Question

我使用expandable listview根据南，北，东，中心显示印度的状态。状态列表显示那样，但是当应用onChildclickListener到expandableListView时没有响应。我想在点击印度的状态时打开一个新的活动。

可扩展列表视图

 <ExpandableListView
 android:id="@+id/indiaParts"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content" 
 android:groupIndicator="@null"
 android:listSelector="@null"
 android:scrollbars="none"
/>

list_group.xml

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/group_header_bg"
android:gravity="center_vertical" 
 >

<ImageView
    android:id="@+id/tag_img"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:layout_marginRight="10dip"
    android:src="@drawable/group_down"       
  />

<TextView
    android:id="@+id/group_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_marginLeft="10dip"
    android:text="Sample"
    android:textColor="#FFFFFF"
    android:textSize="18dip"
    android:textStyle="bold"
    />

list_group_item.xml

   <?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="wrap_content"
  android:background="@drawable/group_item_normal"
  android:id="@+id/groupItem"
  android:clickable="true"
  >

    <TextView
        android:id="@+id/item_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dip"
        android:text="sample"
        android:textColor="#000000"
        android:textSize="20sp"
        android:layout_gravity="center" 
        android:gravity="center"
        />

  </LinearLayout>

适配器类

 public class ExpandableListAdapter extends BaseExpandableListAdapter {

private Context mContext;
private ExpandableListView mExpandableListView;
private ArrayList <GroupEntity> mGroupCollection;
private int[] groupStatus;

public ExpandableListAdapter(Context pContext,
        ExpandableListView pExpandableListView,
        ArrayList<GroupEntity> 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).getStatesList().get(arg1).getStateName();
}

@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).getStatesList().get(arg1).getStateName());
    return arg3;
}

@Override
public int getChildrenCount(int arg0) {
    // TODO Auto-generated method stub
    return mGroupCollection.get(arg0).getStatesList().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).getGroupName());

    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
    System.out.println("vcvv.........."+true);
    return true;
}

}

活动类

       expandableListView=(ExpandableListView) findViewById(R.id.indiaParts);

    expandableListAdapter=new ExpandableListAdapter(StatesScreen.this, expandableListView, groupEntityList);
    expandableListView.setAdapter(expandableListAdapter);


    expandableListView.setOnChildClickListener(new OnChildClickListener() {

        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {
            // TODO Auto-generated method stub
            Toast.makeText(StatesScreen.this, "Hi click",Toast.LENGTH_LONG).show();
            System.out.println("clicked..............////."+groupPosition);
            Intent categoryList=new Intent(StatesScreen.this,CategoryList.class);
            startActivity(categoryList);
            return false;
        }
    });

Answer 1

出现此问题，然后您的孩子的视图具有自己的焦点元素。您可以通过删除android：clickable from children layout或将其设置为false来删除它：

   <?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="wrap_content"
  android:background="@drawable/group_item_normal"
  android:id="@+id/groupItem"
  <!-- remove clickable from here -->
  <!-- or android:clickable="false" -->
  >

如果你的子元素没有任何可点击和可聚焦的元素，那么可以使用标准的ListView可聚焦。

抱歉我的英文不好

ExpandabeListView不支持android中的ChildClickListener

1 个答案: