System Windows double expandview listview ukrywa elementy, jeśli lista jest zbyt duża

Question

Stworzyłem drzewo jako podwójny widok listy rozwijanej, jeden z przedmiotów, który ma zbyt wiele dzieci (15) więcej niż pozostałe, nie pokazuje wszystkich swoich dzieci.

_ ______ 
+|_______| 
    _______ 
    +|_______| 
     _______ 
     |_______| 
     _______ 
     |_______| 
      ... 
      ... 
     _______ 
     |_______| // 11-th item 
     _______ // 12-th item can be seen a little and it-s clickable 
    _______ 
    +|_______| 
    _______ 
    +|_______| 
    ... 
    ... 
    _______ 
    +|_______| 

Po 12 pozycji zostaje wycięty. Nie nakładałem żadnych ograniczeń na wielkość listy. Jakiś pomysł, dlaczego tak się stało? Dzięki!

EDYTOWANIE To jest kod dla rozwijanej listy jodeł.

<ExpandableListView android:layout_width="fill_parent" android:id="@+id/ParentLevel" 
       android:groupIndicator="@null" android:choiceMode="singleChoice" 
       android:layout_height="fill_parent" 
       android:layout_above="@id/button_layout" 
       android:paddingRight="5dp"> 

Drugi podlistę dodano w getView adaptera() metody.

przykład kodu

//MainActivity.java 
public class MainActivity extends Activity implements OnChildClickListener { 

ExpandableListView elv; 

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

    // QUI SOTTO 
    Tree root = new Tree("root", 123); 

    for (int i = 0; i < 3; i++) { 
     Tree firstLevel = new Tree(("firstLevel" + i), i); 

     for (int j = 0; j < 6; j++) { 
      Tree secondLevel = new Tree("secondLevel" + j, j); 

      for (int z = 0; z < 27; z++) { 
       Tree thirdLevel = new Tree("thirdLevel" + z, z); 

       secondLevel.addChild(thirdLevel); 
      } 

      firstLevel.addChild(secondlevel); 
     } 

     root.addChild(firstLevel); 
    } 


    elv = new ExpandableListView(this); 
    final TreeAdapter treeAdapter = new TreeAdapter(this, root, this); 
    elv.setAdapter(treeAdapter); 
    elv.setChoiceMode(ExpandableListView.CHOICE_MODE_SINGLE); 

    elv.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() { 

     @Override 
     public boolean onGroupClick(ExpandableListView parent, View v, 
       int groupPosition, long id) { 

      for (int i = 0; i < treeAdapter.getGroupCount(); i++) { 
       elv.collapseGroup(i); 
      } 

      elv.expandGroup(groupPosition); 
      return true; 
     } 
    }); 

    setContentView(elv); 
    elv.expandGroup(0); 

    Entry e = treeAdapter.lsfirst[0]; 

    e.cls.expandGroup(1); 

    treeAdapter.selectedClass = 33; 

} 

TreeAdapter.java

public class TreeAdapter extends BaseExpandableListAdapter { 

final static String TAG = TreeAdapter.class.getSimpleName(); 


static public Integer selectedClass = null; 

static int CHILD_PADDING; 
static float TEXT_SIZE; 


private Tree tree; 

private OnChildClickListener lst; 

final private Context context; 


class Entry{ 
    final CustExpListview cls; 
    final SecondLevelAdapter sadtp; 
    public Entry(CustExpListview cls, SecondLevelAdapter sadtp) { 
     this.cls = cls; 
     this.sadtp = sadtp; 
    } 
} 

Entry[] lsfirst; 


public TreeAdapter(MainActivity ctx, Tree tree, OnChildClickListener lst){ 
    this.context = ctx; 
    this.tree = tree;  
    this.lst = lst; 
    TEXT_SIZE = 35; 
    CHILD_PADDING = 40; 

    lsfirst = new Entry[tree.getChilds().size()]; 

    for(int i=0; i<tree.getChilds().size();i++){ 
      CustExpListview SecondLevelexplv = new CustExpListview(context); 
      SecondLevelAdapter adp = new  
         SecondLevelAdapter(tree.getChilds().get(i)); 
      SecondLevelexplv.setAdapter(adp); 
      SecondLevelexplv.setGroupIndicator(null); 
      SecondLevelexplv.setOnChildClickListener(lst);// add listener 

      lsfirst[i] = new Entry(SecondLevelexplv, adp); 

    } 


} 



    @Override 
    public Object getChild(int arg0, int arg1){    
      return arg1; 
    } 

