Support for custom backButton

[thebergamo]

Version

Tell us which versions you are using:

• react-native-router-flux v4.0.0-beta.21 (v3 is not supported)

Expected behaviour

Using a custom component for the backButton in NavBar instead of just an image

Actual behaviour

You can't register a custom component to backbutton just images

[hungdev]

this is props in <Scene. read more API docs.
back backButtonImage={Images.arrowLeft} leftButtonIconStyle={styles.backButtonStyle}

[thebergamo]

@hungdev the issue is related to the NavBar (In this case, NavBar is a shortcut for some configurations in Scene).
We can set images and styles for the back button, but if I want to add more behaviors I can't just using a fully custom "backButton"

[hungdev]

but if i want to add more behaviors you can use custom navbar component.

[mcabs3]

try renderLeftButton

[thebergamo]

@mcabs3 you can close this issue at this moment. I back using the v3. The v4 demands a lot of refactoring that unfortunately we don't have time to do. :(

[mcabs3]

@thebergamo i'm sorry to hear that. if you have more questions i'll do my best to help.