Banner轮播图的简单使用

框架的使用很简单：
步骤：

1.依赖Banner

compile 'com.youth.banner:banner:1.4.10'

2.清单文件中添加相关的权限

<!-- if you want to load images from the internet --><uses-permission android:name="android.permission.INTERNET" /> <!-- if you want to load images from a file OR from the internet --><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

3.布局中添加Banner，设置相关的属性

<com.youth.banner.Banner        android:id="@+id/ban"        android:layout_width="match_parent"        android:layout_height="500px"/>

4.在Activity中配置banner

public class MainActivity extends AppCompatActivity {    String[] urls = {"http://img.my.csdn.net/uploads/201407/26/1406383265_8550.jpg",            "http://b.hiphotos.baidu.com/image/h%3D300/sign=6a4263c9db58ccbf04bcb33a29d9bcd4/aa18972bd40735fa3f5184c294510fb30f24082c.jpg",            "http://f.hiphotos.baidu.com/image/h%3D300/sign=3edefc4f9845d688bc02b4a494c27dab/4b90f603738da977c431b357ba51f8198618e3b4.jpg",            "http://a.hiphotos.baidu.com/image/h%3D300/sign=bcf918a387b1cb1321693a13ed5556da/1ad5ad6eddc451da099a7fa7bcfd5266d0163209.jpg",            "http://f.hiphotos.baidu.com/image/h%3D300/sign=8c4e51b23cd3d539de3d09c30a86e927/ae51f3deb48f8c54d14ab46330292df5e1fe7fe4.jpg",            "http://d.hiphotos.baidu.com/image/h%3D300/sign=a107c18714178a82d13c79a0c602737f/6c224f4a20a446232ad69e299222720e0cf3d758.jpg"};    private Banner ban;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ban = findViewById(R.id.ban);        //配置重写好的加载图片的类        ban.setImageLoader(new MLoader());        //需要传入一个图片地址的集合        ban.setImages(Arrays.asList(urls));        //设置自动轮播，默认为true        ban.isAutoPlay(true);        //设置轮播时间        ban.setDelayTime(3500);        //设置banner动画效果        ban.setBannerAnimation(Transformer.ForegroundToBackground);        //开启轮播        ban.start();    }    /**     * 这个类是Banner中的一个类;我们进行重写;     */    private class MLoader extends ImageLoader{        //这个就是专门让我们重写,加载图片的具体逻辑        @Override public void displayImage(Context context, Object path, ImageView imageView)   {   com.nostra13.universalimageloader.core.ImageLoader.getInstance().                               displayImage((String)path,imageView);        }    }}