I currently driving crazy cause i can't find my mistake.
I try to pass some information over to my WatchKit App, but this does not work for me.
Both are in the same group
Then i start with the Watch with
NSUserDefaults(suiteName: "group.WatchDate")
NSUserDefaults.standardUserDefaults().setObject("1", forKey: "TEST")
NSUserDefaults.standardUserDefaults().synchronize()
after launch the app once on the watch i switch over to the "phone app" and let it println() the stored value
NSUserDefaults(suiteName: "group.WatchDate")
println("Saved Informations:")
println(NSUserDefaults.standardUserDefaults().objectForKey("TEST"))
The output always is "nil"
I tried the same passing information the other way, also with no success.
But if i simply println() the stored value on the same "device" it works.
Any idea what i m doing wrong?
zisoft has the right point, but to my belief, my code is the safer and cleaner (more readable) way to do it. I´m also taking into consideration, that naming your App Group without using reverse-DNS-style is not considered best practice.
Set data:
import Foundation
if let sharedDefaults = NSUserDefaults(suiteName: "group.com.mycompany.WatchDate") {
sharedDefaults.setObject("1", forKey: "TEST")
sharedDefaults.synchronize()
}
Read data:
import Foundation
if let sharedDefaults = NSUserDefaults(suiteName: "group.com.mycompany.WatchDate") {
if let sharedString = sharedDefaults.objectForKey("TEST") as? String {
println(sharedString)
}
}
NSUserDefaults(suiteName) already returns a NSUserDefaults object, so you must not call standardUserDefaults() again on it. Try it this way:
let sharedDefaults = NSUserDefaults(suiteName: "group.WatchDate")
sharedDefaults?.setObject("1", forKey: "TEST")
sharedDefaults?.synchronize()
on the other side:
let sharedDefaults = NSUserDefaults(suiteName: "group.WatchDate")
let s = sharedDefaults?.objectForKey("TEST") as! String
println(s)
Related
its not hard to get a specified application by name
NSWorkspace.shared.runningApplications.filter{$0.localizedName == "Safari"}.first
but how to get the first window of this application, and perform miniaturize with this window?
something similar with this
let app = NSWorkspace.shared.runningApplications.filter{$0.localizedName == "Safari"}.first
app.frontmostWindow.miniaturize()
You can do this using the ScriptingBridge
import ScriptingBridge
let safari = SBApplication(bundleIdentifier: "com.apple.Safari")
let windowClass = appleEvent(keyword: "cwin")
let miniaturized = appleEvent(keyword: "pmnd")
let windows = safari?.elementArray(withCode: windowClass)
let frontMostWindow = (windows?.firstObject as? SBObject)?.get() as? SBObject
frontMostWindow?.property(withCode: miniaturized).setTo(true)
func appleEvent(keyword: StaticString) -> AEKeyword {
keyword
.utf8Start
.withMemoryRebound(to: DescType.self, capacity: 1, \.pointee)
.bigEndian
}
To be able to run this code you will need a code signed app with the com.apple.security.automation.apple-events entitlement set to true (which allows posting of AppleEvents to other applications)
What I want to do:
I want to get an array from UserDefaults that I saved beforehand and append a custom object to it. Afterwards I want to encode it as a Data-type again and set this as the UserDefaults Key again.
My problem:
The encoding part is what is not working as intended for me.
It says: -[__SwiftValue encodeWithCoder:]: unrecognized selector sent to instance 0x60000011a540
But I do not know how to fix this.
