如何制作“查看所有项目"按钮将数据从RecyclerView传递到另一个RecyclerView片段-AndroidX [英] How to make "See All Item" button to pass data from RecyclerView to Another RecyclerView fragment - AndroidX

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问题描述

Q 建议

我想按"See All Item"按钮将数据从RecyclerView传递到另一个RecyclerView片段 看起来像具有"More"按钮的Play商店，可以看到另一个片段中的所有物品

I want to make the "See All Item" button to pass data from RecyclerView to Another RecyclerView fragment it looks like play store that has the "More" button to see all item in another fragment

AdapterSectionHotTrendingNews.java 

public class AdapterSectionHotTrendingNews extends RecyclerView.Adapter{

private Context mContext;
private ArrayList<ModelSectionHotTrendingNews> modelSectionHotTrendingNews;

public AdapterSectionHotTrendingNews(Context mContext, ArrayList<ModelSectionHotTrendingNews> modelSectionHotTrendingNews) {
    this.mContext = mContext;
    this.modelSectionHotTrendingNews = modelSectionHotTrendingNews;
}

@Override
public SectionHotTrendingNewsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_section_hottrendingnews, null);
    return new SectionHotTrendingNewsViewHolder(v);
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

    SectionHotTrendingNewsViewHolder sectionHotTrendingNewsViewHolder = (SectionHotTrendingNewsViewHolder) holder;
    ModelSectionHotTrendingNews modelSectionHotTrendingNewsX = modelSectionHotTrendingNews.get(position);

    //Set
    sectionHotTrendingNewsViewHolder.TVSectionTitle.setText(modelSectionHotTrendingNewsX.getHeaderTitle());

    ArrayList singleSectionItems = modelSectionHotTrendingNewsX.getAllItemsInSection();
    /*AdapterSingleHotLatestNews.RecyclerViewClickListener listenerLatestNews;
    listenerLatestNews = new AdapterSingleHotLatestNews.RecyclerViewClickListener() {
        @Override
        public void onRowHotLatestNewsClick(View view, int position) {

        }

        @Override
        public void onIconHotLatestNewsClick(View view, int position) {

        }
    };*/
    AdapterSingleHotTrendingNews itemListDataAdapter = new AdapterSingleHotTrendingNews(mContext, singleSectionItems);

    /*itemRowHolder.recycler_view_list.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            int action = event.getAction();
            switch (action) {
                case MotionEvent.ACTION_DOWN:
                    // Disallow ScrollView to intercept touch events.
                    v.getParent().requestDisallowInterceptTouchEvent(true);
                    break;
                case MotionEvent.ACTION_UP:
                    //Allow ScrollView to intercept touch events once again.
                    v.getParent().requestDisallowInterceptTouchEvent(false);
                    break;
            }
            // Handle RecyclerView touch events.
            v.onTouchEvent(event);
            return true;
        }
    });*/


    final String sectionTitle = modelSectionHotTrendingNewsX.getHeaderTitle();
    sectionHotTrendingNewsViewHolder.BTNHotTrendingNewsMore.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(v.getContext(), "click event on more, "+sectionTitle, Toast.LENGTH_SHORT).show();
        }
    });


    /*Glide.with(mContext)
            .load(feedItem.getImageURL())
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .centerCrop()
            .error(R.drawable.bg)
            .into(feedListRowHolder.thumbView);*/

    //SetRecyclerView
    sectionHotTrendingNewsViewHolder.RecyclerViewSectionHotTrendingNews.setHasFixedSize(true);
    sectionHotTrendingNewsViewHolder.RecyclerViewSectionHotTrendingNews.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false));
    sectionHotTrendingNewsViewHolder.RecyclerViewSectionHotTrendingNews.setAdapter(itemListDataAdapter);
    sectionHotTrendingNewsViewHolder.RecyclerViewSectionHotTrendingNews.setNestedScrollingEnabled(false);
}

@Override
public int getItemCount() {
    int itemCount = modelSectionHotTrendingNews.size();
    return itemCount;
}

public class SectionHotTrendingNewsViewHolder extends RecyclerView.ViewHolder {

    protected TextView TVSectionTitle;
    protected ImageView BTNHotTrendingNewsMore;
    protected RecyclerView RecyclerViewSectionHotTrendingNews;

    public SectionHotTrendingNewsViewHolder(View itemView) {
        super(itemView);

        TVSectionTitle = (TextView) itemView.findViewById(R.id.TV_SectionTitle);
        BTNHotTrendingNewsMore= (ImageView) itemView.findViewById(R.id.BTN_HotTrendingNewsMore);
        RecyclerViewSectionHotTrendingNews = (RecyclerView) itemView.findViewById(R.id.RecyclerView_Section_HotTrendingNews);
    }

