ANR Thread

anrHandler.kt

package com.tomerpacific.anrdetection

import android.os.Handler
import android.os.Looper
import java.lang.Exception

class ANRHandler: Thread() {

    val TIMEOUT: Long = 5000L
    private val handler: Handler = Handler(Looper.getMainLooper())
    private val worker : Runnable = Runnable {  }

    override fun run() {
        while (!isInterrupted) {
            handler.postAtFrontOfQueue(worker)

            try {
                sleep(TIMEOUT)
            } catch (exception: Exception) {
                exception.printStackTrace()
            }

            if (handler.hasMessages(0)) {
                //worker has not finished running so the UI thread is being held
                val stackTrace: Array<StackTraceElement> = currentThread().stackTrace
                var output: String = ""
                for (element in stackTrace) {
                    output += element.className + " " + element.methodName + " " + element.lineNumber
                }

                print(output)
            }
        }
    }
}