回收器查看项目上单击侦听器不起作用

Question

很抱歉给您带来不便，但这是我第一次尝试。我一直在尝试做这个应用程序，它有一个回收器视图，我想让它打开一个铬页面。问题是，尽管我尝试了很多视频，但我无法实现itemOnClickListener。你能指出我的错误在哪里吗？

我的适配器：

package com.example.practica1.adapter
import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.core.content.ContentProviderCompat.requireContext
import androidx.fragment.app.FragmentActivity
import androidx.recyclerview.widget.RecyclerView
import com.bumptech.glide.Glide
import com.bumptech.glide.load.engine.DiskCacheStrategy
import com.example.practica1.R
import com.example.practica1.data.Video
class MainAdapter(private val context: Context, private val videos: List<Video>,
val listener: MyOnClickListener
): RecyclerView.Adapter<MainAdapter.ViewHolder>(){
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MainAdapter.ViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.item_cartoon, parent, false)
return ViewHolder(view)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val video = videos[position]
holder.title.text = video.data.short_title
holder.serieTitle.text = video.data.show.title
holder.durationTitle.text = video.data.video.duration + " seg"
Glide.with(context)
.load(video.data.imagepath)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.override(400, 400)
.centerCrop()
.into(holder.imagePrev)
}
override fun getItemCount() = videos.size
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val title: TextView = itemView.findViewById(R.id.videoTitle)
val serieTitle: TextView = itemView.findViewById(R.id.serieTitle)
val durationTitle: TextView = itemView.findViewById(R.id.durationTitle)
val imagePrev: ImageView = itemView.findViewById(R.id.photoPreview)
init{
itemView.setOnClickListener{
val position = adapterPosition
listener.onClick(position)
}
}
}
interface MyOnClickListener{
fun onClick(position: Int)
}
}

我试图实现该方法的片段(toast消息没有出现(

package com.example.practica1.fragments
import android.os.Bundle
import android.util.Log
import android.util.Log.d
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import androidx.fragment.app.Fragment
import androidx.navigation.Navigation
import androidx.recyclerview.widget.RecyclerView
import com.example.practica1.R
import com.example.practica1.adapter.MainAdapter
import com.example.practica1.data.ApiInterface
import com.example.practica1.data.Video
import com.example.practica1.databinding.FragmentMenuBinding
import com.haerul.bottomfluxdialog.BottomFluxDialog
import com.haerul.bottomfluxdialog.BottomFluxDialog.OnInputListener
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory
class MenuFragment : Fragment() {
private var _binding: FragmentMenuBinding? = null
private val binding get() = _binding!!
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
_binding = FragmentMenuBinding.inflate(inflater, container, false)
val view = inflater.inflate(R.layout.fragment_menu, container, false)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
val retrofit = Retrofit.Builder()
.baseUrl("https://www.cartoonnetwork.com.co")
.addConverterFactory(GsonConverterFactory.create())
.build()
val api = retrofit.create(ApiInterface::class.java)
showProgress()
api.fetchAllVideos().enqueue(object : Callback<List<Video>> {
override fun onResponse(call: Call<List<Video>>, response: Response<List<Video>>) {
if (response.isSuccessful()) {
d("daniel", "onResponse ${response.body()!![0].id}")
if (response.body()!!.size > 0) {
showData(response.body()!!)
getResult(true, "Sucess")
} else
getResult(false, response.message())
hideProgress()
}
}
override fun onFailure(call: Call<List<Video>>, t: Throwable) {
d("daniel", "onFailure")
getResult(false, "Request Timeout. Please Try Again!")
hideProgress()
}
})
binding.search.setOnClickListener { v -> showDialog(v) }
}
fun showData(videos: List<Video>){
val test: RecyclerView = requireActivity().findViewById(R.id.recycler_viewMenu)
test.apply{
adapter = MainAdapter(context, videos, object: MainAdapter.MyOnClickListener{
override fun onClick(position: Int) {
Toast.makeText(requireContext(), position, Toast.LENGTH_SHORT).show()
}
})
}
}
fun showProgress(){
binding.swipeRefresh.setRefreshing(true)
binding.emptyView.setVisibility(View.GONE)
binding.shimmer.startShimmer()
binding.shimmer.setVisibility(View.VISIBLE)
binding.recyclerViewMenu.setVisibility(View.GONE)
}
fun hideProgress(){
binding.swipeRefresh.setRefreshing(false)
binding.shimmer.stopShimmer()
binding.shimmer.setVisibility(View.GONE)
binding.recyclerViewMenu.setVisibility(View.VISIBLE)
}
fun getResult(status: Boolean, message: String){
if(!status) {
binding.emptyView.setVisibility(View.VISIBLE)
binding.textEmptyErr.setText(message)
}
else
binding.emptyView.setVisibility((View.GONE))
}
private fun showDialog(view: View){
BottomFluxDialog.inputDialog(requireActivity())
.setTextTitle("Input Title")
.setTextMessage("This is an input message")
.setRightButtonText("SUBMIT")
.setInputListener(object : OnInputListener {
override fun onSubmitInput(text: String?) {
val bundle = Bundle()
bundle.putString("search", text)
Navigation.findNavController(view)
.navigate(R.id.action_menuFragment_to_listFragment, bundle)
}
override fun onCancelInput() {}
})
.show()
}

}

谢谢！

Answer 1

如果您的数据显示在回收器视图中，并且您在项目点击时比崩溃

replace this toast link :-                     
Toast.makeText(requireContext(), position, Toast.LENGTH_SHORT).show()

用这个：-

Toast.makeText(requireContext(), "$position", Toast.LENGTH_SHORT).show()

或者，如果您的视频列表在recyclerator视图中不可见，那么您还可以在xml或代码中添加布局管理器。