recyclerView is not responding-CodePudding

package com.crowthweb.newsin;

import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.LinearLayoutManager;

public class MainActivity extends AppCompatActivity {

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

    recyclerView.layoutManager = new LinearLayoutManager(MainActivity.this);

}

}

CodePudding user response：

You need to setAdapter to that RecyclerView. Then, it will work only. Also, don't forget to initialize the recyclerView first.

CodePudding user response：

You need an Adapter and a LayoutManager to visible RecyclerView

        RecyclerView recyclerView;
        MessageAdapter messageAdapter;
        LinearLayoutManager layoutManager;
        List<Message> messageList;    
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_chat);

        recyclerView  = findViewById(R.id.my_rycler_view);
        messageList = new Arraylist<>();
        messageAdapter = new MessageAdapter(this, messageList);
        layoutManager = new 
        LinearLayoutManager(this,RecyclerView.VERTICAL,false);
    
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setAdapter(messageAdapter);
    }

CodePudding user response：

In xml :

   <androidx.recyclerview.widget.RecyclerView
        android:id="@ id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />

In java :

 binding.recyclerView.setAdapter(new MyAdapter(this, myList);