setAdapter和setDropDownViewResource由IDE

Question

写在红色

IDE说我setAdapter和setDropDownViewResource“无法解析符号”，我不知道为什么：事先大家

spinner.setAdapter(adapter); 
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 

谢谢！

我后我的代码：

public class MyListFragment extends Fragment implements 
     android.widget.CompoundButton.OnCheckedChangeListener { 

    ListView lv; 
    ArrayList<Planet> planetList; 
    static PlanetAdapter plAdapter; 
    private TextView txtName; 
    private TextView txtEmail; 
    private Button btnLogout; 
    private Spinner spinner1; 
    private Spinner spinner2; 

    private SQLiteHandler db; 
    private SessionManager session; 
    BirraAdapter biAdapter; 
    PlanetAdapter.PlanetHolder holder; 
    private static Context context = null; 
    private static FragmentActivity mInstance; 

    Integer[] imageId = { 
      R.mipmap.androtuto, 
      R.mipmap.ic_launcher, 
      R.mipmap.ic_launcher, 
      R.mipmap.ic_launcher, 
      R.mipmap.ok, 
      /*R.drawable.image6, 
      R.drawable.image7*/ 

    }; 
    String[] countryNames={"India","China","Australia","Portugle","America","New Zealand"}; 

    @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); 
     context = getActivity(); 
     mInstance = getActivity(); 
     txtName = (TextView) rootView.findViewById(R.id.name); 
     txtEmail = (TextView) rootView.findViewById(R.id.numero_telefonico); 
     btnLogout = (Button) rootView.findViewById(R.id.btnLogout); 

     // SqLite database handler 
     db = new SQLiteHandler(context.getApplicationContext()); 


     // session manager 
     session = new SessionManager(context.getApplicationContext()); 
/* 

     if (!session.isLoggedIn()) { 
      logoutUser(); 
     } 
*/ 

     // Fetching user details from SQLite 
     HashMap<String, String> user = db.getUserDetails(); 

     String name = user.get("name"); 
     //String email = user.get("email"); 
//  String email = user.get("email"); 
     String email = user.get("numero_telefonico"); 


     // Displaying the user details on the screen 
     System.out.println(name + email); 

     txtName.setText(name); 
     txtEmail.setText(email); 
    /* Button mButton = (Button) rootView.findViewById(R.id.button); 
     mButton.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       showResult(v); 


      } 
     });*/ 
     //return inflater.inflate(R.custom_spinner_items.fragment_list2, container, false); 
     btnLogout.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       logoutUser(); 
      } 
     }); 

    /* List<String> spinnerArray = new ArrayList<String>(); 
     spinnerArray.add("item1"); 
     spinnerArray.add("item2"); 

     ArrayAdapter<String> adapter = new ArrayAdapter<String>(
       this.getContext(), android.R.layout.simple_spinner_item, spinnerArray); 

     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     Spinner sItems = (Spinner) rootView.findViewById(R.id.simpleSpinner); 
     sItems.setAdapter(adapter);*/ 
     return rootView; 
    } 
    Spinner spinner = (Spinner) getView().findViewById(R.id.simpleSpinner); 
    // Create an ArrayAdapter using the string array and a default spinner layout 
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this.getContext(), 
      R.array.country_arrays, android.R.layout.simple_spinner_item); 
// Specify the layout to use when the list of choices appears 
    //adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
// Apply the adapter to the spinner 
    spinner.setAdapter(adapter); 

Answer 1

正是因为这些行应该是一些方法内。你应该改为像这样写：

@Override 
public void onActivityCreated(Bundle savedInstanceState) { 
    super.onActivityCreated(savedInstanceState); 
    Spinner spinner = (Spinner) getView().findViewById(R.id.simpleSpinner); 
    // Create an ArrayAdapter using the string array and a default spinner layout 
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this.getContext(), 
     R.array.country_arrays, android.R.layout.simple_spinner_item); 

    spinner.setAdapter(adapter); 

}