如何将所选电影的数据提取到detailActivity，然后再提取到细节activity中的片段？

提问者：小点点

如何将所选电影的数据提取到detailActivity，然后再提取到细节activity中的片段？

NowShowingFragment.java

    package com.example.bookit.Fragments;

    import android.content.Context;
    import android.content.Intent;
    import android.net.ConnectivityManager;
    import android.net.NetworkInfo;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.AdapterView;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.LinearLayout;
    import android.widget.ProgressBar;
    import android.widget.TextView;
    import android.widget.Toast;

    import androidx.annotation.NonNull;
    import androidx.annotation.Nullable;
    import androidx.fragment.app.Fragment;
    import androidx.recyclerview.widget.LinearLayoutManager;
    import androidx.recyclerview.widget.RecyclerView;
    import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

    import com.android.volley.Response;
    import com.android.volley.VolleyError;
    import com.android.volley.toolbox.StringRequest;
    import com.android.volley.toolbox.Volley;
    import com.example.bookit.Activities.ApiConfig;
    import com.example.bookit.Activities.MovieDetailActivity;
    import com.example.bookit.Adapters.NowShowingAdapter;
    import com.example.bookit.Models.Movie;
    import com.example.bookit.R;
    import com.google.gson.Gson;
    import com.google.gson.reflect.TypeToken;

    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;

    import java.lang.reflect.Type;
    import java.util.ArrayList;

    public class NowShowingFragment extends Fragment {

        private SwipeRefreshLayout swipeRefreshLayout;

        private LinearLayout errorContainer;
        private ImageView ivError;
        private TextView tvError;
        private Button btnRetry;

        private ProgressBar progressBar;
        private RecyclerView rvNowShowing;
        private ArrayList<Movie> nowShowingMovieList;
        private NowShowingAdapter nowShowingAdapter;

        private Context mContext;


        public NowShowingFragment() {
        }

        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            // Inflate the layout for this fragment
            return inflater.inflate(R.layout.now_showing_fragment, container, false);
        }

        public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
            super.onViewCreated(view, savedInstanceState);

            mContext = getContext();

            swipeRefreshLayout = view.findViewById(R.id.swipeLayout);

            errorContainer = view.findViewById(R.id.errorContainer);
            ivError = view.findViewById(R.id.ivError);
            tvError = view.findViewById(R.id.tvError);
            btnRetry = view.findViewById(R.id.btnRetry);

            progressBar = view.findViewById(R.id.progressBar);
            rvNowShowing = view.findViewById(R.id.rvNowShowing);

            swipeRefreshLayout.setOnRefreshListener(new 
                SwipeRefreshLayout.OnRefreshListener() {
                @Override
                public void onRefresh() {
                    fetchNowShowingDataFromServer();
                }
            });

            btnRetry.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    fetchNowShowingDataFromServer();
                }
            });

            fetchNowShowingDataFromServer();

        }

        private void fetchNowShowingDataFromServer() {

            if(!isNetworkConnected()){
                progressBar.setVisibility(View.GONE);
                errorContainer.setVisibility(View.VISIBLE);
                return;
            }

            progressBar.setVisibility(View.VISIBLE);
            errorContainer.setVisibility(View.GONE);

            StringRequest Request = new StringRequest(ApiConfig.GET_MOVIE_DETAILS_URL, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    progressBar.setVisibility(View.GONE);
                    swipeRefreshLayout.setRefreshing(false);
                    errorContainer.setVisibility(View.GONE);
                    Log.i("mytag", response);

                    try {
                        JSONObject jsonResponse = new JSONObject(response);
                        JSONArray movieArray = jsonResponse.getJSONArray("movie");

                        Gson gson = new Gson();
                        Type movielistType = new TypeToken<ArrayList<Movie>>(){}.getType();


                        nowShowingMovieList = gson.fromJson(movieArray.toString(),movielistType);


                        nowShowingAdapter = new NowShowingAdapter(nowShowingMovieList, new AdapterView.OnItemClickListener() {
                            @Override
                            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                                Intent intent = new Intent(mContext, MovieDetailActivity.class);
                                intent.putExtra("movie",nowShowingMovieList.get(position));
                                startActivity(intent);

                            }
                        });


                        rvNowShowing.setLayoutManager(new LinearLayoutManager(mContext, RecyclerView.VERTICAL, false));
                        rvNowShowing.setAdapter(nowShowingAdapter);


                    } catch (JSONException e) {
                        errorContainer.setVisibility(View.VISIBLE);
                        e.printStackTrace();
                        Toast.makeText(mContext, "Unable to process Server Response", Toast.LENGTH_SHORT).show();
                    }

                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    progressBar.setVisibility(View.GONE);
                    swipeRefreshLayout.setRefreshing(false);
                    errorContainer.setVisibility(View.VISIBLE);
                    error.printStackTrace();
                    Toast.makeText(mContext, "Unable to fetch Data from Server", Toast.LENGTH_SHORT).show();