Below is my code for more context:
do {
let decoded = defaults.object(forKey: "ExArray") as! Data
var exo = try NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(decoded) as! [Exerc]
exo.append(datas[indexPath.row])
let enco = try NSKeyedArchiver.archivedData(withRootObject: exo, requiringSecureCoding: false) <- Here is the error
defaults.set(enco, forKey: "ExArray")
} catch {
print("Error encoding custom object NOSEARCHO")
}
This is how Exerc looks:
struct Exerc: Codable {
var title: String
var exID: String
}
Seems like you are not using the archiver features, so why don't you just use the codable?
do {
let key = "ExArray"
let decoded = defaults.data(forKey: key)!
var exo = try JSONDecoder().decode([Exerc].self, from: decoded)
exo.append(datas[indexPath.row])
let enco = try JSONEncoder().encode(exo)
defaults.set(enco, forKey: key)
} catch {
print("Error encoding/decoding custom object NOSEARCHO", error)
}
It just a simple refactored MVP of the original code, but you can even work a bit on this and make it human readable right in the plist file!
I have 2 functions where one basically retrieves string in User Defaults and another writes the string in User Defaults. I'm not able to understand that should I do the unit test or no? and I'm pretty new to the concept for Unit testing.
I scoured the internet for testing user defaults but I was advised to mock the test in the end.
My question is If there is a way to test User Defaults what is the best way to do it?
Constants and Structs
let defaults = UserDefaults.standard
let defaultinformation = "ABCDEFG"
struct Keys {
static let Information = "Information"
}
Function where saves Information
func SetDefaultInformation() {
defaults.set(defaultinformation, forKey: Keys.Information)
}
Function where retrieves Information
func checkForInformation() -> String {
let Information = defaults.value(forKey: Keys.Information) as? String ?? ""
return Information
}
Thanks in Advance
should I do the unit test or no
No. You know what UserDefaults does and you know how it works and that it works. It is ridiculous to test Apple's code. Testing defaults.set is just as silly; you know exactly what it does and you know that it will do it.
What you want to test is your code: not your retrieval from UserDefaults per se, but your response to that retrieval. Give yourself methods such that you can see what you do when information is a String and what you do when information is nil. As you've been told, a trivial mock can supply the back end, playing the part of UserDefaults and giving back different sorts of result. Just don't let your tests involve the real UserDefaults.
class ViewModel {
func saveUserName(name: String, userDefaults: UserDefaults = UserDefaults.standard) {
userDefaults.set(name, forKey: "username")
}
}
class MockUserDefault: UserDefaults {
var persistedUserName: String? = nil
var persistenceKey: String? = nil
override func set(_ value: Any?, forKey defaultName: String) {
persistedUserName = value as? String
persistenceKey = defaultName
}
}
func testSavingUserName() {
let viewModel = ViewModel()
let mockUserDefaults = MockUserDefault()
viewModel.saveUserName(name: "Oliver", userDefaults: mockUserDefaults)
XCTAssertEqual("Oliver", mockUserDefaults.persistedUserName)
XCTAssertEqual("username", mockUserDefaults.persistenceKey)
}
I am looking at the docs for
CFStringGetCString
and AXUIElementCopyAttributeValue.
CFStringGetCString takes the param buffer: UnsafeMutablePointer<Int8>!
AXUIElementCopyAttributeValue takes the param value: UnsafeMutablePointer<CFTypeRef?>
For the latter, I can do a call like this:
var value: CFTypeRef?
let err = AXUIElementCopyAttributeValue(element, attribute as CFString, &value);
This satisfies the doc asking for an UnsafeMutablePointer of type CFTypeRef.
However I can't get the same logic to apply by doing
let buffer: Int8!
CFStringGetCString(attribute as! CFString, &buffer, 2048, CFStringBuiltInEncodings.UTF8.rawValue)
I also tried
let buffer: Int8?
CFStringGetCString(attribute as! CFString, &buffer!, 2048, CFStringBuiltInEncodings.UTF8.rawValue)
Either way, it complains about using buffer before it's initialized, even though it never complained about value in the working method with similar param requirements.
All the working examples I've seen for CFStringGetCString are using objective-c like syntax with *. Not sure what the proper swift way is here.
I also tried this way to get the value I wanted:
let app = AXUIElementCreateSystemWide();
var valueString = "";
var value: CFTypeRef?
