Android | AlertDialog sur l'article RecyclerView Cliquez sur

Question

J'ai implémenté un RecyclerView. Maintenant, je veux afficher un AlertDialog quand un élément de RecyclerView est cliqué. J'ai essayé de nombreuses façons et aucune d'elles n'a fonctionné. Voici ma classe d'adaptation,

public class SearchResultAdapter extends RecyclerView.Adapter<SearchResultAdapter.MyViewHolder> { 
private List<Searchresult> resultList; 

public class MyViewHolder extends RecyclerView.ViewHolder { 
    public TextView item1, item2, item3; 

    public MyViewHolder(View view) { 
     super(view); 
     item1 = (TextView) view.findViewById(R.id.item1); 
     item2 = (TextView) view.findViewById(R.id.item2); 
     item3 = (TextView) view.findViewById(R.id.item3); 
    } 
} 

public SearchResultAdapter(List<Searchresult> resultList) { 
    this.resultList = resultList; 
} 

@Override 
public MyViewHolder onCreateViewHolder(final ViewGroup parent, int viewType) { 
    final View itemView = LayoutInflater.from(parent.getContext()) 
      .inflate(R.layout.search_result_row, parent, false); 
    return new MyViewHolder(itemView); 
} 

@Override 
public void onBindViewHolder(final MyViewHolder holder, int position) { 
    Searchresult result = resultList.get(position); 
    holder.item1.setText(result.getItem1()); 
    holder.item2.setText(result.getItem2()); 
    holder.item3.setText(result.getItem3()); 
} 

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

Le AlertDialog doit afficher article1, article2 et item3.Please me aider à mettre en œuvre un onClickListener sur RecyclerView.

Answer 1

essayer cette creat une classe RecyclerItemClickListener comme celui-ci

package com.ncrypted.recyclerviewwithindex; 

import android.content.Context; 
import android.support.v7.widget.RecyclerView; 
import android.view.GestureDetector; 
import android.view.MotionEvent; 
import android.view.View; 


public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener { 
    private OnItemClickListener mListener; 

    public interface OnItemClickListener { 
     public void onItemClick(View view, int position); 

     public void onLongItemClick(View view, int position); 
    } 

    GestureDetector mGestureDetector; 

    public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) { 
     mListener = listener; 
     mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { 
      @Override 
      public boolean onSingleTapUp(MotionEvent e) { 
       return true; 
      } 

      @Override 
      public void onLongPress(MotionEvent e) { 
       View child = recyclerView.findChildViewUnder(e.getX(), e.getY()); 
       if (child != null && mListener != null) { 
        mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child)); 
       } 
      } 
     }); 
    } 

    @Override 
    public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) { 
     View childView = view.findChildViewUnder(e.getX(), e.getY()); 
     if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) { 
      mListener.onItemClick(childView, view.getChildAdapterPosition(childView)); 
      return true; 
     } 
     return false; 
    } 

    @Override 
    public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { 
    } 


    @Override 
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { 
    } 
} 

attach cliquez pour recyclerview listeuse comme celui-ci

 indexRecyclerView.addOnItemTouchListener(
      new RecyclerItemClickListener(MainActivity.this, indexRecyclerView, new RecyclerItemClickListener.OnItemClickListener() { 

       @Override 
       public void onItemClick(View view, int position) { 
        // show your alert Dailog here 
        } 

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

       } 
      }) 
    ); 

Answer 2

utilisation ci-dessous pour le code de dialogue d'alerte ouverte;

holder.item1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       AlertDialog.Builder builder1 = new AlertDialog.Builder(getActivity()); 
       builder1.setMessage("Do you want to remove ?"); 
       builder1.setCancelable(true); 

       builder1.setPositiveButton(
         "Yes", 
         new DialogInterface.OnClickListener() { 
          public void onClick(DialogInterface dialog, int id) 
          {       
         //Do your code... 
           } 
         }); 

       builder1.setNegativeButton(
         "No", 
         new DialogInterface.OnClickListener() { 
          public void onClick(DialogInterface dialog, int id) { 
           dialog.cancel(); 
          } 
         }); 

       AlertDialog alert11 = builder1.create(); 
       alert11.show(); 
      } 
     }); 

Answer 3

problème

est ici, vous devez aussi passer context au constructeur de l'adaptateur comme indiqué ci-dessous

public SearchResultAdapter(List<Searchresult> resultList , Context context) { 
    this.resultList = resultList; 
    this.context = context 
    } 

dans votre activité où vous lancez l'utilisation de l'adaptateur comme ci-dessous

SearchResultAdapter madapter = new SearchResultAdapter (List, this); 

puis dans votre onBindViewHolder

@Override 
public void onBindViewHolder(final MyViewHolder holder, int position) { 
    Searchresult result = resultList.get(position); 
    holder.item1.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      //pass the 'context' here 
      AlertDialog.Builder alertDialog = new AlertDialog.Builder(context); 
      alertDialog.setTitle("Your title"); 
      alertDialog.setMessage("your message "); 
      alertDialog.setPositiveButton("CANCEL", new DialogInterface.OnClickListener() { 
       @Override 
       public void onClick(DialogInterface dialog, int which) { 
        dialog.cancel(); 
       } 
      }); 
      alertDialog.setNegativeButton("YES", new DialogInterface.OnClickListener() { 
       @Override 
       public void onClick(DialogInterface dialog, int which) { 

        // DO SOMETHING HERE 

       } 
      }); 

      AlertDialog dialog = alertDialog.create(); 
      dialog.show(); 
     } 
    }); 
}