Kotlin 的子线程从asstes中读取文件保存到手机本地

   Thread(object : Runnable {
                override fun run() {
                    //读取与写入
                    setScript()
                    val msg = Message.obtain()
                    msg.obj = "信息"
                    //返回主线程
                    myHandler.sendMessage(msg)
                }
            }).start()

    fun setScript(){
        //读取assets中的文件
        var inputStream: InputStream = assets.open("script.pck")
        //保存到手机的路劲
        val appDir = File(fileStr1 + "/asset")
        if (!appDir.exists()) {
            appDir.mkdir()
        }
        val file = File(appDir, "script.pck")
        val fos = FileOutputStream(file)
        var bytes: ByteArray = ByteArray(1024)
        var byteCount: Int = inputStream.read(bytes)
        while (byteCount !== -1) {
            fos.write(bytes, 0, byteCount)
            byteCount = inputStream.read(bytes)
        }
        fos.flush()
        inputStream.close()
        fos.close()
    }