android BannerView實現自動輪播廣告的用法（參考自github）
阿新 • • 發佈：2019-01-28
1、首先依賴這個包：
compile 'xyz.eraise:bannerview:1.0.5'
2、最重要的是要新增網路許可權：
<uses-permission android:name="android.permission.INTERNET" />3、寫個實體類存放圖片的url：
public class AdEntity { public String pic; public String url; public AdEntity(String pic, String url) { this.pic = pic; this4、在activity_main.xml中：.url = url; } public String getPic() { return pic; } public void setPic(String pic) { this.pic = pic; } }
<xyz.eraise.bannerview.BannerView xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/bv_ad" android:layout_width="match_parent" android5、在MainActivity中：:layout_height="match_parent" app:ci_width="10dp" app:ci_height="10dp"/>
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; import6、values.xml中：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() { // 非同步載入後需要重新設定Adapter，並且呼叫 startAutoScroll _adAdapter = new BannerAdapterImpl(this); /* 模擬非同步請求，過上幾分鐘再把資料新增到介面上 */ 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); // 將Adapter設定到banner上 bvAd.setAdapter(_adAdapter); bvAd.startAutoScroll(); } }.execute(); } private void initListener() { bvAd.setOnBannerClickListener(new BannerView.OnBannerClickListener() { @Override public void onClick(BannerView view, int position) { // 通過position獲取當前被點選的廣告執行相應的操作 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(); } } }
<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檔案下建立scale_with_alpja.xml
<?xml version="1.0" encoding="utf-8"?> <!-- ViewPager 指示器動畫 --> <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檔案下建立white_radius.xml：
<?xml version="1.0" encoding="utf-8"?> <!-- 指示器圖片 --> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval"> <solid android:color="@android:color/darker_gray"/> </shape>好了基本上是這樣的實現的，祝猴子們不出bug