Explain renderScrollview in code

Can any one explain me why there is separate code for android and ios for rendering scrollview in code. Is there any special purpose to do that??

can't we use for android as well instead of ?? will it create any issue in android?

src/index.js

 renderScrollView = pages => {
    if (Platform.OS === 'ios') {
      return (
        <ScrollView ref='scrollView'
          {...this.props}
          {...this.scrollViewPropOverrides()}
          contentContainerStyle={[styles.wrapperIOS, this.props.style]}
          contentOffset={this.state.offset}
          onScrollBeginDrag={this.onScrollBegin}
          onMomentumScrollEnd={this.onScrollEnd}
          onScrollEndDrag={this.onScrollEndDrag}>
          {pages}
        </ScrollView>
       )
    }
    return (
      <ViewPagerAndroid ref='scrollView'
        {...this.props}
        initialPage={this.props.loop ? this.state.index + 1 : this.state.index}
        onPageSelected={this.onScrollEnd}
        key={pages.length}
        style={[styles.wrapperAndroid, this.props.style]}>
        {pages}
      </ViewPagerAndroid>
    )
  }

Start in src/index.js at renderScrollView and compare the iOS ScrollView branch with the Android ViewPagerAndroid branch. Trace the related props and scroll callbacks shown there, then document the platform-specific rationale and whether using ScrollView on Android is supported; done means the explanation answers the issue's questions clearly.