I'm trying to create a map viewer for an existing C# WinForms application. I've installed and hooked up the GreatMaps (GMap.net) controls no problem and that's all working fine. The quirk in this is that it needs to work offline (as it's an application that gets used by users who aren't always in locations where there's a mobile signal).
The offline cache mode works fine for GMap but, we've got to build the cache beforehand which we can do but, as we need the whole of the UK, will be a pain (especially as we have to go down to street level).
Does anybody know if there any existing cache files that we can download and use? I've looked at downloading OSM files but haven't got the faintest idea how to use them, convert them (into the gmdb format that GMap seems to use).
Any ideas?
Check out VectorTileRenderer (https://github.com/AliFlux/VectorTileRenderer) which has a demo for Gmap.net. All you need is an MBTiles file which you can download for free at OpenMapTiles.org (https://openmaptiles.com/downloads/europe/british-isles/)
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I've read a few threads where this is discussed. Shai's response has always been that files can only be read, but not written into shared locations
Perhaps saving other type of files isn't so simple but shouldn't there be an option for saving pictures in CN1?
I haven't seen the Whatsapp Clone code, but if it truly is a clone shouldn't it have the option to share pictures (and possibly files). Or is it a simple text chat that perhaps shares pictures that can never be saved outside the app?
I also read somewhere (6 months ago) that Shai said that this should be a feature of CameraKit. Does this mean that this feature is in development? If so, that would be great. But having an ETA would also be great to align with our own devs
If it isn't being developed, can I at least know if this is something I can develop natively within CN1?
We expose the full file system so you can write to any place the native App can write to. Native apps don't have write access to the gallery directory and need to explicitly request it to put a file there. This can be accomplished easily in any external cn1lib (e.g. we could do it in camera kit) but haven't done it for camera kit or the whatsapp clone.
AFAIK there's no RFE open on this feature so I can't even tell you if it's assigned to a specific milestone.
I have a requirement where my app records the video files and stores them in app's documents directory. I want no other app should access these files other that my app. I have set file sharing enabled to NO. But I see some apps like iExplorer can show the video files saved under my app's documents directory. Can I know how this can be avoided.
I have also heard that by mounting the iOS device disk to any unix/linux machine can list out all the contents of the app sandbox.
So I want to know how to prevent this happening.
I tried with adding NSFileProtectionComplete as a attribute when saving the file. But this didn't solve the problem. Please help me on this.
Thanks,
I realize this is a little old but in the hopes of helping the next person who stumbles upon this:
You're probably looking for an encryption solution, combined with the standard steps for hiding your app documents folder as you've mentioned. Encryption won't necessarily hide the files but it will make them unreadable.
NSFileProtectionComplete only encrypts files when the device is locked. See the App Programming Guide for iOS section Protecting Data Using On-Disk Encryption. Also, keep in mind that when testing this, you'll have to wait 10-20 seconds after the device is locked before trying to verify that the file is inaccessible. If you want the encryption to persist past that point you'll have to handle it yourself. Something along what's described in this SO post perhaps.
I would like to have an upload control on an intranet website, which needs to support multiple file upload. Drag and drop is not required, I just want to select a lot of files (in hundreds, possibly) for processing on the server. After the uploads are complete the user will be redirected to another page where he'll be able to process the results.
I'd also like to support other browsers, but IE is the most important as most of the customers use it as per their IT policy and it cannot be changed. Their computers are restricted enough and Silverlight might be the way as it's official Microsoft plugin, compared with Flash.
I would like to have a form with a “Browse” button which allows the user to pick files, then the file names are added to a list and “Upload” button that starts the upload to a server side code that saves the file somewhere and redirects the user to the next page.
I think that I should use Silverlight for IE7/8/9 and HTML5 for Firefox, Safari, Chrome and Opera (and IE10, eventually). That would mean coding two separate (html5+silverlight) front-ends and one common back-end on the server.
I know that Telerik has something exactly like this and works, but it's too expensive as I need only one control of their library.
Is there something open-source that works this way? Or is there a better and simpler way to support IE and HTML5 file-compliant browsers?
