我遇到一个问题，即我在一个父级中使用网格视图作为子视图实现ExpandableListView。 GridView中有46个图像。因此，当我们打开第一个父项时，它显示的网格视图包含超过46个图像，其中包含46个图像的插槽。意味着显示46个图像的一个插槽，然后再显示另外46个图像，然后是另一个，然后是另一个。意味着在一个布局中重复相同布局的次数。我无法找到问题的根源，因此无法解决问题。请建议我任何解决方案。
代码（可扩展列表）：
public class ExpResearchListAdapter extends BaseExpandableListAdapter {
// Sample data set. children[i] contains the children (String[]) for
// groups[i].
Context context;
/*private String[] groups = { "Research by Brand", "Research by Category",
"Research by Price" , "Research by Fuel Economy", "Recently Viewed"};*/
GridView label;
TextView groupText;
ImageView groupImg;
ArrayList<String> groups = new ArrayList<String>();
ArrayList<Integer> groupImage = new ArrayList<Integer>();
ArrayList<Integer> childElement = new ArrayList<Integer>();
private Integer[][] children = {
{ R.drawable.icon_1, R.drawable.icon_2, R.drawable.icon_3, R.drawable.icon_4, R.drawable.icon_5, R.drawable.icon_6, R.drawable.icon_7, R.drawable.icon_8, R.drawable.icon_9,
R.drawable.icon_10, R.drawable.icon_11, R.drawable.icon_12, R.drawable.icon_13, R.drawable.icon_14, R.drawable.icon_15, R.drawable.icon_16, R.drawable.icon_17, R.drawable.icon_18,
R.drawable.icon_19, R.drawable.icon_20, R.drawable.icon_21, R.drawable.icon_22, R.drawable.icon_23, R.drawable.icon_24, R.drawable.icon_25, R.drawable.icon_26, R.drawable.icon_27,
R.drawable.icon_28, R.drawable.icon_29, R.drawable.icon_30, R.drawable.icon_31, R.drawable.icon_32, R.drawable.icon_33, R.drawable.icon_34, R.drawable.icon_35, R.drawable.icon_36,
R.drawable.icon_37, R.drawable.icon_38, R.drawable.icon_39, R.drawable.icon_40, R.drawable.icon_41, R.drawable.icon_42, R.drawable.icon_43, R.drawable.icon_44, R.drawable.icon_45,
R.drawable.icon_46}
};
LinearLayout linear;
public ExpResearchListAdapter(Context context, ArrayList<String> groups, ArrayList<Integer> groupImage, ArrayList<Integer> childElement, LinearLayout linear)
{
this.context=context;
this.groups = groups;
this.groupImage = groupImage;
this.childElement = childElement;
this.linear = linear;
}
public Object getChild(int groupPosition, int childPosition) {
return children[groupPosition][childPosition];
}
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
public int getChildrenCount(int groupPosition) {
int i = 0;
try {
i = children[groupPosition].length;
} catch (Exception e) {
}
return i;
}
public TextView getGenericView() {
// Layout parameters for the ExpandableListView
AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, 64);
TextView textView = new TextView(context);
textView.setLayoutParams(lp);
// Center the text vertically
textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
//textView.setTextColor(R.color.marcyred);
// Set the text starting position
textView.setPadding(36, 0, 0, 0);
return textView;
}
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
if(convertView==null)
{
LayoutInflater inflater = LayoutInflater.from(context);
convertView = (View) inflater.inflate(R.layout.brand_research_grid, null);
label = (GridView) convertView.findViewById(R.id.gv_ResearchList_Child);
label.setAdapter(new GridAdapter(context, children));
label.setCacheColorHint(Color.WHITE);
// initialize the following variables (i've done it based on your layout
// note: rowHeightDp is based on my grid_cell.xml, that is the height i've
// assigned to the items in the grid.
final int spacingDp = 10;
final int colWidthDp = 50;
//final int rowHeightDp = (childElement.size()/3)*10;
final int rowHeightDp = 107;
// convert the dp values to pixels
final float COL_WIDTH = context.getResources().getDisplayMetrics().density * colWidthDp;
final float ROW_HEIGHT = context.getResources().getDisplayMetrics().density * rowHeightDp;
final float SPACING = context.getResources().getDisplayMetrics().density * spacingDp;
System.out.println("===================================RowHeight"+ROW_HEIGHT);
System.out.println("===================================RowHeightDP"+rowHeightDp);
// calculate the column and row counts based on your display
final int colCount = (int)Math.floor((linear.getWidth() - (2 * SPACING)) / (COL_WIDTH + SPACING));
//final int rowCount = (int)Math.ceil((childElement.size() + 0d) / 3);
final int rowCount = 16;
// calculate the height for the current grid
final int GRID_HEIGHT = Math.round(rowCount * (ROW_HEIGHT + SPACING));
System.out.println("===================================GHieght"+GRID_HEIGHT);
System.out.println("===================================colCount"+colCount);
System.out.println("===================================rowCount"+rowCount);
// set the height of the current grid
label.getLayoutParams().height = GRID_HEIGHT;
}
return convertView;
}
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}
public int getGroupCount() {
return groups.size();
}
public long getGroupId(int groupPosition) {
return groupPosition;
}
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String group = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(
R.layout.research_list_exp_group, null);
groupText = (TextView) convertView
.findViewById(R.id.tv_ResearchList_ExpParentElement);
groupImg = (ImageView) convertView
.findViewById(R.id.img_ResearchList_GroupParentImage);
// convertView.setClickable(false);
}
groupText.setText(group);
groupImg.setImageResource(groupImage.get(groupPosition));
return convertView;
}
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
public boolean hasStableIds() {
return true;
}
}
GridAdapter：
public class GridAdapter extends BaseAdapter{
public Context context;
private LayoutInflater mInflater;
//public ArrayList<Integer> childElements = new ArrayList<Integer>();
Integer[][] childElements;
ImageView imgGridItem;
public GridAdapter(Context context, Integer[][] childElements)
{
this.context = context;
this.childElements = childElements;
mInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return childElements.length;
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
//pos=position;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.grid_item, null);
holder = new ViewHolder();
imgGridItem = (ImageView)convertView.findViewById(R.id.img_GridItem);
}
imgGridItem.setImageResource(childElements[position][0]);
return convertView;
}
class ViewHolder {
private ImageView imgGridItem;
}
}
提前致谢。
答案 0 :(得分：1)
看了几个小时没有解决方案。这是答案。只需在父适配器中创建函数getChildrenCount，如下所示：
read -t 1答案 1 :(得分：-1)
您需要做的只是将一个孩子传递到可扩展列表。因此，只有一个gridview将显示在可扩展列表中，但是您希望在网格视图中显示所有选项。
因此，如果您有另一个组，使用另一个gridview项，只需使用gridview将一个项添加到可扩展列表的该组，但在此gridview中，请确保传递您希望它拥有的数据。我的意思是，你应该使用相同的gridview适配器，但使用不同的数据。我希望这能帮到你。