我创建了expandablelisview。如果我点击子项中的plus imageview，count的值增加1.最初所有子项的计数值为0.如果我点击第1行中的加号，则计数值从0增加到1.之后，我点击第2行意味着计数值从1增加到2.我想将计数值增加为0到1而不是第2行中的1到2
public class ExpandListAdapter extends BaseExpandableListAdapter {
private Context context;
private ArrayList<Group> groups;
ArrayList<Child> ch_list=new ArrayList<Child>();
Integer count=0;
public class ViewHolder {
TextView tv ;
ImageView food_image;
ImageView minus,plus ;
TextView item_count;
}
public ExpandListAdapter(Context context, ArrayList<Group> groups) {
this.context = context;
this.groups = groups;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<Child> chList = groups.get(groupPosition).getItems();
return chList.get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final Child child = (Child) getChild(groupPosition, childPosition);
ViewHolder viewHolder = null;
if (convertView == null) {
LayoutInflater inflator = LayoutInflater.from(parent.getContext());
convertView = inflator.inflate(R.layout.detail_list, null);
viewHolder = new ViewHolder();
viewHolder.tv = (TextView) convertView.findViewById(R.id.type);
viewHolder.food_image = (ImageView) convertView.findViewById(R.id.food_image);
viewHolder.minus = (ImageView) convertView.findViewById(R.id.minus);
viewHolder.plus = (ImageView) convertView.findViewById(R.id.plus);
viewHolder.item_count = (TextView) convertView.findViewById(R.id.count);
convertView.setTag(viewHolder);
}
else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.tv.setText(child.getName().toString());
final ViewHolder finalViewHolder = viewHolder;
viewHolder.plus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
count=count+1;
finalViewHolder.item_count.setText(count.toString());
}
});
final ViewHolder finalViewHolder1 = viewHolder;
viewHolder.minus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
count=count-1;
finalViewHolder1.item_count.setText(count.toString()); //Key -> String.valueOf(position) and Value -> int count
}
});
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
ArrayList<Child> chList = groups.get(groupPosition).getItems();
return chList.size();
}
@Override
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}
@Override
public int getGroupCount() {
return groups.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
Group group = (Group) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater inf = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inf.inflate(R.layout.group_item, null);
}
TextView tv = (TextView) convertView.findViewById(R.id.group_name);
tv.setText(group.getName());
ExpandableListView eLV = (ExpandableListView) parent;
int count = getGroupCount();
if(count<1){
eLV.expandGroup(groupPosition);
// eLV.setGroupIndicator(null);
}
return convertView;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
Logcat错误`
FATAL EXCEPTION: main
Process: abservetech.com.foodapp, PID: 1807
android.content.res.Resources$NotFoundException: Unable to find resource ID #0x1
at android.content.res.Resources.getResourcePackageName(Resources.java:1871)
at android.content.res.SPRDResources.getThemeResources(SPRDResources.java:94)
at android.content.res.SPRDResources.getText(SPRDResources.java:155)
at android.support.v7.widget.ResourcesWrapper.getText(ResourcesWrapper.java:52)
at android.widget.TextView.setText(TextView.java:3927)
at abservetech.com.foodapp.ExpandListAdapter$1.onClick(ExpandListAdapter.java:99)
at android.view.View.performClick(View.java:4446)
at android.view.View$PerformClick.run(View.java:18437)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5372)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:970)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:786)
at dalvik.system.NativeStart.main(Native Method)
`
答案 0 :(得分：0)
将count变量定义为不是类中的全局变量，而是定义为getChildView中的本地变量。您可以在每行或其他内容中显示它。但是这样，它对每一行都是唯一的，而不是适配器的全局。
编辑：
在适配器中创建一个Integer Array全局
int[] myIntegerArray = new int[size];
整数数组按照here的规定启动为0。 您现在只需要在getChildView内部执行onClickListener：
myIntegerArray[childPosition] += 1
finalViewHolder.item_count.setText(Integer.toString(myIntegerArray[childPosition]));