Question

我在来自recycleview的show detail类中遇到任何问题， recycleview是显示但细节不起作用，我不明白如何点击回收视图中的位置，

这是我的ListBerita.java

＆＃13;

 
        
        stringRequest = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                Log.d("response ", response);
                try {
                    JSONObject jsonObject = new JSONObject(response);
                    JSONArray jsonArray = jsonObject.getJSONArray("berita");
                    for (int a = 0; a < jsonArray.length(); a++) {
                        JSONObject json = jsonArray.getJSONObject(a);
                        HashMap<String, String> map = new HashMap<String, String>();
                        map.put("id_berita", json.getString("id_berita"));
                        map.put("id_pos", json.getString("id_pos"));
                        map.put("nama_pos", json.getString("nama_pos"));
                        map.put("gambar_berita", json.getString("gambar_berita"));
                        map.put("berita", json.getString("berita"));
                        list_data.add(map);
                        AdapterList adapter = new AdapterList(ListBerita.this, list_data);
                        beritalist.setAdapter(adapter);


                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }

            }



<!-- begin snippet: js hide: false console: true babel: false -->

＆＃13;

            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(ListBerita.this, error.getMessage(), Toast.LENGTH_SHORT).show();
            }
        });

        requestQueue.add(stringRequest);
    }

}

这是我的适配器

＆＃13;

package baru.azoel.ayomuncak.Adapter;

import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;

import java.util.ArrayList;
import java.util.HashMap;

import baru.azoel.ayomuncak.DetailBerita;
import baru.azoel.ayomuncak.ListBerita;
import baru.azoel.ayomuncak.R;

/**
 * Created by azoel.
 */
public class AdapterList extends RecyclerView.Adapter<AdapterList.ViewHolder>{

    Context context;
    ArrayList<HashMap<String, String>> list_data;

    public AdapterList(ListBerita beritaActivity, ArrayList<HashMap<String, String>> list_data) {
        this.context = beritaActivity;
        this.list_data = list_data;

    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_berita, null);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        Glide.with(context)
                .load("http://marimuncak.000webhostapp.com/images/" + list_data.get(position).get("gambar_berita"))
                .crossFade()
                .placeholder(R.mipmap.ic_launcher)
                .into(holder.imgberita);
        holder.txtnama.setText(list_data.get(position).get("nama_pos"));
        holder.txtberita.setText(list_data.get(position).get("berita"));

       
    }


    @Override
    public int getItemCount() {
        return list_data.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        TextView txtberita;
        ImageView imgberita;
        TextView txtnama;
        public ViewHolder(View itemView) {
            super(itemView);
            txtnama = (TextView) itemView.findViewById(R.id.txtnama);
            txtberita = (TextView) itemView.findViewById(R.id.txtberita);
            imgberita = (ImageView) itemView.findViewById(R.id.imgberita);
        }
    }

}

＆＃13;

Answer 1

在content方法中为onBindViewHolder

添加点击监听器

itemView

如果您希望在活动/片段类而不是适配器类中添加项目单击，则有多种方法可以执行此操作。其中一个写在下面。

创建课程@Override public void onBindViewHolder(ViewHolder holder, int position) { Glide.with(context) .load("http://marimuncak.000webhostapp.com/images/" + list_data.get(position).get("gambar_berita")) .crossFade() .placeholder(R.mipmap.ic_launcher) .into(holder.imgberita); holder.txtnama.setText(list_data.get(position).get("nama_pos")); holder.txtberita.setText(list_data.get(position).get("berita")); holder.itemView.setOnClickListener(new View.onClickListener() { @Override public void onClick(View v) { //Do something here with position } }); }

