本文介绍了如何添加图像expandablelistivew？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是用我的项目expandablelistview，我要为组视图中添加不同的图像，并在子视图我想要做的一样，但它不工作，以下是我的code ..
MainActivity.java
公共类MainActivity延伸活动{
ExpandableTests listAdapter;
ExpandableListView expListView;
名单＆LT;字符串＆GT; listDataHeader;
HashMap的＆LT;字符串列表与LT;字符串＆GT;＆GT; listDataChild;
私人列表＆LT;整数GT;组;
私人的HashMap＆LT;整数，列表和LT;整数GT;＆GT;儿童;
Expandableimageadapter imgsadadapter;
公开名单＆LT;整数GT; groupImages;
公众的HashMap＆LT;整数，列表和LT;整数GT;＆GT; childImages;
@覆盖
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）;
//获取列表视图
expListView =（ExpandableListView）findViewById（R.id.lvExp）;
// preparing列表数据
prepareListData（）;
expListView.setGroupIndicator（空）;
// imgsadadapter =新Expandableimageadapter（这一点，groupImages，childImages）;
// listAdapter =新ExpandableTests（这一点，listDataHeader，组，listDataChild，儿童）;
listAdapter =新ExpandableTests（这一点，listDataHeader，groupImages，listDataChild，childImages）;
//设置列表适配器
expListView.setAdapter（listAdapter）;
//expListView.setAdapter(imgsadadapter）;
//列表视图组单击监听器
expListView.setOnGroupClickListener（新OnGroupClickListener（）{
@覆盖
公共布尔onGroupClick（ExpandableListView父，视图V，
INT groupPosition，长ID）{
// Toast.makeText（getApplicationContext（），
//集团已点击+ listDataHeader.get（groupPosition）
// Toast.LENGTH_SHORT）.show（）;
返回false;
}
}）;
//列表视图集团扩大监听器
expListView.setOnGroupExpandListener（新OnGroupExpandListener（）{
@覆盖
公共无效onGroupExpand（INT groupPosition）{
Toast.makeText（getApplicationContext（），
listDataHeader.get（groupPosition）+膨胀，
Toast.LENGTH_SHORT）.show（）;
}
}）;
//列表视图组collasped监听器
expListView.setOnGroupCollapseListener（新OnGroupCollapseListener（）{
@覆盖
公共无效onGroupCollapse（INT groupPosition）{
Toast.makeText（getApplicationContext（），
listDataHeader.get（groupPosition）+坍塌，
Toast.LENGTH_SHORT）.show（）;
}
}）;
//列表视图儿童点击监听器
expListView.setOnChildClickListener（新OnChildClickListener（）{
@覆盖
公共布尔onChildClick（ExpandableListView父，视图V，
INT groupPosition，诠释childPosition，长ID）{
// TODO自动生成方法存根
Toast.makeText（
getApplicationContext（），
listDataHeader.get（groupPosition）
+：
+ listDataChild.get（
listDataHeader.get（groupPosition））。得到（
childPosition），Toast.LENGTH_SHORT）
。显示（）;
返回false;
}
}）;
}
/ *
* preparing列表数据
* /
私人无效prepareListData（）{
groupImages =新的ArrayList＆LT;整数GT;（）;
groupImages.add（R.drawable.adminsetting）;
groupImages.add（R.drawable.productcategory）;
// groupImages.add（R.drawable.drinks）;
// groupImages.add（R.drawable.deserts）;
childImages =新的HashMap＆LT;整数，列表和LT;整数GT;＆GT;（）;
名单＆LT;整数GT; Maincat =新的ArrayList＆LT;整数GT;（）;
Maincat.add（R.drawable.productcategory）;
Maincat.add（R.drawable.productcategory）;
Maincat.add（R.drawable.productcategory）;
Maincat.add（R.drawable.productcategory）;
Maincat.add（R.drawable.productcategory）;
// vegetablesi.add（R.drawable.Onions）;
// vegetablesi.add（R.drawable.Garlic）;
名单＆LT;整数GT; subcat =新的ArrayList＆LT;整数GT;（）;
subcat.add（R.drawable.productcategory）;
subcat.add（R.drawable.productcategory）;
subcat.add（R.drawable.productcategory）;
subcat.add（R.drawable.productcategory）;
