ProgressViewOffset for IOS Refresh Control React Native

I have the header that hides on a scroll, So I use ProgressViewOffset to bring out refresh control loader below the header.
It's working fine on Android. But in IOS we have no support for offset. But I ended up using contentInset and contentOffset but I'm not getting it.

          refreshControl: (
        <RefreshControl
          // refreshing
          refreshing={this.props.isloading}
          onRefresh={this.onRefresh}
          progressViewOffset={200}
          />
      ),
      contentInset: {top: 200},
      onMomentumScrollBegin,
      onMomentumScrollEnd,
      onScrollEndDrag,
      ItemSeparatorComponent: this.renderSeparator,
      onScrollEventThrottle: 16,
      automaticallyAdjustContentInsets: false, 
      contentOffset: {x: 0, y: -200},

PS: When I use contentContainerStyle and contentInset, There's a space between refreshcontrol and the content...