FragmentHost

interface FragmentHost

androidx.leanback.app.BrowseFragment.FragmentHost

Possible set of actions that BrowseFragment exposes to clients. Custom fragments can interact with BrowseFragment using this interface.

Summary

Public methods
abstract Unit	`notifyDataReady(fragmentAdapter: BrowseFragment.MainFragmentAdapter<Fragment!>!)` Fragments mapped to `PageRow` are required to invoke this callback once their data is created for transition, the entrance animation only after receiving this callback.
abstract Unit	`showTitleView(show: Boolean)` Show or hide title view in `BrowseFragment` for fragments mapped to `PageRow`.
abstract Unit	`notifyViewCreated(fragmentAdapter: BrowseFragment.MainFragmentAdapter<Fragment!>!)` Fragments are required to invoke this callback once their view is created inside `Fragment#onViewCreated` method.

Public methods

notifyDataReady

abstract fun notifyDataReady(fragmentAdapter: BrowseFragment.MainFragmentAdapter<Fragment!>!): Unit

Fragments mapped to PageRow are required to invoke this callback once their data is created for transition, the entrance animation only after receiving this callback. Failure to invoke this method will lead to fragment not showing up.

Parameters
`fragmentAdapter`	BrowseFragment.MainFragmentAdapter<Fragment!>!: `MainFragmentAdapter` used by the current fragment.

showTitleView

abstract fun showTitleView(show: Boolean): Unit

Show or hide title view in BrowseFragment for fragments mapped to PageRow. Otherwise the request is ignored, in that case BrowseFragment is fully in control of showing/hiding title view.

When HeadersFragment is visible, BrowseFragment will hide search affordance view if there are other focusable rows above currently focused row.

Parameters
`show`	Boolean: Boolean indicating whether or not to show the title view.

notifyViewCreated

abstract fun notifyViewCreated(fragmentAdapter: BrowseFragment.MainFragmentAdapter<Fragment!>!): Unit

Fragments are required to invoke this callback once their view is created inside Fragment#onViewCreated method. BrowseFragment starts the entrance animation only after receiving this callback. Failure to invoke this method will lead to fragment not showing up.

Parameters
`fragmentAdapter`	BrowseFragment.MainFragmentAdapter<Fragment!>!: `MainFragmentAdapter` used by the current fragment.