如何以编程方式创建 TabLayout class 的实例？

Question

I want to create an instance of the TabLayout class programmatically for instrumentation testing purposes. Sadly, the TabLayout constructor is throwing an IllegalArgumentException with the following message:

The style on this component requires your app theme to be Theme.AppCompat (or a descendant).

This is what I've tried:

val context = InstrumentationRegistry.getInstrumentation().targetContext
val tabLayout = TabLayout(context)

I've tried TabLayout(context, null, R.style.Theme_AppCompat) as well but no luck.

What do I need to do to create an instance of the TabLayout class when the theme of my context is not Theme.AppCompat or a descendant of Theme.AppCompat ?

Answer 1

What worked for me was to use ContextThemeWrapper as follows:

val context = InstrumentationRegistry.getInstrumentation().targetContext
val tabLayout = TabLayout(ContextThemeWrapper(context, R.style.Theme_AppCompat))