                }
            });

            Volley.newRequestQueue(mContext.getApplicationContext()).add(Request);
        }

        private boolean isNetworkConnected(){
            ConnectivityManager connectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.isConnected()) {
                return true;
            }else {
                return false;
            }
        }

        @Override
        public void onPause() {
            super.onPause();
        }

        @Override
        public void onResume() {
            super.onResume();
        }

    }

它导致了细节activity（MovieDetailActivity.java）

    package com.example.bookit.Activities;

    import android.net.Uri;
    import android.os.Bundle;

    import com.example.bookit.Adapters.MovieDetailPagerAdapter;
    import com.example.bookit.Fragments.NowShowingFragment;
    import com.example.bookit.Models.Movie;
    import com.google.android.material.floatingactionbutton.FloatingActionButton;
    import com.google.android.material.snackbar.Snackbar;

    import androidx.appcompat.app.AppCompatActivity;
    import androidx.appcompat.widget.Toolbar;
    import androidx.cardview.widget.CardView;
    import androidx.fragment.app.FragmentManager;
    import androidx.viewpager.widget.ViewPager;

    import android.view.View;
    import android.widget.ImageView;
    import android.widget.MediaController;
    import android.widget.RatingBar;
    import android.widget.TextView;
    import android.widget.VideoView;

    import com.example.bookit.R;
    import com.google.android.material.tabs.TabLayout;
    import com.squareup.picasso.Picasso;


    public class MovieDetailActivity extends AppCompatActivity {

        private Movie selectedMovie ;

        private VideoView movieTrailer;
        private ImageView ivmovieImage;
        private TextView tvMovieName;
        private TextView tvMovieReleaseDate;
        private RatingBar ratingBar;
        private TextView tvMovieRating;
        private CardView cvBookTicket;

        private TabLayout tabMovieDetail;
        private ViewPager detailViewPager;

        private MovieDetailPagerAdapter movieDetailPagerAdapter;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_movie_detail);
            Toolbar toolbar = findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);

            FloatingActionButton fab = findViewById(R.id.fab);
            fab.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                            .setAction("Action", null).show();
                }
            });

            movieTrailer = findViewById(R.id.movieTrailer);
            ivmovieImage = findViewById(R.id.ivMovieImage);
            tvMovieName = findViewById(R.id.tvMovieName);
            tvMovieRating = findViewById(R.id.tvMovieRating);
            tvMovieReleaseDate = findViewById(R.id.tvMovieReleaseDate);
            ratingBar = findViewById(R.id.ratingBar);
            cvBookTicket = findViewById(R.id.cvBookTicket);

            tabMovieDetail = findViewById(R.id.tabMovieDetail);
            detailViewPager = findViewById(R.id.detailViewPager);


            // movieDetailPagerAdapter = new MovieDetailPagerAdapter(getSupportFragmentManager());
            FragmentManager fm = getSupportFragmentManager();
            movieDetailPagerAdapter = new MovieDetailPagerAdapter(fm);

            detailViewPager.setAdapter(movieDetailPagerAdapter);
            tabMovieDetail.setupWithViewPager(detailViewPager);

            selectedMovie = (Movie) getIntent().getSerializableExtra("movie");

            int movieId = selectedMovie.getMovieId();

            Picasso.get().load(selectedMovie.getMovieImage()).placeholder(R.drawable.image_placeholder).into(ivmovieImage);
            tvMovieName.setText(selectedMovie.getMovieName());
            tvMovieReleaseDate.setText(String.valueOf(selectedMovie.getMovieReleaseDate()));
            tvMovieRating.setText(String.valueOf(selectedMovie.getMovieRating()));

            ratingBar.setRating((float) selectedMovie.getMovieRating());

            //holder.ratingBar.setRating((float) dataset.get(position).getMovieRating());
            //ratingBar.setProgress(Integer.parseInt(String.valueOf(selectedMovie.getMovieRating())));
            //  String URL = selectedMovie.getMovieTrailerUrl();
            //  movieTrailer.setVideoURL(Uri.parse(URL));
            // movieTrailer.start();
            movieTrailer.setVideoURI(Uri.parse(selectedMovie.getMovieTrailerUrl()));
            movieTrailer.start();

            cvBookTicket.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                }
            });


                sendInfoData();

        }

        private void sendInfoData() {

            Bundle bundle = new Bundle();
            bundle.putString("language", selectedMovie.getMovieLanguage());
            bundle.putString("duration", selectedMovie.getMovieDuration());
            bundle.putString("director", selectedMovie.getMovieDirector());
            bundle.putString("genre", selectedMovie.getMovieGenre());
            bundle.putString("description", selectedMovie.getMovieDescription());
            bundle.putSerializable("selected", selectedMovie);

