可扩展列表视图中父级中的不同开关意图 - 上一个不起作用

Question

我正试图创建一个ExpandibleListView，意图切换到新的类。当只使用一个开关时，没有问题，但当我想让不同的父母切换不同的班级时，其中只有一个有效，另一个保持空白(箭头上下转动，但什么也没发生(。我怎样才能让他们一起工作？

这是我的代码：

可扩展ListAdapter.java

import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import java.util.HashMap;
import java.util.List;
import android.content.Context;
import android.widget.TextView;

public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context context;
private List<String> listDataHeader;
private HashMap<String,List<String>> listHashMap;

public ExpandableListAdapter(Context context, List<String> listDataHeader, HashMap<String, List<String>> listHashMap) {
this.context = context;
this.listDataHeader = listDataHeader;
this.listHashMap = listHashMap;
}

@Override
public int getGroupCount() {
return listDataHeader.size();
}
@Override
public int getChildrenCount(int i) {
return listHashMap.get(listDataHeader.get(i)).size();
}
@Override
public Object getGroup(int i) {
return listDataHeader.get(i);
}
@Override
public Object getChild(int i, int i1) {
return listHashMap.get(listDataHeader.get(i)).get(i1); //  i = group item , i1= ChildItem
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return i1;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int i, boolean b, View view, ViewGroup ViewGroup) {
String headerTitle = (String)getGroup(i);
if(view == null)
{
LayoutInflater inflater = (LayoutInflater)this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.list_group,null);
}
TextView lblListHeader = (TextView)view.findViewById(R.id.lblListHeader);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return view;
}
@Override
public View getChildView(int i, int i1, boolean b, View view, ViewGroup ViewGroup) {
final String childText = (String)getChild(i,i1);
if(view == null)
{
LayoutInflater inflater = (LayoutInflater)this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.list_item,null);
}
TextView txtListChild = (TextView)view.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return view;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return true;
}
}

主要活动.java

public class MainActivity extends AppCompatActivity 
{

private ExpandableListView listView;
private ExpandableListAdapter listAdapter;
private List<String> listDataHeader;
private HashMap<String,List<String>> listHash;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

listView = (ExpandableListView)findViewById(R.id.lvExp);
initData();
listAdapter = new ExpandableListAdapter(this,listDataHeader,listHash);
listView.setAdapter(listAdapter);

}
private void initData() {
listDataHeader = new ArrayList<>();
listHash = new HashMap<>();
listDataHeader.add("Line One");
listDataHeader.add("Line Two");


List<String> genel = new ArrayList<>();
**//The problem starts here**
listView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
final String selected = (String) listAdapter.getGroup(groupPosition);
Intent intent;
switch (selected) {
case "Line One":
intent = new Intent(MainActivity.this,LineOne.class);
startActivity(intent);
break;
}
return false; //return true doesn't let the other parents to open.
}
});

List<String> terims = new ArrayList<>();
listView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
final String terims = (String) listAdapter.getGroup(groupPosition);
Intent niyet;//I used "intent" instead of "niyet" as same above but nothing has changed.
switch (terims) {
case "Line Two":
niyet = new Intent(MainActivity.this, LineTwo.class);
startActivity(niyet);
break;
}
return false; 
}
});


listHash.put(listDataHeader.get(0),genel);
listHash.put(listDataHeader.get(1),terims);


}
}

Answer 1

不能设置2个OnGroupClickListener。第二个取消了第一个。您应该设置一个侦听器，然后在该侦听器中检查两组条件。