How can I get the console logs with all the print/Nslog contents and display it on a textview? Thank you very much for your answer.
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"How can I get the console logs" You can't. If you could, there would be apps that display the console logs, and there are no such apps nowadays.matt– matt2016-08-10 16:19:20 +00:00Commented Aug 10, 2016 at 16:19
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3 Answers
To accomplish this I modified the OutputListener Class described in this article titled "Intercepting stdout in Swift" by phatblat:
func captureStandardOutputAndRouteToTextView() {
outputPipe = Pipe()
// Intercept STDOUT with outputPipe
dup2(self.outputPipe.fileHandleForWriting.fileDescriptor, FileHandle.standardOutput.fileDescriptor)
outputPipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
NotificationCenter.default.addObserver(forName: NSNotification.Name.NSFileHandleDataAvailable, object: outputPipe.fileHandleForReading , queue: nil) {
notification in
let output = self.outputPipe.fileHandleForReading.availableData
let outputString = String(data: output, encoding: String.Encoding.utf8) ?? ""
DispatchQueue.main.async(execute: {
let previousOutput = self.outputText.string
let nextOutput = previousOutput + outputString
self.outputText.string = nextOutput
let range = NSRange(location:nextOutput.count,length:0)
self.outputText.scrollRangeToVisible(range)
})
self.outputPipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
}
}
}
Comments
If you do not want to change existing code, you can;
1 - redirect the output of print to a known file. see instructions here; How to redirect the nslog output to file instead of console ( answer 4, redirecting)
2 - monitor the file for changes and read them in to display in your textView.
1 Comment
user3205472
HI I have manage to implement this code in swift but my other NSLogs or in swift is print is not registering to my text file
You can totally do that! Check this out: https://stackoverflow.com/a/13303081/1491675
Basically you create an output file and pipe the stderr output to that file. Then to display in your textView, just read the file and populate your textView.