}

}

AdapterSingleHotTrendingNews.java 

public class AdapterSingleHotTrendingNews extends RecyclerView.Adapter{

private Context mContext;
private ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews;

public AdapterSingleHotTrendingNews(Context mContext, ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews) {
    this.mContext = mContext;
    this.modelSingleHotTrendingNews = modelSingleHotTrendingNews;
}

//Container
@Override
public SingleHotTrendingNewsViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
    View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_single_hottrendingnews, null);
    return new SingleHotTrendingNewsViewHolder(v);
}

//Fill Container with Model Setter Getter
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {

    final SingleHotTrendingNewsViewHolder singleHotTrendingNewsViewHolder = (SingleHotTrendingNewsViewHolder) holder;
    final ModelSingleHotTrendingNews modelSingleHotTrendingNewsX = modelSingleHotTrendingNews.get(position);

    //Set
    singleHotTrendingNewsViewHolder.TVGameDate.setText(modelSingleHotTrendingNewsX.getGamedate());
    singleHotTrendingNewsViewHolder.TVGameDescription.setText(modelSingleHotTrendingNewsX.getGamedescription());
    singleHotTrendingNewsViewHolder.IMGGameImage.setImageResource(modelSingleHotTrendingNewsX.getGameimage());



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

            final Boolean booltrendingnewssaving = modelSingleHotTrendingNewsX.getTrendingnewssaving();

            final int id = modelSingleHotTrendingNewsX.getId();

            if (booltrendingnewssaving == true){
                Toast.makeText(v.getContext(), "Turn Off Saved News " + id, Toast.LENGTH_SHORT).show();
                singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setImageResource(R.drawable.saved_off);
                modelSingleHotTrendingNewsX.setTrendingnewssaving(false);
                /*updateSavedNewsSaving("update_newssaving", id, false);*/
            } else if(booltrendingnewssaving == false) {
                Toast.makeText(v.getContext(), "Turn On Saved News " + id, Toast.LENGTH_SHORT).show();
                singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setImageResource(R.drawable.saved_on);
                modelSingleHotTrendingNewsX.setTrendingnewssaving(true);
                /*updateSavedNewsSaving("update_newssaving", id, true);*/
            }
        }
    });



   /* Glide.with(mContext)
            .load(feedItem.getImageURL())
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .centerCrop()
            .error(R.drawable.bg)
            .into(feedListRowHolder.thumbView);*/

    singleHotTrendingNewsViewHolder.ROWHotTrendingNewsContainer.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(v.getContext(), modelSingleHotTrendingNews.get(position).getGamedescription(), Toast.LENGTH_SHORT).show();

            //Passing Data to GameDescriptionActivity
            Intent intent = new Intent(mContext, GameDetailActivity.class);
            intent.putExtra("ImagePKG",  modelSingleHotTrendingNews.get(position).getGameimage());
            intent.putExtra("NamePKG",  modelSingleHotTrendingNews.get(position).getGamedate());
            intent.putExtra("UrlPKG",  modelSingleHotTrendingNews.get(position).getId());
            intent.putExtra("DescriptionPKG",  modelSingleHotTrendingNews.get(position).getGamedescription());
            mContext.startActivity(intent);
        }
    });
}

@Override
public int getItemCount() {
    int itemCount = modelSingleHotTrendingNews.size();
    return itemCount;
}

public class SingleHotTrendingNewsViewHolder extends RecyclerView.ViewHolder{
    TextView TVGameDate;
    TextView TVGameDescription;
    ImageView IMGGameImage;

    ImageView ICONHotTrendingNewsSaving;
    private RelativeLayout ROWHotTrendingNewsContainer;


    public SingleHotTrendingNewsViewHolder(View itemView) {
        super(itemView);

        TVGameDate = itemView.findViewById(R.id.TV_GameDate);
        TVGameDescription = itemView.findViewById(R.id.TV_GameDescription);
        IMGGameImage = itemView.findViewById(R.id.IMG_GameImage);

        ICONHotTrendingNewsSaving = itemView.findViewById(R.id.ICON_HotTrendingNewsSaving);
        ROWHotTrendingNewsContainer = itemView.findViewById(R.id.ROW_HotTrendingNewsContainer);
    }

