Can I get storyboard XML source code programmatically somehow and send it to server?
For example:
let sourceCode = storyboard.getCode()
Or maybe can I send the whole file to server and have the server parse it by itself?
Well you can read the content of the storyboard-file if you know its name.
let filePath = NSBundle.mainBundle().URLForResource("MyStoryboard", withExtension: "storyboard")
let fileURL = NSURL(string: filePath)
do {
let filecontent = try String(contentsOf: fileURL, encoding: .utf8)
//submit filecontent to your server
}
catch {/* error handling here */}
This will give you the filecontent as a string. If you need to parse it as XML you will need to use some kind of XML-parser like e.g. NSXMLParser.
Related
I'm using this code to save a string to an xml file in my project
let saveTo = statisticsI.toXMLString()
let filepath = Bundle.main.url(forResource: "statistics", withExtension: "xml")
let filepathAlt = Bundle.main.path(forResource: "statistics", ofType: "xml")
print(filepathAlt!)
do {
try saveTo.write(to: filepath!, atomically: false, encoding: String.Encoding.utf8)
let contents = try String(contentsOfFile: filepathAlt!)
print("FILE CONTENTS \(contents)")
}
catch let error as NSError {
print("Error writing values \(error)")
}
Printing the file contents returns the xml correctly, but when I stop running the application, the file hasn't been updated
When the above code is run, the file has already been read by a seperate function. Is the fact that the file has already been accessed (and its path still stored in a variable) the issue?
when I stop running the application, the file hasn't been updated
You can't write into the application bundle in iOS. Try using a path into the Documents folder or some other place within the app's sandbox.
I'm struggling to get an image file loaded in Swift 3.
Here is the code:
do {
let imageData = try Data(contentsOf: imageUrl2.asURL())
} catch {
print ("loading image file error")
}
And the current Url String is:
file:///Users/veikoherne/Library/Developer/CoreSimulator/Devices/889A08D5-B8CC-458C-99FF-643A4BA1A806/data/Containers/Data/Application/F64ED326-7894-4EE7-AA3B-B1BB10DF8259/Documents/img2017-03-23 17:39:24.jpg
and obviously I have checked that this file exists and is valid image. It always ends up telling me "loading image file error". Anyone have experiences loading local data in Swift 3?
The answer mentioned was using NSData object and probably Swift 2. Current Swift 3 refuses to bridge NSData to Data, that's why I have to use Data.
Loading data from local file you should use "contentsOfFile:" method.
Reference link: https://www.hackingwithswift.com/example-code/strings/how-to-load-a-string-from-a-file-in-your-bundle
So in case of reading data you can use:
Data(contentsOf: <URL>, options: <Data.ReadingOptions>)
Reading a plain text as a String, use:
String(contentsOfFile: <LocalFileDirPath>)
Reading an image from document directory, use:
UIImage(contentsOfFile: <LocalFileDirPath>)
Hope this would be helpful!
I experienced the same issue when trying to retrieve a file that I just downloaded. If you have saved a file from some url like I did, this should work:
let documentDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first
let localUrl = documentDirectory.appendingPathComponent("somefile.txt")
if FileManager.default.fileExists(atPath: localUrl.path){
if let cert = NSData(contentsOfFile: localUrl.path) {
return cert as Data
}
}
Swift 5 version.
func loadFileFromLocalPath(_ localFilePath: String) ->Data? {
return try? Data(contentsOf: URL(fileURLWithPath: localFilePath))
}
I am using NSUserDefaults.standardUserDefaults() to save my JSON String got from WebService to iPhone memory. When I load it to use with my parser function, the processing speed is so slow. I don't want to use RealmIO or any database because that thing doesn't necessary. I would like to ask is there any way faster than NSUserDefaults? Please check my JSON file (I need store more than 20 files like that)
Instead of saving your data to NSUserDefaults, you should save it to a different file, this will be much more efficient.
