リストビュー内の項目をスクロール可能にするにはどうすればいいですか？

Question

私は複数のStackOverflowスレッドを見てきましたが、私の問題の解決策を見つけることができませんでした。私はExpandable listviewを持っていて、子要素にはpdfview（https://github.com/barteksc/AndroidPdfViewer）というものが含まれています。親要素をクリックしてPDFが表示されたら、ファイルを取得しています。クラスのための私のコードは次のとおりです。

parentlistview.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <TextView 
     android:id="@+id/text1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 
</LinearLayout> 

childlistview.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:weightSum="1"> 
    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"> 

     <com.github.barteksc.pdfviewer.PDFView 
      android:id="@+id/pdfViewList" 
      android:layout_width="352dp" 
      android:layout_height="565dp" 
      android:nestedScrollingEnabled="true"/> 
    </LinearLayout> 
</LinearLayout> 

ParentListView.java

public class ParentListView { 

    private TCSEvent tcsEvent; 

    private ArrayList<ChildListView> children; 

    public ArrayList<ChildListView> getChildren() { 
     return children; 
    } 

    public void setChildren(ArrayList<ChildListView> children) { 
     this.children = children; 
    } 

    public TCSEvent getTcsEvent() { 

     return tcsEvent; 
    } 

    public void setTcsEvent(TCSEvent tcsEvent) { 
     this.tcsEvent = tcsEvent; 
    } 
} 

ChildListView.java

私が使用しています210

MyExpandableListAdapter.java

import android.content.Context; 
import android.content.Intent; 
import android.net.Uri; 
import android.os.Build; 
import android.support.annotation.NonNull; 
import android.view.LayoutInflater; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseExpandableListAdapter; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.github.barteksc.pdfviewer.PDFView; 
import com.github.barteksc.pdfviewer.listener.OnLoadCompleteListener; 
import com.github.barteksc.pdfviewer.listener.OnPageChangeListener; 
import com.github.barteksc.pdfviewer.scroll.DefaultScrollHandle; 
import com.google.android.gms.tasks.OnFailureListener; 
import com.google.android.gms.tasks.OnSuccessListener; 
import com.google.firebase.database.DataSnapshot; 
import com.google.firebase.storage.FileDownloadTask; 
import com.google.firebase.storage.StorageReference; 
import com.shockwave.pdfium.PdfDocument; 

import java.io.File; 
import java.io.IOException; 
import java.util.ArrayList; 
import java.util.List; 

import static android.R.attr.progress; 
import static android.view.View.SCROLL_AXIS_VERTICAL; 
import static com.tcs.tcseventscalendar.R.id.pdfView; 

/** 
* Created by Aatika on 7/13/17. 
*/ 

public class MyExpandableListAdapter extends BaseExpandableListAdapter implements OnPageChangeListener, OnLoadCompleteListener { 
    private Context context; 
    private ArrayList<TCSEvent> parents; 
    private LayoutInflater inflater; 
    private StorageReference mStorageReference; 
    private int pageNumber = 0; 
    private PDFView pdfView; 
    private String localFileString; 

    public MyExpandableListAdapter(Context context, ArrayList<TCSEvent> parents, StorageReference mStorageReference) { 
     this.mStorageReference = mStorageReference; 
     this.context = context; 
     this.parents = parents; 

     inflater = LayoutInflater.from(context); 
    } 
    @Override 
    public int getGroupCount() { 
     return parents.size(); 
    } 

    @Override 
    public int getChildrenCount(int groupPosition) { 
     int size=0; 
     if(parents.get(groupPosition).getFileName()!=null) 
      return 1; 
     else return 0; 
    } 

    @Override 
    public Object getGroup(int groupPosition) { 
     return parents.get(groupPosition); 
    } 

    @Override 
    public Object getChild(int groupPosition, int childPosition) 
    { 
     return parents.get(groupPosition); 
    } 

