问题
The listener for checkbox in my custom listview works only for the first checkbox. I think this has something to do with the position in getView(). I'm attaching my code with this question please suggest me a work around for this problem.
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
LayoutInflater inflater = context.getLayoutInflater();
if(convertView==null)
{
convertView = inflater.inflate(R.layout.custom_list, null);
holder = new ViewHolder();
holder.txtViewTitle = (TextView) convertView.findViewById(R.id.title_text);
holder.txtViewDescription = (TextView)convertView.findViewById(R.id.description_text);
holder.cb=(CheckBox) convertView.findViewById(R.id.cb);
convertView.setTag(holder);
holder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
String Channel=holder.txtViewTitle.getText().toString();
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(position==0)
{
//works
}
else
if(position==1)
{
//doesn't work
}
});
}
else
{
holder=(ViewHolder)convertView.getTag();
}
holder.txtViewTitle.setText(title[position]);
holder.txtViewDescription.setText(description[position]);
holder.txtViewDescription.setFocusable(false);
holder.txtViewTitle.setFocusable(false);
return convertView;
}
回答1:
convertView is a temlate for every item and only at the first call null, you have to add the Listener for each item like this:
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder holder;
LayoutInflater inflater = context.getLayoutInflater();
if(convertView==null)
{
convertView = inflater.inflate(R.layout.custom_list, null);
holder = new ViewHolder();
holder.txtViewTitle = (TextView) convertView.findViewById(R.id.title_text);
holder.txtViewDescription = (TextView)
convertView.findViewById(R.id.description_text);
holder.cb=(CheckBox) convertView.findViewById(R.id.cb);
convertView.setTag(holder);
} else {
holder=(ViewHolder)convertView.getTag();
}
holder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
String Channel=holder.txtViewTitle.getText().toString();
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(position==0)
{
//works
}else if(position==1){
//doesn't work
}
});
holder.txtViewTitle.setText(title[position]);
holder.txtViewDescription.setText(description[position]);
holder.txtViewDescription.setFocusable(false);
holder.txtViewTitle.setFocusable(false);
return convertView;
}
来源:https://stackoverflow.com/questions/9306726/the-oncheckchanged-listener-works-only-for-the-first-checkbox-in-a-customlistvie