I'm trying to use realm file from the old project with the new one.
On startup I'm checking if the realm file exists in Documents directory and if it doesn't I'm just copying realm file from the bundle to the Documents directory.
This part (copying) works but if I try to open this new realm file, XCode just crashes although this file is definitely in the Documents directory (I checked).
let fileManager = FileManager.default
let documentsURL = fileManager.urls(for: .documentDirectory, in: .userDomainMask)[0] as NSURL
let realmURL = documentsURL.appendingPathComponent("realdata.realm")
var defConfig = Realm.Configuration()
defConfig.readOnly = true
defConfig.fileURL = realmURL
realm = try! Realm(configuration: defConfig)
This file exists, and I was able to open this with RealmBrowser from the Documents directory. File permissions wasn't changed (read/write). I'm using Realm/RealmSwift 2.10.2.
Also I've tried to create new realm, and it worked ok.
Related
I am currently working on a functionality to store files. I am testing the application on an iOS simulator. When I call the File Manager to create a file I get a false response. am I able to save files to the simulator?
code:
let path = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first!.absoluteString
let response = FileManager.default.createFile(atPath: path, contents: data, attributes: nil)
print(response)
I am having problems trying to load a document into a WKWebView when the document has been added to the app using iTunes file sharing.
If I include the file inside the app I can load it fine.
I am using this code to get the load the file:
let documentsURL = try! FileManager().url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
let fooURL = documentsURL.appendingPathComponent(docFileName)
let docURL = URL(fileURLWithPath: fooURL.path)
let req = URLRequest(url:docURL)
docView!.load(req)
docURL looks like this:
file:///var/mobile/Containers/Data/Application/432E716E-F70D-4985-814C-FFE7ECE53EF8/Documents/filename.pdf
I have tried to check the file exists using this code:
FileManager().fileExists(atPath: fooURL.path)
This returns true. I have also tried to copy the file from the documents folder into the app folder but this returns an error of file not found (again this is even after checking the file exists)
Should WKWebView be able to load from this location? Or have I missed something here?
Perhaps you are looking for loadFileURL(_:allowingReadAccessTo:)
Though I didn't see it explicitly stated in the docs, it wouldn't surprise me if the security policies of WKWebView are getting in your way, and the presence of this method alone seems to confirm that ;-)
Happy coding!
I use Core Data in my application, and I want to know that where is the SQLite file located.
I have already read the relative post and I didn't find the answer.
During initialization of the Core Data Stack you decide, where the database file will be located. The standard place is the documents directory. See Apple Developer - Initializing the Core Data Stack.
You will find there the following code
let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
let docURL = urls[urls.endIndex-1]
/* The directory the application uses to store the Core Data store file.
This code uses a file named "DataModel.sqlite" in the application's documents directory.
*/
let storeURL = docURL.URLByAppendingPathComponent("DataModel.sqlite")
The storeURL is the file URL you are looking for (and docURL is just a directory without a file name included).
You can also find this directory using NSSearchPathForDirectoriesInDomains
NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as String
Check IOS 8 Store sqlite File Location Core Data for other ideas like find used in Terminal for example.
I have a set of audio files inside a folder. I am able to access the file when the file is placed at main bundle, but if the files are moved inside the folder I am not able to access the files.
Code:
let audioFileName:String = "audioFiles/" + String(index)
let audioFile = NSBundle.mainBundle().pathForResource(audioFileName, ofType: "mp3")!
I have an audio file inside the folder audioFiles and I would want to get its path.
Error:
fatal error: unexpectedly found nil while unwrapping an Optional value
First make sure when you drag your folder audioFiles to your project to check copy items if needed and select create folder references. Make sure it shows a blue folder if your project.
Also NSBundle method pathForResource has an initialiser that you can specify in which directory your files are located:
let audioFileName = "audioName"
if let audioFilePath = Bundle.main.path(forResource: audioFileName, ofType: "mp3", inDirectory: "audioFiles") {
print(audioFilePath)
}
If you would like to get that file URL you can use NSBundle method URLForResource(withExtension:, subdirectory:)
if let audioFileURL = Bundle.main.url(forResource: audioFileName, withExtension: "mp3", subdirectory: "audioFiles") {
print(audioFileURL)
}
The answer by Leo should work, the critical step is checking "Copy Items if Needed". However, what do you do if you already created a file or forgot that critical step?
Its easy to fix.
Go to Project -> Build Phases -> Copy Bundle Resources
Here you will see a handy list of all the files you've added to your bundle (including all your xcassets!)
Click the add button, and find your missing unlinked file.
Your code will now work (I built my own example, so it won't be same as yours in name):
if let url = Bundle.main.url(forResource: "testData2", withExtension: "txt") {
do {
let myData = try Data(contentsOf: url)
print(myData.count)
} catch {
print(error)
}
}
So why weren't we finding the file to begin with? Simple. We were asking the bundle. "Hey where is my file". Bundle was like... I don't know about that file, and if you checked the list of what was part of it (the Bundle Resources that are being copied) it wasn't there. taDa!
my app was rejected because of the size of the content that it uploads to iCloud. The only file in my app's Documents folder is the default.realm database file. I think that this is the file that iCloud is uploading. How can I prevent iCloud to upload the database to iCloud?
Thanks.
According to the App Backup Best Practices section of the iOS App Programming Guide, <Application_Data>/Library/Caches or <Application_Data>/tmp will not backup to iCloud. Generally, you can use <Application_Data>/Library/Caches directory to save your data that you won't backup to iCloud.
To change the file path of Realm, you can pass the path parameter when creating Realm instance, like below:
let realmPath = NSSearchPathForDirectoriesInDomains(.CachesDirectory, .UserDomainMask, true)[0] as! String
let realm = Realm(path: realmPath.stringByAppendingPathComponent("data.realm"))
Otherwise, you can use NSURLIsExcludedFromBackupKey file system property to exclude files and directories from backups (See Technical Q&A QA1719). If you want to use the default path, there is the only way to exclude Realm file from backups.
let realm = Realm()
if let realmPathURL = NSURL(fileURLWithPath: realm.path) {
realmPathURL.setResourceValue(NSNumber(bool: true), forKey: NSURLIsExcludedFromBackupKey, error: nil)
}
Looks like the URL API has changed since the previous answer was posted. This is how you can disable the backup now:
let realm = try! Realm()
guard var url = realm.configuration.fileURL else {
return
}
var resourceValues = URLResourceValues()
resourceValues.isExcludedFromBackup = true
try? url.setResourceValues(resourceValues)