RecyclerView.Adapter onClick

Question

Ich habe Probleme bei der Implementierung view.OnClickListener in meinem RecyclerView.Adapter. Ich versuche, Multi-Panel-Layout (Landscape Tablet Layout-Version mit RecyclerView und Detail nebeneinander) zu implementieren. Ich habe bisher erschaffen diese Activity:

public class MovieListActivity extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_movie_list); 
     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     setSupportActionBar(toolbar); 

     MovieListFragment movieListFragment = new MovieListFragment(); 
     FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); 
     transaction.replace(R.id.recycler_view_fragment, movieListFragment); 
     transaction.addToBackStack(null); 

     transaction.commit(); 

    } 

} 

die beginnt ein Fragment:

public class MovieListFragment extends Fragment { 

    @BindView(R.id.recyclerView) 
    RecyclerView mRecyclerView; 
    private MoviesAdapter mAdapter; 

    public MovieListFragment() { 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     mAdapter = new MoviesAdapter(getContext()); 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.fragment_movie_list, container, false); 
     ButterKnife.bind(this,view); 
     mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext())); 
     mRecyclerView.setAdapter(mAdapter); 
     return view; 
    } 

    @Override 
    public void onStart() { 
     super.onStart(); 
     getPopularMovies(); 
    } 

    private void getPopularMovies() { 
     RestAdapter restAdapter = new RestAdapter.Builder() 
       .setEndpoint("http://api.themoviedb.org") 
       .setLogLevel(RestAdapter.LogLevel.FULL) 
       .build(); 
     MoviesApiService service = restAdapter.create(MoviesApiService.class); 
     service.getPopularMovies(new Callback<Movie.MovieResult>() { 
      @Override 
      public void success(Movie.MovieResult movieResult, Response response) { 
       mAdapter.setMovieList(movieResult.getResults()); 
      } 

      @Override 
      public void failure(RetrofitError error) { error.printStackTrace(); } 
     }); 
    } 

    @Override 
    public void onAttach(Context context) { 
     super.onAttach(context); 

    } 

    @Override 
    public void onDetach() { 
     super.onDetach(); 
    } 

} 

, welche Anrufe die RecyclerView.Adapter:

public class MoviesAdapter extends RecyclerView.Adapter<MovieViewHolder> { 

    private List<Movie> mMovieList; 
    private LayoutInflater mInflater; 
    private Context mContext; 

    public MoviesAdapter(Context context) { 
     this.mContext = context; 
     this.mInflater = LayoutInflater.from(context); // 
    } 

    @Override 
    public MovieViewHolder onCreateViewHolder(ViewGroup parent, final int viewType) { 
     View view = mInflater.inflate(R.layout.movie_row_item, parent, false); 
     final MovieViewHolder viewHolder = new MovieViewHolder(view); 
     view.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 

       int position = viewHolder.getAdapterPosition(); 
       Intent intent = new Intent(mContext, MovieDetailActivity.class); 
       intent.putExtra(MovieDetailActivity.MOVIE_EXTRA, mMovieList.get(position)); 
       mContext.startActivity(intent); 


      } 
     }); 
     return viewHolder; 
    } 

    @Override 
    public void onBindViewHolder(MovieViewHolder holder, int position) { 
     Movie movie = mMovieList.get(position); 
     Picasso.with(mContext) 
       .load(movie.getPoster()) 
       .placeholder(R.color.colorAccent) 
       .into(holder.thumbnail); 
     holder.movieTitle.setText(movie.getTitle()); 
     holder.rating.setText(movie.getRating()); 

    } 

    @Override 
    public int getItemCount() { 
     return (mMovieList == null) ? 0 : mMovieList.size(); 
    } 

    public void setMovieList(List<Movie> movieList) { 
     this.mMovieList = new ArrayList<>(); 
     this.mMovieList.addAll(movieList); 
     notifyDataSetChanged(); 
    } 
} 

Hier in onClick Ich muss entscheiden, ob ein Start neue Activity (wie in meinem Code) oder aktualisieren Inhalt des Details Fragment (in meinem Tablet-Landscape-Layout). Nach this link, sollten Sie basiert auf Fakten entscheiden, ob Ihr DetailFragment ist = null in Tätigkeit wie folgt:

public void onItemSelected(int position) { 
     DisplayFragment displayFrag = (DisplayFragment) getFragmentManager() 
            .findFragmentById(R.id.display_frag); 
     if (displayFrag == null) { 
      // DisplayFragment (Fragment B) is not in the layout (handset layout), 
      // so start DisplayActivity (Activity B) 
      // and pass it the info about the selected item 
      Intent intent = new Intent(this, DisplayActivity.class); 
      intent.putExtra("position", position); 
      startActivity(intent); 
     } else { 
      // DisplayFragment (Fragment B) is in the layout (tablet layout), 
      // so tell the fragment to update 
      displayFrag.updateContent(position); 
     } 
    } 

Aber ich bin nicht in der Lage Adapter zu überprüfen. Jede Hilfe würde sehr geschätzt werden! Danke.