Silverlight will work in all the browsers, so that's the way to go (right now). After IE 10 comes out, then HTML-5 might be a better choice.
flash is the solution, as flash 7 was shipped by default in windows xp.
but in the end something's got to give, it professionals will have to say no to corporations that have operating systems older than 10 years.
Look at this jquery plugin http://blueimp.github.com/jQuery-File-Upload/
I know this post is a bit older, but have you looked at pulpload or even uploadify? Both provide HTML5 and Flash versions.
Pulpload is somewhat more versatile, it seems, but I have implemented uploadify a few times, and the docs are ... good enough (I think version 3 of uploadify is much better, but I don't have experience implementing it, yet).
I have an application for a huge business, which needs many pages, controls etc. The .xap file easily goes up to 50MB. I notice that every time when I load the page, the .xap file got downloaded to my local. However, my users may use 3G network to connect, so it must be very slow if we downlaod the app everytime they open the page. So I was wondering if there is some way I can do the deployment similar to WPF, which only download to local when the version is changed....
Any other suggestion to improve the loading speed is welcomed.
Thanks a lot
First and for most get your web server caching headers sorted. Typically you open the ClientBin folder in IIS Manager and enter the HTTP Response Header section. Set expiry to something like 1 Day (or if you update during normal working hours set to 15 Minutes). Note just because the content expires doesn't mean it will be re-downloaded but it does mean it'll get cached before being used. The browser will inform the server of the version it currently has if it has expired allow the server to simply respond with "go ahead and use that it hasn't changed since the last time you checked".
For such a large system you should seriously consider dividing the app up into multiple dll projects. Then use the Application Library Caching feature found in the main apps project properties. You need to create the appropriate .extmap.xml files for each of your dlls. Many of the SDK and Toolkit dlls have them already. This results in separate .zip files for these dlls being placed in the ClientBin folder and not incorporated into one large Xap. This allows you separate slow moving / never changing code into a set of zips and more frequently changing business code into another set. When you update the app the you only update the changed zips thus reducing the download burden of a new version. (Note this only works with inbrowser based apps).
In the serverlight project option, check the Reduce XAP size by using application library caching.
I have an ASP.NET app in which I've used Vertigo's SlideShow 2 silverlight image gallery component. All was working well and the app went through testing and suddenly, after a recent deployment I get an alert box that says:
IMPORTANT: Remove this line from json2.js before deployment.
This pops up after the Silverlight component loads but then the SlideShow2 xap file seems to work fine after that.
Anyone have any ideas on why this would just start happening? I've done some research and can't come up with much and it's pretty mysterious that it just started happening. I've not directly used json2.js in this application nor have I customized the Slideshow 2 component in any way.
It also happens both in my dev and production environments.
-Kevin
Something like this?
From http://tech.groups.yahoo.com/group/json/message/1413:
Thu Dec 10, 2009 5:23 am
The server at JSON.org is getting
hammered. It turns out that there are
some sites that are linking directly
to json2.js instead of dispensing it
from their own servers. By far the
heaviest impact is from
onlinebootycall.com. My intention was
to provide the world with a free
implementation, but the world can buy
its own bandwidth.
So I have added this line as the first
line in the json2.js file:
alert('IMPORTANT: Remove this line
from json2.js before deployment.');
It will not break anything, but it
should help get a message to the
onlinebootycalls that you should not
load code from strange third party
servers. It is not safe.
- "Douglas Crockford" <douglas#...>
Don't link to json.js OR json2.js directly from json.org. It is bad etiquette, it uses their bandwidth for your site.
Copy the file to your own server, remove the line, and redeploy.
p.s. what are you using silverlight for at onlinebootycall.com? Curious... ;)
In doing more research (and taking a step back to evaluate my environment), the implementation of SlideShow2 I am using is a modified one from an opensource CodePlex project. This particular version supports streaming images and albums from Picasa's web albums. The version I'm using is located here: http://slideshow2picasa.codeplex.com/. In checking out their online dmeos they exhibit the same behavior so obviously this implementation is linking to the json2.js file on your servers as a means to interact with Picasa web.
Today I'll take at their code and see if I can rely on a local copy fo json2.js.
Thanks for helping me out.