カスタムアダプタを使用したListViewを持つフラグメントの表示エラーが見つかりません

Question

親アクティビティ（Aなど）からオブジェクトを取得するフラグメントを持つアクティビティ（たとえばB）があります。フラグメントにはリストビューがあり、アダプターの助けを借りてリストビューを作成したい。私は親の活動から正常にデータを取得しますが、アプリケーションは、ビューが見つからないとクラッシュします。 は、ここでは、コードです：

public class MovieDetailsActivity extends AppCompatActivity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_movie_detail); 
    Bundle movieDetails = new Bundle(); 
    /**get the Movie's Object from the parent Activity**/ 
    Movie movie = getIntent().getParcelableExtra("movie"); 
    movieDetails.putParcelable("movie", movie); 

    if (savedInstanceState == null) { 
     MovieDetailsFragment defaultMovieFragment = new MovieDetailsFragment(); 
     defaultMovieFragment.setArguments(movieDetails); 
     getSupportFragmentManager().beginTransaction() 
       .add(R.id.container1, defaultMovieFragment) 
       .commit(); 

    } 
} 
} 

フラグメント：

public class MovieDetailsFragment extends Fragment { 

public MovieDetailsFragment() { 
    // Required empty public constructor 
} 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    View rootView = inflater.inflate(R.layout.fragment_movie_detail, container, false); 

    Bundle bundle = getArguments(); 

    if ((bundle != null)) { 
     Movie movie = getArguments().getParcelable("movie"); 
     ArrayList<Movie> movieArrayList = new ArrayList<>(); 
     movieArrayList.add(movie); 

     // Create an {@link WordAdapter}, whose data source is a list of {@link Word}s. The 
     // adapter knows how to create list items for each item in the list. 
     MovieDetailsAdapter adapter = new MovieDetailsAdapter(getActivity(), movieArrayList); 

     // Find the {@link ListView} object in the view hierarchy of the {@link Activity}. 
     // There should be a {@link ListView} with the view ID called list, which is declared in the 
     // word_list.xml layout file. 
     ListView listView = (ListView) rootView.findViewById(R.id.list_item); 

     // Make the {@link ListView} use the {@link WordAdapter} we created above, so that the 
     // {@link ListView} will display list items for each {@link Word} in the list. 
     listView.setAdapter(adapter); 
    } 

    return rootView; 
} 
} 

アダプタ：は

今を更新している

活動Bは、MovieDetailsActivityと呼ばれます

public class MovieDetailsAdapter extends ArrayAdapter<Movie> { // Store a member variable for the movies // private static Movie mMovie; // Store the context for easy access private Context mContext; // Pass in the movies array into the constructor public MovieDetailsAdapter(Context context, ArrayList<Movie> movies) { super(context, 0, movies); //mMovie = movies; mContext = context; } // View lookup cache private static class ViewHolder { TextView textView; ImageView imageView; } public View getView(int position, View convertView, ViewGroup parent) { Movie mMovie = getItem(position); // Check if an existing view is being reused, otherwise inflate the view ViewHolder viewHolder; // view lookup cache stored in tag if (convertView == null) { /* If there's no view to re-use, inflate a brand new view for row */ viewHolder = new ViewHolder(); LayoutInflater inflater = LayoutInflater.from(mContext); convertView = inflater.inflate(R.layout.activity_movie_details, parent, false); /*Find the TextView and ImageView and set them on the VIewHolder*/ viewHolder.textView = (TextView) convertView.findViewById(R.id.movie_detail_title_text_view); viewHolder.imageView = (ImageView) convertView.findViewById(R.id.movie_detail_title_image_view); // Cache the viewHolder object inside the fresh view convertView.setTag(viewHolder); } else { // View is being recycled, retrieve the viewHolder object from tag viewHolder = (ViewHolder) convertView.getTag(); } if (mMovie != null) { // Populate the data into the template view using the data object viewHolder.textView.setText(mMovie.getMovieTitle().toString()); String url = "https://image.tmdb.org/t/p/w500/" + mMovie.getMoviePosterPath().toString(); Picasso.with(mContext) .load(url) .placeholder(R.mipmap.ic_launcher) .into(viewHolder.imageView); } return convertView; } } 

activity_movie_details.xmlはでframeLayoutは、fragment_movie_detail.xmlは、リストビューとitem_movie_detail.xmlとのLinearLayoutを有しのTextViewとanImageViewとのLinearLayoutを有しています。

