用java代码写的图片轮播，方便调用

package com.sxt.view;

import java.util.List;

import com.sxt.net.img.ImageLoad;

import android.content.Context;

import android.graphics.Bitmap;

import android.os.Handler;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.ViewPager;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.RelativeLayout;

/**

* 广告轮播界面

* */

public class AdverstView implements ViewPager.OnPageChangeListener{

private Context ctx;

private Bitmap pointN;//默认图标

private Bitmap pointP;//选中图标

private List<View> list;//viewpager中显示数据源

private int Height = 0;//广告栏高度

private RelativeLayout mumRelative;//整体广告栏布局

private ViewPager vp;//广告轮播viewpager

private LinearLayout bottemLinear;//底部显示点容器

private int Index = 0;//viewpager正在显示界面索引

private boolean TimmerFlag = true;//定时标志

private boolean ScrollFlag = false;//手指拖动标志

private ImageLoad load = new ImageLoad();//异步加载图片工具类

//初始化界面方法

public void create(Context ctx,Bitmap pointN,

Bitmap pointP,List<View> list,

int Heigh){

this.ctx = ctx;

this.pointN = pointN;

this.pointP = pointP;

this.list = list;

this.Height = Heigh;

initView();

initPager();

}

//初始化控件方法

private void initView(){

mumRelative = new RelativeLayout(ctx);

mumRelative.setLayoutParams(

new LinearLayout.LayoutParams

(LinearLayout.LayoutParams.MATCH_PARENT, Height));

vp = new ViewPager(ctx);

vp.setLayoutParams(new RelativeLayout.LayoutParams

(RelativeLayout.LayoutParams.MATCH_PARENT,

RelativeLayout.LayoutParams.MATCH_PARENT));

mumRelative.addView(vp);

bottemLinear = new LinearLayout(ctx);

RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams

(RelativeLayout.LayoutParams.WRAP_CONTENT,pointN.getHeight());

lp.addRule(RelativeLayout.CENTER_HORIZONTAL);

lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);

lp.bottomMargin = pointN.getHeight();

bottemLinear.setLayoutParams(lp);

bottemLinear.setOrientation(LinearLayout.HORIZONTAL);

mumRelative.addView(bottemLinear);

//按照viewpager数据源的数量添加显示当前页的点

for(int i = 0;i < list.size();i ++){

ImageView img = new ImageView(ctx);

LinearLayout.LayoutParams imgLp= new LinearLayout.LayoutParams

(LinearLayout.LayoutParams.WRAP_CONTENT,

LinearLayout.LayoutParams.MATCH_PARENT);

imgLp.leftMargin = 10;

img.setLayoutParams(imgLp);

if(i == 0)

img.setImageBitmap(pointP);

else

img.setImageBitmap(pointN);

img.setId(i);

bottemLinear.addView(img, i);

}

}

//初始化viewpager相关配置

private void initPager(){

vp.setAdapter(new MyAdapter());

vp.setOnPageChangeListener(this);

}

//获取view方法

public View getView(){

return mumRelative;

}

//viewpager使用适配器

private class MyAdapter extends PagerAdapter{

@Override

public int getCount() {

return list.size();

}

@Override

public boolean isViewFromObject(View arg0, Object arg1) {

return arg0 == arg1;

}

@Override

public void destroyItem(ViewGroup container, int position, Object object) {

container.removeView(list.get(position));

}

@Override

public Object instantiateItem(ViewGroup container, int position) {

ImageView img = (ImageView) list.get(position);

String imgName = (String) img.getTag();

container.addView(img);

load.LoadImg(imgName, img);

return list.get(position);

}

}

@Override

public void onPageScrollStateChanged(int arg0) {

if(arg0 == ViewPager.SCROLL_STATE_IDLE){

ScrollFlag = false;

}else{

ScrollFlag = true;

}

}

@Override

public void onPageScrolled(int arg0, float arg1, int arg2) {

}

@Override

public void onPageSelected(int arg0) {

Index = arg0;

//切换底部imageview

selectImg();

}

//开启广告轮播

public void startTime(){

TimmerFlag = true;

new TimmerThread().start();

}

//关闭广告轮播

public void stopTime(){

TimmerFlag = false;

}

//根据viewpager显示的索引切换底部imageview显示的图标

private void selectImg(){

for(int i = 0;i < list.size();i ++){

ImageView img = (ImageView) bottemLinear.getChildAt(i);

if(i == Index){

img.setImageBitmap(pointP);

}else{

img.setImageBitmap(pointN);

}

}

}

//定时线程->定时更新广告显示界面

class TimmerThread extends Thread{

public void run(){

while(TimmerFlag){

try {

Thread.sleep(3*1000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

if(!ScrollFlag)

hand.sendEmptyMessage(0);

}

}

}

//接收定时线程发送消息handler

Handler hand = new Handler(){

public void handleMessage(android.os.Message msg) {

super.handleMessage(msg);

if(msg.what == 0 && list != null){

//切换界面

Index++;

//滑动到边界时切换到0

if(Index >= list.size()){

Index = 0;

}

vp.setCurrentItem(Index);

}

};

};

}