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我在片段菜单中使用微调,在onCreateView中加载其数据。它在应用程序启动时工作正常,但是,当用户导航到不同的片段并返回时或下次打开应用程序时,微调器消失。setOnItemSelectedListener似乎只在第一次启动应用程序时才起作用
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
setHasOptionsMenu(true);
getSpinnerValues(); //string request to add values to TrailList
}
@Override // ...
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.map_menu, menu);
super.onCreateOptionsMenu(menu, inflater); //temp
//setData();
final MenuItem item = menu.findItem(R.id.trailfiller);
mySpinner = (Spinner) MenuItemCompat.getActionView(item);
ArrayAdapter<Trail> adapter = new ArrayAdapter<Trail>(getContext(), android.R.layout.simple_spinner_dropdown_item, TrailList);
mySpinner.setAdapter(adapter);
mySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Trail country = (Trail) parent.getSelectedItem();
Toast.makeText(getContext(), ""+country.getId()+""+country.getName(), Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
此刻却一片空白,该onItemSelected是没有得到触发either.Strange一点要注意的是微调是一致的,当值是硬编码。我在这里错过了什么?