实现图片的左右滑动，可以通过ViewPager来实现。
主要分为以下几步：

1.activity的布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.viewpager.widget.ViewPager
        android:id="@+id/view_page"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</RelativeLayout>

2.Activity代码

 private void initView() {
        viewPager = findViewById(R.id.view_page);
        //设置适配器
        viewPager.setAdapter(new PictureDetailAdapter(this, arrayList));
        //Pager之间的间距
        viewPager.setPageMargin(20);
        //预加载
        viewPager.setOffscreenPageLimit(3);
        //默认第一张图 左右都有图
        viewPager.setCurrentItem(currentIndex);
    }

3.Adapter布局
里面就一个简单的ImageView

<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/image_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
</ImageView>

4.Adapter代码

/**
 * Description:
 * <p>
 * Time:2022/8/20-7:48
 * Author:我叫PlusPlus
 */
public class PictureDetailAdapter extends PagerAdapter {

    private Context mContext;

    private ArrayList<String> dataList;

    public PictureDetailAdapter(Context context, ArrayList<String> arrayList) {
        mContext = context;
        dataList = arrayList;
    }

    @Override
    public Object instantiateItem(final ViewGroup container, final int position) {
        //子View显示
        View view = View.inflate(mContext, R.layout.item_picture_detail, null);
        ImageView imageView = view.findViewById(R.id.image_view);
        String data = dataList.get(position);
        Bitmap bitmap = BitmapFactory.decodeFile(data);
        imageView.setImageBitmap(bitmap);
        //添加到父控件
        container.addView(view);
        return view;
    }

    @Override
    public int getCount() {
        return dataList == null ? 0 : dataList.size();
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == object;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        //从viewpager中移除掉
        container.removeView((View) object);
    }
}