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

    @Override 
    public View getChildView(int groupPosition, int childPosition, 
          boolean isLastChild, View convertView, ViewGroup parent){ 
     //LISTA DI secondlevel   
     return lsfirst[groupPosition].cls; 
    } 

    @Override 
    public int getChildrenCount(int groupPosition){ 
    return 1; 
    } 

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

    @Override 
    public int getGroupCount() { 
    return tree.getChilds().size(); 
    } 

    @Override 
    public long getGroupId(int groupPosition) { 

    return tree.getChilds().get(groupPosition).getId(); 
    } 

    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, 
          View convertView, ViewGroup parent){ 

     //firstlevel 

    TextView tv = new TextView(context); 
    tv.setText(tree.getChilds().get(groupPosition).getName()); 
    tv.setPadding(3, 7, 7, 7); 

    return tv; 
    } 

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

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


    ///////////////////////////////////////////////////////////////////////////// 

    //_____________-------------________----------________---------_______-----// 

    ///////////////////////////////////////////////////////////////////////////// 


    public class CustExpListview extends ExpandableListView{ 

      int intGroupPosition, intChildPosition, intGroupid; 

      public CustExpListview(Context context) 
      { 
      super(context); 

      this.setSelector(R.drawable.divider_gray); 

      } 

      protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) 
      { 
      widthMeasureSpec = MeasureSpec.makeMeasureSpec(960, MeasureSpec.AT_MOST); 
      heightMeasureSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST); 
      super.onMeasure(widthMeasureSpec, heightMeasureSpec); 
      } 
      } 

      public class SecondLevelAdapter extends BaseExpandableListAdapter{ 

       Tree tree2; 
       public SecondLevelAdapter(Tree tr) { 
        this.tree2 = tr; 
       } 

        //Returns the id of the selected class 
        @Override 
        public Object getChild(int groupPosition, int childPosition) {     
    return tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getId(); 
        } 

        @Override 
        public long getChildId(int groupPosition, int childPosition) { 
         return tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getId(); 
        } 

        @Override 
        public View getChildView(int groupPosition, int childPosition, 
              boolean isLastChild, View convertView, ViewGroup parent) { 
         //thirdlevel 
         TextView tv = new TextView(context); 
         tv.setText(tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getName()); 

         if(selectedClass!=null && selectedClass ==tree2.getChilds().get(groupPosition).getChilds().get(childPosition).getId()){ 
          tv.setBackgroundResource(R.drawable.divider_gray); 

         } 
         tv.setPadding(2*CHILD_PADDING, 5, 300, 5); 

        return tv; 
        } 

        @Override 
        public int getChildrenCount(int groupPosition){ 
        return tree2.getChilds().get(groupPosition).getChilds().size(); 
        } 

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

        @Override 
        public int getGroupCount() { 
        return tree2.getChilds().size(); 
        } 

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

        @Override 
        public View getGroupView(int groupPosition, boolean isExpanded, 
        View convertView, ViewGroup parent) 
        {// secondlevel 
        TextView tv = new TextView(context); 
        tv.setText(tree2.getChilds().get(groupPosition).getName()); 
        tv.setPadding(CHILD_PADDING, 7, 200, 7); 

        return tv; 
        } 

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

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

    } 

} 

Tree.java

public final class Tree { 

final static String TAG=Tree.class.getSimpleName(); 

final private String name; 
final private int id; 

private Tree parent; 
private LinkedList<Tree> childs = new LinkedList<Tree>(); 


public Tree(String name, int id) { 
    parent = null; 
    this.name = name; 
    this.id = id; 
} 

public void addChild(Tree child){ 
    child.parent = this; 
    childs.add(child); 
} 


public int getId() { 
    return id; 
} 

public String getName() { 
    return name; 
} 

public Tree getParent() { 
    return parent; 
} 

public LinkedList<Tree> getChilds() { 
    return childs; 
} 



@Override 
public String toString() { 
    Iterator<Tree> iter = childs.iterator(); 
    String childs = "["; 
    while(iter.hasNext()){ 
     Tree ch = iter.next(); 
     childs = childs.concat(ch+","); 
    } 
    childs = childs.concat("]"); 
    return name + " "+ id + childs; 
} 


} 

Answer 1

nie testowałem swój kod, ale patrząc na metodzie onMeasure() wasze CustExpListview, Rozumiem podałeś maksymalną szerokość i wysokość. Jeśli usuniesz maksymalną wysokość, powinna być w stanie zmieścić wszystkie dzieci.