<分区>
我有两个类:fragment 和 MyListAdapter(数组适配器)。
我必须在哪个类中使用方法 onItemSelected？
在 MyListAdapter 中不起作用......
这是我的代码:
数组适配器:
public class MyListAdapter extends ArrayAdapter implements AdapterView.OnItemSelectedListener {
Spinner spinner;
/*public MyListAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
}*/
public MyListAdapter(Context context) {
super(context, R.layout.single_listview_item);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
System.out.println("ciao");
spinner = (Spinner) convertView.findViewById(R.id.simpleSpinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
getContext(),
R.array.country_arrays,
android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
/*
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
*/
/* @Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
//Spinner spinner = null;
// String selState = (String) ((Spinner) parent).getSelectedItem();
spinner.setSelection(position);
String selState = (String) ( parent).getSelectedItem();
Toast.makeText(
parent.getContext(),
"Clicked on Planet: " + selState + "", Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});*/
return row;
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
spinner.setSelection(position);
String selState = spinner.getSelectedItem().toString();
System.out.println(selState);
Toast.makeText(
getContext(),
"Clicked on Planet: " + selState + "", Toast.LENGTH_SHORT).show();
/* Toast.makeText(parent.getContext(),
"OnItemSelectedListener : " + parent.getItemAtPosition(position).toString(),
Toast.LENGTH_SHORT).show();*/
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
/* @Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String selState = (String) spinner.getSelectedItem();
System.out.println(selState);
Toast.makeText(
getContext(),
"Clicked on Planet: " + selState + "", Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}*/
}
fragment :
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the custom_spinner_items for this fragment
//super.onDestroy();
SharedPreferences settings = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.clear();
editor.commit();
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_list2, container, false);
listView = (ListView) rootView.findViewById(R.id.listview);
ListAdapter listAdapter = new MyListAdapter(getContext());
listView.setAdapter(listAdapter);
