搜索電影片段
package com.example.moviemania.views
import android.os.Binder
import android.os.Bundle
import android.text.Editabl
import android.text.TextWatcher
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.EditText
import android.widget.Toast
import androidx.fragment.app.viewModels
import androidx.navigation.fragment.findNavController
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.example.moviemania.adapters.MovieAdapter
import com.example.moviemania.models.Movie
import com.example.moviemania.models.Movies
import com.example.moviemania.R
import com.example.moviemania.databinding.FragmentSearchMoviesBinding
import com.example.moviemania.viewModels.FavViewModel
import com.example.moviemania.viewModels.MovieViewModel
class SearchMoviesFragment : Fragment() {
private lateinit var recyclerView: RecyclerView
private val viewModel: MovieViewModel by viewModels()
private val favViewModel: FavViewModel by viewModels()
private lateinit var binding:FragmentSearchMoviesBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
binding = FragmentSearchMoviesBinding.inflate(layoutInflater,container,false)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
val toolbar = binding.toolbarSearchMoviesFragment
(activity as MainActivity).setSupportActionBar(toolbar)
(activity as MainActivity).getSupportActionBar()?.setDisplayShowHomeEnabled(true)
(activity as MainActivity).getSupportActionBar()?.setDisplayHomeAsUpEnabled(true)
toolbar.setNavigationOnClickListener {
(activity as MainActivity).onBackPressed()
}
super.onViewCreated(view, savedInstanceState)
recyclerView = binding.rvSearchMovie
observeSearchResults()
setListenersForSearch()
observeResponseText()
}
private fun observeResponseText() = viewModel.responseText.observe(viewLifecycleOwner) {
//Toast.makeText(this,it.toString(),Toast.LENGTH_SHORT).show()
Toast.makeText(requireContext(), it, Toast.LENGTH_SHORT).show()
}
private fun observeSearchResults() = viewModel.searchReuslt.observe(viewLifecycleOwner) {
recyclerView.layoutManager = GridLayoutManager(requireContext(), 2)
val adapter = it?.let { MovieAdapter(it) }
recyclerView.adapter = adapter
adapter?.setOnItemClickListener(object : MovieAdapter.onItemClickListener {
override fun onToggleClick(isFavorite: Boolean, item: Movies) {
val movie = Movie(
movieName = item.original_title,
moviePoster = item.poster_path,
movieReleaseDate = item.release_date,
movieBanner = item.backdrop_path,
movieOverview = item.overview
)
if (isFavorite) favViewModel.removeMovie(movie) else favViewModel.insertMovie(movie)
}
override fun onItemClick(position: Int) {
val movie = Movie(
movieName = it[position].original_title,
moviePoster = it[position].poster_path,
movieReleaseDate = it[position].release_date,
movieBanner = it[position].backdrop_path,
movieOverview = it[position].overview,
fav = it[position].fav
)
val action =
SearchMoviesFragmentDirections.actionSearchMoviesFragmentToMovieDetailFragment(
it[position].fav,
movie,
it[position].backdrop_path,
it[position].poster_path,
it[position].original_title,
it[position].release_date,
it[position].overview
)
findNavController().navigate(action)
}
})
}
private fun setListenersForSearch() {
val etSearchText = view?.findViewById<EditText>(R.id.et_movieSearch)
etSearchText?.addTextChangedListener(object : TextWatcher {
override fun afterTextChanged(s: Editable) {
if (s.length > 3) {
viewModel.searchApiCall(s.toString())
}
}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
}
})
}
}
電影配接器
package com.example.moviemania.adapters
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.example.moviemania.extensions.GlideImageExtension.loadImage
import com.example.moviemania.models.Movies
import com.example.moviemania.R
import com.example.moviemania.databinding.MovieListBinding
class MovieAdapter(private val list: List<Movies>) :
RecyclerView.Adapter<MovieAdapter.MyViewHolder>() {
private lateinit var myListener: onItemClickListener
interface onItemClickListener {
fun onToggleClick(isFavorite: Boolean, item: Movies)
fun onItemClick(position: Int)
}
fun setOnItemClickListener(listener: onItemClickListener) {
myListener = listener
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
val binding: MovieListBinding =
MovieListBinding.inflate(LayoutInflater.from(parent.context), parent, false)
return MyViewHolder(
binding,
myListener
)
}
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
val currentItem = list[position]
holder.bind(currentItem)
}
override fun getItemCount(): Int {
return list.size
}
inner class MyViewHolder(private val binding: MovieListBinding, listener: onItemClickListener) :
RecyclerView.ViewHolder(binding.root) {
init {
itemView.setOnClickListener {
with(listener) { onItemClick(adapterPosition) }
}
}
fun bind(item: Movies) {
item.poster_path?.let { binding.ivMoviePoster.loadImage(it) }
binding.tvMovieName.text = item.original_title
binding.movieReleaseDate.text = item.release_date
binding.favIcon.setImageResource(if (item.fav) R.drawable.redheart else R.drawable.redheart_border)
binding.favIcon.setOnClickListener {
myListener.onToggleClick(item.fav, item)
item.fav = !item.fav
notifyItemChanged(adapterPosition)
}
}
}
}
我希望當回應結果可用意味著搜索到的電影不存在時，recyclerview 應該清除并且螢屏應該是空的。目前在這種情況下，它只顯示吐司，但最后一次成功的搜索資料仍顯示在螢屏上。我想要的是從recyclerview中清除資料
uj5u.com熱心網友回復：
當您必須在任何操作上更新 RecyclerView 時，請將其添加到您的配接器
public fun setData(private val newList: List<Movies>) {
lists.clear();
lists.addAll(newList);
notifyDataSetChanged();
}
比使用來自 Activity/Fragment 的新資料呼叫此方法
配接器.updateData(viewModelsWithNewData);
轉載請註明出處，本文鏈接：https://www.uj5u.com/qukuanlian/513342.html