Banner基本使用 2.1.0

Step 1.依赖banner

Gradle

dependencies{
    compile 'com.youth.banner:banner:2.1.0'  
}

Step 2.添加权限到你的 AndroidManifest.xml

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

Step 3.在布局文件中添加Banner，可以设置自定义属性

！！！此步骤可以省略，可以直接在Activity或者Fragment中new Banner();       

有时候banner不显示  是因为height要设置一个固定值

<com.youth.banner.Banner
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/banner"
    android:layout_width="match_parent"
    android:layout_height="高度自己设置" />

1.简单的图片展示

public class IMGBean {

    public IMGBean(int imageRes) {
        this.imageRes = imageRes;
    }

    public int imageRes;

    public int getImageRes() {
        return imageRes;
    }

    public void setImageRes(int imageRes) {
        this.imageRes = imageRes;
    }


    public static List<IMGBean> getData() {
        List<IMGBean> list = new ArrayList<>();
        list.add(new IMGBean(R.mipmap.fta_ad1));
        list.add(new IMGBean(R.mipmap.fta_ad2));
        return list;
    }

}

    private void initBanner() {
        mBanner.setAdapter(new BannerImageAdapter<IMGBean>(IMGBean.getData()) {
            @Override
            public void onBindView(BannerImageHolder holder, IMGBean data, int position, int size) {
                //图片加载自己实现
                RoundedCorners roundedCorners = new RoundedCorners(10);
                RequestOptions options = RequestOptions.bitmapTransform(roundedCorners);
                Glide.with(holder.itemView).load(data.imageRes).apply(options).into(holder.imageView);
            }
        })
                .addBannerLifecycleObserver(this)//添加生命周期观察者
                .setIndicator(new CircleIndicator(getActivity()));
        //更多使用方法仔细阅读文档，或者查看demo
    }

2.网络获取的List<Bean> 数据结合使用  我这里用MMM.BBB代替JavaBean对象

~~1.定义Adapter

public class MyBannerAdapter extends BannerAdapter<MMM.BBB,MyBannerAdapter.BannerViewHolder> {


    public MyBannerAdapter(List<MMM.BBB> datas) {
        super(datas);
    }

    @Override
    public BannerViewHolder onCreateHolder(ViewGroup parent, int viewType) {
        ImageView imageView = new ImageView(parent.getContext());
        //注意，必须设置为match_parent，这个是viewpager2强制要求的
        ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT);
        imageView.setLayoutParams(params);
        imageView.setScaleType(ImageView.ScaleType.FIT_XY);
        return new BannerViewHolder(imageView);
    }

    @Override
    public void onBindView(BannerViewHolder holder, MMM.BBB data, int position, int size) {
        RoundedCorners roundedCorners = new RoundedCorners(10);
        RequestOptions options = RequestOptions.bitmapTransform(roundedCorners);
        Glide.with(holder.itemView).load(data.getOguyEkaJ()).apply(options).into(holder.imageView);
//        holder.imageView.setImageResource(data.getOguyEkaJ());
            //设置点击事件
           holder.imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.e("tttttttt",data.getXODHXxeB()+"");
            }
        });

    }


    class BannerViewHolder extends RecyclerView.ViewHolder {
        ImageView imageView;

        public BannerViewHolder(@NonNull ImageView view) {
            super(view);
            this.imageView = view;
        }
    }

}

2.设置

     mBanner.setAdapter(new MyBannerAdapter(data))
                .addBannerLifecycleObserver(this)//添加生命周期观察者
                .setIndicator(new CircleIndicator(getActivity()));

 

本文地址：https://blog.csdn.net/ulddfhv/article/details/109365907