}

ModelSectionHotTrendingNews.java 

public class ModelSectionHotTrendingNews {

private String headerTitle;
private ArrayList<ModelSingleHotTrendingNews> allItemsInSection;

public ModelSectionHotTrendingNews() {
}

public String getHeaderTitle() {
    return headerTitle;
}

public void setHeaderTitle(String headerTitle) {
    this.headerTitle = headerTitle;
}

public ArrayList<ModelSingleHotTrendingNews> getAllItemsInSection() {
    return allItemsInSection;
}

public void setAllItemsInSection(ArrayList<ModelSingleHotTrendingNews> allItemsInSection) {
    this.allItemsInSection = allItemsInSection;
}

}

ModelSingleHotTrendingNews.java 

public class ModelSingleHotTrendingNews {

private int id;
private String gamedate;
private String gamedescription;
private int gameimage;

private Boolean trendingnewssaving;
private String value;
private String message;

public ModelSingleHotTrendingNews(int id, String gamedate, String gamedescription, int gameimage, Boolean trendingnewssaving, String value, String message) {
    this.id = id;
    this.gamedate = gamedate;
    this.gamedescription = gamedescription;
    this.gameimage = gameimage;
    this.trendingnewssaving = trendingnewssaving;
    this.value = value;
    this.message = message;
}

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getGamedate() {
    return gamedate;
}

public void setGamedate(String gamedate) {
    this.gamedate = gamedate;
}

public String getGamedescription() {
    return gamedescription;
}

public void setGamedescription(String gamedescription) {
    this.gamedescription = gamedescription;
}

public int getGameimage() {
    return gameimage;
}

public void setGameimage(int gameimage) {
    this.gameimage = gameimage;
}

public Boolean getTrendingnewssaving() {
    return trendingnewssaving;
}

public void setTrendingnewssaving(Boolean trendingnewssaving) {
    this.trendingnewssaving = trendingnewssaving;
}

public String getValue() {
    return value;
}

public void setValue(String value) {
    this.value = value;
}

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}

}

FragmentFunction 

public void createDummyData1() {
    ModelSectionHotTrendingNews modelSectionHotTrendingNewsX = new ModelSectionHotTrendingNews();
    modelSectionHotTrendingNewsX.setHeaderTitle("TRENDING NEWS");

    ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews = new ArrayList<ModelSingleHotTrendingNews>();
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(1, "20 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(2, "21 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(3, "22 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(4, "23 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(5, "24 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(6, "25 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(7, "26 Mei 2019", "sdfjiaOIJdosjfsjdfjsoid", R.drawable.kleptocats, false, "x53535", "No Error"));


    modelSectionHotTrendingNewsX.setAllItemsInSection(modelSingleHotTrendingNews);
    modelSectionHotTrendingNews.add(modelSectionHotTrendingNewsX);
}

//已更新 我在SectionAdapterTabHot.java上添加了它 我使用相同的模型，但使用了不同的RecyclerView和Adapter，例如:RecyclerViewMoreSection/SingleTabHot和Section/SingleMoreAdapterTabHot.java

//UPDATED I Added this on SectionAdapterTabHot.java I use same model but different RecyclerView and Adapter like: RecyclerViewMoreSection/SingleTabHot and Section/SingleMoreAdapterTabHot.java

final String sectionTitle = modelSectionHotTrendingNewsX.getHeaderTitle();
    sectionHotTrendingNewsViewHolder.BTNHotTrendingNewsMore.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(v.getContext(), "click event on more, "+sectionTitle, Toast.LENGTH_SHORT).show();
            sectionHotTrendingNewsViewHolder.RecyclerViewMoreSectionHotTrendingNews.setAdapter( new AdapterMoreSingleHotTrendingNews(v.getContext(), modelSectionHotTrendingNews.get(position).getAllItemsInSection()));
            Intent intent = new Intent(mContext, TabMoreHotActivity.class);
            mContext.startActivity(intent);
        }
    });

//SectionAdapterViewHolder

//SectionAdapterViewHolder

public class SectionHotTrendingNewsViewHolder extends RecyclerView.ViewHolder {

    protected TextView TVSectionTitle;
    protected ImageView BTNHotTrendingNewsMore;
    protected RecyclerView RecyclerViewSectionHotTrendingNews;
    protected RecyclerView RecyclerViewMoreSectionHotTrendingNews;

    public SectionHotTrendingNewsViewHolder(View itemView) {
        super(itemView);

        TVSectionTitle = (TextView) itemView.findViewById(R.id.TV_SectionTitle);
        BTNHotTrendingNewsMore= (ImageView) itemView.findViewById(R.id.BTN_HotTrendingNewsMore);
        RecyclerViewSectionHotTrendingNews = (RecyclerView) itemView.findViewById(R.id.RecyclerView_Section_HotTrendingNews);
        RecyclerViewMoreSectionHotTrendingNews = (RecyclerView) itemView.findViewById(R.id.RecyclerViewMore_Section_HotTrendingNews);
    }