<强> ItemClickSupport.java

ItemClickSupport

您可以将此课程用于所有public class ItemClickSupport { private final RecyclerView mRecyclerView; private OnItemClickListener mOnItemClickListener; private OnItemLongClickListener mOnItemLongClickListener; private View.OnClickListener mOnClickListener = new View.OnClickListener() { @Override public void onClick(View v) { if (mOnItemClickListener != null) { RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v); mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v); } } }; private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() { @Override public boolean onLongClick(View v) { if (mOnItemLongClickListener != null) { RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v); return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v); } return false; } }; private RecyclerView.OnChildAttachStateChangeListener mAttachListener = new RecyclerView.OnChildAttachStateChangeListener() { @Override public void onChildViewAttachedToWindow(View view) { if (mOnItemClickListener != null) { view.setOnClickListener(mOnClickListener); } if (mOnItemLongClickListener != null) { view.setOnLongClickListener(mOnLongClickListener); } } @Override public void onChildViewDetachedFromWindow(View view) { } }; private ItemClickSupport(RecyclerView recyclerView) { mRecyclerView = recyclerView; mRecyclerView.setTag(R.id.item_click_support, this); mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener); } public static ItemClickSupport addTo(RecyclerView view) { ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support); if (support == null) { support = new ItemClickSupport(view); } return support; } public static ItemClickSupport removeFrom(RecyclerView view) { ItemClickSupport support = (ItemClickSupport) view.getTag(R.id.item_click_support); if (support != null) { support.detach(view); } return support; } public ItemClickSupport setOnItemClickListener(OnItemClickListener listener) { mOnItemClickListener = listener; return this; } public ItemClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) { mOnItemLongClickListener = listener; return this; } private void detach(RecyclerView view) { view.removeOnChildAttachStateChangeListener(mAttachListener); view.setTag(R.id.item_click_support, null); } public interface OnItemClickListener { void onItemClicked(RecyclerView recyclerView, int position, View v); } public interface OnItemLongClickListener { boolean onItemLongClicked(RecyclerView recyclerView, int position, View v); } }，如下所示

recyclerViews

如果您有不同的导航手势

，您甚至可以覆盖

ItemClickSupport.addTo(recyclerView).setOnItemClickListener(new ItemClickSupport.OnItemClickListener() {
        @Override
        public void onItemClicked(RecyclerView recyclerView, int position, View v) {
            //Do something here with position
        }
    });

Answer 2

public class AdapterList extends RecyclerView.Adapter<AdapterList.ViewHolder>{

Context context;
ArrayList<HashMap<String, String>> list_data;

public AdapterList(ListBerita beritaActivity, ArrayList<HashMap<String, String>> list_data) {
    this.context = beritaActivity;
    this.list_data = list_data;

}

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

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    Glide.with(context)
            .load("http://marimuncak.000webhostapp.com/images/" + list_data.get(position).get("gambar_berita"))
            .crossFade()
            .placeholder(R.mipmap.ic_launcher)
            .into(holder.imgberita);
    holder.txtnama.setText(list_data.get(position).get("nama_pos"));
    holder.txtberita.setText(list_data.get(position).get("berita"));
   holder.itemView.setOnClickListener(new View.onClickListener() {
   @Override
   public void onClick(View v) {
     onItemClickListener.onItemClick(position);
   }
});

}


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

public class ViewHolder extends RecyclerView.ViewHolder {
    TextView txtberita;
    ImageView imgberita;
    TextView txtnama;
    public ViewHolder(View itemView) {
        super(itemView);
        txtnama = (TextView) itemView.findViewById(R.id.txtnama);
        txtberita = (TextView) itemView.findViewById(R.id.txtberita);
        imgberita = (ImageView) itemView.findViewById(R.id.imgberita);
    }
}

   public void setOnItemClickListener(OnItemClickListener onItemClickListener){
    this.onItemClickListener = onItemClickListener;
}

OnItemClickListener onItemClickListener;

  public interface OnItemClickListener{
    void onItemClick(int position);
}
}

你的活动。在Oncreate（）

 public class TestActivity extends AppCompatActivity implements AdapterList.OnItemClickListener {



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_test);
     your_adapter.setOnItemClickListener(this);
}

  @Override
public void onItemClick(int position) {
   // code here
}
}

Android Studio recycleview到详细信息无效

2 个答案: