android.view.InflateException: riga di file XML binario n. 9: Errore durante il gonfiaggio della classe <unknown>

Question

Ho esaminato questo problema per ore e errori simili che non hanno risolto le soluzioni.

Sto riutilizzando questo file XML per più ListViews in attività diverse (che presumo abbia qualcosa a che fare con esso) ma non vedo perché si romperebbe. Il file XML rappresenta i singoli elementi in ListView.

Ecco il XML:

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:paddingLeft="10dp" 
    android:paddingRight="10dp" 
    android:paddingTop="5dp" > 

    <LinearLayout 
     android:id="@+id/post" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:background="?attr/postBackground" 
     android:orientation="horizontal" > 

     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:orientation="vertical" > 

      <LinearLayout 
       android:id="@+id/postTop" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:orientation="horizontal" 
       android:padding="8dp" > 

       <LinearLayout 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_weight="1" 
        android:orientation="vertical" > 

        <!-- Title --> 

        <TextView 
         android:id="@+id/title" 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:fontFamily="sans-serif-light" 
         android:textColor="?attr/postTitle" 
         android:textSize="16sp" 
         android:textStyle="bold" /> 

        <!-- subreddit + domain --> 

        <TextView 
         android:id="@+id/subredditDomainVotes" 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:fontFamily="sans-serif" 
         android:gravity="left" 
         android:textColor="#828282" 
         android:textSize="13sp" /> 

        <TextView 
         android:id="@+id/date" 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:fontFamily="sans-serif" 
         android:gravity="left" 
         android:textColor="#828282" 
         android:textSize="13sp" /> 
       </LinearLayout> 

      </LinearLayout> 

      <ImageView 
       android:id="@+id/imagePreview" 
       android:layout_width="fill_parent" 
       android:layout_height="200dp" 
       android:adjustViewBounds="false" 
       android:background="?attr/postPreviewBground" 
       android:contentDescription="@string/empty" 
       android:scaleType="centerCrop" /> 

      <RelativeLayout 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:background="?attr/postBottom" 
       android:padding="8dp" > 

       <!-- Author --> 

       <TextView 
        android:id="@+id/author" 
        style="?attr/postButton" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_alignParentLeft="true" 
        android:textSize="12sp" /> 

       <!-- Comments --> 

       <TextView 
        android:id="@+id/comments" 
        style="?attr/postButton" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_alignParentRight="true" 
        android:textSize="12sp" /> 
      </RelativeLayout> 
     </LinearLayout> 
    </LinearLayout> 

</FrameLayout> 

Ed ecco il Java (errore si verifica su convertView = (FrameLayout) FrameLayout.inflate (mContext, R.layout.column_post, null);):

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

JSONObject thePost = null; 
String kind = null; 
try { 
    thePost = mPosts.getJSONObject(position); 
    kind = thePost.getString("kind"); 
} catch (Exception e) { 
    System.out.println("errreoroer"); 
} 

if (null == convertView) { 

    LayoutInflater inflater = (LayoutInflater) mContext 
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

    convertView = new FrameLayout(mContext); 

    if (Switches.getInMailView()) { 

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

     mailHolder = new MailHolder(); 
     mailHolder.authorView = (TextView) convertView 
       .findViewById(R.id.author); 
     mailHolder.dateView = (TextView) convertView 
       .findViewById(R.id.date); 
     mailHolder.subjectView = (TextView) convertView 
       .findViewById(R.id.subject); 

    } else { 

     if (kind.equals("t3")) { 
        //ERROR HAPPENS RIGHT HERE 
      convertView = (FrameLayout) FrameLayout.inflate(mContext, R.layout.column_post, null); 

      holder = new PostHolder(); 
      // grab the post view objects 
      holder.postTitleView = (TextView) convertView 
        .findViewById(R.id.title); 
      holder.dateView = (TextView) convertView 
        .findViewById(R.id.date); 
      holder.authorView = (TextView) convertView 
        .findViewById(R.id.author); 
      holder.commentsView = (TextView) convertView 
        .findViewById(R.id.comments); 
      holder.subredditDomainVotesView = (TextView) convertView 
        .findViewById(R.id.subredditDomainVotes); 
      holder.imagePreviewView = (ImageView) convertView 
        .findViewById(R.id.imagePreview); 
      holder.postTopView = (LinearLayout) convertView 
        .findViewById(R.id.postTop); 

      convertView.setTag(holder); 

     } 

    } 

} else { 

    if (Switches.getInMailView()) 
     mailHolder = (MailHolder) convertView.getTag(); 
    else { 

     if (kind.equals("t3")) 
      holder = (PostHolder) convertView.getTag(); 

    } 

} 

try { 

    if (Switches.getInMailView()) 
     return buildMailPostItem((RelativeLayout) convertView, 
       thePost.getJSONObject("data"), kind); 
    else { 
     if (kind.equals("t3")) 
      return buildGenericPostItem((FrameLayout) convertView, 
        thePost.getJSONObject("data"), kind, position); 
    } 

} catch (JSONException e) { 

    return null; 
} 

return convertView; 

} 

Stacktrace

11-26 18:23:09.492: E/AndroidRuntime(4616): FATAL EXCEPTION: main 
11-26 18:23:09.492: E/AndroidRuntime(4616): Process: com.reditr.app, PID: 4616 
11-26 18:23:09.492: E/AndroidRuntime(4616): android.view.InflateException: Binary XML file line #9: Error inflating class <unknown> 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.LayoutInflater.createView(LayoutInflater.java:620) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:755) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at com.reditr.adapters.PostAdapter.getView(PostAdapter.java:145) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:220) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.AbsListView.obtainView(AbsListView.java:2263) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.ListView.makeAndAddView(ListView.java:1790) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.ListView.fillDown(ListView.java:691) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.ListView.fillFromTop(ListView.java:752) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.ListView.layoutChildren(ListView.java:1630) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.AbsListView.onLayout(AbsListView.java:2091) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.FrameLayout.onLayout(FrameLayout.java:388) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1585) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1660) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1436) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.FrameLayout.onLayout(FrameLayout.java:388) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:374) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.widget.FrameLayout.onLayout(FrameLayout.java:388) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.View.layout(View.java:14785) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewGroup.layout(ViewGroup.java:4631) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1985) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1742) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5582) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.Choreographer.doFrame(Choreographer.java:532) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.os.Handler.handleCallback(Handler.java:733) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.os.Handler.dispatchMessage(Handler.java:95) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.os.Looper.loop(Looper.java:137) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at android.app.ActivityThread.main(ActivityThread.java:4998) 
11-26 18:23:09.492: E/AndroidRuntime(4616):  at java.lang.refl 

Grazie in anticipo.

Answer 1

Grazie a @kiruwka, il problema è risolto!

Il problema era che dovevo assicurarmi di utilizzare lo stesso tema in tutte le attività.

Answer 2

Vorrei usare il dispositivo di gonfiaggio afferrato dal contesto piuttosto che il metodo statico di FrameLayout, solo per mantenere il codice libero. Il metodo inflate() ereditato da FrameLayout è solo un wrapper che chiama Context.getSystemService(), quindi chiama inflate. Provare a cambiare a questo:

 convertView = 
      (FrameLayout)inflater.inflate(mContext, 
              R.layout.column_post, 
              parent, 
              false); 

Ho il sospetto che l'incidente che state vedendo è perché si sta passando null per il genitore e il il gonfiaggio di default() Variante tenterà di collegare visualizzare il nuovo bambino che si sta creando al genitore (che non si vuole fare.)