            // set MyFragment Arguments
            NowShowingFragment movieObject = new NowShowingFragment();
            movieObject.setArguments(bundle);

        }

    }

它包含3个片段，它们是:i）MovieInformationFragment.java

    package com.example.bookit.Fragments;

    import android.os.Bundle;

    import androidx.annotation.NonNull;
    import androidx.annotation.Nullable;
    import androidx.fragment.app.Fragment;
    import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ProgressBar;
    import android.widget.TextView;

    import com.example.bookit.Activities.MovieDetailActivity;
    import com.example.bookit.Models.Movie;
    import com.example.bookit.R;

    import javax.crypto.interfaces.PBEKey;

    /**
     * A simple {@link Fragment} subclass.
     */
    public class MovieInfromationFragment extends Fragment {


        private TextView tvMovieLanguage;
        private TextView tvMovieGenre;
        private TextView tvMovieDuration;
        private TextView tvMovieDirector;


        public MovieInfromationFragment() {
            // Required empty public constructor
        }


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {

            // Inflate the layout for this fragment
            return inflater.inflate(R.layout.fragment_movie_infromation, container, false);
        }

        public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
            super.onViewCreated(view, savedInstanceState);

            tvMovieLanguage = view.findViewById(R.id.tvMovieLanguage);
            tvMovieGenre = view.findViewById(R.id.tvMovieGenre);
            tvMovieDirector = view.findViewById(R.id.tvMovieDirector);
            tvMovieDuration = view.findViewById(R.id.tvMovieDuration);

            tvMovieLanguage.setText(this.getArguments().getString("language"));
            tvMovieGenre.setText(this.getArguments().getString("genre"));
            tvMovieDirector.setText(this.getArguments().getString("director"));
            tvMovieDuration.setText(this.getArguments().getString("duration"));



        }


        public void onPause() {
            super.onPause();
        }

        @Override
        public void onResume() {
            super.onResume();
        }
    }

ii）MovieDescriptionFragment.java它包含电影的故事情节。

    package com.example.bookit.Fragments;

    import android.os.Bundle;

    import androidx.annotation.NonNull;
    import androidx.annotation.Nullable;
    import androidx.fragment.app.Fragment;

    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;

    import com.example.bookit.Models.Movie;
    import com.example.bookit.R;

    /**
     * A simple {@link Fragment} subclass.
     */
    public class MovieDescriptionFragment extends Fragment {

        private TextView tvMovieDescription;


        public MovieDescriptionFragment() {
            // Required empty public constructor
        }


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            // Inflate the layout for this fragment
            return inflater.inflate(R.layout.fragment_movie_description, container, false);
        }
        public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
            super.onViewCreated(view, savedInstanceState);

            tvMovieDescription = view.findViewById(R.id.tvMovieDescription);

            tvMovieDescription.setText(this.getArguments().getString("description"));

        }


        public void onPause() {
            super.onPause();
        }

        @Override
        public void onResume() {
            super.onResume();
        }
    }

iii）moviecastfragment.java它包含所选电影的演员图像和名称。

    package com.example.bookit.Fragments;

    import android.content.Context;
    import android.content.Intent;
    import android.net.ConnectivityManager;
    import android.net.NetworkInfo;
    import android.os.Bundle;

    import androidx.annotation.NonNull;
    import androidx.annotation.Nullable;
    import androidx.fragment.app.Fragment;
    import androidx.recyclerview.widget.LinearLayoutManager;
    import androidx.recyclerview.widget.RecyclerView;
    import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

    import android.util.Log;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.AdapterView;
    import android.widget.ProgressBar;
    import android.widget.Toast;

    import com.android.volley.Response;
    import com.android.volley.VolleyError;
    import com.android.volley.toolbox.StringRequest;
    import com.android.volley.toolbox.Volley;
    import com.example.bookit.Activities.ApiConfig;
    import com.example.bookit.Activities.MovieDetailActivity;
    import com.example.bookit.Adapters.MovieCastAdapter;
    import com.example.bookit.Adapters.NowShowingAdapter;
    import com.example.bookit.Models.Actor;
    import com.example.bookit.Models.Cast;
    import com.example.bookit.Models.Movie;
    import com.example.bookit.R;
    import com.google.gson.Gson;
    import com.google.gson.reflect.TypeToken;

    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;

    import java.io.Serializable;
    import java.lang.reflect.Type;
    import java.util.ArrayList;

    /**
     * A simple {@link Fragment} subclass.
     */
    public class MovieCastFragment extends Fragment {


        private ProgressBar progressBar;
        private RecyclerView rvMoviecast;
        private ArrayList<Actor> movieActorList;
        private MovieCastAdapter movieCastAdapter;

        private Context mContext;

        public MovieCastFragment() {
            // Required empty public constructor
        }


