Android ViewPager自定义轮播图并解决播放冲突

本文实例为大家分享了android viewpager自定义轮播图，并解决播放冲突，供大家参考

首先介绍一下这篇小代码：

注释全面，简单易学，适用初学者，图片自拟！！！

一定要将arraylist集合&handler机制传到适配器，否则无法完成展示，也解决不了滑动冲突，代码有点多，但是它通俗易懂啊

layout布局内写法：

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
 
    <android.support.v4.view.viewpager
        android:id="@+id/pager01"
        android:layout_width="match_parent"
        android:layout_height="300dp" />
 
    <radiogroup
        android:id="@+id/radiogroup"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
    </radiogroup>
 
</linearlayout>

activity内写法：

public class frag_01 extends fragment {
 private radiogroup radiogroup;
 private viewpager pager;
 
 @override
 public view oncreateview(layoutinflater inflater, viewgroup container,
   bundle savedinstancestate) {
  view view = inflater.inflate(r.layout.frag_01, container, false);
  // 找viewpager控件
  radiogroup = (radiogroup) view.findviewbyid(r.id.radiogroup);
  pager = (viewpager) view.findviewbyid(r.id.pager01);
  
  // 图片数据自拟-->drawable文件夹下
  int arr[] = { r.drawable.a1, r.drawable.a2, r.drawable.a3,
    r.drawable.a4, r.drawable.a5 };
  final arraylist<imageview> list = new arraylist<imageview>();
  for (int i = 0; i < arr.length; i++) {
   imageview imageview = new imageview(getactivity());
   imageview.setimageresource(arr[i]);
   list.add(imageview);
   // 生成小圆点
   radiobutton radiobutton = new radiobutton(getactivity());
   radiogroup.addview(radiobutton);
  }
  
  // 默认选中第一个
  radiogroup.check(radiogroup.getchildat(0).getid());
    
  // 适配器
  pager.setadapter(new mypageradapter(list, handler));
  
  // 页面切换监听
  pager.setonpagechangelistener(new onpagechangelistener() {
 
   @override
   public void onpageselected(int arg0) {
    //根据页面索引控制小圆点切换
    arg0 %= list.size();
    radiogroup.check(radiogroup.getchildat(arg0).getid());
 
   }
 
   @override
   public void onpagescrolled(int arg0, float arg1, int arg2) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void onpagescrollstatechanged(int arg0) {
    // todo auto-generated method stub
 
   }
  });
  //handler发送消息
  handler.sendemptymessagedelayed(0, 3000);
  return view;
 }
 
        //handler机制-----------------------------------------
 
 handler handler = new handler() {
  public void handlemessage(android.os.message msg) {
   switch (msg.what) {
   case 0:
    //获取到下一页的条目--->赋值给当前条目
    int currentitem = pager.getcurrentitem() + 1;
    pager.setcurrentitem(currentitem);
    handler.sendemptymessagedelayed(0, 3000);
    break;
 
   default:
    break;
   }
  };
 };
}

pageradapter适配器的写法：（内含滑动冲突解决方案）

public class mypageradapter extends pageradapter {
 
 private arraylist<imageview> list;
 private handler handler;
 //构造
 public mypageradapter(arraylist<imageview> list, handler handler) {
  super();
  this.list = list;
  this.handler = handler;
 }
 
 @override
 public int getcount() {
  // 设置最大值
  return integer.max_value;
 }
 
 @override
 public boolean isviewfromobject(view arg0, object arg1) {
  //当前视图和新加载视图判断-->为真才能去销毁
  return arg0 == arg1;
 }
 
 // 添加视图
        // ----该方法内包含滑动冲突----
 @override
 public object instantiateitem(viewgroup container, int position) {
  position %= list.size();
  imageview imageview = list.get(position);
  imageview.setontouchlistener(new ontouchlistener() {
 
   @override
   public boolean ontouch(view v, motionevent event) {
    // 获取事件
    int action = event.getaction();
    switch (action) {
    case motionevent.action_move:// 滑动
     handler.removecallbacksandmessages(null);
     break;
    case motionevent.action_down:// 按下
     handler.removecallbacksandmessages(null);
     break;
    case motionevent.action_cancel:// 非人为操作
     handler.sendemptymessagedelayed(0, 3000);
     break;
    case motionevent.action_up:// 抬起
     handler.sendemptymessagedelayed(0, 3000);
     break;
    }
    return true;
   }
  });
  //获取的图片存进容器
  container.addview(imageview);
  return imageview;
 }
 
 // 销毁视图
 @override
 public void destroyitem(viewgroup container, int position, object object) {
  container.removeview((view) object);
 }
}

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。