I am developing a windows phone application. In this app I am downloading some files and stored them in isolated storage. I need to open these files. For that I tried different methods, but I can't.
The same question is asked here.
The answer says I cannot open a file from isolatedstorage. But I am trying the same in the Mail Client in my Windows Phone (hotmail client). I sent some .doc, .ppt, .pdf, .xls to my email and tried to open these attached files in my phone through mail client. I can open the files in my phone. I need to do the same in my application also. How can I do this in my app?
You will not be able to open these types of files from the isolated storage. There is no way for third-party applications to launch the external application required for viewing these file types. The Mail Client is a native application that runs outside the protected sandbox which third party apps are subjected to.
One solution you can utilize though is to upload the file to an external server and launch it using the WebBrowserTask class. I am not going to give the code required to upload the file, as that will depend on your environment, but once uploaded, here is how you can launch it:
WebBrowserTask webBrowserTask = new WebBrowserTask();
webBrowserTask.URL = "http://www.foo.com/bar.pdf";
webBrowserTask.Show();
I should mention that this will only work for an external file. It will not work if you try to reference a file in isolated storage. You will need to upload the file somewhere.
Related
I want to distribute my UWP app using side-loading.
I have created the .appxbundle using Visual Studio, and also EV code-signed it.
So, when the user clicks on the .appxbundle file, my app is properly installed and the user can start working with it!
In this way, I can place such .appxbundle on my website, and the users can download and install it. Marvelous.
Now, I would like to customize each download, by adding a file with some tracking information to attribute a download e.g. to a specific ad campaign that I am running.
So my server can generate a ZIP file containing the .appxbundle and a little .txt file containing the tracking info (I need to generate a separate file because the signed .appxbundle takes too long - several minutes - to regenerate each time).
The user then unzips the ZIP file, clicks on the .appxbundle and installs the app.
The tricky part is that, during the installation of the app, I would like to copy the .txt file into the LocalState folder of the app that is being installed.
Is it possible?
How can I do that?
Thanks!
If your users are going to install the app by clicking a ms-appinstaller:// link, you can attach extra data using the activationUri.
This can be a custom URL scheme that you register for your app with any url parameters. The appinstaller will call this url once the app is installed.
We use this to pass login information to the app, like this:
ms-appinstaller:?source=https://localhost:8000/myApp.appinstaller&activationUri=my-app-track-install:?campaign=billboards
If your app registers for the my-app-track-install url scheme in the Appxmanifest, then from the apps perspective the first launch is then a url activation with the url you added as activationUri. In your case you would track the install, and then proceed to launch the app normally.
You can find more info on this in the example and remark for this (semi-related) api-documentation:
https://learn.microsoft.com/en-us/uwp/api/windows.applicationmodel.package.getappinstallerinfo?view=winrt-19041
I have a rails app with file attachments using paperclip. Images and pdfs work fine in that if I click on the linked attachment, the image or pdf opens. If I right click, I can do a save-as.
However, with Office files such as word.docx, I can only download the file. If I go do Dos and type the filename, it will open in MS word. Therefore, I think that I should be able to use the system or system call and just pass the attachment name from paperclip (ie attachment.image.url) to dos and the file should open. I think the command I want would be something like
system(attachment.image.url)
I can't figure out how to write the statement to do that.
Your browser will not (and should not) allow you to execute anything outside of the browser itself, this means that without some external app making the call to your Rails app from the clients machine, you will not be able to open the Word doc without downloading it.
You are able to open the images and PDFs in the browser because the browser supports them, but most browsers won't open Word docs.
You can either have the user download the file, or maybe use a third party viewer that you can open the word doc with inside the browser.
My application downloads a PDF and stores it in the LocalState folder for my Windows 8 app.
I have a link within the app that I would like to show the PDF when the user clicks it.
