我在 setOnItemSelectedListener
中有这个错误:
The method setOnItemSelectedListener(AdapterView.OnItemSelectedListener) in the type AdapterView is not applicable for the arguments (FragmentMain)"
fragment 类:
public class FragmentMain extends Fragment {
private Spinner countriesSpinner;
private Activity rootView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){
View rootView =inflater.inflate(R.layout.activity_main, container, false);
return rootView;
}
@Override
public void onStart() {
super.onStart();
addItemsOnSpinner();
}
public void addItemsOnSpinner() {
countriesSpinner = (Spinner) rootView.findViewById(R.id.team_list_spinner);
countriesSpinner.setOnItemSelectedListener(new CustomOnItemSelectedListener ()) ;
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getActivity(),
R.array.team_list, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
countriesSpinner.setAdapter(adapter);
countriesSpinner.setOnItemSelectedListener(this);
}
public class CustomOnItemSelectedListener extends Activity implements
OnItemSelectedListener {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos,
long id) {
// TODO Auto-generated method stub
if (parent.getItemAtPosition(pos).toString()
.equals("San Antonio Spurs")) {
Intent i = new Intent(getApplicationContext(), Spurs_games.class);
startActivity(i);
finish();}
if (parent.getItemAtPosition(pos).toString()
.equals("Los Angeles Lakers")) {
Intent i = new Intent(getApplicationContext(), Lakers_games.class);
startActivity(i);
finish();}
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
public void onItemSelected(AdapterView<?> parent, View view, int pos,
long id) {
if (parent.getItemAtPosition(pos).toString()
.equals("San Antonio Spurs")) {
Intent i = new Intent(getActivity(), Spurs_games.class);
startActivity(i);
finish();}
if (parent.getItemAtPosition(pos).toString()
.equals("Los Angeles Lakers")) {
Intent i = new Intent(getActivity(), Lakers_games.class);
startActivity(i);
finish();}
}
private void finish() {
// TODO Auto-generated method stub
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
这是我在这里的第一篇文章,所以请原谅/纠正我。 对不起我的英语..
最佳答案
setOnItemSelectedListener
如果您想在 Fragment 内的微调器上使用监听器,则必须在您的 FragmentMain
中实现,而不是在您的 Activity
中实现
在你的 FragmentMain onCreateView 中
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
...
}
输入这段代码
countriesSpinner = (Spinner) rootView.findViewById(R.id.team_list_spinner);
countriesSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
关于android - Fragment 中微调器的 setOnItemSelectedListener,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23449270/