A特别简单的网络获取图片轮播图_andiron 获取连环图片分?pagenum=1&pagesize=8&type=2-优快云博客

本文链接：https://blog.youkuaiyun.com/Hypoc7isyLK/article/details/84560009

本文介绍了一种使用Handler和ViewPager实现轮播图自动切换的方法，通过Handler发送延迟消息更新ViewPager当前页面，实现无限循环播放效果。代码中包含了Handler、ViewPager、自定义Adapter的实现细节。

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发送的handler

Handler mHandler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            int item = viewpager.getCurrentItem();
            item++;
            viewpager.setCurrentItem(item);
            mHandler.sendEmptyMessageDelayed(1,1000);
        }
    };

获取数据设置adapter发送handler

			   List<Person.DataBean> data = person.getData();
                mAdapter = new MyAdapter(getContext());
                mAdapter.reset(data);
                viewpager.setCurrentItem(5000);

                mHandler.sendEmptyMessageDelayed(1,1000);

Adapter的代码

package com.bwie.likuo.adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import com.bumptech.glide.Glide;
import com.bwie.likuo.bean.Person;

import java.util.ArrayList;
import java.util.List;

/**
 * date:2018/11/26
 * author:李阔(淡意衬优柔)
 * function:
 */
public class LunAdapter extends PagerAdapter {
    Context context;
    List<Person.DataBean> mDataBeans;


    public LunAdapter(Context context) {
        this.context = context;
        mDataBeans = new ArrayList<>();
    }




    public void reset(List<Person.DataBean> mTuData) {
        mDataBeans.addAll(mTuData);
    }

    @Override
    public int getCount() {
        return mDataBeans.size() == 0 ? 0 : Integer.MAX_VALUE;
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object o) {
        return view==o;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        ImageView imageView = new ImageView(context);
        Glide.with(context).load(mDataBeans.get(position % mDataBeans.size()).getThumbnail_pic_s02()).into(imageView);
        container.addView(imageView);
        return imageView;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);

    }
}