我创建了一个可扩展的列表视图,子视图有复选框,当展开父视图时,选中一个复选框,不仅选中该复选框,还选中另一个复选框。我不知道为什么以及如何解决这个问题。我在此链接中将源代码上传到 mediafire.com:
http://www.mediafire.com/?eih80athr56ejg2
这是 MainActivity.java
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SetListView();
}
private void SetListView(){
ExpandableListView lv=(ExpandableListView)findViewById(R.id.listview);
ExpAdapter adapter=new ExpAdapter(this);
lv.setAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
这是 ExpAdapter.java
public class ExpAdapter extends BaseExpandableListAdapter{
Context mContext;
int[][] data= new int[4][20];
public ExpAdapter(Context c){
mContext=c;
}
@Override
public Object getChild(int arg0, int arg1) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getChildId(int arg0, int arg1) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean arg2, View convertView,
ViewGroup parent) {
// TODO Auto-generated method stub
if(convertView==null){
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.childview,parent, false);
}
TextView tv=(TextView)convertView.findViewById(R.id.txtChild);
tv.setText("Child Position="+childPosition);
return convertView;
}
@Override
public int getChildrenCount(int arg0) {
// TODO Auto-generated method stub
return data[arg0].length;
}
@Override
public Object getGroup(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return data.length;
}
@Override
public long getGroupId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getGroupView(int groupPosition, boolean arg1, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if(convertView==null){
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.groupview,parent, false);
}
TextView tv=(TextView)convertView.findViewById(R.id.txtGroup);
tv.setText("Group Position="+groupPosition);
return convertView;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isChildSelectable(int arg0, int arg1) {
// TODO Auto-generated method stub
return false;
}