我有一个带有一个可扩展列表视图的Android活动。然后我创建了我的ExpandableListAdapter,所以我可以点击一个项目,我可以看到这个项目的孩子。还行吧。 现在我想为每个项目的子列表插入标准标题(标题)。所以我构建了这段代码:
public class ResultExpandableListAdapter extends BaseExpandableListAdapter {
private Context context;
private List<Result> listaRisultati;
private HashMap<Integer, List<ResultXResult>> expandableListDetail;
public ResultExpandableListAdapter(Context context, List<Result> listaRisultati,
HashMap<Integer, List<ResultXResult>> expandableListDetail) {
this.context = context;
this.listaRisultati = listaRisultati;
this.expandableListDetail = expandableListDetail;
}
@Override
public Object getChild(int listPosition, int expandedListPosition) {
return this.expandableListDetail.get(this.listaRisultati.get(listPosition).getId())
.get(expandedListPosition);
}
@Override
public long getChildId(int listPosition, int expandedListPosition) {
return expandedListPosition;
}
@Override
public View getChildView(int listPosition, final int expandedListPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) this.context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(expandedListPosition ==0)
{
convertView = layoutInflater.inflate(R.layout.results_x_result_list_item_header, null);
}
if(expandedListPosition>0 && expandedListPosition<=getChildrenCount(expandedListPosition))
{
ResultXResult risultato = (ResultXResult) getChild(listPosition, expandedListPosition);
convertView = layoutInflater.inflate(R.layout.results_x_result_list_item,null);
TextView parameter = (TextView) convertView
.findViewById(R.id.parameter);
TextView valueUM = (TextView) convertView
.findViewById(R.id.valueUm);
TextView interpretation = (TextView) convertView
.findViewById(R.id.interpretation);
TextView um = (TextView) convertView
.findViewById(R.id.um);
parameter.setText(risultato.getInfo().getDisplayName());
valueUM.setText(risultato.getValue());
interpretation.setText(risultato.getInterpretationCode().getDisplayName());
um.setText(risultato.getUnitaDiMisura());
}
}
return convertView;
}
@Override
public int getChildrenCount(int listPosition) {
return this.expandableListDetail.get(this.listaRisultati.get(listPosition).getId())
.size();
}
@Override
public Object getGroup(int listPosition) {
return this.listaRisultati.get(listPosition);
}
@Override
public int getGroupCount() {
return this.listaRisultati.size();
}
@Override
public long getGroupId(int listPosition) {
return listPosition;
}
@Override
public View getGroupView(int listPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
Result result = (Result) getGroup(listPosition);
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) this.context.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.results_list_row, null);
}
TextView examination = (TextView) convertView
.findViewById(R.id.examination);
TextView startDate = (TextView) convertView
.findViewById(R.id.startDate);
TextView endDate = (TextView) convertView
.findViewById(R.id.endDate);
examination.setTypeface(null, Typeface.BOLD);
examination.setText(result.getInfo().getDisplayName());
startDate.setText(result.getDateStart());
endDate.setText(result.getDateEnd()!=null ? result.getDateEnd()+" " : " ");
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int listPosition, int expandedListPosition) {
return true;
}
}
我的临时解决方案是方法&#34; getChildView&#34;,如果是第一行,我可以插入一个layour,如果是另一行,我打印数据。因此,使用此代码,如果我有一个包含2个项目的ResultXResult列表(例如),我只能读取第二个项目。
有这个问题的解决方案,还是有另一种方法在子视图中插入标题?
我的标题行是黄色行&#34;参数,值....&#34;
答案 0 :(得分:0)
你是对的。为了向可扩展的Listview添加页眉和页脚,您可以进行一些修改。
getChildrenCount()
方法返回特定组中子项的行数。这里我们可以在return方法中添加两行。第一行将用于标题,第二行将用于页脚。我们可以将特定布局扩展到组的第一个(标题)和最后一个行(页脚)。
答案 1 :(得分:0)
您可以使用以下代码轻松地将标题添加到expandablelistview:
var x = 2.5;
var hours = parseInt(x);
var minutes = ( x - parseInt(x) ) * 60;
只需复制活动中的上述代码即可。在上面的代码中(R.layout.nav_header)是头的xml文件,mExpandableListView是ExpandableListView的对象。