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            // Inflate the layout for this fragment
            return inflater.inflate(R.layout.fragment_movie_cast, container, false);
        }

        @Override
        public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
            super.onViewCreated(view, savedInstanceState);

            mContext = getContext();
            progressBar = view.findViewById(R.id.progressBar);
            rvMoviecast = view.findViewById(R.id.rvMoviecast);

            Serializable castArray = getArguments().getSerializable("selectedMovie");

        }


        @Override
        public void onPause() {
            super.onPause();
        }

        @Override
        public void onResume() {
            super.onResume();
        }

    }

MovieCast片段由MovieCastAdapter组成，因为我在其中使用了回收器视图。

package com.example.bookit.Adapters;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.example.bookit.Models.Actor;
import com.example.bookit.R;
import com.squareup.picasso.Picasso;

import java.util.ArrayList;

public class MovieCastAdapter  extends RecyclerView.Adapter<MovieCastAdapter.movieCastHolder>{

    private ArrayList<Actor> dataset;
    private AdapterView.OnItemClickListener onItemClickListener;

    public MovieCastAdapter() {
    }

    public MovieCastAdapter(ArrayList<Actor> dataset, AdapterView.OnItemClickListener onItemClickListener) {
        this.dataset = dataset;
        this.onItemClickListener = onItemClickListener;
    }

    @NonNull
    @Override
    public movieCastHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_movie_cast, parent, false);
        return new movieCastHolder(v);
    }

    @Override
    public void onBindViewHolder(@NonNull movieCastHolder holder, int position) {

        Context context = holder.itemView.getContext();

        Picasso.get().load(dataset.get(position).getActorImage()).placeholder(R.drawable.image_placeholder).into(holder.ivActorImage);
        holder.tvActorName.setText(dataset.get(position).getActorName());


    }

    @Override
    public int getItemCount() {
        return dataset.size();
    }

    public class movieCastHolder extends RecyclerView.ViewHolder{

        private ImageView ivActorImage;
        private TextView tvActorName;

        public movieCastHolder(@NonNull View itemView) {
            super(itemView);

            ivActorImage = itemView.findViewById(R.id.ivActorImage);
            tvActorName = itemView.findViewById(R.id.tvMovieName);

        }

    }

}

所有这些片段都由MovieDetailPagerAdapter.java管理，我将其代码发布如下:

    package com.example.bookit.Adapters;

    import androidx.fragment.app.Fragment;
    import androidx.fragment.app.FragmentManager;
    import androidx.fragment.app.FragmentPagerAdapter;

    import com.example.bookit.Fragments.MovieCastFragment;
    import com.example.bookit.Fragments.MovieDescriptionFragment;
    import com.example.bookit.Fragments.MovieInfromationFragment;

    public class MovieDetailPagerAdapter extends FragmentPagerAdapter {

        public MovieDetailPagerAdapter(FragmentManager fm) {
            super(fm);
        }

            public CharSequence getPageTitle(int position) {
                if (position==0){
                    return "Information";
                }
                if (position==1){
                    return "Cast";
                }
                if (position==2){
                    return "Description";
                }
                return super.getPageTitle(position);
            }
            @Override
            public Fragment getItem(int position) {
                if (position==0){
                    return new MovieInfromationFragment();
                }else if(position==1){
                    return new MovieCastFragment();
                }else if(position==2){
                    return new MovieDescriptionFragment();
                }
                return null;
            }

            @Override
            public int getCount() {
                return 3;
            }
        }

共2个答案

匿名用户

您只需使用Rovfit获取数据并将其存储在MoviesData列表中，并在DetailActivity中显示特定电影的细节，将该电影对象作为额外对象传递给该activity。就像这样:

Intent intent = new Intent(this, ItemDetailActivity.class);
intent.putExtra("selectedMovie", selectedMovie);
startActivity(intent);

在这里，selectedMovie是要在DetailActivity中显示的电影对象。

然后把电影细节分享给片断，试着这样做:

Bundle arguments = new Bundle();
arguments.putParcelable("selectedMovie", selectedMovie);
MovieDetailFragment fragment = new MovieDetailFragment();
fragment.setArguments(arguments);
this.getSupportFragmentManager().beginTransaction()
       .replace(R.id.movie_detail_container, fragment)
       .commit();

希望它对你有用！

匿名用户

由于您没有提供代码，假设您是从网络获取json，我将不使用代码回答

1-您必须使用asynctask或Rovfit或类似的方法异步获取json列表

2-创建一个movie对象，并使用gson之类的东西将json转换为该对象

3-使用intent或更好的ViewModel之类的东西在视图之间共享数据
ViewModel的文档很容易理解，并且包含了您所需要的示例

4-可选地将数据存储在sqlite中以供脱机使用