification.Droid {
[Service]
class ForegroundService : Service {
IAlarm _MainActivity { get { return Xamarin.Forms.DependencyService.Get<IAlarm>(); } }
public override IBinder OnBind(Intent intent) { return null; }
public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId) {
// Starts the Foreground Service and the notification channel
StartForeground(9869, new ForegroundServiceNotification().ReturnNotif());
Android.Widget.Toast.MakeText(Application.Context, "JD Queue - Monitoring started!", Android.Widget.ToastLength.Long).Show();
_MainActivity.AlarmStart();
return StartCommandResult.Sticky;
}
public override void OnDestroy() {
Android.Widget.Toast.MakeText(Application.Context, "JD Queue - Monitoring stopped!", Android.Widget.ToastLength.Long).Show();
_MainActivity.AlarmStop();
UserSettings.Entries.AddOrEdit("monitoringIsRunning", false);
UserSettings.Entries.AddOrEdit("monitoringStopPending", false, false);
base.OnDestroy();
}
public override bool StopService(Intent name) {
return base.StopService(name);
}
}
}
Thank you!
[BETTER-FINAL-SOLUTION]
After several hours I've discovered Android WebView which does exactly what I need (I'm developing this app only for Android)
I've written this Browser helper class
class Browser {
public Android.Webkit.WebView WB;
static string JSResult;
public class CustomWebViewClient : WebViewClient {
public event EventHandler<bool> OnPageLoaded;
public override void OnPageFinished(Android.Webkit.WebView view, string url) {
OnPageLoaded?.Invoke(this, true);
}
}
public Browser(CustomWebViewClient wc, string url = "") {
WB = new Android.Webkit.WebView(Android.App.Application.Context);
WB.Settings.JavaScriptEnabled = true;
WB.SetWebViewClient(wc);
WB.LoadUrl(url);
}
public string EvalJS(string js) {
JSInterface jsi = new JSInterface();
WB.EvaluateJavascript($"javascript:(function() {{ return {js}; }})()", jsi);
return JSResult;
}
class JSInterface : Java.Lang.Object, IValueCallback {
public void OnReceiveValue(Java.Lang.Object value) {
JSResult = value.ToString();
}
}
}
[EDIT]
Improved the JS returning function with async callbacks (so the JS return value will be always delivered).
Credits to ChristineZuckerman
class Browser {
public Android.Webkit.WebView WB;
public class CustomWebViewClient : WebViewClient {
public event EventHandler<bool> OnPageLoaded;
public override void OnPageFinished(Android.Webkit.WebView view, string url) {
OnPageLoaded?.Invoke(this, true);
}
}
public Browser(CustomWebViewClient wc, string url = "") {
WB = new Android.Webkit.WebView(Android.App.Application.Context);
WB.ClearCache(true);
WB.Settings.JavaScriptEnabled = true;
WB.Settings.CacheMode = CacheModes.NoCache;
WB.Settings.DomStorageEnabled = true;
WB.Settings.SetAppCacheEnabled(false);
WB.Settings.UserAgentString = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10";
WB.LoadUrl(url);
WB.SetWebViewClient(wc);
}
public async Task<string> EvalJS(string js, bool returnNullObjectWhenNull = true) {
string JSResult = "";
ManualResetEvent reset = new ManualResetEvent(false);
Device.BeginInvokeOnMainThread(() => {
WB?.EvaluateJavascript($"javascript:(function() {{ return {js}; }})()", new JSInterface((r) => {
JSResult = r;
reset.Set();
}));
});
await Task.Run(() => { reset.WaitOne(); });
return JSResult == "null" ? returnNullObjectWhenNull ? null : "null" : JSResult;
}
class JSInterface : Java.Lang.Object, IValueCallback {
private Action<string> _callback;
public JSInterface(Action<string> callback) {
_callback = callback;
}
public void OnReceiveValue(Java.Lang.Object value) {
string v = value.ToString();
if (v.StartsWith('"') && v.EndsWith('"'))
v = v.Remove(0, 1).Remove(v.Length - 2, 1);
_callback?.Invoke(v);
}
}
}
Example:
Browser.CustomWebViewClient wc = new Browser.CustomWebViewClient();
wc.OnPageLoaded += BrowserOnPageLoad;
Browser browser = new Browser(wc, "https://www.google.com/");
void BrowserOnPageLoad(object sender, bool e) {
string test = browser.EvalJS("document.getElementsByClassName('Q8LRLc')[0].innerText");
// 'test' will contain the value returned from the JS script
// You can acces the real WebView object by using
// browser.WB
}
// OR WITH THE NEW RETURNING FUNCTION
async void BrowserOnPageLoad(object sender, bool e) {
string test = await browser.EvalJS("document.getElementsByClassName('Q8LRLc')[0].innerText");
// 'test' will contain the value returned from the JS script
// You can acces the real WebView object by using
// browser.WB
}
[FINAL-SOLUTION]
Finally I've found an easy and efficient alternative to WebView.
Now I'm using SimpleBroswer and works great!
[SEMI-SOLUTION]
Alright, I've written a workaround but I don't really like this idea, so please, if you know a better method let me know.
Below my workaround:
In my ForegroundServiceHelper interface I've added a method to check if the MainActivity (where the WebView it's rendered) is visible or not, if isn't visible the MainActivity will be shown and immediately will be hidden back.
And the app will be removed from the last used applications
Method inside my ForegroundServiceHelper Interface
public void InitBackgroundWebView() {
if ((bool)SharedSettings.Entries.Get("MainPage.IsVisible") == false) {
// Shows the activity
Intent serviceIntent = new Intent(context, typeof(MainActivity));
serviceIntent.AddFlags(ActivityFlags.NewTask);
context.StartActivity(serviceIntent);
// And immediately hides it back
Intent main = new Intent(Intent.ActionMain);
main.AddFlags(ActivityFlags.NewTask);
main.AddCategory(Intent.CategoryHome);
context.StartActivity(main);
// Removes from the last app used
ActivityManager am = (new ContextWrapper(Android.App.Application.Context)).GetSystemService(Context.ActivityService).JavaCast<ActivityManager>();
if (am != null) {
System.Collections.Generic.IList<ActivityManager.AppTask> tasks = am.AppTasks;
if (tasks != null && tasks.Count > 0) {
tasks[0].SetExcludeFromRecents(true);
}
}
}
}
The SharedSettings class is an helper class wrapped around the App.Current.Properties Dictionary
And in the OnAppearing and OnDisappearing callbacks I set the shared values to true/false
[EDIT]
This workaround works only if the user is on the homepage, so I need to find an another solution...
Task is to call a third party service/wrapper multiple times and get the response. Below is the sample code and I am trying to figured out how to create singleton instance for the service.
class Program
{
static void Main(string[] args)
{
List<string> trips = new List<string>();
trips.Add("ABC");
trips.Add("XYZ");
foreach (string s in trips) {
Test.TestMethod(s);
}
}
}
public static class Test
{
public static bool TestMethod(string trip)
{
BridgeApiClient bridgeApiClient = new BridgeApiClient("http://localhost/Service.svc", "username", "password");
TripRequest tr = new TripRequest();
tr.TripNumber = trip;
var response = bridgeApiClient.GetTrip(tr);
return true;
}
}
You can just declare a static member variable and use that:
public static class Test
{
private static readonly BridgeApiClient bridgeApiClient = new BridgeApiClient("http://localhost/Service.svc", "username", "password");
public static bool TestMethod(string trip)
{
TripRequest tr = new TripRequest();
tr.TripNumber = trip;
var response = bridgeApiClient.GetTrip(tr);
return true;
}
}