简单实现自定义轮播图

最新推荐文章于 2025-05-26 16:01:36 发布

原创最新推荐文章于 2025-05-26 16:01:36 发布 · 898 阅读

1 ·

CC 4.0 BY-SA版权

android 专栏收录该内容

6 篇文章

订阅专栏

本文介绍了一个自定义的ViewPager类MyViewPager，用于实现图片轮播功能。该类继承自ViewPager，并通过设置适配器MyPageAdapter加载图片列表。MyPageAdapter使用Glide库加载图片到ImageView中。

public class MyViewPager extends ViewPager {

    private List<String> images;

    public void setImages(List<String> images) {
        this.images = images;
    }

    public MyViewPager(@NonNull Context context) {
        super(context);
    }

    public MyViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public void init(){
        this.setAdapter(new MyPageAdapter(getContext(),images));
    }


    public static class MyPageAdapter extends PagerAdapter {
        private Context context;
        private List<String> images;

        public MyPageAdapter(Context context, List<String> images) {
            this.context = context;
            this.images = images;
        }

        @Override
        public int getCount() {
            return images.size();
        }

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

        @NonNull
        @Override
        public Object instantiateItem(@NonNull ViewGroup container, int position) {
            ImageView imageView = new ImageView(context);
            imageView.setScaleType(ImageView.ScaleType.FIT_XY);
            Glide.with(context).load(images.get(position)).into(imageView);
            container.addView(imageView);
            return imageView;
        }

        @Override
        public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
            container.removeView((View) object);
        }
    }
}