// fruitsi.add（R.drawable.Kiwifruit）;
// fruitsi.add（R.drawable.Grape）;
/ *名单，其中，整数GT; drinksi =新的ArrayList＆LT;整数GT;（）;
drinksi.add（R.drawable.Vodka）;
drinksi.add（R.drawable.Milk）;
drinksi.add（R.drawable.Water）;
drinksi.add（R.drawable.CocaCola）;
drinksi.add（R.drawable.Sprite）;
名单＆LT;整数GT; desertsi =新的ArrayList＆LT;整数GT;（）;
desertsi.add（R.drawable.Vodka）;
desertsi.add（R.drawable.Milk）;
desertsi.add（R.drawable.Water）;
desertsi.add（R.drawable.CocaCola）;
desertsi.add（R.drawable.Sprite）; * /
// childImages.put（groupImages.get（0），Maincat）;
// childImages.put（groupImages.get（1），subcat）;
childImages.put（0，Maincat）;
childImages.put（1，subcat）;
listDataHeader =新的ArrayList＆LT;字符串＆GT;（）;
listDataChild =新的HashMap＆LT;字符串列表与LT;字符串＆GT;＆GT;（）;
//添加子数据
listDataHeader.add（管理设置）;
listDataHeader.add（产品＆安培;类别）;
listDataHeader.add（客户和订单）;
//添加子数据
名单＆LT;字符串＆GT; TOP250 =新的ArrayList＆LT;字符串＆GT;（）;
top250.add（国城）;
top250.add（销售人员）;
top250.add（城销售人员）;
top250.add（产品Boxtype）;
top250.add（船承运人）;
//top250.add("The黑暗骑士）;
// top250.add（12怒汉）;
名单＆LT;字符串＆GT; nowShowing =新的ArrayList＆LT;字符串＆GT;（）;
nowShowing.add（产品）;
nowShowing.add（类别）;
nowShowing.add（类产品）;
nowShowing.add（产品分类）;
//nowShowing.add("Red 2）;
//nowShowing.add("The金刚狼）;
名单＆LT;字符串＆GT; comingSoon =新的ArrayList＆LT;字符串＆GT;（）;
comingSoon.add（客户）;
comingSoon.add（客户端产品）;
comingSoon.add（客户订单）;
comingSoon.add（客户订单交货）;
//comingSoon.add("Europa报告）;
listDataChild.put（listDataHeader.get（0），TOP250）; //头，子数据
listDataChild.put（listDataHeader.get（1），nowShowing）;
listDataChild.put（listDataHeader.get（2），comingSoon）;
}
ExpandableTests.java
公共类ExpandableTests扩展BaseExpandableListAdapter {
私人语境_context;
私人列表＆LT;整数GT; _组;
私人的HashMap＆LT;整数，列表和LT;整数GT;＆GT; _儿童;
私人列表＆LT;字符串＆GT; _listDataHeader; //标题标题
//子数据的标题标题格式，子标题
私人的HashMap＆LT;字符串列表与LT;字符串＆GT;＆GT; _listDataChild;
公共ExpandableTests（上下文的背景下，列表与LT;字符串＆GT; listDataHeader，名单，其中，整数基团，
HashMap的＆LT;字符串列表与LT;字符串＆GT;＆GT; listDataChild，HashMap的＆LT;整数，列表和LT;整数GT;＆GT;儿童） {
this._context =背景;
this._listDataHeader = listDataHeader;
this._listDataChild = listDataChild;
this._group =组;
this._Child =儿童;
}
@覆盖
公共对象getChild（INT groupPosition，诠释childPosititon）{
返回this._listDataChild.get（this._listDataHeader.get（groupPosition））
获得（childPosititon）;
// this._Child.get（this._group.get（groupPosition））得到（childPosititon）。
}
@覆盖
众长getChildId（INT groupPosition，诠释childPosition）{
返回childPosition;
}
@覆盖
公共查看getChildView（INT groupPosition，最终诠释childPosition，
布尔isLastChild，查看convertView，ViewGroup中父）{
最后弦乐childText =（字符串）getChild（groupPosition，childPosition）;
//最终诠释childimg =（整数）getChild（groupPosition，childPosition）;
如果（convertView == NULL）{
LayoutInflater infalInflater =（LayoutInflater）this._context
.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
convertView = infalInflater.inflate（R.layout.list_item，NULL）;
}
TextView的txtListChild =（TextView中）convertView.findViewById（R.id.lblListItem）;
txtListChild.setText（childText）;
ImageView的imgListChild =（ImageView的）convertView.findViewById（R.id.childsid）;