注：私はアダプターを台無しにしていますが、ケースを正しく処理する方法を理解していません。

更新：（アダプタ更新後） Logcatメッセージ：

FATAL EXCEPTION: main 
                     Process: me.abhishekraj.showmyshow, PID: 17718 
                     java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference 
                      at me.abhishekraj.showmyshow.MovieDetailsAdapter.getView(MovieDetailsAdapter.java:61) 
                      at android.widget.AbsListView.obtainView(AbsListView.java:2346) 
                      at android.widget.ListView.makeAndAddView(ListView.java:1875) 
                      at android.widget.ListView.fillDown(ListView.java:702) 
                      at android.widget.ListView.fillFromTop(ListView.java:763) 
                      at android.widget.ListView.layoutChildren(ListView.java:1684) 
                      at android.widget.AbsListView.onLayout(AbsListView.java:2148) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743) 
                      at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586) 
                      at android.widget.LinearLayout.onLayout(LinearLayout.java:1495) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) 
                      at android.widget.FrameLayout.onLayout(FrameLayout.java:273) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) 
                      at android.widget.FrameLayout.onLayout(FrameLayout.java:273) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:437) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) 
                      at android.widget.FrameLayout.onLayout(FrameLayout.java:273) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743) 
                      at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586) 
                      at android.widget.LinearLayout.onLayout(LinearLayout.java:1495) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) 
                      at android.widget.FrameLayout.onLayout(FrameLayout.java:273) 
                      at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678) 
                      at android.view.View.layout(View.java:16630) 
                      at android.view.ViewGroup.layout(ViewGroup.java:5437) 
                      at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171) 
                      at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931) 
                      at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) 
                      at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013) 
                      at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858) 
                      at android.view.Choreographer.doCallbacks(Choreographer.java:670) 
                      at android.view.Choreographer.doFrame(Choreographer.java:606) 
                      at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844) 
                      at android.os.Handler.handleCallback(Handler.java:739) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:148) 
                      at android.app.ActivityThread.main(ActivityThread.java:5417) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

アップデート2： activity_movie_detail.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:id="@+id/container1" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context=".MovieDetailsActivity" 
tools:ignore="MergeRootFrame" /> 

と、

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
app:layout_behavior="@string/appbar_scrolling_view_behavior" 
tools:context="me.abhishekraj.showmyshow.MovieDetailsActivity" 
tools:showIn="@layout/activity_movie_detail"> 

<ImageView 
    android:id="@+id/movie_detail_title_image_view" 
    android:layout_width="match_parent" 
    android:layout_height="200dp" 
    android:scaleType="centerCrop" 

    android:src="@mipmap/ic_launcher" 
    app:layout_collapseMode="parallax" 
    app:layout_collapseParallaxMultiplier="0.7" /> 

<TextView 
    android:id="@+id/movie_detail_title_text_view" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_margin="@dimen/text_margin" 
    android:text="@string/large_text" /> 

Answer 1

item_movie_detail.xml問題は、レイアウトが膨張されているアダプタです。

convertView = inflater.inflate(R.layout.activity_movie_details, parent, false); しかし、それを開始することができ、そこから任意のレイアウトを見つけることができませんでしたアンドロイドなどImageViewのとのTextViewのテキスト/画像を設定しながら、それは、NullPointerExceptionエラーになります：書かれたコードです。 全体的に、膨らんだレイアウトファイルは、フレームレイアウトのみを含み、画像/テキストビューを持たないactivity_movie_detailsです。 コードの代わりに次のようになります。

convertView = inflater.inflate(R.layout.item_movie_detail, parent, false);