下面名为Presenteter的代码是我的主要课程,我将根据问题替换Fragment.
public class Presenteter extends AppCompatActivity {
private final Questions question1Fragment = new Questions();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.present);
FragmentTransaction ft=getSupportFragmentManager().beginTransaction();
ft.setCustomAnimations(android.R.anim.fade_in,android.R.anim.fade_out);
ft.replace(R.id.flPersonalization, question1Fragment);
ft.commit();
}
这是我的问题课.它正在从REST服务器获取问题.所有问题都列在一个微调器中.我没有在这里写它们,以免混淆您.
public class Questions extends Fragment implements AdapterView.OnItemSelectedListener {
SearchableSpinner spinner;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.question, container, false);
LinearLayout ln=(LinearLayout)view.findViewById(R.id.listLayout);
spinner=(SearchableSpinner)view.findViewById(R.id.spinner1);
}
最后,我想在Presenter类中使用Spinner的onItemSelected()事件.
我怎样才能做到这一点?
提前致谢.
解决方法:
您可以在片段中执行以下操作:
Presenteter p = (Presenteter) getActivity();
// ...
spinner.setonItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
p.yourMethod(); // call a method of your Presenteter class
}
@Override
public void onnothingSelected(AdapterView<?> parent) {
}
});
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