}

///这是我要访问itemmore_hot中的RecyclerViewMoreHotTrendingNews的问题，但它不在item_hot中建立

//This is the problem I want to Access RecyclerViewMoreHotTrendingNews in itemmore_hot but it doesn't founded in item_hot

@Override
public SectionHotTrendingNewsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_section_hottrendingnews, null);
    return new SectionHotTrendingNewsViewHolder(v);
}

//这是TabMoreHotActivity.java

//This is TabMoreHotActivity.java

public class TabMoreHotActivity extends AppCompatActivity {

//1
ArrayList<ModelSectionHotTrendingNews> modelSectionHotTrendingNews = new ArrayList<ModelSectionHotTrendingNews>();
AdapterMoreSectionHotTrendingNews adapterMoreSectionHotTrendingNews;

//ModelData
List<ModelSingleHotTrendingNews> modelSingleHotTrendingNews;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragmentmore_tabhot);


    //1
    RecyclerView RecyclerViewMoreSingleHotTrendingNews = findViewById(R.id.RecyclerViewMore_Single_HotTrendingNews);
    RecyclerViewMoreSingleHotTrendingNews.setHasFixedSize(true);
    adapterMoreSectionHotTrendingNews = new AdapterMoreSectionHotTrendingNews(this, modelSectionHotTrendingNews);
    RecyclerViewMoreSingleHotTrendingNews.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
    RecyclerViewMoreSingleHotTrendingNews.setAdapter(adapterMoreSectionHotTrendingNews);
    //Optimized
    RecyclerViewMoreSingleHotTrendingNews.setHasFixedSize(true);
    RecyclerViewMoreSingleHotTrendingNews.setItemViewCacheSize(20);
}

}

//但是当我单击查看所有项目"按钮时出现此错误

//But I got This error when I click "See All Item" button

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.indofun.android.indojoy, PID: 11456
java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.recyclerview.widget.RecyclerView.setAdapter(androidx.recyclerview.widget.RecyclerView$Adapter)' on a null object reference
    at com.indofun.android.indojoy.Adapters.Adapter_HotTrendingNews.AdapterSectionHotTrendingNews$1.onClick(AdapterSectionHotTrendingNews.java:88)
    at android.view.View.performClick(View.java:6891)
    at android.view.View$PerformClick.run(View.java:26083)
    at android.os.Handler.handleCallback(Handler.java:789)
    at android.os.Handler.dispatchMessage(Handler.java:98)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6938)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

推荐答案

从第一个适配器onClick中，调用第二个适配器并更新RecyclerView

From First Adapter onClick, call second adapter and update RecyclerView

sectionHotTrendingNewsViewHolder.BTNHotTrendingNewsMore.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            sectionHotTrendingNewsViewHolder.RecyclerViewSectionHotTrendingNews.setAdapter( new AdapterSingleHotTrendingNews(v.getContext(), modelSectionHotTrendingNews.get(position).getAllItemsInSection()))
        }
    });

或者如果您想在其他活动中显示此更多新闻.然后执行以下操作:

Or if you want to show this More News in another activity. Then do this:

  1. 使 ModelSingleHotTrendingNews 类Serializable像这样:

公共类ModelSingleHotTrendingNews实现了Serializable { ... }

public class ModelSingleHotTrendingNews implements Serializable { ... }

更改onClick

sectionHotTrendingNewsViewHolder.BTNHotTrendingNewsMore.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v){ Intent intent = new Intent(mContext，TabMoreHotActivity.class); Intent().putExtra("MoreNews"，modelSectionHotTrendingNews.get(position).getAllItemsInSection()) mContext.startActivity(intent); } });

sectionHotTrendingNewsViewHolder.BTNHotTrendingNewsMore.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(mContext, TabMoreHotActivity.class); Intent().putExtra("MoreNews", modelSectionHotTrendingNews.get(position).getAllItemsInSection()) mContext.startActivity(intent); } });

在TabMoreHotActivity中使用ArrayList代替ArrayList<ModelSectionHotTrendingNews>

In TabMoreHotActivity use ArrayList instead of ArrayList<ModelSectionHotTrendingNews>

希望这会对您有所帮助.您弄乱了代码:(

hope this will help you. You made your code mess :(

这篇关于如何制作“查看所有项目"按钮将数据从RecyclerView传递到另一个RecyclerView片段-AndroidX的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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