Use this to use Android Runtime Permission simply in Kotlin

Android Runtime Permission in Kotlin

package mukesh.call.runtimepermission

//imports below


class MainActivity : AppCompatActivity() {

    private val REQUEST_CODE_ASK_PERMISSIONS = 123

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
          permissionProcess()
    }
    
    fun myMethod(){
    // your main stuff
    }
    
    fun permissionProcess(v: View) {
        if (Build.VERSION.SDK_INT < 23) {
            // do your stuff
            myMethod()
        } else {
            val hasReadContactsPermission = checkSelfPermission(Manifest.permission.READ_CALL_LOG)
            if (hasReadContactsPermission != PackageManager.PERMISSION_GRANTED) {
                requestPermissions(arrayOf(Manifest.permission.READ_CALL_LOG),
                        REQUEST_CODE_ASK_PERMISSIONS)
                return
            }
            // do your stuff
            myMethod()
        }
    }

    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
        when (requestCode) {
            REQUEST_CODE_ASK_PERMISSIONS -> if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Permission Granted, do your stuff
                myMethod()
            } else {
                // Permission Denied
                Toast.makeText(this@MainActivity, "READ_CALL_LOG Denied", Toast.LENGTH_SHORT)
                        .show()
            }
            else -> super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        }
    }
}