I have a data file that I need to include with my app when I distribute it. When loading any files in the app, I prefix the file name with:
Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
This works great for anything I create within the app (and for reading back), like files I download in response to a user action. But I can't for the life of me figure out how to place files there when I build my app in Visual Studio.
I've tried making a "Documents" subdirectory in the special "Resources" folder, but that didn't work (I tried setting the "Build Action" to both BundleResource and Content). When I look at the folder for my app (from using the simulator) I can see that in the "Documents" folder there's all the files I downloaded, but I can't find my data file that I'm trying to bundle ahead of time. I even searched my entire hard drive on the Mac and still couldn't find said data file.
The data file isn't an image, if it matters. Just raw binary data. How do I set it up so that this file goes into the proper documents directory at compile time, so that I can read it using the SpecialFolder.MyDocuments prefix? Thanks.
You can't. You can include files in your app bundle, and then at startup copy them from the bundle into a user folder. But this won't happen automatically.
Related
I have an electron app, and when I make it, it packages and compiles everything.
Sounds like it works perfectly right?
Well, problem is I want one of the folders to not be compiled, but still be accessible by my static files, so the users can add or remove content from the folders.
I've tried making it in a seperate folder, but then it can't find the files even when it's placed in the correct relative path.
Overall, I want my app to exist next to a folder and my <script src="./folder/script.js"></script> to actually be able to access it.
I'm new to basically anything node or electron so i'm probably making some dumb mistake.
Thanks in advance.
Having your user touching files close to your Electron application may be fraught with danger. If they accidently overwrite an important file or accidently delete an important file then your application may stop working and require the user to perform a re-install.
Instead, have any default files the user may need to "touch" packaged up with your application and then upon your applications first run, copy these files (and any necessary folder structure) over to the users home, desktop, documents, downloads or even userData directory.
That way, your application will always know where to find them and the directory is a directory your user will already be comfortable adding files to and removing files from.
You can always let the use choose where these files are stored as a settings option which persists in an application setting file, using something similar to path.join(app.getPath('userData'), 'settings.json');
See Electron's app.getPath(name) for more information.
I am working on an app that saves files to the documents directory, and then saves an absolute path for each of those files in an entity using core data. The issue is that each time I rebuild and run my app on my device, the app is saved in a different generated directory, and those file paths are now incorrect. However, my documents directory is still preserved.
I have three questions about this:
If an app is updated on the store, does it then go in a different generated directory, thus invalidating any absolute paths that could be saved in the documents directory?
This is extremely unlikely but is there any way to specify in Xcode to build the app to the same directory the previous build was in?
Is there a way to specify in Xcode that you would like all documents and data wiped with each new build you load on the device?
Thanks everyone!
You said:
"I am working on an app that saves files to the documents directory, and then saves an absolute path for each of those files in an entity using core data."
Don't do that. Ever. The path to your documents directory will be different on different devices, and different if you delete your app and reinstall it. Absolute paths are pretty much guaranteed to fail.
Use paths relative to the sandbox directory in question (documents directory, temp directory, etc)
I am able to see the source code from my .app file that is i am able access image
files. How can i restrict that? I dont want my user to access the files from app. Please help me in resolving this issue.
Update: Sorry i was supposed to write .h/.m files are not accessed but image files can..
There is a mismatch in type , i didn't observe
You cannot see code from the IPA you upload to the store. No one can see your code. Someone could, however, see you image files, audio files, sqlite files, plist files, etc.
Per your update:
You cannot prevent the files from being accessed. It's like the web: if you can see it, you can steal it.
I developed an Ipad app which download different kind of files, but after a week or some days the downloaded files are removed and the app that open the file can find it anymore.
Could anybody help me, Where should I save downloaded files in my app to avoid that the file came automatically deleted?. IOS usually remove downloaded files after certain time?.
I already read this apple documentation
I know that maybe is not something complicated but I can't figure out why the file is removed If anybody can help me I'll appreciate that.
Put data cache files in the /Library/Caches
directory. Examples of files you should put in this directory include
(but are not limited to) database cache files and downloadable
content, such as that used by magazine, newspaper, and map apps. Your
app should be able to gracefully handle situations where cached data
is deleted by the system to free up disk space.
Most probably you are using caches/temp directory which the system can clear contents of in case of low space. To avoid deletion use Documents Directory.
If you are already storing in documents directory, then the file can appear missing if you are storing its hardcoded path , which can change during app update. Try storing relative path and log the contents of your documents directory to see what files exist.
save the files in your local sqlite db, data core or if you can serialize them with the standard user defaults
is there a way that I can add sample files to the documents folder of an iOS-app before the app is actually started for the first time. For instance at install time.
For instance, I am writing a text editor and want to have a sample document, that the user can look at showing some of the features of the app. Could this sample be placed in some folder in Xcode and added to the documents folder automatically or do I have to add it from my code, the first time the app starts?
You can access files in sandbox.
Add some resources files. You can load them and save them the way you want.