React Native Script TelephonyManager not working - react-native

Question

Here is my NativScript code for android
package com.chetti; // replace com.your-app-name with your app’s name
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import java.util.Map;
import java.util.HashMap;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.app.Activity;
public class CalendarModule extends ReactContextBaseJavaModule {
CalendarModule(ReactApplicationContext context) {
super(context);
}
#Override
public String getName() {
return "CalendarModule";
}
#ReactMethod
public String createCalendarEvent() {
// I am not sure about how to get TelephonyManager instance!
TelephonyManager manager=(TelephonyManager)getActivity().getSystemService(Context.TELEPHONY_SERVICE);
String phoneNumber1 = manager.getLine1Number();
return phoneNumber1;
}
}
Error throwing are follows->
error: cannot find symbol
TelephonyManager manager=(TelephonyManager)getActivity().getSystemService(Context.TELEPHONY_SERVICE);
^
symbol: method getActivity()
location: class CalendarModule
My requirement is to get the mobile numbers using Native Module for android?.
My specs:
1, React Native 0.68.0
2, node 17

Answer 1

Just putting here a function so that you can get an idea:
#Override
public void onReceive(final Context context, final Intent intent) {
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
telephony.listen(new PhoneStateListener() {
#Override
public void onCallStateChanged(int state, String phoneNumber) {
Log.d("RINGER_IID", phoneNumber);
onCustomCallStateChanged(context, state, phoneNumber);
}
}, PhoneStateListener.LISTEN_CALL_STATE);
}
https://developer.android.com/reference/android/telephony/TelephonyManager
Got through this. Hope this helps.