I have a listView that by way of an ArrayAdapter is populated by small xml sub views. each small view only has two things inside, a checkbox and a string label next to it.
i want to set an onCheckedChanged listener to capture the event of the user checking or unchecking the checkboxes.
for example the listener shown here:
listView.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
Toast.makeText(this, "box has been checked", Toast.LENGTH_SHORT).show();
}
}
where do I put the listener code? and how do I set it up?
code for the ArrayAdapter:
public class MobileArrayAdapter extends ArrayAdapter<CheckBoxInfo>{
CheckBoxInfo[] objects;
Context context;
int textViewResourceId;
public MobileArrayAdapter(Context context, int textViewResourceId,
CheckBoxInfo[] objects) {
super(context, textViewResourceId, objects);
this.context = context;
this.textViewResourceId = textViewResourceId;
this.objects = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row_layout_view = convertView;
if ((row_layout_view == null)){
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row_layout_view = inflater.inflate(R.layout.row_layout, null);
}
//CheckBoxInfo item = objects.get(position); // for arrayList
CheckBoxInfo item = objects[position];
if(item != null){
TextView textView = (TextView) row_layout_view.findViewById(R.id.textView1);
CheckBox checkBox = (CheckBox) row_layout_view.findViewById(R.id.checkBox1);
if(item !=null){
textView.setText(item.checkBoxName);
checkBox.setChecked(item.checkBoxState);
}
}
return row_layout_view;
}
}
Do not use your example listView.setOnCheckedChangeListener
or onCheckedChanged
code.
First of all, for CheckBox
, you should use setOnClickListener()
instead of setOnCheckedChangeListener()
. You can get the checked state inside of the onClick()
function.
Second, place your setOnClickListener()
inside of the getView()
function of the list adapter.
Example:
checkBox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
final boolean isChecked = checkBox.isChecked();
// Do something here.
}
});