Push Notification (https://ionicframework.com/docs/native/push/)
1)Install plugin
a)ionic cordova plugin add phonegap-plugin-push --variable SENDER_ID=XXXXXXXXX(SENDER_ID from FireBase console)
b)npm install --save @ionic-native/push
2)Intialize Push
a)const options: PushOptions = {android: {senderID: 'XXXXXXXXX'},ios: {alert: 'true',badge: true,sound: 'false'},windows: {}};
 
Native Storage (https://ionicframework.com/docs/native/native-storage/)
1)Set storage value
this.storage.set('searchedArea', address);
2)Get storage value
this.storage.get('buyerId').then((val) => {if(val!=null){console.log(val);}else{}});
3)Get multiple values
this.storage.forEach( (value, key, index) => {console.log(key:value);}),
4)Error
a)DataCloneErro
Events (https://ionicframework.com/docs/api/util/Events/)
Events is a publish-subscribe style event system for sending and responding to application-level events across your app.
1)Import Event
import { Events } from 'ionic-angular';
2)Declare in constructor
public events: Events
3)Event publish responding application-level events
events.subscribe('user:created', (user, t