    @Override 
    public long getGroupId(int groupPosition) { 
     return groupPosition; 
    } 

    @Override 
    public long getChildId(int groupPosition, int childPosition) { 
     return childPosition; 
    } 

    @Override 
    public boolean hasStableIds() { 
     return true; 
    } 

    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parentView) { 
     final TCSEvent parent = parents.get(groupPosition); 

     // Inflate parentlistview.xml file for parent rows 
     convertView = inflater.inflate(R.layout.parentlistview, parentView, false); 

     ((TextView) convertView.findViewById(R.id.text1)).setText(parent.toString()); 

     return convertView; 
    } 

    // This Function used to inflate child rows view 
    @Override 
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parentView) { 
     final TCSEvent parent = parents.get(groupPosition); 

     final String child = parent.getFileName(); 
     Toast.makeText(context, "CHILDVIEW", Toast.LENGTH_SHORT).show(); 
     convertView = inflater.inflate(R.layout.childlistview, parentView, false); 
     pdfView = (PDFView) convertView.findViewById(R.id.pdfViewList); 

     this.getFileLocation(parent, pdfView); 


     return convertView; 
    } 

    private void displayFromString(String fileName, PDFView pdfView) { 
     System.out.println("DISPLAY FROM STRING METHOD"); 
     System.out.println(fileName); 
     pdfView.fromUri(Uri.parse(fileName)) 
       .defaultPage(pageNumber) 
       .enableSwipe(true) 

       .swipeHorizontal(false) 
       .onPageChange(this) 
       .enableAnnotationRendering(true) 
       .onLoad(this) 
       .scrollHandle(new DefaultScrollHandle(context)) 
       .load(); 
     pdfView.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View v, MotionEvent event) { 
       System.out.println("PDFVIEW"); 
//    getView 
       return false; 
      } 
     }); 
    } 

    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return false; 
    } 

    private void getFileLocation(final TCSEvent event, final PDFView pdfView) { 
     String fileName = event.getFileName(); 
     System.out.println(fileName); 
     StorageReference pdfRef = mStorageReference.child(fileName); 

     final File localFile = new File(context.getExternalCacheDir(), event.getTitle()+event.getEpochDate() + ".pdf"); 
     localFileString = localFile.toString(); 

     if(!localFile.exists()) { 
      System.out.println("FILE BEING CREATED"); 
      pdfRef.getFile(localFile) 
        .addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() { 
         @Override 
         public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) { 
          System.out.println("SUCESS METHOD"); 
          event.setFileLocation(localFileString); 
          displayFromString(localFileString, pdfView); 
         } 
        }) 
        .addOnFailureListener(new OnFailureListener() { 
         @Override 
         public void onFailure(@NonNull Exception e) { 
          e.printStackTrace(); 
          Toast.makeText(context, "Something went wrong when fetching the file", Toast.LENGTH_SHORT).show(); 
         } 
        }); 
     } else { 
      System.out.println("ALREADY EXISTS"); 
      displayFromString(localFileString, pdfView); 
     } 

    } 

    @Override 
    public void onPageChanged(int page, int pageCount) { 
     pageNumber = page; 
//  setTitle(String.format("%s %s/%s", localFileString, page + 1, pageCount)); 
    } 

    @Override 
    public void loadComplete(int nbPages) { 
     printBookmarksTree(pdfView.getTableOfContents(), "-"); 

    } 

    public void printBookmarksTree(List<PdfDocument.Bookmark> tree, String sep) { 
     for (PdfDocument.Bookmark b: tree) { 


      if (b.hasChildren()) { 
       printBookmarksTree(b.getChildren(), sep + "-"); 
      } 
     } 
    } 
} 

マイリストビューは、通常の拡張可能なリストビューです。アクティビティクラスにあります。 ExpandableListView eventsListView = (ExpandableListView) findViewById(R.id.events_listview);

誰でも私を助けてくれますか？

Answer 1

スクロールビューでLinearLayoutsをラップすることができます。