Question

I’m currently working on a Account Management Activity for my Android application and I’m having trouble figuring out why the setSelection() method from a spinner does not trigger the OnItemSelectedListener attached to said Spinner.

Here is what I have currently;

onCreate() method :

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.account_management);

    this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

    retreiveLanguage();
    initializeUI();

    // Vérification si l'usager est déjà connecté
    Globals appState = ((Globals) this.getApplication());
    boolean userLoggedIn = appState.isUserLoggedIn();
    boolean userInfoAvailable = appState.isUserInfoAvailable();

    if (userLoggedIn && userInfoAvailable) {
      fillUI();
    }
}   

Pertinent lines from the initializeUI() method which is called on the Activity’s creation which shows the binding of the Spinner the Listener :

    /** OnItemSelectedHandler for the Country Spinner */
    mCountrySpinner.setOnItemSelectedListener(new OnItemSelectedListener() {

        public void onItemSelected(AdapterView<?> parent, View view,
                int pos, long id) {
            Log.i(TAG, "onCountrySelected() was called, position : " + pos);

            mProvinces = new ArrayList<String>();
            mProvincesCode = new ArrayList<String>();

            mXML.parseResponse(FileManager.getInstance().getPortalOptions());

            for (int i = 0; i < mXML.getCountry(pos).sizeProvinces(); i++){
                mProvinces.add(mXML.getCountry(pos).getProvince(i).getLabel(mLanguage));
                mProvincesCode.add(mXML.getCountry(pos).getProvince(i).getCode());
            }

            mProvinceArrayAdapter = new ArrayAdapter<String>(ManageAccountActivity.this, 
                    android.R.layout.simple_spinner_item, mProvinces);
            mProvinceArrayAdapter.setDropDownViewResource(
                    android.R.layout.simple_spinner_dropdown_item);
            mProvinceSpinner.setAdapter(mProvinceArrayAdapter);
        }

        public void onNothingSelected(AdapterView<?> arg0) {
            // Do Nothing ...               
        }
    });

And again another couple lines, this time from the fillUI method() :

Log.i(TAG, "Setting country based on user information.");
((Spinner) findViewById(R.id.spin_country))
    .setSelection(mCountriesCode.indexOf(mUser.getCountry()));
// TODO : Fix Provinces and States not being changed accordingly
Log.i(TAG, "Setting province based on user information.");
((Spinner) findViewById(R.id.spin_province))
    .setSelection(mProvincesCode.indexOf(mUser.getProvince())); 

So with this I would expect the OnItemSelectedListener to be called right after I set the selection in the fillUI() method, but that’s not what’s happening at runtime :S

Here’s my LogCat extract that shows that the Listener isn’t called when the selection is applied to the country spinner:

I/ManageAccountActivity(28108): Setting country based on user information.

I/ManageAccountActivity(28108): Setting province based on user information.

I/ManageAccountActivity(28108): onCountrySelected() was called, position : 1

As an experiment, I also tried putting the fillUI() call in the onStart method of my Activity but that didn’t change how the application reacted.

Thanks in advance for any pointers, help or tips !

Answer 1

Have you tried to set the spinner by using two arguments, the second using a boolean:

.setSelection(mProvincesCode.indexOf(mUser.getProvince()), true); 

From the developers page it shows:

setSelection(int position, boolean animate)
//Jump directly to a specific item in the adapter data.