主程序
[java]
package com.example.myspinner;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
public class MainActivity extends Activity {
String[] presidents;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
presidents = getResources().getStringArray(R.array.presidents_array);
Spinner s1 = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_checked,presidents);
s1.setAdapter(adapter);
s1.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
int index = arg0.getSelectedItemPosition();
Toast.makeText(getBaseContext(), "You Have Select " + presidents[index], Toast.LENGTH_LONG).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
[/java]
布局文件
[xml]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Spinner
android:id="@+id/spinner1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawSelectorOnTop="true" />
</LinearLayout>
[/xml]
资源文件
/res/values/strings.xml
[xml]
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">MySpinner</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string-array name="presidents_array">
<item>Dwight D. Eisenhower</item>
<item>John F. Kennedy</item>
<item>Lyndon B. Johnson</item>
<item>Richard Nixon</item>
<item>Gerald Ford</item>
<item>Jimmy Carter</item>
<item>Ronald Reagan</item>
<item>George H. W. Bush</item>
<item>Bill Clinton</item>
<item>George W. Bush</item>
<item>Barack Obama</item>
</string-array>
</resources>
[/xml]
效果图
