我有一个Android Spinner,当用户从弹出对话框中选择一些内容时,我想收到一个回调.它似乎setOnItemClickListener()或setOnItemSelectedListener()将是正确的使用方法,但是当我选择微调器中的一个项时,都不会被调用.
有没有正确的方法来做到这一点?
UPDATE
根据commonsware的建议,我做了以下操作,但我的onItemSelected()方法永远不会被调用:
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
}
});
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使用setOnItemSelectedListener()。这是我的一本书示例:
/***
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("");
}
}
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