Eclipse 开发 Android, Hello Spinner（ 学习10 ）

HelloSpinner.java 源码

package com.example.test;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class HelloSpinner extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);
	    setContentView(R.layout.main);

	    Spinner s = (Spinner) findViewById(R.id.spinner);
	    ArrayAdapter adapter = ArrayAdapter.createFromResource(
	            this, R.array.planets, android.R.layout.simple_spinner_item);
	    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
	    s.setAdapter(adapter);
	}

}

 layout->main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:padding="10dip"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dip"
        android:text="Please select a planet:"
    />

    <Spinner 
        android:id="@+id/spinner"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:drawSelectorOnTop="true"
        android:prompt="@string/planet_prompt"
    />

</LinearLayout>

 values->arrays.xml

<resources>

    <string-array name="planets">
        <item>Mercury</item>
        <item>Venus</item>
        <item>Earth</item>
        <item>Mars</item>
        <item>Jupiter</item>
        <item>Saturn</item>
        <item>Uranus</item>
        <item>Neptune</item>
    </string-array>
    
</resources>

 value->strings.xml

 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, HelloSpinner!</string>
    <string name="app_name">HelloSpinner</string>
	<string name="planet_prompt">Choose a planet</string>
</resources>

 

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