Android RecyclerView example using view hodelr in adapter
(For using multiple layout in RecyclerView check this tutorial )
Add ‘com.android.support:recyclerview‘ in Gradle dependencies and sync it
my app/build.gradle file
apply plugin: 'com.android.application' android { compileSdkVersion 24 buildToolsVersion "24.0.1" defaultConfig { applicationId "samples.bm.com.myapplication" minSdkVersion 14 targetSdkVersion 24 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:24.2.0' compile 'com.android.support:recyclerview-v7:24.2.0' }
MainActivity
package samples.bm.com.myapplication; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.widget.Toast; import java.util.ArrayList; public class MainActivity extends AppCompatActivity implements MyMediatorInterface { private MyAdapter mAdapter; private ArrayList<UserModel> usersList; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); usersList = new ArrayList<>(); usersList.add(new UserModel("Jos", "123546567")); usersList.add(new UserModel("Kiran", "456546456")); usersList.add(new UserModel("Manu", "5678")); usersList.add(new UserModel("Roy", "67443453")); usersList.add(new UserModel("Musthu", "456353")); usersList.add(new UserModel("Jaffer", "4644")); RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rv_my_recycler_view); recyclerView.setHasFixedSize(true); LinearLayoutManager layoutManager = new LinearLayoutManager(this); recyclerView.setLayoutManager(layoutManager); mAdapter = new MyAdapter(usersList, this); recyclerView.setAdapter(mAdapter); } @Override public void userItemClick(int pos) { Toast.makeText(MainActivity.this, "Clicked User : " + usersList.get(pos).name, Toast.LENGTH_SHORT).show(); } }
Model
package samples.bm.com.myapplication; public class UserModel { public String name; public String phone; public UserModel(String name, String phone) { this.name = name; this.phone = phone; } }
Adapter
package samples.bm.com.myapplication; import android.content.Context; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.TextView; import java.lang.ref.WeakReference; import java.util.ArrayList; public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> { ArrayList<UserModel> mUsersList; WeakReference<Context> mContextWeakReference; public MyAdapter(ArrayList<UserModel> usersList, Context context) { mUsersList = usersList; this.mContextWeakReference = new WeakReference<Context>(context); } @Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { Context context = mContextWeakReference.get(); if (context != null) { View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_user_item, parent, false); return new MyViewHolder(itemView, context); } return null; } @Override public void onBindViewHolder(final MyViewHolder holder, int position) { Context context = mContextWeakReference.get(); if (context == null) { return; } UserModel currentUser = mUsersList.get(position); holder.TvName.setText(currentUser.name); holder.TvPhone.setText(currentUser.phone); } @Override public int getItemCount() { return mUsersList.size(); } //holder public static class MyViewHolder extends RecyclerView.ViewHolder { public TextView TvName, TvPhone; public LinearLayout ll; public MyViewHolder(View itemView, final Context context) { super(itemView); TvName = (TextView) itemView.findViewById(R.id.tv_name); TvPhone = (TextView) itemView.findViewById(R.id.tv_phone); ll = (LinearLayout) itemView.findViewById(R.id.ll_layout); ll.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { ((MainActivity) context).userItemClick(getAdapterPosition()); } }); } } }
Interface:
package samples.bm.com.myapplication; public interface MyMediatorInterface { void userItemClick(int pos); }
Layouts
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="samples.bm.com.myapplication.MainActivity" android:orientation="vertical"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Hello World!" /> <android.support.v7.widget.RecyclerView android:id="@+id/rv_my_recycler_view" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>
Recycler View row
<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:id="@+id/ll_layout" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="20px"> <TextView android:id="@+id/tv_name" android:layout_width="0dp" android:layout_weight="1" android:layout_height="wrap_content" /> <TextView android:id="@+id/tv_phone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" /> </LinearLayout>
Out Put
If you want to add data to RecyclerView add data into the Array List (eg:- usersList.add(new UserModel(“new name”, “345”)); and you can call the adapter function notifyItemInserted() or notifyDatasetChanged().
mAdapter.notifyItemInserted(position);
mAdapter.notifyDataSetChanged(); //this function you can call with any activity (inset,update,delete) but it is expensive
While editing edit the value in array list and call notifyItemChanged(position), while deleting delete the position from array list and call notifyItemRemoved(position)
Hey… Thanks for your post.
it helped me alot.. i got stuck till 2 days and not get any way of getting value from recyclerview to edittext. but by using your method i solved my problem.
Thanks alot.