RecyclerViewは、これは私のアダプタクラスですNextActivity

Question

にデータを送信することを拒否した

public class NtindaCinemaAdapter extends RecyclerView.Adapter<NtindaCinemaViewHolders>{ 
    private String url="http://10.0.2.2/UgandaEntertainment/Ntinda/NtindaPics/"; 
    private List<ItemObjects> itemList = null; 
    private Context context; 


    private ArrayList<ItemObjects> arraylist; 
    public NtindaCinemaAdapter(Context context, List<ItemObjects> itemList) { 
     this.itemList = itemList; 
     this.context = context; 
    } 

    @Override 
    public NtindaCinemaViewHolders onCreateViewHolder(ViewGroup parent, int viewType) { 

     View layoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.ntinda_cinema_list, parent,false); 
     NtindaCinemaViewHolders rcv = new NtindaCinemaViewHolders(layoutView,context); 
     return rcv; 
    } 

    @Override 
    public void onBindViewHolder(NtindaCinemaViewHolders holder, int position) { 
     ItemObjects feedItem = itemList.get(position); 
       ViewGroup parent; 
     //Download image using picasso library 

     Picasso.with(context).load(url+feedItem.getPhoto()) 
       .error(R.drawable.placeholder). 
       resize(500,500) 
       .placeholder(R.drawable.placeholder) 

       .into(holder.moviepic); 

     holder.moviename.setText(itemList.get(position).getMovieName()); 
    } 

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

問題は、私は同じ問題にここに掲載の各ポストに従うことをしようとした、ですが、私は持っていないところこれが私のViewHolderClassです正解を得ました。
OnItemClickListener機能を持つlistViewのようにしたいと思います。
そして、それはこれはこれはこれは、それが

を表示するエラーメッセージです

package oerrride.we.huzykamz.ugentapp; 

public class ItemObjects { 
    private String CinemaName; 
    private String CinemaxPhoto; 
    private String contact; 
    private String longitude; 
    private String latitude; 
    private String MovieName; 
    private String Synopsis; 
    private String Others; 
    private String photo; 
    private String Monday; 
    private String Tuesday; 
    private String Wednesday; 
    private String Thursday; 
    private String Friday; 
    private String Saturday; 
    private String Sunday; 
    private String ActorsName; 
    private String ActorsPhoto; 


    public String getCinemaName() { 
     return CinemaName; 
    } 

    public void setCinemaName(String cinemaName) { 
     CinemaName = cinemaName; 
    } 

    public String getCinemaxPhoto() { 
     return CinemaxPhoto; 
    } 

    public void setCinemaxPhoto(String cinemaxPhoto) { 
     CinemaxPhoto = cinemaxPhoto; 
    } 

    public String getContact() { 
     return contact; 
    } 

    public void setContact(String contact) { 
     this.contact = contact; 
    } 

    public String getLongitude() { 
     return longitude; 
    } 

    public void setLongitude(String longitude) { 
     this.longitude = longitude; 
    } 

    public String getLatitude() { 
     return latitude; 
    } 

    public void setLatitude(String latitude) { 
     this.latitude = latitude; 
    } 

    public String getMovieName() { 
     return MovieName; 
    } 

    public void setMovieName(String movieName) { 
     MovieName = movieName; 
    } 

    public String getSynopsis() { 
     return Synopsis; 
    } 

    public void setSynopsis(String synopsis) { 
     Synopsis = synopsis; 
    } 

    public String getOthers() { 
     return Others; 
    } 

    public void setOthers(String others) { 
     Others = others; 
    } 

    public String getPhoto() { 
     return photo; 
    } 

    public void setPhoto(String photo) { 
     this.photo = photo; 
    } 

    public String getMonday() { 
     return Monday; 
    } 

    public void setMonday(String monday) { 
     Monday = monday; 
    } 

    public String getTuesday() { 
     return Tuesday; 
    } 

    public void setTuesday(String tuesday) { 
     Tuesday = tuesday; 
    } 

    public String getWednesday() { 
     return Wednesday; 
    } 

    public void setWednesday(String wednesday) { 
     Wednesday = wednesday; 
    } 

    public String getThursday() { 
     return Thursday; 
    } 

    public void setThursday(String thursday) { 
     Thursday = thursday; 
    } 

    public String getFriday() { 
     return Friday; 
    } 

    public void setFriday(String friday) { 
     Friday = friday; 
    } 

    public String getSaturday() { 
     return Saturday; 
    } 

    public void setSaturday(String saturday) { 
     Saturday = saturday; 
    } 

    public String getSunday() { 
     return Sunday; 
    } 

    public void setSunday(String sunday) { 
     Sunday = sunday; 
    } 

    public String getActorsName() { 
     return ActorsName; 
    } 

    public void setActorsName(String actorsName) { 
     ActorsName = actorsName; 
    } 

    public String getActorsPhoto() { 
     return ActorsPhoto; 
    } 

    public void setActorsPhoto(String actorsPhoto) { 
     ActorsPhoto = actorsPhoto; 
    } 
} 

