How to get a callback when a Spinner popup dialog is dismissed?

问题

I have an Android Spinner and I'd like to get a callback when the user selects something from its popup dialog. It seems like setOnItemClickListener() or setOnItemSelectedListener() would be the right method to use, but neither get invoked when I select one of the items in the spinner.

Is there a correct way to do this?

UPDATE

Per commonsware's suggestion, I did the following, but my onItemSelected() method is never being called:

    final Spinner spinner = (Spinner) findViewById(R.id.spinner);

    spinner.setAdapter( new ArrayAdapter<SettingValue>(getContext(), android.R.layout.simple_list_item_1, android.R.id.text1, setting.getSettingValues() ) );
    spinner.setOnItemSelectedListener( new OnItemSelectedListener() {

        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            Log.d("BOOGA");
            final SettingValue settingValue = (SettingValue)parent.getSelectedItem();
            final Editor edit = getContext().getSharedPreferences( PREFS_CONTEXT_NAME, Context.MODE_PRIVATE).edit();
            edit.putString(setting.name(), settingValue.name());
            edit.commit();
        }

        public void onNothingSelected(AdapterView<?> parent) {
            // do nothing
        }

    });

回答1:

Use setOnItemSelectedListener(). Here is one of my book examples:

/***
    Copyright (c) 2008-2009 CommonsWare, LLC

    Licensed under the Apache License, Version 2.0 (the "License"); you may
    not use this file except in compliance with the License. You may obtain
    a copy of the License at
        http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

package com.commonsware.android.selection;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class SpinnerDemo extends Activity
    implements AdapterView.OnItemSelectedListener {
    TextView selection;
    String[] items={"lorem", "ipsum", "dolor", "sit", "amet",
                    "consectetuer", "adipiscing", "elit", "morbi", "vel",
                    "ligula", "vitae", "arcu", "aliquet", "mollis",
                    "etiam", "vel", "erat", "placerat", "ante",
                    "porttitor", "sodales", "pellentesque", "augue", "purus"};

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        selection=(TextView)findViewById(R.id.selection);

        Spinner spin=(Spinner)findViewById(R.id.spinner);
        spin.setOnItemSelectedListener(this);

        ArrayAdapter<String> aa=new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, items);

        aa.setDropDownViewResource(
            android.R.layout.simple_spinner_dropdown_item);
        spin.setAdapter(aa);
    }

    public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {
        selection.setText(items[position]);
    }

    public void onNothingSelected(AdapterView<?> parent) {
        selection.setText("");
    }
}

来源：https://stackoverflow.com/questions/1653100/how-to-get-a-callback-when-a-spinner-popup-dialog-is-dismissed

标签

android

spinner