// An exception on execution happens here when passing app
// Passing in the element I clicked instead of app
// yields error -25205 (attributeunsupported)
let err = AXUIElementCopyAttributeValue(app, "AXFocusedApplication" as CFString, &value);
if (err == AXError.success) {
valueString = value! as! NSString as String;
} else {
print("ERROR!");
print(err.rawValue);
}
return valueString;
Why are you torturing yourself with CFStringGetCString? If you have a CFString in Swift, you can cast it to a String and get a C string from that:
let cString: [Int8] = (cfString as String).cString(using: .utf8)!
Note also that the value of the kAXFocusedApplicationAttribute is not a CFString. It is an AXUIElement.
Here's my playground test:
import Foundation
import CoreFoundation
let axSystem = AXUIElementCreateSystemWide()
var cfValue: CFTypeRef?
AXUIElementCopyAttributeValue(axSystem, kAXFocusedApplicationAttribute as CFString, &cfValue)
if let cfValue = cfValue, CFGetTypeID(cfValue) == AXUIElementGetTypeID() {
let axFocusedApplication = cfValue
print(axFocusedApplication)
}
The first time I executed this playground, I got a system dialog box telling me that I need to give Xcode permission to control my computer. I went to System Preferences > Security & Privacy > Privacy > Accessibility, found Xcode at the bottom of the list, and turned on its checkbox.
Here's the output of the playground:
<AXUIElement Application 0x7fb2d60001c0> {pid=30253}
I assume you're on macOS since the AXUI API is only available on macOS. If you just want the name of the front application as a string, you can do this:
if let frontAppName = NSWorkspace.shared.frontmostApplication?.localizedName {
print(frontAppName)
}
API gives me back a variable that has type Any. It looks like this when I print it.
{
"sender" : "Kira",
"created" : "08.05.2018",
"text" : "Cncncm"
}
I tried to use SwiftyJSON to cast it like this let mydata = JSON(data) but it failes. I tried to use Swift 4 decoding technique but that failed as well. I tried to do this let myData = data as? Dictionary<String, String> but it fails again.
I am clueless what to do here. Any tips or solutions?
Finally a chance to demonstrate one of the Codable protocols hidden gems. Please run the following in a Playground:
import Cocoa
let jsonData = """
{
"sender" : "Kira",
"created" : "08.05.2018",
"text" : "Cncncm"
}
""".data(using: .utf8)!
struct SenderText: Codable {
let sender: String
let created: Date
let text: String
}
let dayFormatter = DateFormatter()
dayFormatter.dateFormat = "dd.MM.yyyy"
let date = dayFormatter.date(from:"08.05.2018")
let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .formatted(dayFormatter)
do {
let sendText = try decoder.decode(SenderText.self, from: jsonData)
print(sendText)
} catch {
print(error)
}
The sheer elegance of how easy it is to define such an intricate parser mapping a messy JSON-string to your favourite struct will hardly ever stop to amaze me. No matter how weird your date format looks, it is hardly more than 3 lines away from being parsed during the process.
There is something in regard to casting you should note though: In Swift, as in most object oriented languages, you can only cast something to something else if (and only if) it already is something else in the first place (but that knowledge has been lost somewhere). Since your String is "just" a String (in disguise of an Any maybe) you won't be able to cast it to anything else. However the Codable protocol provides you with a terrific means to decode from the Strings Data with astonishing ease. This process should not be mistaken as a cast, even if it looks largely the same. It is the creation and initialisation of another, more fittingly structured object from a simple piece of Data that you are likely to have gotten from your average web service of choice.
Great so far, at least in my book.
You can parse it like this as it's a json string
let trd = yourVar as? String
if let data = trd?.data(using: String.Encoding.utf8) {
do {
var content = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as! [String:String]
print(content)
}
catch let error as NSError {
print(error)
}
}