私のモデルクラスである

package oerrride.we.huzykamz.ugentapp; 

import android.content.Intent; 
import android.os.Bundle; 
import android.support.design.widget.FloatingActionButton; 
import android.support.design.widget.Snackbar; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.Toolbar; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.Window; 
import android.view.WindowManager; 
import android.widget.ImageView; 
import android.widget.TextView; 

import com.squareup.picasso.Picasso; 

public class MovieScrollingActivity extends AppCompatActivity { 

    TextView synpsis_txt; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.activity_scrolling); 

     getSupportActionBar().setDisplayShowHomeEnabled(false); 
     android.support.v7.app.ActionBar actionBar = getSupportActionBar(); 
     actionBar.setDisplayHomeAsUpEnabled(true); 
     actionBar.hide(); 

     synpsis_txt = (TextView) findViewById(R.id.synopsis_txt); 

     Bundle bundle = getIntent().getExtras(); 
     synpsis_txt.setText(bundle.getString(NtindaCinemaViewHolders.KEY_SYNOPSIS)); 

     FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab2); 
     fab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) 
         .setAction("Action", null).show(); 
      } 
     }); 


    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 
} 

私NextActivityクラスです

package oerrride.we.huzykamz.ugentapp; 

import android.content.Context; 
import android.content.Intent; 
import android.os.Bundle; 
import android.support.v7.widget.RecyclerView; 
import android.view.GestureDetector; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

import java.io.Serializable; 
import java.util.List; 

import adapters.NtindaCinemaAdapter; 


public class NtindaCinemaViewHolders extends RecyclerView.ViewHolder { 

    public TextView moviename; 
    public ImageView moviepic; 
    public static String KEY_SYNOPSIS="Synopsis"; 
    View root; 
    private List<ItemObjects> itemList1 = null; 


    public NtindaCinemaViewHolders(final View itemView, final Context c) { 
     super(itemView); 
     root = itemView; 

     root.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
      /* Toast.makeText(c,"Clicked"+getPosition(),Toast.LENGTH_LONG).show();*/ 

       ItemObjects feedItem = (ItemObjects) v.getTag(); 
       Intent intent = new Intent(c, MovieScrollingActivity.class); 

       intent.putExtra(KEY_SYNOPSIS, feedItem.getSynopsis()); 
       c.startActivity(intent); 

      } 
     }); 


     moviename = (TextView) itemView.findViewById(R.id.ntinda_cinema_txt); 
     moviepic = (ImageView) itemView.findViewById(R.id.ntinda_cinema_photo); 
    } 
} 

NextActivity

にデータを送信します

08-02 11:49:12.123 1775-1775/? E/AndroidRuntime: FATAL EXCEPTION: main 
Process: oerrride.we.huzykamz.ugentapp, PID: 1775 
java.lang.NullPointerException 
    at oerrride.we.huzykamz.ugentapp.NtindaCinemaViewHolders$1.onClick(NtindaCinemaViewHolders.java:52) 
    at android.view.View.performClick(View.java:4438) 
    at android.view.View$PerformClick.run(View.java:18422) 
    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:5001) 
    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:785) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) 
    at dalvik.system.NativeStart.main(Native Method) 

Answer 1

クリックリスナーをアダプタに移動して、オブジェクトをarraylistから取得できるようにする必要があると思います。

ビューにはタグが設定されていないため、v.getTag();はヌルを戻していました。

@Override 
public void onBindViewHolder(NtindaCinemaViewHolders holder, int position) { 
    final ItemObjects feedItem = itemList.get(position); 

    holder.root.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      Intent intent = new Intent(NtindaCinemaAdapter.this.context, MovieScrollingActivity.class); 
      intent.putExtra(NtindaCinemaViewHolders.KEY_SYNOPSIS, feedItem.getSynopsis()); 

      c.startActivity(intent); 
     } 
    }); 

    //Download image using picasso library 
    Picasso.with(context).load(url+feedItem.getPhoto()) 
      .error(R.drawable.placeholder). 
      resize(500,500) 
      .placeholder(R.drawable.placeholder) 
      .into(holder.moviepic); 

    holder.moviename.setText(feedItem.getMovieName()); 
} 

Answer 2

開始アクティビティ

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);