本可循环显示图像的Android Gallery组件

在main.xml文件中定义的Gallery和ImageSwitcher组件的代码如下：

< !--< br /> < br /> Code highlighting produced by Actipro CodeHighlighter (freeware)< br /> http://www.CodeHighlighter.com/< br /> < br /> -->< ?xml version="1.0" encoding="utf-8"?>

< LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical" android:layout_width="fill_parent"

android:layout_height="fill_parent">

< Gallery android:id="@+id/gallery" android:layout_width="fill_parent"

android:layout_height="wrap_content" android:layout_marginTop="30dp" />

< ImageSwitcher android:id="@+id/imageswitcher"

android:layout_width="fill_parent" android:layout_height="wrap_content"

android:layout_marginTop="30dp" />

< /LinearLayout>

本例中Main类的完整代码如下：

package net.blogjava.mobile;

import android.app.Activity;

import android.content.Context;

import android.content.res.TypedArray;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.view.animation.AnimationUtils;

import android.widget.AdapterView;

import android.widget.BaseAdapter;

import android.widget.Gallery;

import android.widget.ImageSwitcher;

import android.widget.ImageView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.Gallery.LayoutParams;

import android.widget.ViewSwitcher.ViewFactory;

public class Main extends Activity implements OnItemSelectedListener,

ViewFactory

{

private Gallery gallery;

private ImageSwitcher imageSwitcher;