最终诠释childimg = _Child.get（groupPosition）获得（childPosition）;
imgListChild.setImageResource（childimg）;
//imgListChild.setImageResource(childimg）;
/ *的ImageView ImageView的=（ImageView的）convertView.findViewById（R.id.childsid）;
最终诠释imageId = this.childImages.get（this.groupImages.get（groupPosition））得到（childPosition）。
imageView.setImageResource（imageId）; * /
返回convertView;
}
@覆盖
公众诠释getChildrenCount（INT groupPosition）{
返回this._listDataChild.get（this._listDataHeader.get（groupPosition））
。尺寸（）;
}
@覆盖
公共对象getGroup（INT groupPosition）{
返回this._listDataHeader.get（groupPosition）;
}
@覆盖
公众诠释getGroupCount（）{
返回this._listDataHeader.size（）;
}
@覆盖
众长getGroupId（INT groupPosition）{
返回groupPosition;
}
@覆盖
公共查看getGroupView（INT groupPosition，布尔isExpanded，
查看convertView，ViewGroup中父）{
字符串headerTitle =（字符串）getGroup（groupPosition）;
// INT headerimg =（整数）getGroup（groupPosition）;
如果（convertView == NULL）{
LayoutInflater infalInflater =（LayoutInflater）this._context
.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
convertView = infalInflater.inflate（R.layout.list_group，NULL）;
}
TextView的lblListHeader =（TextView中）convertView
.findViewById（R.id.lblListHeader）;
// lblListHeader.setTypeface（空，Typeface.BOLD）;
lblListHeader.setText（headerTitle）;
ImageView的imgsListHeader =（ImageView的）convertView
.findViewById（R.id.gropids）;
INT headerimg = _group.get（groupPosition）;
imgsListHeader.setImageResource（headerimg）;
// lblListHeader.setTypeface（空，Typeface.BOLD）;
//imgsListHeader.setImageResource(R.drawable.ic_launcher）;
/ *的ImageView ImageView的=（ImageView的）convertView.findViewById（R.id.gropids）;
INT imageId = this.groupImages.get（groupPosition）;
imageView.setImageResource（imageId）; * /
返回convertView;
}
@覆盖
公共布尔hasStableIds（）{
返回false;
}
@覆盖
公共布尔isChildSelectable（INT groupPosition，诠释childPosition）{
返回true;
}
解决方案
更换遵循getChildView与previous一行
最终诠释childimg = _Child.get（groupPosition）获得（childPosition）;
imgListChild.setImageResource（childimg）;
更换遵循getGroupView与previous一行
INT headerimg = _group.get（groupPosition）;
imgsListHeader.setImageResource（headerimg）;
替换以下行MainActivity
listAdapter =新ExpandableTests（这一点，listDataHeader，groupImages，listDataChild，childImages）;
再添加一个形象
groupImages在prepareListData方法的ArrayList
替换以下行
childImages.put（groupImages.get（0），Maincat）;
childImages.put（groupImages.get（1），subcat）;
要
childImages.put（0，Maincat）;
childImages.put（1，subcat）;
对于指示器图标
添加下面的ExpandableTests在getGroupView（）行
ImageView的imgIndicator =（ImageView的）convertView.findViewById（R.id.indicator）;
如果（isExpanded）{
imgIndicator.setImageResource（R.drawable.minus）;
} 其他 {
imgIndicator.setImageResource（R.drawable.plus）;
}
添加下面的ImageView在list_group.xml
＆LT; ImageView的
机器人：ID =@ + ID /指示器
机器人：layout_width =24sp
机器人：layout_height =24sp
机器人：layout_alignParentRight =真
/＆GT;
I am using expandablelistview in my project,and I want to add different images for group view and also in child view I want to do same,but its not working,following is my code..
