在手机的桌面实现三屏页面滑动显示方式实现如下：
注意长方形中的图表变化
主要的布局文件如下：
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/guidePages"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/viewGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="30dp"
android:gravity="center_horizontal"
android:orientation="horizontal" >
</LinearLayout>
</RelativeLayout>
</FrameLayout>
主要的代码文件如下：
package com.easyway.guide;
import android.app.Activity;
import android.os.Bundle;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.widget.ImageView;
/**
* 使用Android-suport-v4.jar中android的扩展功能ViewPager实现左右滑动的切换的功能
* 此种功能在智能机的桌面应用中多屏信息的展示中使用
*
* @Title:
* @Description: 实现TODO
* @Copyright:Copyright (c) 2011
* @Company:易程科技股份有限公司
* @Date:2012-7-16
* @author longgangbai
* @version 1.0
*/
public class AndroidGuideViewActivityActivity extends Activity {
private ViewPager viewPager;
private ArrayList<View> pageViews;
private ViewGroup main, group;
private ImageView imageView;
private ImageView[] imageViews;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
//获取页面的布局
LayoutInflater inflater = getLayoutInflater();
pageViews = new ArrayList<View>();
pageViews.add(inflater.inflate(R.layout.list_item0, null));
pageViews.add(inflater.inflate(R.layout.list_item1, null));
pageViews.add(inflater.inflate(R.layout.list_item2, null));
pageViews.add(inflater.inflate(R.layout.list_item3, null));
imageViews = new ImageView[pageViews.size()];
//获取相关的容器
main = (ViewGroup)inflater.inflate(R.layout.main, null);
// group是R.layou.main中的负责包裹小圆点的LinearLayout.
group = (ViewGroup)main.findViewById(R.id.viewGroup);
//获取ViewPager对象
viewPager = (ViewPager)main.findViewById(R.id.guidePages);
//创建相关的ImageView对象并添加对象
for (int i = 0; i < pageViews.size(); i++) {
imageView = new ImageView(AndroidGuideViewActivityActivity.this);
imageView.setLayoutParams(new LayoutParams(20,20));
imageView.setPadding(20, 0, 20, 0);
imageViews[i] = imageView;
if (i == 0) {
//默认选中第一张图片
imageViews[i].setBackgroundResource(R.drawable.page_indicator_focused);
} else {
imageViews[i].setBackgroundResource(R.drawable.page_indicator);
}
group.addView(imageViews[i]);
}
//设置布局
setContentView(main);
//设置相关的适配器对象
viewPager.setAdapter(new GuidePageAdapter());
//设置相关的响应事件
viewPager.setOnPageChangeListener(new GuidePageChangeListener());
}
/** 指引页面Adapter */
class GuidePageAdapter extends PagerAdapter {
@Override
public int getCount() {
return pageViews.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public int getItemPosition(Object object) {
// TODO Auto-generated method stub
return super.getItemPosition(object);
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
// TODO Auto-generated method stub
((ViewPager) arg0).removeView(pageViews.get(arg1));
}
@Override
public Object instantiateItem(View arg0, int arg1) {
// TODO Auto-generated method stub
((ViewPager) arg0).addView(pageViews.get(arg1));
return pageViews.get(arg1);
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
// TODO Auto-generated method stub
}
@Override
public Parcelable saveState() {
// TODO Auto-generated method stub
return null;
}
@Override
public void startUpdate(View arg0) {
// TODO Auto-generated method stub
}
@Override
public void finishUpdate(View arg0) {
// TODO Auto-generated method stub
}
}
/** 指引页面改监听器 */
class GuidePageChangeListener implements OnPageChangeListener {
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageSelected(int arg0) {
for (int i = 0; i < imageViews.length; i++) {
imageViews[arg0]
.setBackgroundResource(R.drawable.page_indicator_focused);
if (arg0 != i) {
imageViews[i]
.setBackgroundResource(R.drawable.page_indicator);
}
}
}
}
}
