Android ExpandableListView沒有擴展

Question

我正在為城市制作一個可擴展的列表視圖，但它不會擴展。 我有另外一個幾乎完全像這個，但這個不會擴大，我花了很多時間試圖看到什么是錯的，不能再浪費，有人可以指出問題嗎？

我也調用了expandGroup（0），但它仍然沒有擴展（好像沒有什么可擴展的）。

XML

<ExpandableListView
                        android:id="@+id/judet"
                        android:layout_width="fill_parent"
                        android:layout_height="wrap_content"
                        android:layout_margin="10dp"
                        android:choiceMode="singleChoice"
                        android:groupIndicator="@null"
                        android:smoothScrollbar="true" >
                    </ExpandableListView>

在我的主要班級

final AdapterJudet adapterJudet = new AdapterJudet(getApplicationContext());
ExpandableListView judet = (ExpandableListView) findViewById(R.id.judet);
judet.setAdapter(adapterJudet);
judet.setOnChildClickListener(new OnChildClickListener() {
            @Override
            public boolean onChildClick(ExpandableListView parent, View v,
                    int groupPosition, int childPosition, long id) {

                AdapterJudet.selected = AdapterJudet.judete[childPosition];
                judet.collapseGroup(0);
                return false;
            }
        });

適配器類

public class AdapterJudet extends BaseExpandableListAdapter {

    Context ctx;
    static String [] judete = {"Alba","Arad","Arges","Bacau","Bihor","Bistrita-Nasaud","Botosani","Brasov","Braila","Buzau","Caras-Severin","Cluj","Constanta","Covasna","Dambovita","Dolj","Galati","Giurgiu","Gorj","Hargita","Hunedoara","Ialomita","Maramures","Mehedinti","Mures","Neamt","Olt","Prahova","Satu-Mare","Salaj","Sibiu","Teleorman","Timis","Tulcea","Valcea","Vaslui","Vrancea","Bucuresti","Ilfov","Calarasi","Iasi","Suceava"};
    static String selected = "Judet";
    static int judetID = -1;

    public AdapterJudet (Context ctx){
        this.ctx = ctx;
    }

    @Override
    public Object getChild(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getChildView(int groupPosition, int childPosition,
            boolean isLastChild, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        View v = convertView;

        if (v == null) {
            LayoutInflater inflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = inflater.inflate(R.layout.item_layout, parent, false);
        }

        TextView itemName = (TextView) v.findViewById(R.id.itemName);

        itemName.setText(judete[childPosition]);
        judetID = childPosition;
        return v;
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        // TODO Auto-generated method stub
        return judete.length;
    }

    @Override
    public Object getGroup(int groupPosition) {
        // TODO Auto-generated method stub
        return groupPosition;
    }

    @Override
    public int getGroupCount() {
        // TODO Auto-generated method stub
        return 1;
    }

    @Override
    public long getGroupId(int groupPosition) {
        // TODO Auto-generated method stub
        return groupPosition;
    }

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        View v = convertView;

        if (v == null) {
            LayoutInflater inflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = inflater.inflate(R.layout.group_layout, parent, false);
        }

        TextView groupName = (TextView) v.findViewById(R.id.groupName);

        groupName.setText(selected);

        return v;
    }

    @Override
    public boolean hasStableIds() {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return true;
    }

}

Answer 1

我知道這個問題已經有一段時間了，我希望這有助於有人尋找答案。 當您有可點擊的小部件（如按鈕，復選框）時，為它們設置以下屬性：

android:focusable="false"

我猜測會發生什么事情是這些小部件竊取了焦點（雖然只有輸入來自鍵盤或類似的東西才有意義）並自動阻止隱式點擊監聽器（如組展開，崩潰發生隱式而不設置點擊監聽器）。

如果您仍想維護窗口小部件的可聚焦屬性，那么此時唯一的替代方法似乎是在適配器對象的getView（）方法中找到單個元素並設置顯式單擊偵聽器。

Answer 2

我知道你問這個問題差不多已經一年了....

我遇到了同樣的問題。 檢查您要為組視圖展開的布局中是否有任何“可點擊”小部件。 我的組視圖布局中有一個按鈕，它沒有將點擊傳遞給組。 刪除按鈕解決了我的問題。

Answer 3

將它用於ExpandableListView 。

list.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
            @Override
            public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
                return  list.isGroupExpanded(groupPosition) ? list.collapseGroup(groupPosition) : list.expandGroup(groupPosition);
            }
        });

Answer 4

我記得幾個月前遇到過類似的問題，請嘗試改變

android:layout_height="wrap_content"

至

android:layout_height="match_parent"

Answer 5

為我工作android：descendantFocusability =“blocksDescendants”在父視圖中添加上面的行