CODEWITHSUNDEEP
androidandroid-fragmentskotlin
Tomáš Benčo
Tomáš Benčo

Reputation: 23

Kotlin fragment type mismatch

I am making Master/Detail flow activity in Kotlin. I have mismatch problem with fragments becuase in one activity I need android.support.v4.app.Fragment and in other android.app.Fragment. I implemented my own detail fragment and inherited from android.support.v4.app.Fragment to fix mismatch in supportFragmnet transaction from ListActivity

if (mTwoPane) {
    val fragment = GraphDetailFragment().apply {
    arguments = Bundle().apply {
        putString(GraphDetailFragment.ARG_ITEM_ID, item.id)
    }
}
supportFragmentManager
        .beginTransaction()
        .replace(R.id.graph_detail_container, fragment)
        .commit()
}

But then I have mismatch in fragmentManager from DetailActivity

val fragment = GraphDetailFragment().apply {
            arguments = Bundle().apply {
                putString(GraphDetailFragment.ARG_ITEM_ID,
                        intent.getStringExtra(GraphDetailFragment.ARG_ITEM_ID))
            }
        }

fragmentManager.beginTransaction()
        .add(R.id.graph_detail_container, fragment)
        .commit()

and console throws :

None of the following functions can be called with the arguments supplied: public abstract fun add(p0: Fragment!, p1: String!): FragmentTransaction! defined in android.app.FragmentTransaction public abstract fun add(p0: Int, p1: Fragment!): FragmentTransaction! defined in android.app.FragmentTransaction

Is there any simple way how to fix this?

Upvotes: 2

Views: 783

Answers (1)

TheWanderer
TheWanderer

Reputation: 17854

Make DetailActivity extend AppCompatActivity, and then use supportFragmentManager in it.

You'll also need to fix your AppTheme in styles.xml. Make sure that the parent attribute points to Theme.AppCompat or Theme.AppCompat.Light.

Upvotes: 3

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