xcode debug area
hi,
i am a new beginner in iOS development. i am trying to learn someone code to build an app.
here is the screenshot of my problem : https://i.stack.imgur.com/4QX5P.png
i am trying to print("helloo") and print("your requestID is : ") but it doesnt appear in my debug area, that code is written in my ViewController.swift file
the debug area just print out the networking result from VenuesTableViewController.swift file (from another swift file)
what went wrong in here ? thanks in advance :)
Based on your code, it's very strange that your printing "helloo" doesn't appear on your debug area since it is declared on the viewDidLoad of your ViewController. Did you really use this ViewController ?
The second print "Your request id..." can or not be print based on your previous guard statements : guard let dictionnarayJSON...guard let meta...guard let requestID. A guard statement allows you to control the flow of your code. If what you test is correct it can continue to proceed your code. If not you put return so the flow of your code is stopped.
So, if one of your 3 guard statements fails, you can't reach your printing statement print(Your requet id...)
I recommend you to see Apple documentation : Control Flow
Related
I am implementing a NEPacketTunnelProvider and loading it from my view controller using:
var vpnManager: NETunnelProviderManager = NETunnelProviderManager()
...
let providerProtocol = NETunnelProviderProtocol()
providerProtocol.providerBundleIdentifier = "AA.BB.CC"
providerProtocol.serverAddress = "<something>"
...
self.vpnManager.localizedDescription = "My app"
self.vpnManager.protocolConfiguration = providerProtocol
self.vpnManager.isEnabled = true
self.vpnManager.connection.startVPNTunnel()
Parts marked with "..." seemed irrelevant.
My understanding (although it's really not clear in the documentation) is that when I do this, and I have a target that was created as type "NetworkExtension" with BundleId AA.BB.CC, that the extension would be loaded and executed properly. So, my understanding is that startTunnel (from NEPacketTunnelProvider) will implicitly be called from the code block above.
I put a NSLog("STARTING TUNNEL!!!!!") right at the top of the startTunnel method, but am not sure where to see that. So far, I have viewed the logs in:
Console
Window > Devices and simulators > View device logs
None of these appear to show the logs from within the extension. The problem is that the extension seems to crash before I can attach to the running process, so I have the feeling I'm just "missing" that log because I can't attach quickly enough.
Short question
How can I attach to a running network extension quickly enough so that I don't miss an NSLog that is run immediately?
The logs from Network extensions do not go to Xcode console. to see the logs from Network extension you have to follow the bellow steps.
Open the console application.
Select your iOS device running the network extension you will see all the logs from your device.
Filter the logs by Network extension target name now you will see the logs only from your network extension.
How can I attach to a running network extension quickly enough?
What I have been doing to solve this problem was, put the thread on sleep right before log statement.
sleep(60)
It will give you enough time to attach the Network Extension process for debug.
Below is my recorded XCTest
let app = XCUIApplication()
let tablesQuery = app.tables
tablesQuery.staticTexts["Video"].tap()
tablesQuery.staticTexts["\tWindowed"].tap()
app.buttons["Launch"].tap()
app.buttons["Popout Video"].tap()
app.children(matching: .window).element(boundBy: 0).children(matching: .other).element(boundBy: 1).tap()
When I am trying to run the test the last part that is:
app.children(matching: .window).element(boundBy: 0).children(matching: .other).element(boundBy: 1).tap()
is not accessible. It does not throw any error but the last line of code is not executed.
I have tried solving the issue by referring to the following stackoverflow question :
Xcode UI Tests can't find views that are added programatically
Also , I have referred to the following Apple Documentations: https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/iPhoneAccessibility/Making_Application_Accessible/Making_Application_Accessible.html#//apple_ref/doc/uid/TP40008785-CH102-SW2
https://developer.apple.com/reference/uikit/uiview
But all these doesn't seem to solve the issue. Any help will be greatly appreciated.
The line in question is very brittle. It's possible that your app's views are not always available in the same order every time the app launches, depending on race conditions, so what was recorded in your recording session does not necessarily work for all launches of the app. You'll probably find that the code is actually running, but isn't tapping the element you expected.