I've tried displaying it using ms-appdata:///local/pdfs/filename.pdf in a window.open call and I also tried using the InAppBrowser plugin within cordova with no luck. Additionally, I've tried the following:
var uri = new Windows.Foundation.Uri('ms-appdata:///local/pdfs/filename.pdf');
var file = Windows.Storage.StorageFile.getFileFromApplicationUriAsync(uri);
Windows.System.Launcher.launchFileAsync(file).done();
I know the file exists as I'm getting a file result back. Just not sure how to allow the user to view it.
By design, the local appdata folder on Windows is accessible only to that app, or to full-trust desktop applications (and this is probably true of similar sandboxed locations on other platforms). As a result, a Windows Store app that gets launched with Launcher.launchFileAsync won't be able access that location (nor can a webview process, which is also sandboxed). If a desktop application gets launched, on the other hand, it probably can access the file, but you can't tell ahead of time if that's the case. Bottom line is that local appdata isn't a good location for letting other apps get at the file.
You'll need to save the file in another location that is accessible to other apps. There are two approaches here, both of which will require a little user interaction to select a location, so they can place the PDFs anywhere they want:
Have the user select a save folder for your app, which they can do once. You would invoke the FolderPicker for this purpose, and save the selected folder in the FutureAccessList. This way you can have the user select the save folder, which grants you consent to save there, and by saving it in the FutureAccessList you can retrieve it in subsequent sessions without having to ask the user again. Refer to the File Picker Sample and the File Access Sample for more.
Have the user select a save location for each individual file, using the FilePicker (see the same sample), and you can also use the access cache to save permissions to those individual locations if you need them later.
There might be Cordova plugins that work with these APIs too, but I haven't checked. Either way, once the file is in an accessible location, launching the file should work just fine.
As an alternate solution, you could consider rendering the PDFs directly in your app. Windows has an API for this in Windows.Data.Pdf, with an associated sample. There might be a plugin or other JS libraries that could also work for this.
Is it possible to associate a particular file extension with my app in wp7.1?
I would like to allow the users of my app to email files of a particular type to each other and then when they click on the attached email file it would launch my app so it could process the file and add it to isolated storage.
No, it's not. You need a "special permission" from Microsoft to do it, that's how Adobe was allowed to do it.
But there's no part of the official released SDK that allows for it.
So I have a website running that displays full path of a TFS File on the page somewhere, I want the user to be able to click on it, which should then open up that file from TFS inside their Visual Studio.
The command to do this inside Visual Studio is "File.TfsOpenFromSourceControl" (DTE command) - it's basically the user manually going to that file using the Source control explorer and double clicking to open it up.
I am wanting to simulate that action from my web app inside the browser.
Update: The Web app is a pure ASPNet MVC app with Jquery available to it. I am already showing the file's content to the user in the web app. But I want the user to open the same file in Visual studio, by clicking on the file path in the web app. The question is more of Browser to VS integration and how to execute the DTE command in question, from within the web app context of the browser.
Any clues would be helpful
I don't know the answer to Pavel's question, so I'll sketch an outline of both solutions.
If you want to display the file inside the browser, call the Item.DownloadFile() API. NB: in 2008 SP1 there is another overload of this method that allows streaming into a memory buffer instead of writing directly to the filesystem. If you don't already work with Item objects directly, you can retrieve them via the GetItem() / GetItems() APIs.
If you want to make the file open in VS, there are a couple approaches. Perhaps your web app already includes the concept of local workspace(s) for the user, similar to Source Control Explorer. If so, you'd simply call Workspace.GetLocalItemForServerItem() to find the local path of the item, then ShellExecute it. (Or maybe pass it as a command line parameter to devenv.exe, if it's not natively associated with VS.) If not, you can either create a temporary workspace on behalf of the user, or use the same DownloadFile() API shown before; stream the contents to the client over a web service, save to disk, then launch VS as before.
Naturally, the more involved scenarios under option #2 will require deeper OS integration than the DOM / Javascript can provide. Would help to know if this web app is already built on ActiveX, Flash, Silverlight, XBAP, or similar technology...