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npm install --save @ionic-native/native-storage

import { NativeStorage } from '@ionic-native/native-storage';

constructor(private nativeStorage: NativeStorage) { }

...

this.nativeStorage.setItem('myitem', {property: 'value', anotherProperty: 'anotherValue'})
  .then(
    () => console.log('Stored item!'),
    error => console.error('Error storing item', error)
  );

this.nativeStorage.getItem('myitem')
  .then(
    data => console.log(data),
    error => console.error(error)
  );
  
  
  
  	
For ionic v2 we can use native storage

Add plugins using cmd

$ ionic cordova plugin add cordova-plugin-nativestorage
$ npm install --save @ionic-native/native-storage
In appmodule.ts

import { NativeStorage } from '@ionic-native/native-storage';
@NgModule({
    declarations: [
    // pages to be added         
    ],
    imports: [
        BrowserModule,
        NgCalendarModule,
        IonicModule.forRoot(MyApp)
    ],
    bootstrap: [IonicApp],
    entryComponents: [
       //pages to be added

    ],
    providers: [
        SplashScreen,
        NativeStorage,
        { provide: ErrorHandler, useClass: IonicErrorHandler }
    ]
})
export class AppModule { }
To set and get values import { NativeStorage } from '@ionic-native/native-storage';

var array=[];
this.nativeStorage.setItem("setting value", array);
this.nativeStorage.getItem("setting value"),then(
 data => {
    console.log("stored value", data)
})
Hope this helps
  
  

npm install --save @ionic-native/native-storage