autoSave not working for android device

[ashu171093]

Added onAutoSaveNeeded to save chart after every 5 seconds like below widget.subscribe('onAutoSaveNeeded', () => { widget.saveChartToServer(()=>{ },() => { },{defaultChartName:"ChartLayout"}) });

This is properly work for ios device(chart get save after every 5 second as per required )but not working for android device