在这个应用程序中，我尝试SearchView.OnQueryTextListener像这样在单独的 kotlin 文件中实现
import androidx.appcompat.widget.SearchView
inline fun SearchView.OnQueryTextListener(crossinline listener: (String) -> Unit) {
this.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
override fun onQueryTextSubmit(query: String?): Boolean {
return true
}
override fun onQueryTextChange(newText: String?): Boolean {
listener(newText.orEmpty())
return true
}
})
}
但是当我尝试在片段中使用它时，我在其他方法中看不到它，我看到了这个错误Interface OnQueryTextListener does not have constructors
片段的完整代码
AndroidEntryPoint
class TasksFragment : Fragment(R.layout.fragment_tasks) {
private val tasksViewModel: TasksViewModel by viewModels()
private var binding: FragmentTasksBinding?=null
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
binding = FragmentTasksBinding.inflate(inflater, container, false)
val tasksAdapter:TasksAdapter = TasksAdapter()
binding?.apply {
recyclerViewTasks.apply {
adapter = tasksAdapter
layoutManager = LinearLayoutManager(requireContext())
setHasFixedSize(true)
}
}
tasksViewModel.task.observe(viewLifecycleOwner, {
tasksAdapter.submitList(it)
})
return binding!!.root
}
override fun onDestroyView() {
super.onDestroyView()
binding = null
}
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
inflater.inflate(R.menu.menu_fragment_tasks,menu)
val searchItem = menu.findItem(R.id.action_search)
val searchView = searchItem.actionView as SearchView
searchView.OnQueryTextListener{ //
}
}
}