override fun onCreate()

in audio_classification/codelab2/android/final/app/src/main/java/com/example/mysoundclassification/MainActivity.kt [37:86]
36 lines of code
4 McCabe index (conditional complexity)

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val REQUEST_RECORD_AUDIO = 1337
        requestPermissions(arrayOf(Manifest.permission.RECORD_AUDIO), REQUEST_RECORD_AUDIO)

        textView = findViewById<TextView>(R.id.output)
        val recorderSpecsTextView = findViewById<TextView>(R.id.textViewAudioRecorderSpecs)

        val classifier = AudioClassifier.createFromFile(this, modelPath)

        val tensor = classifier.createInputTensorAudio()

        val format = classifier.requiredTensorAudioFormat
        val recorderSpecs = "Number Of Channels: ${format.channels}\n" +
                "Sample Rate: ${format.sampleRate}"
        recorderSpecsTextView.text = recorderSpecs

        val record = classifier.createAudioRecord()
        record.startRecording()

        Timer().scheduleAtFixedRate(1, 500) {

            val numberOfSamples = tensor.load(record)
            val output = classifier.classify(tensor)

            // TODO 2: Check if it's a bird sound.
            var filteredModelOutput = output[0].categories.filter {
                it.label.contains("Bird") && it.score > probabilityThreshold
            }

            // TODO 3: given there's a bird sound, which one is it?
            if (filteredModelOutput.isNotEmpty()) {
                Log.i("Yamnet", "bird sound detected!")
                filteredModelOutput = output[1].categories.filter {
                    it.score > probabilityThreshold
                }
            }

            val outputStr =
                filteredModelOutput.sortedBy { -it.score }
                    .joinToString(separator = "\n") { "${it.label} -> ${it.score} " }

            if (outputStr.isNotEmpty())
                runOnUiThread {
                    textView.text = outputStr
                }
        }
    }