下拉列表(Spinner)

xml

------------------------

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

<Spinner android:id="@+id/spinner1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></Spinner>
<Spinner android:id="@+id/spinner2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
></Spinner>
</LinearLayout>

 

 

java

---------------------

package com.example.huanglifeng.menudemo;

import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.SimpleAdapter;
import android.widget.Spinner;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

public class MainActivity extends Activity {

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//第一个下拉列表框设置
Spinner spinner1 = (Spinner)findViewById(R.id.spinner1);
String[] applicationNames = new String[]{
"Android",
"window mobile",
"iphone",
"blackberry",
"QQphone"
};
ArrayAdapter<String> aaAdapter = new ArrayAdapter<String>(this, R.layout.item, applicationNames);
//aaAdapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item);
spinner1.setAdapter(aaAdapter);

Spinner spinner2 = (Spinner) findViewById(R.id.spinner2);
final List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
Map<String, Object> item1 = new HashMap<String, Object>();
item1.put(
"lvLogo", R.drawable.smile
);
item1.put(
"tvApplicationName",
"多功能日历"
);
Map<String, Object> item2 = new HashMap<String, Object>();
item2.put(
"lvLogo",
R.drawable.smile
);
item2.put(
"tvApplicationName",
"eoeMarket客户端"
);
items.add(item1);
items.add(item2);

SimpleAdapter simpleAdapter = new SimpleAdapter(
this,
items,
R.layout.item,
new String[]{"lvLogo", "tvApplicationName"},
new int[]{R.id.lvLogo, R.id.tvApplicationName}
);
spinner2.setAdapter(simpleAdapter);
spinner2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
new AlertDialog.Builder(view.getContext()).setTitle(items.get(position).get("tvApplicationName").toString())
.setIcon(Integer.parseInt(items.get(position).get("lvLogo").toString()))
.show();
}

@Override
public void onNothingSelected(AdapterView<?> parent) {

}
});

}

}