MainActivity.java
public class MainActivity extends Activity {
ExpandableTests listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
private List<Integer> group;
private HashMap<Integer, List<Integer>> Child;
Expandableimageadapter imgsadadapter;
public List<Integer> groupImages;
public HashMap<Integer, List<Integer>> childImages;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the listview
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// preparing list data
prepareListData();
expListView.setGroupIndicator(null);
//imgsadadapter=new Expandableimageadapter(this, groupImages, childImages);
// listAdapter = new ExpandableTests(this, listDataHeader, group, listDataChild, Child);
listAdapter = new ExpandableTests(this, listDataHeader, groupImages, listDataChild, childImages);
// setting list adapter
expListView.setAdapter(listAdapter);
//expListView.setAdapter(imgsadadapter);
// Listview Group click listener
expListView.setOnGroupClickListener(new OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
// Toast.makeText(getApplicationContext(),
// "Group Clicked " + listDataHeader.get(groupPosition),
// Toast.LENGTH_SHORT).show();
return false;
}
});
// Listview Group expanded listener
expListView.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Expanded",
Toast.LENGTH_SHORT).show();
}
});
// Listview Group collasped listener
expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
Toast.makeText(getApplicationContext(),
listDataHeader.get(groupPosition) + " Collapsed",
Toast.LENGTH_SHORT).show();
}
});
// Listview on child click listener
expListView.setOnChildClickListener(new OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
// TODO Auto-generated method stub
Toast.makeText(
getApplicationContext(),
listDataHeader.get(groupPosition)
+ " : "
+ listDataChild.get(
listDataHeader.get(groupPosition)).get(
childPosition), Toast.LENGTH_SHORT)
.show();
return false;
}
});
}
/*
* Preparing the list data
*/
private void prepareListData() {
groupImages= new ArrayList<Integer>();
groupImages.add(R.drawable.adminsetting);
groupImages.add(R.drawable.productcategory);
// groupImages.add(R.drawable.drinks);
// groupImages.add(R.drawable.deserts);
childImages = new HashMap<Integer, List<Integer>>();
List<Integer> Maincat = new ArrayList<Integer>();
Maincat.add(R.drawable.productcategory);
Maincat.add(R.drawable.productcategory);
Maincat.add(R.drawable.productcategory);
Maincat.add(R.drawable.productcategory);
Maincat.add(R.drawable.productcategory);
// vegetablesi.add(R.drawable.Onions);
// vegetablesi.add(R.drawable.Garlic);
List<Integer> subcat = new ArrayList<Integer>();
subcat.add(R.drawable.productcategory);
subcat.add(R.drawable.productcategory);
subcat.add(R.drawable.productcategory);
subcat.add(R.drawable.productcategory);
// fruitsi.add(R.drawable.Kiwifruit);
// fruitsi.add(R.drawable.Grape);
/* List<Integer> drinksi = new ArrayList<Integer>();
drinksi.add(R.drawable.Vodka);
drinksi.add(R.drawable.Milk);
drinksi.add(R.drawable.Water);
drinksi.add(R.drawable.CocaCola);
drinksi.add(R.drawable.Sprite);
List<Integer> desertsi = new ArrayList<Integer>();
desertsi.add(R.drawable.Vodka);
desertsi.add(R.drawable.Milk);
desertsi.add(R.drawable.Water);
desertsi.add(R.drawable.CocaCola);
desertsi.add(R.drawable.Sprite);*/
// childImages.put(groupImages.get(0), Maincat);
// childImages.put(groupImages.get(1), subcat);
childImages.put(0, Maincat);
childImages.put(1, subcat);
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Admin Setting");
listDataHeader.add("Product & Category");
listDataHeader.add("Client & Orders");
// Adding child data
List<String> top250 = new ArrayList<String>();
top250.add("State City");
top250.add("Sales Person");
top250.add("City Sales Person");
top250.add("Product Boxtype");
top250.add("Shipping Carrier");
//top250.add("The Dark Knight");
// top250.add("12 Angry Men");
