in my windows phone 8 application i am using custom uri association to launch another application through my phone.
i.e
await Windows.System.Launcher.LaunchUriAsync(new Uri("sixtag:"));
but my app is not able to get certified for store because of this. the testing team tells that you app terminates unexpectedly while executing this.
now, i don't know how to deal with this.
is there any way to throw exception if the app which i am launching is not installed on phone ?
or i should try something else so my task gets accomplished and app gets certified for store as well.
You do not need to wrap your launch in try/catch or check for success as described in the other answers. As soon as you call LaunchUriAsync, the platform takes over and will automatically handle the possibility of no app being installed by asking the user if she wishes to search in the store.
A couple of things to double-check:
1) Ensure that you can successfully back into your app following the navigation to sixtag.
2) Ensure that your call to LaunchUriAsync is the direct result of a user action (eg. tapping a button)
try
{
await Windows.System.Launcher.LaunchUriAsync(new Uri("sixtag:"));
}
catch
{
MessageBox.Show("please install Sixtag from the app store","AppMissing", MessageBoxButton.OK);
}
you can perhaps display another button and on clicking directly navigate to the app store. See if this solves your problem. Do vote it up if it does :)
You are needed to handle that as shown here . Also Read out Remarks given there.
Related
I have a Line-of-Business (LoB) Windows 8.1 Store application I developed for a client. The client side-loads it on several Windows 10 tablets. They use it in an environment where WiFi is spotty at best and they would like to get some sort of notification inside the app, regardless of what page they are on, notification that will let them know that they've lost connectivity to the network. I have created a method on my Web API that is not hitting the repository (database). Instead, it quickly returns some static information regarding my Web API, such as version, date and time of the invocation and some trademark stuff that I'm required to return. I thought of calling this method at precise intervals of time and when there's no response, assume that the Web API connectivity is lost. In my main page, the first one displayed when the application is started, I have the following stuff in the constructor of my view model:
_webApiStatusTimer = new DispatcherTimer();
_webApiStatusTimer.Tick += OnCheckWebApiStatusEvent;
_webApiStatusTimer.Interval = new TimeSpan(0, 0, 30);
_webApiStatusTimer.Start();
Then, the event handler is implemented like this:
private async void OnCheckWebApiStatusEvent(object sender, object e)
{
// stop the timer
_webApiStatusTimer.Stop();
// refresh the search
var webApiInfo = await _webApiClient.GetWebApiInfo();
// add all returned records in the list
if (webApiInfo == null)
{
var messageDialog = new MessageDialog(#"The application has lost connection with the back-end Web API!");
await messageDialog.ShowAsync();
// restart the timer
_webApiStatusTimer.Start();
}
}
When the Web API connection is lost, I get a nice popup message that informs me that the Web API is no longer available. The problem I have is that after a while, especially if I navigate away from the first page but not necessary, I get an UnauthorizedAccessException in my application.
I use the DispatcherTimer since my understanding is that this is compatible with
UI threads, but obviously, I still do something wrong. Anyone cares to set me on the right path?
Also, if you did something similar and found a much better approach, I'd love to hear about your solution.
Thanks in advance,
Eddie
First, If you are using Windows Store Apps, then you could possibly use a Background task to check poll for the status of the web api instead of putting this responsibility on your view model, its not the viewmodels concern
Second, if you are connecting from your Windows store app to your API then one successful authentication/ authorization for the first time, how and where do you store the token (assuming you are using token authentication). If you are (and ideally you should), is there a timer that you start which is set to the token expiration time? Is your local storage getting flushed somehow and loosing the aurthorization data?
Need more information.
I'm trying to use OpenAs_RunDLLW to let the user select application he wants to open specific file with. But I don't want to really launch anything, just to let the user select and remember his choise so I can then open the file with this program later. In Windows XP, Vista and 7 OpenAs_RunDLLW finally used to call ShellExecuteExW, so I could temporary put the int 3 opcode at the beginning of this function, catch the exception and get all parameters passed to ShellExecuteExW. This was good and really worked.
But under Windows 8/8.1 it seems that OpenAs_RunDLLW does not call ShellExecuteExW, since the breakpoint is never hit. The selected app is launched instead. So, my question is - which API function does OpenAs_RunDLLW finally call to execute the program under Windows 8?
I believe that the shell now uses IAssocHandler::Invoke to open the item. However, you probably don't really care about that; what you want is a way to find out how to get the invocation handler.
For that, you want ShAssocEnumHandlers, which takes a file name extension and returns an association enumerator (that is, a function that will enumerate all the various applications that can open that extension).
On Windows Vista and later, use SHOpenWithDialog() instead of calling OpenAs_RunDLL(), and then use SHAssocEnumHandlers() to find out which handlers are registered and to invoke a particular handler when needed, instead of using ShellExecute().
