android教程viewpager自动循环和手动循环

package com.imoyo.expert;

import java.util.arraylist;

import android.app.activity;
import android.os.bundle;
import android.os.handler;
import android.support.v4.view.viewpager;
import android.support.v4.view.viewpager.onpagechangelistener;
import android.util.log;
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;

public class exactivity extends activity {
 viewpager viewpager;
 arraylist<view> list;
 viewgroup main, group;
 boolean cunhuan = false;
 imageview imageview;
 imageview[] imageviews;
 private static int c_id = 0;
 static int page_id = 1;
 private runnable switchtask = new runnable() {
  public void run() {
   if (cunhuan) {
    viewpager.setcurrentitem(page_id); 
    page_id++;
   }
   cunhuan=true;
   log.e("is_run", cunhuan+"");
   mhandler.postdelayed(switchtask, 3000);

  }
 };
 handler mhandler = new handler();
 @override
 protected void onresume() {
  super.onresume();
  switchtask.run();
 }
 @override
 public void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  this.requestwindowfeature(window.feature_no_title);
  getview();

  imageviews = new imageview[list.size()];
  viewgroup main = (viewgroup) inflater.inflate(r.layout.activity_main,
    null);

  viewgroup group = (viewgroup) main.findviewbyid(r.id.viewgroup);

  viewpager = (viewpager) main.findviewbyid(r.id.viewpager);

  for (int i = 0; i < 5; i++) {
   imageview = new imageview(this);
   imageview.setlayoutparams(new layoutparams(12, 12));
   imageviews[i] = imageview;
   if (i == 0) {
    imageviews[i].setbackgroundresource(r.drawable.img_blue_point);
   } else {
    imageviews[i].setbackgroundresource(r.drawable.img_white_point);
   }
   group.addview(imageview);
  }

  setcontentview(main);
  viewpageradapter adapter = new viewpageradapter(this, list);
  viewpager.setadapter(adapter);
  viewpager.setonpagechangelistener(listener);
  viewpager.setcurrentitem(2);

 }

 public void getview() {
  inflater = getlayoutinflater();
  list = new arraylist<view>();
  list.add(inflater.inflate(r.layout.item4, null));
  list.add(inflater.inflate(r.layout.item5, null));

  list.add(inflater.inflate(r.layout.item1, null));
  list.add(inflater.inflate(r.layout.item2, null));
  list.add(inflater.inflate(r.layout.item3, null));
  list.add(inflater.inflate(r.layout.item4, null));
  list.add(inflater.inflate(r.layout.item5, null));

  list.add(inflater.inflate(r.layout.item1, null));
  list.add(inflater.inflate(r.layout.item2, null));
 }

 onpagechangelistener listener = new onpagechangelistener() {

  @override
  public void onpageselected(int arg0) {

   if (arg0 == 0) {
    viewpager.setcurrentitem(5, false);
    page_id=5;
   } else if (arg0 == 8) {
    viewpager.setcurrentitem(3, false);
    page_id=3;
   }else{
    page_id=arg0;
   }
   log.e("arg", arg0 + "");

   for (int i = 2; i < 7; i++) {
    imageviews[i - 2]
      .setbackgroundresource(r.drawable.img_white_point);
   }
   switch (arg0) {
   case 7:
   case 2:
    imageviews[0]
      .setbackgroundresource(r.drawable.img_blue_point);
    break;
   case 3:
   case 8:
    imageviews[1]
      .setbackgroundresource(r.drawable.img_blue_point);
    break;
   case 4:
    imageviews[2]
      .setbackgroundresource(r.drawable.img_blue_point);
    break;
   case 0:
   case 5:
    imageviews[3]
      .setbackgroundresource(r.drawable.img_blue_point);
    break;
   case 1:
   case 6:
    imageviews[4]
      .setbackgroundresource(r.drawable.img_blue_point);
    break;
   }

  }

  @override
  public void onpagescrolled(int arg0, float arg1, int arg2) {
  }

  @override
  public void onpagescrollstatechanged(int arg0) {

  }
 };
 private layoutinflater inflater;
}