List<String> nowShowing = new ArrayList<String>();
nowShowing.add("Product");
nowShowing.add("Category");
nowShowing.add("Category Products");
nowShowing.add("Product Categories");
//nowShowing.add("Red 2");
//nowShowing.add("The Wolverine");
List<String> comingSoon = new ArrayList<String>();
comingSoon.add("Client");
comingSoon.add("Client Products");
comingSoon.add("Client Orders");
comingSoon.add("Client Orders Delivery");
//comingSoon.add("Europa Report");
listDataChild.put(listDataHeader.get(0), top250); // Header, Child data
listDataChild.put(listDataHeader.get(1), nowShowing);
listDataChild.put(listDataHeader.get(2), comingSoon);
}
ExpandableTests.java
public class ExpandableTests extends BaseExpandableListAdapter{
private Context _context;
private List<Integer> _group;
private HashMap<Integer, List<Integer>> _Child;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public ExpandableTests(Context context, List<String> listDataHeader,List<Integer> group,
HashMap<String, List<String>> listDataChild, HashMap<Integer, List<Integer>> Child) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listDataChild;
this._group=group;
this._Child=Child;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
// this._Child.get(this._group.get(groupPosition)).get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
// final int childimg = (Integer) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListChild = (TextView) convertView.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
ImageView imgListChild = (ImageView) convertView.findViewById(R.id.childsid);
final int childimg = _Child.get(groupPosition).get(childPosition);
imgListChild.setImageResource(childimg);
//imgListChild.setImageResource(childimg);
/*ImageView imageView = (ImageView) convertView.findViewById(R.id.childsid);
final int imageId = this.childImages.get(this.groupImages.get(groupPosition)).get(childPosition);
imageView.setImageResource(imageId);*/
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
//int headerimg = (Integer) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
// lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
ImageView imgsListHeader = (ImageView) convertView
.findViewById(R.id.gropids);
int headerimg = _group.get(groupPosition);
imgsListHeader.setImageResource(headerimg);
// lblListHeader.setTypeface(null, Typeface.BOLD);
//imgsListHeader.setImageResource(R.drawable.ic_launcher);
/*ImageView imageView = (ImageView) convertView.findViewById(R.id.gropids);
int imageId = this.groupImages.get(groupPosition);
imageView.setImageResource(imageId);*/
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
解决方案
Replace following line with previous one in getChildView
final int childimg = _Child.get(groupPosition).get(childPosition);
imgListChild.setImageResource(childimg);
Replace following line with previous one in getGroupView
int headerimg = _group.get(groupPosition);
imgsListHeader.setImageResource(headerimg);
Replace following line MainActivity
listAdapter = new ExpandableTests(this, listDataHeader, groupImages, listDataChild, childImages);
Add one more image in
groupImages arraylist in prepareListData method
Replace following lines
childImages.put(groupImages.get(0), Maincat);
childImages.put(groupImages.get(1), subcat);
To
childImages.put(0, Maincat);
childImages.put(1, subcat);
For Indicator icon
Add following line in getGroupView() in ExpandableTests
ImageView imgIndicator = (ImageView) convertView.findViewById(R.id.indicator);
if (isExpanded) {
imgIndicator.setImageResource(R.drawable.minus);
} else {
imgIndicator.setImageResource(R.drawable.plus);
}
Add following imageview in list_group.xml
<ImageView
android:id="@+id/indicator"
android:layout_width="24sp"
android:layout_height="24sp"
android:layout_alignParentRight="true"
/>
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