How to let OnClick in viewholder recyclerview adapter Adapter call Activity's function

Question

How to let OnClick in view holder recyclerview adapter call Activity's function

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

            final Jour jour = listItems.get(position);
            holder.datenumber1.setText(jour.getDate());
            holder.datetext1.setText(jour.getJour());
            holder.object.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                            Toast.makeText(context,jour.getDate().toString(),Toast.LENGTH_LONG).show();


                            ((Acceuil) context).loadrecyclerviewdata2(jour.getDate().toString());
                    }
            });


    }

LOGS

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.karim.tkwira, PID: 29380 java.lang.ClassCastException: android.app.Application cannot be cast to com.example.karim.tkwira.Acceuil at com.example.karim.tkwira.Jour_adapter$1.onClick(Jour_adapter.java:51) at android.view.View.performClick(View.java:4633) at android.view.View$PerformClick.run(View.java:19270) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5476) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099) at dalvik.system.NativeStart.main(Native Method) I/Process: Sending signal. PID: 29380 SIG: 9 Application terminated.

 package com.example.karim.tkwira; import android.app.ProgressDialog; import android.content.SharedPreferences; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import com.android.volley.AuthFailureError; import com.android.volley.Request; import com.android.volley.RequestQueue; import com.android.volley.Response; import com.android.volley.VolleyError; import com.android.volley.toolbox.StringRequest; import com.android.volley.toolbox.Volley; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.Map; public class Acceuil extends AppCompatActivity { public static final String SESSION="session"; private String email ; private List<Jour> listItems; private List<Heure> listItems2; RecyclerView joursliste; RecyclerView heuresliste; private static final String URL_DAY="http://192.168.1.3/takwira/gettime.php"; private static final String URL_DAY2="http://192.168.1.3/takwira/afficher.php"; private RecyclerView.Adapter adapter ; private RecyclerView.Adapter adapter2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_acceuil); SharedPreferences profil =getSharedPreferences(SESSION,0); joursliste=(RecyclerView)findViewById(R.id.jourslist); heuresliste=(RecyclerView)findViewById(R.id.heurslist); email= profil.getString("email",""); listItems= new ArrayList<>(); listItems2= new ArrayList<>(); loadrecyclerviewdata(); loadrecyclerviewdata2("02-06-2300"); } public void loadrecyclerviewdata2(final String ch1){ final ProgressDialog progressDialog = new ProgressDialog(this); progressDialog.setMessage("get data ..."); progressDialog.show(); StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_DAY2, new Response.Listener<String>() { @Override public void onResponse(String response) { progressDialog.dismiss(); try { JSONObject jsonObject = new JSONObject(response); JSONArray array = jsonObject.getJSONArray("Heures"); for (int i=0;i<array.length();i++){ JSONObject o =array.getJSONObject(i); Heure heure = new Heure(o.getString("heure")); listItems2.add(heure); } adapter2 = new Heure_adapter(listItems2,getApplicationContext()); heuresliste.setAdapter(adapter2); } catch (JSONException e) { e.printStackTrace(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { Toast.makeText(getApplicationContext(),"errrrrreur",Toast.LENGTH_LONG).show(); progressDialog.dismiss(); } }){ @Override protected Map<String, String> getParams() { Map<String, String> params = new HashMap<String, String>(); params.put("day",ch1); return params; } }; RequestQueue requestQueue = Volley.newRequestQueue(this); requestQueue.add(stringRequest); } private void loadrecyclerviewdata(){ final ProgressDialog progressDialog = new ProgressDialog(this); progressDialog.setMessage("wait..."); progressDialog.show(); StringRequest stringRequest = new StringRequest(Request.Method.GET, URL_DAY, new Response.Listener<String>() { @Override public void onResponse(String response) { progressDialog.dismiss(); try { JSONObject jsonObject = new JSONObject(response); JSONArray array = jsonObject.getJSONArray("days"); for (int i=0;i<array.length();i++){ JSONObject o =array.getJSONObject(i); Jour jour = new Jour( o.getString("journombre"),o.getString("jourtext")); listItems.add(jour); } adapter = new Jour_adapter(listItems,getApplicationContext()); joursliste.setAdapter(adapter); } catch (JSONException e) { e.printStackTrace(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { Toast.makeText(getApplicationContext(),"errrrrreur",Toast.LENGTH_LONG).show(); progressDialog.dismiss(); } }); RequestQueue requestQueue = Volley.newRequestQueue(this); requestQueue.add(stringRequest); } } 

Answer 1

//In RecyclerViewAdapter
public DataObjectHolder(View itemView) {
        super(itemView);

//after assigning ids

object.setOnClickListener(this);


//In your Activity
@Override
public void onResume() {
    super.onResume();
    Log.d(TAG, "onResume");

    ((YourRecyclerViewAdapter) mAdapter).setOnItemClickListener(new YourRecyclerViewAdapter
            .MyClickListener() {
        @Override
        public void onItemClick(int position, View v) {
            int id = v.getId();
            if (id == R.id.YOUR_OBJECT_ID) {
                Jour jour = listItems.get(position);
                Toast.makeText(MainActivity.this,"position ="+jour.getDate(),Toast.LENGTH_LONG).show();
            }
        }
    });
}