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我有一个微调(choice1)从数据库中获取它的值,我希望第二个微调(选择2)只有在第一个微调被选中后才可用。此外,'course'的值需要传递给choice2适配器。启用第二次微调一次第一次微调 - Android
public class EventFragment extends Fragment {
private int index;
private Context ctx;
private Spinner choice1;
private Spinner choice2;
View v;
........................
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
v = inflater.inflate(R.layout.event_fragment, null);
this.ctx = getActivity();
.......................
choice1 = (Spinner) v.findViewById(R.id.courseSpinner);
ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(ctx,
android.R.layout.simple_spinner_item, db.getAllCourses());
dataAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
choice1.setAdapter(dataAdapter1);
String course;
course = choice1.getItemAtPosition(choice1.getSelectedItemPosition()).toString();
//使第二离心器与
choice2 = (Spinner) v.findViewById(R.id.dateSpinner);
ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(ctx,
android.R.layout.simple_spinner_item, db.getCourseDates(course));
dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
choice2.setAdapter(dataAdapter2);