Get key from button list when pressed in React Native

Question

I am displaying a list of Material Kit buttons (using SectionList) and want to be able to display their key (ie. their index) when they are clicked - however am struggling with the getting it working with an MK button.

Any help would be really appreciated. Thanks a ton!

Button builder with onPress:

AllConnectionsItemButton = MKButton.flatButton()
  .withOnPress( (key) => alert(key))
  .build()

SectionList:

<SectionList
  renderItem={({item, index, section}) => (
  <AllConnectionsItemButton key={index}>
    <Text>{item.name}</Text>
  </AllConnectionsItemButton>
    )}
  renderSectionHeader={({section: {title}}) => (
    <View>
      <Text>{title}</Text>
    </View>
  )}
  sections={this.state.myList}
  keyExtractor={(item, index) => item + index}
/>