My goal is to perform Single sign on functionality from my WPF application which has a embedded browser . Single sign on needs to be implemented for this so that the user should not be asked to enter this credentials again to check the reports from the wpf browser. I need to create a local environment for testing this functionality from my side since I am developing for a product i.e a sql report which has forms authentication and logging to the report from my application. I have browsed almost everything on the net regarding this implementation and the sample provided by microsoft for forms authentication is not working. I also find certain condition that the sample will not work in Itanium based processors etc.. and I am working on ssrs 2012. Sign on with capturing the DOM of reporting site and peforming the login wouldn't be a good idea since this is for a product and reporting login will not be same. I am thinking of implementing with Httpwebrequest and Response, but still not clear on implementing. Some one please provide me crisp and working solution for my implementation. Thanks in advance.
Some one please provide me crisp and working solution for my
implementation.
I wouldn't count on that, especially if you're asking for a source code solution.
Single sign-on assumes that you still have an authentication server somewhere, something like Google OAuth. From your question, it isn't quite clear to me if that's what your looking for. If you just need to supply custom credentials to WebBrowser control, that's still possible, but that solution is for WinForms version of WebBrowser control. The WPF version is sealed from customization, so you may have better luck hosting the WinForms WebBrowser in your WPF project, using WindowsFormsHost.
I finally found the way for Implementing single sign on for reporting services. The standard way for implementing single sign on for forms authentication is by using custom security extension sample. The configuration is a bit tricky, But once the configuration is done single sign on needs to be done by getting the auth token by calling Logonuser() methon in reporting service. The below code passes the credentials and returns auth token.
Configuring forms authentication can be found detailed here
http://www.codeproject.com/Articles/675943/SSRS-2012-Forms-Authentication
The below code helps me to achieve single sign on.
[DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool InternetSetCookie(string lpszUrlName, string lpszCookieName, string lpszCookieData);
private void GetAuthToken(string username, string password)
{
// Step1: Add reference to report service either by directly referencing the reportinservice.asmx service of by converting wsdl to class file.
ReportServerProxy2010 rsProxy = new ReportServerProxy2010();
//Step2: Assign the report server service eg:"http://<servername>/ReportServer/ReportService2010.asmx";
rsProxy.Url = string.Format(ReportServerUrl, ReportServer);
try
{
rsProxy.LogonUser(username,password, null);
Cookie authCookie = rsProxy.AuthCookie;
if (authCookie != null)
{
//Internet Set Cookie is a com method which sets the obtained auth token to internet explorer
InternetSetCookie(Url, null, authCookie.ToString());
}
}
catch (Exception ex)
{
}
}
//When navigating now, the auth token is accepted and report manager page is displayed directly without asking for login credentials.
WebBrowserControl.Navigate(new Uri("");}
I have a WP8 HTML/JS app and I need to save some simple data on the local storage. It should be something very easy, but it is giving my a headache already.
I tried to call the localStorage in many different ways but it doesn't work. The error message I get is:
The system cannot find the file specified.
The strange part, is that the sessionStorage seems to be fine. At least I don't get any error using that object.
Additional info:
- The ways I called localStorage are: localStorage.setItem(), window['localStorage'], window.localStorage, etc. they all say the same message.
- I am developing a Windows Phone HTML app OS8.
- The method I call the localStorage is in $('#channels').bind('pagebeforeshow', function (e, data) {...}
- The only references in the project are .Net for Windows Phone and Windows Phone.
- Some of the js libs I included are jQuery, jQuery mobile and ko.
- I am testing on both WP8 device and Emulator
I prefer not to use phoneGap and any other known db for devices, since I wouldn't like to involve interaction with the native code just to make the call to fetch and save some data.
UPDATE 1:
After thefrontender comment, I investigated one by one my js refs. The problem appear when I add the jqm 1.3 min.
All js are bundled with my app. Any other suggestions?
$(function () {
try {
localStorage.setItem('aaa', 123);
alert(localStorage.aaa);
}
catch (err) { alert(err.message) }
});
And if you replace
alert(localStorage.aaa);
with
alert(localStorage.getItem('aaa');
I got my answer form jQuery official forum after all.
You need to add modernizr with atleast localStorage from HTML5 section.
Add: (first or last doent matter)
as indicated in the following post too:
http://www.pksoftlab.com/?p=1073
As windows phone 8 provides us with this method for programmatically terminate an app, will there be any issue while app submission if we use this in app for terminating a page while there is no backentry in the navigation history?
There won't be any issue in certification when using this call, but make sure you have saved all data in your app when calling this, because this call effectively kills your app immediately - ApplicationClosing even handler won't be raised after it!
Why would you call Application.Terminate when navigating back with an empty back stack? Just let the app close itself. Seems a bit pointless to me to overuse Application.Terminate().
I can't say much about the new Terminate method, but I do have an app (NOTE: Not a game) that does the following at certain points
private void Kill()
{
new Microsoft.Xna.Framework.Game().Exit();
}
This app passed certification without any problems. This was an app for both WP7 and WP8 so I did not have the ability to use Terminate().