Question

我花了2个小时尝试在 ExpandableListView 上实现 OnChildClickListener ，但无效。我无法找到我犯错的地方......

这是我的适配器类：的 ExpandableListAdapter.java

public class ExpandableListAdapter extends BaseExpandableListAdapter  {

    private Context mContext;
    private ExpandableListView mExpandableListView;
    private List<Grupe> mGroupCollection;
    private int[] groupStatus;


    public ExpandableListAdapter (){}
    public ExpandableListAdapter(Context pContext,
            ExpandableListView pExpandableListView,
            List<Grupe> pGroupCollection) {
        mContext = pContext;
        mGroupCollection = pGroupCollection;
        mExpandableListView = pExpandableListView;
        groupStatus = new int[mGroupCollection.size()];

        setListEvent();
    }

    private void setListEvent() {

        mExpandableListView
                .setOnGroupExpandListener(new OnGroupExpandListener() {

                    @Override
                    public void onGroupExpand(int arg0) {
                        // TODO Auto-generated method stub
                        groupStatus[arg0] = 1;
                    }
                });

        mExpandableListView
                .setOnGroupCollapseListener(new OnGroupCollapseListener() {

                    @Override
                    public void onGroupCollapse(int arg0) {
                        // TODO Auto-generated method stub
                        groupStatus[arg0] = 0;
                    }
                });
    }

    @Override
    public String getChild(int arg0, int arg1) {
        // TODO Auto-generated method stub
        //return mGroupCollection.get(arg0).GroupItemCollection.get(arg1).Name;
        return mGroupCollection.get(arg0).getChildren().get(arg0).getPrimaoc_Poruke();
    }

    @Override
    public long getChildId(int arg0, int arg1) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getChildView(int arg0, int arg1, boolean arg2, View arg3,
            ViewGroup arg4) {
        // TODO Auto-generated method stub

        ChildHolder childHolder;
        if (arg3 == null) {
            arg3 = LayoutInflater.from(mContext).inflate(
                    R.layout.list_group_item, null);

            childHolder = new ChildHolder();

            childHolder.title = (TextView) arg3.findViewById(R.id.item_title);
            arg3.setTag(childHolder);
        }else {
            childHolder = (ChildHolder) arg3.getTag();
        }

        //childHolder.title.setText(mGroupCollection.get(arg0).GroupItemCollection.get(arg1).Name);
        childHolder.title.setText(mGroupCollection.get(arg0).getChildren().get(arg1).getPrimaoc_Poruke());
        return arg3;
    }

    @Override
    public int getChildrenCount(int arg0) {
        // TODO Auto-generated method stub
        //return mGroupCollection.get(arg0).GroupItemCollection.size();
        return mGroupCollection.get(arg0).getChildren().size();
    }

    @Override
    public Object getGroup(int arg0) {
        // TODO Auto-generated method stub
        return mGroupCollection.get(arg0);
    }

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

    @Override
    public long getGroupId(int arg0) {
        // TODO Auto-generated method stub
        return arg0;
    }

    @Override
    public View getGroupView(int arg0, boolean arg1, View arg2, ViewGroup arg3) {
        // TODO Auto-generated method stub
        GroupHolder groupHolder;
        if (arg2 == null) {
            arg2 = LayoutInflater.from(mContext).inflate(R.layout.list_group,
                    null);
            groupHolder = new GroupHolder();
            groupHolder.img = (ImageView) arg2.findViewById(R.id.tag_img);
            groupHolder.title = (TextView) arg2.findViewById(R.id.group_title);
            arg2.setTag(groupHolder);
        } else {
            groupHolder = (GroupHolder) arg2.getTag();
        }
        if (groupStatus[arg0] == 0) {
            groupHolder.img.setImageResource(R.drawable.group_down);
        } else {
            groupHolder.img.setImageResource(R.drawable.group_up);
        }
    //  groupHolder.title.setText(mGroupCollection.get(arg0).Name);
        groupHolder.title.setText(mGroupCollection.get(arg0).getTip());

        return arg2;
    }

    class GroupHolder {
        ImageView img;
        TextView title;
    }

    class ChildHolder {
        TextView title;
    }

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

    @Override
    public boolean isChildSelectable(int arg0, int arg1) {
        // TODO Auto-generated method stub
        return true;
    }

}

MainActivity类

public class Glavna extends Activity implements OnClickListener, OnChildClickListener{

private List<Grupe> mGroupCollection; //grupe korisnika
    private ExpandableListView mExpandableListView;
    private ExpandableListAdapter adapter=null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_glavna);
         System.out.println("POCINJEM SAAAAAAAA RADOM");

prepareResource();
        initPage();
}

private void initPage() {
        mExpandableListView = (ExpandableListView) findViewById(R.id.expandableListView1);

         adapter = new ExpandableListAdapter(this,
                mExpandableListView, mGroupCollection);

        mExpandableListView.setAdapter(adapter);


        mExpandableListView.setOnChildClickListener(this);

    }
private void prepareResource() {


        mGroupCollection = new ArrayList<Grupe>();
            ge.setTip("Online korisnici");
                mGroupCollection.add(ge);

    AktivniChat gi  = new AktivniChat(1, "primaoc 1", new Korisnik(1, "posiljaoc1"));
    mGroupCollection.get(0).setAktivniChat(gi);



    }

@Override
    public boolean onChildClick(ExpandableListView parent, View v,
            int groupPosition, int childPosition, long id) {
        // TODO Auto-generated method stub

        System.out.println("test");
        return true;
    }

}

Answer 1

解决方案在这里：

这是我的ExpandableListView：

enter image description here

xml文件（在所有元素上设置 android：focusable =“false”）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:baselineAligned="false"
    android:paddingTop="5dip" 
    android:focusable="false">

    <LinearLayout
        android:id="@+id/groupItem"
        android:layout_width="0dip"
        android:layout_height="fill_parent"
        android:layout_weight="1"
        android:background="#FFF385"
        android:clickable="false" 
        android:focusable="false">

        <TextView
            android:id="@+id/item_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="#FF84"
            android:clickable="false"
            android:focusable="false"
            android:focusableInTouchMode="false"
            android:text="sample"
            android:textColor="#000000"
            android:textSize="20sp" />

    </LinearLayout>

</LinearLayout>

在此OnChildClickListener完美运行之后：）

Answer 2

别忘了启用子可选择属性..

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

Answer 3

它也适用于我...布局（孩子的）中的所有项目必须设置为focusable =“false”和clickable =“false”。但如果您在子布局中有按钮，则无法使用。

ExpandableListView OnChildClickListener不起作用

3 个答案: