现在恰好有个项目需要做个轮播图效果，这个需求也是很常见的需求，于是就做个笔记写一下实现过程

分为加载本地图片和网络图片

加载本地图片

第一步：先在build.gradle中加入banner和glide的依赖

//banner依赖implementation 'com.youth.banner:banner:1.4.9'    //Glide框架    implementation "com.github.bumptech.glide:glide:4.6.1"

第二步：xml布局

第三步：MainActivity

public class MainActivity extends AppCompatActivity {    private Banner mBanner;    private LocalImageLoader mImageLoader;    private ArrayList imagePath;    private ArrayList imageTitle;   @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        intView();        intDate();    }    private void intDate() {        imagePath = new ArrayList<>();        imageTitle = new ArrayList<>();        imagePath.add(R.mipmap.ic_launcher);        imagePath.add(R.mipmap.ic_launcher);        imagePath.add(R.mipmap.ic_launcher);        imagePath.add(R.mipmap.ic_launcher);        imagePath.add(R.mipmap.ic_launcher);        imageTitle.add("第一");        imageTitle.add("第二");        imageTitle.add("第三");        imageTitle.add("第四");        imageTitle.add("第五");    }    private void intView() {        mImageLoader = new LocalImageLoader();        mBanner = findViewById(R.id.banner);        //样式        mBanner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR_TITLE);        //加载器        mBanner.setImageLoader(mImageLoader);        //动画效果        mBanner.setBannerAnimation(Transformer.ZoomOutSlide);        //图片标题        mBanner.setBannerTitles(imageTitle);        //间隔时间        mBanner.setDelayTime(4500);        //是否为自动轮播        mBanner.isAutoPlay(true);        //图片小点显示所在位置        mBanner.setIndicatorGravity(BannerConfig.CENTER);        //图片加载地址        mBanner.setImages(imagePath);        //启动轮播图。        mBanner.start();        //监听轮播图        mBanner.setOnBannerListener(new OnBannerListener() {            @Override            public void OnBannerClick(int position) {                Toast.makeText(MainActivity.this, "点击了" + (position + 1) + "张轮播图", Toast.LENGTH_SHORT).show();            }        });    }    /**     * 图片加载类     */    private class LocalImageLoader extends ImageLoader {        @Override        public void displayImage(Context context, Object path, ImageView imageView) {            Glide.with(context.getApplicationContext())                    .load(path)                    .into(imageView);        }    }}

