我正在尝试使用多个checkboxes
读取列表中的联系人,但是当我调用sparsebooleanarray
时,它只会为所有列表条目返回false,即使是一个检查...我查看了这个帖子Why is ListView.getCheckedItemPositions() not returning correct values? ...但是当我实现addClickHandlerToCheckBox时,它会停止..这已经困扰了我4天..请任何帮助..
public void populateContactList() {
// Build adapter with contact entries
final Cursor cursor = getContacts();
String[] fields = new String[] {
ContactsContract.Data.DISPLAY_NAME
};
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
fields, new int[] {R.id.contactEntryText});
mContactList.setAdapter(adapter);
mContactList.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
proceedButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
SparseBooleanArray checked=mContactList.getCheckedItemPositions();
int len = mContactList.getCount();
for(int i=0;i<len;i++)
{
if(checked.get(i)==true)
{
String item = mContactList.getAdapter().getItem(checked.keyAt(i)).toString();
edt.append(","+item);
}
}
}
});
}
答案 0 :(得分:1)
我认为您应该使用列表适配器视图。
它将提供一个onCheckedChanged监听器,因此您也将获得该位置。
...一样
holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int cupos = position+1;
}
});
现在看一下整个例子:
Listview.setAdapter(new settingsBase(getApplicationContext()));
private class settingsBase extends BaseAdapter{
public settingsBase(Context context) {
layoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return listview.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder ;
holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int cupos = position+1;
}
});
return convertView;
}
class ViewHolder{
TextView txtSettingname , txtShow ;
RadioButton radioButton ;
}
}
试试这个 - 它会帮助你获得位置,无论是真还是假。