in android pie version i am not facing this type of problem

a sample code given:

yo can use native audio plugin to play sound

Example:
Step 1 : install NativeAudio plugin
to see more
https://ionicframework.com/docs/native/native-audio

Import in app.module.ts and page.ts where you want to play

import { NativeAudio } from ‘@ionic-native/native-audio’;

Create instace of nativeAudio plugin

private nativeAudio: NativeAudio

put code to play sound

this.nativeAudio.preloadSimple(‘uniqueId1’, ‘assets/imgs/notifications.wav’).then( function(msg){
objElement.nativeAudio.play(‘uniqueId1’).then( function(msg){
}, function(msg){
});

}, function(msg){
});