加载网络图片

只要修改一下intDate(）和LocalImageLoader（）方法就好了
例如：

private void initData() {        list_path.add("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%93%86%E5%95%A6A%E6%A2%A6&step_word=&hs=0&pn=8&spn=0&di=118140&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3835923757%2C1980937759&os=265876109%2C1976020808&simid=0%2C0&adpicid=0&lpn=0&ln=1495&fr=&fmq=1573545585312_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg24.pplive.cn%2Fcs180x240%2F2017%2F11%2F08%2F18331958489.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fe_z%26e3Brrpe_z%26e3Bv54AzdH3Frw2jAzdH3Ftwtk9F2rHzdii0tkWE_z%26e3Bip4s&gsm=&rpstart=0&rpnum=0&islist=&querylist=&force=undefined");         list_path.add("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%93%86%E5%95%A6A%E6%A2%A6&step_word=&hs=0&pn=8&spn=0&di=118140&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3835923757%2C1980937759&os=265876109%2C1976020808&simid=0%2C0&adpicid=0&lpn=0&ln=1495&fr=&fmq=1573545585312_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg24.pplive.cn%2Fcs180x240%2F2017%2F11%2F08%2F18331958489.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fe_z%26e3Brrpe_z%26e3Bv54AzdH3Frw2jAzdH3Ftwtk9F2rHzdii0tkWE_z%26e3Bip4s&gsm=&rpstart=0&rpnum=0&islist=&querylist=&force=undefined");        list_path.add("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%93%86%E5%95%A6A%E6%A2%A6&step_word=&hs=0&pn=8&spn=0&di=118140&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3835923757%2C1980937759&os=265876109%2C1976020808&simid=0%2C0&adpicid=0&lpn=0&ln=1495&fr=&fmq=1573545585312_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg24.pplive.cn%2Fcs180x240%2F2017%2F11%2F08%2F18331958489.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fe_z%26e3Brrpe_z%26e3Bv54AzdH3Frw2jAzdH3Ftwtk9F2rHzdii0tkWE_z%26e3Bip4s&gsm=&rpstart=0&rpnum=0&islist=&querylist=&force=undefined");        list_path.add("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%93%86%E5%95%A6A%E6%A2%A6&step_word=&hs=0&pn=8&spn=0&di=118140&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3835923757%2C1980937759&os=265876109%2C1976020808&simid=0%2C0&adpicid=0&lpn=0&ln=1495&fr=&fmq=1573545585312_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg24.pplive.cn%2Fcs180x240%2F2017%2F11%2F08%2F18331958489.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fe_z%26e3Brrpe_z%26e3Bv54AzdH3Frw2jAzdH3Ftwtk9F2rHzdii0tkWE_z%26e3Bip4s&gsm=&rpstart=0&rpnum=0&islist=&querylist=&force=undefined");         list_path.add("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%93%86%E5%95%A6A%E6%A2%A6&step_word=&hs=0&pn=8&spn=0&di=118140&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3835923757%2C1980937759&os=265876109%2C1976020808&simid=0%2C0&adpicid=0&lpn=0&ln=1495&fr=&fmq=1573545585312_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg24.pplive.cn%2Fcs180x240%2F2017%2F11%2F08%2F18331958489.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fe_z%26e3Brrpe_z%26e3Bv54AzdH3Frw2jAzdH3Ftwtk9F2rHzdii0tkWE_z%26e3Bip4s&gsm=&rpstart=0&rpnum=0&islist=&querylist=&force=undefined");         list_path.add("https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E5%93%86%E5%95%A6A%E6%A2%A6&step_word=&hs=0&pn=8&spn=0&di=118140&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3835923757%2C1980937759&os=265876109%2C1976020808&simid=0%2C0&adpicid=0&lpn=0&ln=1495&fr=&fmq=1573545585312_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimg24.pplive.cn%2Fcs180x240%2F2017%2F11%2F08%2F18331958489.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fe_z%26e3Brrpe_z%26e3Bv54AzdH3Frw2jAzdH3Ftwtk9F2rHzdii0tkWE_z%26e3Bip4s&gsm=&rpstart=0&rpnum=0&islist=&querylist=&force=undefined");         list_title.add("哆啦A梦1");        list_title.add("哆啦A梦2");        list_title.add("哆啦A梦3");        list_title.add("哆啦A梦4");        list_title.add("哆啦A梦5");        list_title.add("哆啦A梦6");    }  private class LocalImageLoader extends ImageLoader {        @Override        public void displayImage(Context context, Object path, ImageView imageView) {            Glide.with(context.getApplicationContext())                    .load((String) path)                    .into(imageView);        }    }

下载网络图片的时候要记得添加网络权限

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补充。轮播图几种默认样式对比。。。PS：如果轮播图不想要title，就更改样式就好了

需要注意的是，如果设置有标题出现的样式，那么一定要设置setBannerTitles属性，不然会报错

样式一：CIRCLE_INDICATOR：无标题，有小圆点

//banner无标题样式mBanner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR);

效果图：

样式二：CIRCLE_INDICATOR_TITLE_INSIDE：小圆点和标题在同一栏

mBanner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR_TITLE_INSIDE);

效果图

样式三：CIRCLE_INDICATOR_TITLE：标题和小圆点同时出现

mBanner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR_TITLE);

效果图：

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