To make your code less brittle, add an accessibility identifier to the UIView in your app code, and use the otherElements query to find the UIView.
// app code
let view: UIView!
view.accessibilityIdentifier = "myAccessibilityIdentifier"
// UI test code
app.otherElements["myAccessibilityIdentifier"].tap()
I want to read inputs from debug console, to create commands that will be read by the app in order to get more control in my app. For example I want to send commands like:
addCoins 200
and my app should read this line and parse it to call the function:
addCoins(amount: 200)
In the didViewLoad I tried to create an async function and inside read console to know if the user has written some commands but it is not working.
I am not sure if it is possible at all.
My code inside the viewDidLoad is:
let queue = DispatchQueue.global()
queue.async {
let command = readLine(strippingNewline: true)
if command != nil {
//parse command to do something
print("\(command)!")
}
}
I want to read the commands as following:
Your application can not read your console input if it's an iOS app. You can certainly use debugging features to read information during runtime.
You might not need this but, in the lldb debugger, you can set up breakpoints and use basic commands to read and modify some information at runtime. Apple has a comprehensive tutorial on Xcode debugging. Debugger You can also look at lldb tutorial here. lldb tutorial
I would like to be able to redirect my logging statements to a file so that I can retrieve them when my app runs standalone (i.e. is not attached to Xcode). I have discovered (thank you Stackoverflow) that freopen can be used to accomplish this.
If I create a new Xcode project and add the code to redirect stderr then everything works as expected.
However, when I add the redirection code to my existing, bluetooth project I am having trouble. The file is being created and I can retrieve it using iTunes or Xcode's Devices window, but it is of size 0. If I explicitly close the file then the text that I wrote actually makes it into the file. It is as though iOS is not flushing the file when the app is terminated. I suspect that the trouble stems from the fact that I have enabled background processing. Can anyone help me to understand this?
Here is my code:
let pathes = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true);
let filePath = NSURL(fileURLWithPath: pathes[0]).URLByAppendingPathComponent("Test.log")
freopen(filePath.path!, "a", stderr);
fputs("Hello, Samantha!\r\n", stderr);
struct StderrOutputStream: OutputStreamType {
static let stream = StderrOutputStream()
func write(string: String) {fputs(string, stderr)}
}
var errStream = StderrOutputStream.stream
print("Hello, Robert", toStream: &errStream)
fclose(stderr) // Without this the text does not make it into the file.
I'd leave this as a comment, but have you looked into NSFileHandle? It sounds like you just need a way to append data to the end of a text file, correct?
Once you have a handle with something like NSFileHandle(forWritingToURL:), you can use .seekToEndOfFile() and .writeData(_:). As a side note, you'll need to convert your String to Data before writing it.
Admittedly, this will probably end up being more lines of code, and you'll almost certainly need to take threading into consideration.
I am currently exploring the new UITest library in Xcode, and I want to test if the keyboard that pops up upon clicking inside a UITextView has the proper type (in this case it should be .PhonePad).
I don't think this is feasible with the default XCUIElement and XCUIElementAttributes (which are still a bit blurry to me concerning their actual meaning), and I don't really understand how and what I am supposed to extend in order to be able to test this.
Any help would be greatly appreciated ! :)
Below code I am using for testing the Phone number and password validation check.
let app = XCUIApplication()
let tablesQuery = app.tables
tablesQuery.cells.containingType(.StaticText, identifier:"Login Using").buttons["Icon mail"].tap()
tablesQuery.textFields["Phone Number"].tap()
tablesQuery.cells.containingType(.SecureTextField, identifier:"Password").childrenMatchingType(.TextField).element.typeText("ooo")
tablesQuery.staticTexts["Login Using"].swipeUp()
tablesQuery.secureTextFields["Password"].tap()
tablesQuery.cells.containingType(.Button, identifier:"Login").childrenMatchingType(.SecureTextField).element.typeText("eeee")
tablesQuery.buttons["Login"].tap()
app.alerts["Error"].collectionViews.buttons["OK"].pressForDuration(1.1);
I hope this will be useful for you.