Here is how you can do it :
// Build file url
let documentsURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).last!
let fileURL = documentsURL.URLByAppendingPathComponent("file_1.json", isDirectory: false)
// Write
let jsonString = "..."
let jsonData = jsonString.dataUsingEncoding(NSUTF8StringEncoding)
do {
try jsonData?.writeToURL(fileURL, options: NSDataWritingOptions())
} catch {
NSLog("Writing file to `\(fileURL)` failed with error : \(error)")
}
// Read
do {
let jsonData = try NSData(contentsOfURL: fileURL, options: NSDataReadingOptions())
let jsonString = String(data: jsonData, encoding: NSUTF8StringEncoding)
} catch {
NSLog("Reading file at url `\(fileURL)` failed with error : \(error)")
}
NSUserDefaults is not a database. If your JSON documents are more than 100 KB altogether store them into separate documents. Note that every time you change any user default, all the user defaults have to be written to a file. If you have 20 JSON documents of 1MB each, that's writing 20MB or more for every user default the you change.
I want to write log file at my extension, and read it at my app.
For this purpose, I'm using shared groups (so both the app and the extension would be able to read from the same file)
I wrote the following code:
Extension:
let fileManager = NSFileManager.defaultManager()
let containerUrl = fileManager.containerURLForSecurityApplicationGroupIdentifier("group.MyCompany.MyProj")
let extensionLogDirectory = containerUrl?.path?.stringByAppendingString("AppExtensionLogs")
let logFileManager = DDLogFileManagerDefault(logsDirectory: extensionLogDirectory)
PacketTunnelProvider.fileLogger = DDFileLogger(logFileManager: logFileManager)
PacketTunnelProvider.fileLogger!.rollingFrequency = 60*60*12
PacketTunnelProvider.fileLogger!.logFileManager.maximumNumberOfLogFiles = 1
DDLog.addLogger(PacketTunnelProvider.fileLogger)
App (just to read the log file):
let fileManager = NSFileManager.defaultManager()
let containerUrl = fileManager.containerURLForSecurityApplicationGroupIdentifier("group.MyCompany.MyProj")
if let extensionLogDirectory = containerUrl?.path?.stringByAppendingString("AppExtensionLogs") {
do {
let directoryContents = try fileManager.contentsOfDirectoryAtPath(extensionLogDirectory)//always fails
for file in directoryContents {
let path = extensionLogDirectory.stringByAppendingString(file)
do {
let fileContents = try NSString(contentsOfFile: path, encoding: NSUTF8StringEncoding)
NSLog("file: \(fileContents)")
}
catch {/* error handling here */
}
}
}
catch {/* error handling here */
NSLog("nope!")
}
But, something now right - it's seems like contentsOfDirectoryAtPath always fails with "no such file" error
What's wrong in this code?
The problem is unrelated to app extensions or CocoaLumberjack.
stringByAppendingString just concatenates strings, so that the path
separator "/" is missing in the generated directory name.
There was a dedicated method stringByAppendingPathComponent, which however
has been deprecated in Objective-C and is no longer available in Swift.
You should operate on the URL by using URLByAppendingPathComponent
instead:
let extensionLogDirectory = containerUrl?.URLByAppendingPathComponent("AppExtensionLogs").path
I need to get the data from the url it works for other url like udemy but returns nil for url="http://www.google.com/finance/converter?a=1&from=USD&to=INR"
how to solve this issue. i have added app transport security too..
screen
let url = NSURL(string: "https://www.udemy.com/the-complete-ios-9-developer-course/")!
let task = NSURLSession.sharedSession().dataTaskWithURL(url) { (data, response, error) -> Void in
if let url_content = data{
let webcontent = NSString(data: url_content, encoding: NSUTF8StringEncoding)
print(webcontent)
}
}
task.resume()
This is a text encoding problem. The webpage at http://www.google.com/finance/converter?a=1&from=USD&to=INR is not encoded with UTF-8 but with ISO-8859-1.
In this case, you have to use NSISOLatin1StringEncoding instead of NSUTF8StringEncoding for NSString:
let webcontent = NSString(data: url_content, encoding: NSISOLatin1StringEncoding)
You can check the "error" variable to see if you have an error returned by the call. Most probably you have an error accessing that url.
Note that I tried the code and I could get data.