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：

<uses-permission 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：

<xyz.eraise.bannerview.BannerView
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, Void, ArrayList<AdEntity>>() {
@Override
protected ArrayList<AdEntity> doInBackground(Void... params) {
SystemClock.sleep(3000);
ArrayList<AdEntity> _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<AdEntity> 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：

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

7、在anim文件下创建scale_with_alpja.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- ViewPager 指示器动画 -->
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="@android:integer/config_shortAnimTime">

<objectAnimator
android:propertyName="alpha"
android:valueType="floatType"
android:valueFrom="0.5"
android:valueTo="1.0"/>

<objectAnimator
android:propertyName="scaleX"
android:valueType="floatType"
android:valueFrom="1.0"
android:valueTo="1.3"/>

<objectAnimator
android:propertyName="scaleY"
android:valueType="floatType"
android:valueFrom="1.0"
android:valueTo="1.3"/>
</set>

8、在drawable文件下创建white_radius.xml：

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

好了基本上是这样的实现的，祝猴子们不出bug