Answer 1

die benutzerdefinierte Schnittstelle Klick-Aktion für Sie erstellt

public class MoviesAdapter erstreckt RecyclerView.Adapter die Steuerung in Fragment Klasse

Ich hoffe, es werden Werke erhalten {

MoviesAdapterCallback moviesAdapterCallback; 
private List<Movie> mMovieList; 
private LayoutInflater mInflater; 
private Context mContext; 

public MoviesAdapter(Context context,MoviesAdapterCallback moviesAdapterCallback) { 
    this.mContext = context; 
    this.moviesAdapterCallback =moviesAdapterCallback; 
    this.mInflater = LayoutInflater.from(context); // 
} 

@Override 
public MovieViewHolder onCreateViewHolder(ViewGroup parent, final int viewType) { 
    View view = mInflater.inflate(R.layout.movie_row_item, parent, false); 
    final MovieViewHolder viewHolder = new MovieViewHolder(view); 
    view.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 

      /* int position = viewHolder.getAdapterPosition(); 
      Intent intent = new Intent(mContext, MovieDetailActivity.class); 
      intent.putExtra(MovieDetailActivity.MOVIE_EXTRA, mMovieList.get(position)); 
      mContext.startActivity(intent); 

*/moviesAdapterCallback .MovieClicked (anzeigen);

 } 
    }); 
    return viewHolder; 
} 

@Override 
public void onBindViewHolder(MovieViewHolder holder, int position) { 
    Movie movie = mMovieList.get(position); 
    Picasso.with(mContext) 
      .load(movie.getPoster()) 
      .placeholder(R.color.colorAccent) 
      .into(holder.thumbnail); 
    holder.movieTitle.setText(movie.getTitle()); 
    holder.rating.setText(movie.getRating()); 

} 

@Override 
public int getItemCount() { 
    return (mMovieList == null) ? 0 : mMovieList.size(); 
} 

public void setMovieList(List<Movie> movieList) { 
    this.mMovieList = new ArrayList<>(); 
    this.mMovieList.addAll(movieList); 
    notifyDataSetChanged(); 
} 

public interface MoviesAdapterCallback { 
    void MovieClicked(View view); 
} 

}

in Fragment Klasse

public class MovieListFragment erweitert Fragment {

@BindView(R.id.recyclerView) 
RecyclerView mRecyclerView; 
private MoviesAdapter mAdapter; 

public MovieListFragment() { 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 


} 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    View view = inflater.inflate(R.layout.fragment_movie_list, container, false); 
    ButterKnife.bind(this,view); 
    mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext())); 
    mAdapter = new MoviesAdapter(getContext(), new MoviesAdapter.MoviesAdapterCallback(){ 
     @Override 
     public void MovieClicked(View view) { 
      DisplayFragment displayFrag = (DisplayFragment) getFragmentManager() 
        .findFragmentById(R.id.display_frag); 
      if (displayFrag == null) { 
       // DisplayFragment (Fragment B) is not in the layout (handset layout), 
       // so start DisplayActivity (Activity B) 
       // and pass it the info about the selected item 
       Intent intent = new Intent(this, DisplayActivity.class); 
       intent.putExtra("position", position); 
       startActivity(intent); 
      } else { 
       // DisplayFragment (Fragment B) is in the layout (tablet layout), 
       // so tell the fragment to update 
       displayFrag.updateContent(position); 
      } 
     } 
    }); 
    mRecyclerView.setAdapter(mAdapter); 
    return view; 
} 

@Override 
public void onStart() { 
    super.onStart(); 
    getPopularMovies(); 
} 

private void getPopularMovies() { 
    RestAdapter restAdapter = new RestAdapter.Builder() 
      .setEndpoint("http://api.themoviedb.org") 
      .setLogLevel(RestAdapter.LogLevel.FULL) 
      .build(); 
    MoviesApiService service = restAdapter.create(MoviesApiService.class); 
    service.getPopularMovies(new Callback<Movie.MovieResult>() { 
     @Override 
     public void success(Movie.MovieResult movieResult, Response response) { 
      mAdapter.setMovieList(movieResult.getResults()); 
     } 

     @Override 
     public void failure(RetrofitError error) { error.printStackTrace(); } 
    }); 
} 

@Override 
public void onAttach(Context context) { 
    super.onAttach(context); 

} 

@Override 
public void onDetach() { 
    super.onDetach(); 
} 

}