RecyclerView Swipe Item

RecyclerView Swipe to Dismiss
activity_layout

<android.support.v7.widget.RecyclerView 

 xmlns:android="http://schemas.android.com/apk/res/android" 

 android:id="@+id/movie_recycler_view" 

 android:layout_width="match_parent" 

 android:layout_height="match_parent"/>

list_item_movie layout

<?xml version="1.0" encoding="utf-8"?>

 <android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android" 

 xmlns:card_view="http://schemas.android.com/apk/res-auto" 

 android:layout_width="match_parent" 

 android:layout_height="wrap_content" 

 android:layout_margin="8dp" 

 card_view:cardCornerRadius="2dp">

    <TextView 

 android:id="@+id/movie_name" 

 android:layout_width="match_parent" 

 android:layout_height="wrap_content" 

 android:textAppearance="?android:attr/textAppearanceMedium" 

 android:padding="8dp"/>
    
</android.support.v7.widget.CardView>

build.gradle

apply plugin: 'com.android.application'
android {
    compileSdkVersion 23 

 buildToolsVersion "23.0.2"
    defaultConfig {
        applicationId "map.conghuy.com.myapplication" 

 minSdkVersion 15 

 targetSdkVersion 23 

 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-v7:23.3.0' 

 compile 'com.android.support:design:23.3.0' 

 compile 'com.android.support:cardview-v7:23.0.0'}
 

MovieTouchHelper

public class MovieTouchHelper extends ItemTouchHelper.SimpleCallback {
    private MovieAdapter mMovieAdapter;

    public MovieTouchHelper(MovieAdapter movieAdapter){
        super(ItemTouchHelper.UP | ItemTouchHelper.DOWN, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT);
        this.mMovieAdapter = movieAdapter;
    }

    @Override 

 public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        mMovieAdapter.swap(viewHolder.getAdapterPosition(), target.getAdapterPosition());
        return true;
    }

    @Override 

 public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        mMovieAdapter.remove(viewHolder.getAdapterPosition());
    }
}
 

MovieAdapter

public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.ViewHolder> {
    private Context mContext;
    private List<Movie> mMovies;

    public MovieAdapter(Context context, List<Movie> movies){
        this.mContext = context;
        this.mMovies = movies;
    }

    @Override 

 public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new ViewHolder(LayoutInflater.from(mContext).inflate(R.layout.list_item_movie, parent, false));
    }

    @Override 

 public void onBindViewHolder(ViewHolder holder, int position) {
        holder.bindMovie(mMovies.get(position));
    }

    @Override 

 public int getItemCount() {
        return mMovies.size();
    }

    public void remove(int position) {
        mMovies.remove(position);
        notifyItemRemoved(position);
    }

    public void swap(int firstPosition, int secondPosition){
        Collections.swap(mMovies, firstPosition, secondPosition);
        notifyItemMoved(firstPosition, secondPosition);
    }

    public class ViewHolder extends RecyclerView.ViewHolder{
        public final TextView movieNameTextView;

        public ViewHolder(View view){
            super(view);
            movieNameTextView = (TextView) view.findViewById(R.id.movie_name);
        }

        public void bindMovie(Movie movie){
            this.movieNameTextView.setText(movie.getName());
        }
    }
}
 

Movie

public class Movie {
    private String name;

    public Movie(String name){
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}
 

MainActivity

public class MainActivity extends AppCompatActivity {

    @Override 

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

        // Setup RecyclerView 

 RecyclerView movieRecyclerView = (RecyclerView) findViewById(R.id.movie_recycler_view);
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
        movieRecyclerView.setLayoutManager(linearLayoutManager);

        // Setup Adapter 

 MovieAdapter movieAdapter = new MovieAdapter(this, getMovies());
        movieRecyclerView.setAdapter(movieAdapter);

        // Setup ItemTouchHelper 

 ItemTouchHelper.Callback callback = new MovieTouchHelper(movieAdapter);
        ItemTouchHelper helper = new ItemTouchHelper(callback);
        helper.attachToRecyclerView(movieRecyclerView);
    }

    private List<Movie> getMovies(){
        List<Movie> movieList = new ArrayList<>();
        movieList.add(new Movie("Harry Potter"));
        movieList.add(new Movie("Twilight"));
        movieList.add(new Movie("Star Wars"));
        movieList.add(new Movie("Star Trek"));
        movieList.add(new Movie("Galaxy Quest"));
        return movieList;
    }
}