android BannerView实现自动轮播广告的用法（参考自github）

1、首先依赖这个包：

compile 'xyz.eraise:bannerview:1.0.5'

2、最重要的是要添加网络权限：

android:name="android.permission.INTERNET" />

3、写个实体类存放图片的url：

public class AdEntity {      public String pic;   public String url;      public AdEntity(String pic, String url) {      this.pic = pic;      this.url = url;   }   public String getPic() {      return pic;   }   public void setPic(String pic) {      this.pic = pic;   }}

4、在activity_main.xml中：

    xmlns:app="http://schemas.android.com/apk/res-auto"    android:id="@+id/bv_ad"    android:layout_width="match_parent"    android:layout_height="match_parent"    app:ci_width="10dp"    app:ci_height="10dp"/>

5、在MainActivity中：

import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.AsyncTask;import android.os.Bundle;import android.os.SystemClock;import android.util.TypedValue;import android.view.ViewGroup;import android.widget.LinearLayout;import java.util.ArrayList;import xyz.eraise.bannerview.BannerView;public class MainActivity extends Activity {    private BannerView bvAd;    private BannerAdapterImpl _adAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initWidget();        initData();        initListener();    }    private void initWidget() {        bvAd = (BannerView) findViewById(R.id.bv_ad);        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);        params.height = 500;        bvAd.setLayoutParams(params);    }    private void initData() {        // 异步加载后需要重新设置Adapter，并且调用 startAutoScroll        _adAdapter = new BannerAdapterImpl(this);        /* 模拟异步请求，过上几分钟再把数据添加到界面上 */        new AsyncTask, Void, ArrayList>() {            @Override            protected ArrayList doInBackground(Void... params) {                SystemClock.sleep(3000);                ArrayList _adList = new ArrayList<>();                _adList.add(new AdEntity("http://sh.sinaimg.cn/2011/0629/U5952P18DT20110629112508.jpg", "http://www.sj33.cn/dphoto/stsy/weiju/201105/27977_5.html"));                _adList.add(new AdEntity("http://wenwen.soso.com/p/20100504/20100504234911-1470813934.jpg", "http://www.baidu.com"));                _adList.add(new AdEntity("http://www.hanefu.com/images/5041502-12.jpg", "http://www.sina.com"));                _adList.add(new AdEntity("http://p4.so.qhmsg.com/t01eadb90f083a24fd4.jpg", "http://www.sina.com"));                _adList.add(new AdEntity("http://p3.so.qhmsg.com/t012beb8b7c9e611c88.jpg", "http://www.sina.com"));                return _adList;            }            @Override            protected void onPostExecute(ArrayList result) {                super.onPostExecute(result);                _adAdapter.setData(result);                // 将Adapter设置到banner上                bvAd.setAdapter(_adAdapter);                bvAd.startAutoScroll();            }        }.execute();    }    private void initListener() {        bvAd.setOnBannerClickListener(new BannerView.OnBannerClickListener() {            @Override            public void onClick(BannerView view, int position) {                // 通过position获取当前被点击的广告执行相应的操作                Intent _intent = new Intent(Intent.ACTION_VIEW, Uri.parse(_adAdapter.getItem(position).url));                startActivity(_intent);            }        });    }    private int dip2px(int dip) {        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, getResources().getDisplayMetrics());    }    @Override    protected void onResume() {        super.onResume();        if (null != bvAd) {            bvAd.startAutoScroll();        }    }    @Override    protected void onPause() {        super.onPause();        if (null != bvAd) {            bvAd.stopAutoScroll();        }    }}

6、values.xml中：

name="BannerView">    name="indicator_gravity">        name="center" value="0"/>        name="left" value="1"/>        name="right" value="2"/>        format="dimension" name="indicator_height"/>    format="dimension" name="indicator_margin"/>    format="dimension" name="indicator_marginLeft"/>    format="dimension" name="indicator_marginRight"/>    format="dimension" name="indicator_marginTop"/>    format="dimension" name="indicator_marginBottom"/>    format="float" name="height_ratio"/>    format="integer" name="scroll_delay"/>name="CircleIndicator">    format="dimension" name="ci_width"/>    format="dimension" name="ci_height"/>    format="dimension" name="ci_margin"/>    format="reference" name="ci_animator"/>    format="reference" name="ci_animator_reverse"/>    format="reference" name="ci_drawable"/>    format="reference" name="ci_drawable_unselected"/>    format="enum" name="ci_orientation">        name="horizontal" value="0"/>        name="vertical" value="1"/>        name="ci_gravity">        name="top" value="0x30"/>        name="bottom" value="0x50"/>        name="left" value="0x03"/>        name="right" value="0x05"/>        name="center_vertical" value="0x10"/>        name="fill_vertical" value="0x70"/>        name="center_horizontal" value="0x01"/>        name="fill_horizontal" value="0x07"/>        name="center" value="0x11"/>        name="fill" value="0x77"/>        name="clip_vertical" value="0x80"/>        name="clip_horizontal" value="0x08"/>        name="start" value="0x00800003"/>        name="end" value="0x00800005"/>

7、在anim文件下创建scale_with_alpja.xml

<?xml version="1.0" encoding="utf-8"?>xmlns:android="http://schemas.android.com/apk/res/android"    android:duration="@android:integer/config_shortAnimTime">            android:propertyName="alpha"        android:valueType="floatType"        android:valueFrom="0.5"        android:valueTo="1.0"/>            android:propertyName="scaleX"        android:valueType="floatType"        android:valueFrom="1.0"        android:valueTo="1.3"/>            android:propertyName="scaleY"        android:valueType="floatType"        android:valueFrom="1.0"        android:valueTo="1.3"/>

8、在drawable文件下创建white_radius.xml：

<?xml version="1.0" encoding="utf-8"?>xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="oval">            android:color="@android:color/darker_gray"/>

好了基本上是这样的实现的，祝猴子们不出bug

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