OnCheckChanged 侦听器仅适用于 customlistview 中的第一个复选框 [英] The OnCheckChanged listener works only for the first checkbox in a customlistview
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问题描述
我的自定义列表视图中复选框的侦听器仅适用于第一个复选框.我认为这与 getView() 中的位置有关.我在此问题中附上了我的代码,请建议我解决此问题.
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;
}
推荐答案
convertView 是每个项目的模板,只有在第一次调用 null 时,你必须为每个项目添加监听器,如下所示:
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;
}
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