How do i use non static method in kotlin?

Question

I have one class that extends BroadcastReceiver. So when a message arrives that method is called. Now in that method I am calling another class's method to set the text in an EditText. But since I am using kotlin I need to use a static method in a companion object. So how do I call setText for my EditText in that method or somewhere else?

My BroadcastReceiver Class :

class SMS : BroadcastReceiver() {

    val OTP_REGEX = "[0-9]{1,6}"

    override fun onReceive(context: Context, intent: Intent) {
        Log.e("onReceive", "==->$intent")

        val bundle = intent.extras
        try {
            if (bundle != null) {
                Log.e("onReceive", "==->$bundle")
                val pdusObj = bundle.get("pdus") as Array<Any>
                for (i in pdusObj.indices) {
                    val currentMessage = SmsMessage.createFromPdu(pdusObj[i] as ByteArray)
                    val phoneNumber = currentMessage.displayOriginatingAddress
                    val senderNum = phoneNumber
                    val message = currentMessage.displayMessageBody

                    Log.e("getMessage", "===->$message")

                    try {
                        VerifyOTPActivity.ReceievdMsg(message);
                    } catch (e: Exception) {
                        e.printStackTrace()
                    }
                }
            }
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }

} 

The class where I need to set that message in edit text.

class VerifyOTPActivity : AppCompatActivity()  {

    companion object {

        @JvmStatic
        fun ReceievdMsg(message: String) {
            var otp = ""
            val OTP_NUMBERS = "[0-9]{1,6}"
            val pattern = Pattern.compile(OTP_NUMBERS)
            val matcher = pattern.matcher(message)

            while (matcher.find()) {
                otp = matcher.group()
            }

            try {
               // edt.setText(otp) // Edit text
            } catch (e: Exception) {

            }
        }

    }

    var mobileNo: String = ""

    var preference: AppPreference? = null
    lateinit var adminAPI: AdminAPI
    lateinit var customDialog: CustomDialog

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

        preference = Utils.getAppPreference(applicationContext)
        adminAPI = ServiceGenerator.getAPIClass()
        customDialog = CustomDialog(this)
        customDialog.setCancelable(false)

        val intent: Intent = intent

        mobileNo = intent.getStringExtra("mobileNo")

        workonIds()
        setupToolBar()
    }

    private fun setupToolBar() {
        txt_toolbar_title.gravity = Gravity.CENTER
    }

    private fun workonIds() {
        txt_mobile_no.setText(mobileNo)

        txt_mobile_no.setOnClickListener{
            onBackPressed()
        }

        layout_next.setOnClickListener {
            val getOTP = edt_otp.text.toString().trim()
            val getMobileNo = txt_mobile_no.text.toString().trim()

            if (getOTP.isEmpty()) {
                C.showToast(applicationContext, resources.getString(R.string.emptyotp))
            } else if (getOTP.length < 6) {
                C.showToast(applicationContext, resources.getString(R.string.validotp))
            } else {
                verifyOTP(getMobileNo , getOTP)
            }
        }
    }

    private fun verifyOTP(mobileNo: String, otp: String) {
        customDialog.show()
        val sendOTP : Call<AppModel> = adminAPI.VerifyOTP(mobileNo , otp)
        sendOTP.enqueue(object : Callback<AppModel> {
            override fun onFailure(call: Call<AppModel>?, t: Throwable?) {
                customDialog.dismiss()
                C.errorToast(applicationContext , t)
            }

            override fun onResponse(call: Call<AppModel>?, response: Response<AppModel>?) {
                customDialog.dismiss()
                val appModel : AppModel = response!!.body()!!
                if (appModel != null) {
                    if (appModel.isStatus) {
                        val intent = Intent(applicationContext, UserRegistrationActivity::class.java)
                        intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP
                        preference!!.verify = true
                        preference!!.mobileNumber = mobileNo
                        intent.putExtra("mobileNo", mobileNo)
                        startActivity(intent)
                    } else {
                        C.showToast(applicationContext , appModel.message)
                    }
                } else {
                    C.defaultError(applicationContext)
                }
            }
        })
    }

}

How do I set that message in my EditText?

Answer 1

You can setup an event bus that is a singleton. That way from your BroadcastReceiver you can send events to the bus and from your Activity/Fragment/Whatever you can subscribe to those events and react accordingly

You can check some libraries like EventBus or Otto although I strongly recommend RxJava. It's a bit more complicated but way more powerful

Answer 2

You can create inner class in VerifyOTPActivity and extend it with BroadcastReceiver. Than inside your onReceive() you will have access to your VerifyOTPActivity instance and will be able to call findViewById() to get your TextView instance to write your text there. Of course you should call registerReceiver() inside onCreate() of your VerifyOTPActivity and unregisterReceiver() inside onDestroy()

In other words just make your SMS braodcast receiver inner to VerifyOTPActivity and bind its registration to the activity lifecycle