repositories {
        ...
        jcenter() // 或者 maven {url 'https://dl.bintray.com/517091/maven'}
        ...
    }

implementation 'com.shuanghui.mobile:scanner:1.2.0'

 if (EasyPermissions.hasPermissions(this, *CAMERA_PERMISSIONS)) {
            CaptureActivity.start(this@MainActivity, SCAN_REQUEST_CODE)
        } else {
            EasyPermissions.requestPermissions(
                    this,
                    "应用需要访问相机权限!",
                    SCAN_REQUEST_CODE,
                    *CAMERA_PERMISSIONS
            )
        }

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if (requestCode == SCAN_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
        val barCode = data?.getStringExtra(Constants.SCAN_BAR_CODE_RESULT)
        if (barCode.isNullOrEmpty()) {
            Toast.makeText(this@MainActivity, "扫描结果为空~", Toast.LENGTH_SHORT).show()
        } else {
            tv_result.text = barCode
        }
    }
}