How to add custom view groups to Anko DSL?

Question

Anko docs tell us how to add custom views to DSL. But if my custom view is a view group, problems arise.

class MyFrameLayout(context: Context) : FrameLayout(context)

fun ViewManager.myFrameLayout(init: MyFrameLayout.() -> Unit = {}) = ankoView({ MyFrameLayout(it) }, init)

class MyUI : AnkoComponent<Fragment> {
    override fun createView(ui: AnkoContext<Fragment>) = with(ui) {

        myFrameLayout {
            textView("hello").lparams { // error: Unresolved reference: lparams
                bottomMargin = dip(40)
            }
        }
    }
}

but if I change myFrameLayout invocation to frameLayout it works OK. So what's the proper way to make view groups be used with Anko DSL?

Answer 1

Actually you just have to extend anko and declare your customview then use it in the DSL normally:

public inline fun ViewManager.customView() = customView {}
public inline fun ViewManager.customView(init: CustomView.() -> Unit) = ankoView({ CustomView(it) }, init)

Then use it in the DSL normally

frameLayout {
    customView()
}