The empty space while scrolling in Cordova/Ionic/iOS

I have created the Ionic-Cordova application (iOS App).

At first, I removed the keyboard accessory bar.

The accessory bar has gone well. (picture below)

enter image description here

...But then when I scroll down to the bottom it shows an empty space (white space top of keyboard)

enter image description here

Can anyone figure out how to solve this one?

I'm not sure weather it's Cordova/iOS or Ionic/css issue, I tried to solve all of them but nothing works.

Try This:

-(void)textFieldDidBeginEditing:(UITextField *)textField { 
//Give your specifications here while editing
scrollview.frame = CGRectMake(0,0,320,285);
 //If you are using tableview,give the constraints for tableview
}
-(void)textFieldDidEndEditing:(UITextField *)textField {
//Give your specifications here after editing completed
scrollview.frame = CGRectMake(0,0,320,586);
}