本文实例为大家分享了Android ViewPager实现页面左右切换的具体代码，供大家参考，具体内容如下
主界面viewpager.xml：
<?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" > <LinearLayout android:id="@+id/linearLayout01" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <include android:id="@+id/item_header" layout="@layout/item_header" /> <android.support.v4.view.ViewPager android:id="@+id/guidePages" android:layout_width="fill_parent" android:layout_height="wrap_content"/> </LinearLayout> <LinearLayout android:id="@+id/linearLayout01" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <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="40dp" android:gravity="center_horizontal" android:orientation="horizontal" > </LinearLayout> </RelativeLayout> </LinearLayout> </FrameLayout>
处理ViewPager的类：MyGuideViewActivity.java
package com.example.wenandroid;
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.Window;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
/**
* Android实现左右滑动指引效果
* @Description: Android实现左右滑动指引效果
* @File: MyGuideViewActivity.java
* @Package com.test.guide
* @Author Hanyonglu
* @Date 2012-4-6 下午11:15:18
* @Version V1.0
*/
public class MyGuideViewActivity extends Activity {
private ViewPager viewPager;
private ArrayList<View> pageViews;
private ImageView imageView;
private ImageView[] imageViews;
// 包裹滑动图片LinearLayout
private ViewGroup main;
// 包裹小圆点的LinearLayout
private ViewGroup group;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 设置无标题窗口
requestWindowFeature(Window.FEATURE_NO_TITLE);
LayoutInflater inflater = getLayoutInflater();
pageViews = new ArrayList<View>();
pageViews.add(inflater.inflate(R.layout.item05, null));
pageViews.add(inflater.inflate(R.layout.item06, null));
pageViews.add(inflater.inflate(R.layout.item01, null));
pageViews.add(inflater.inflate(R.layout.item02, null));
pageViews.add(inflater.inflate(R.layout.item03, null));
pageViews.add(inflater.inflate(R.layout.item04, null));
imageViews = new ImageView[pageViews.size()];
main = (ViewGroup)inflater.inflate(R.layout.viewpager, null);
group = (ViewGroup)main.findViewById(R.id.viewGroup);
viewPager = (ViewPager)main.findViewById(R.id.guidePages);
for (int i = 0; i < pageViews.size(); i++) {
imageView = new ImageView(MyGuideViewActivity.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]);
}
setContentView(main);
viewPager.setAdapter(new GuidePageAdapter());
viewPager.setOnPageChangeListener(new GuidePageChangeListener());
}
// 指引页面数据适配器
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) {
return super.getItemPosition(object);
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView(pageViews.get(arg1));
}
@Override
public Object instantiateItem(View arg0, int arg1) {
((ViewPager) arg0).addView(pageViews.get(arg1));
return pageViews.get(arg1);
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void startUpdate(View arg0) {
}
@Override
public void finishUpdate(View arg0) {
}
}
// 指引页面更改事件监听器
class GuidePageChangeListener implements OnPageChangeListener {
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@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);
}
}
}
}
}
其中page_indicator_focused图片为：
，即当选中单个页面时，下标变红。
page_iindicator图片为：
，当未选中页面时，未选中的页面全部为黄色。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
