Android 九宫格布局

源码地址

演示

image

需求

满足0-9个图的适配

图数量	演示
1	image
2	image
3	image
4	image
5	image
6	image
7	image
8	image
9	image

使用

手动设置

在RecyclerView中使用通过设置 NineGridAdapter

NineGridAdapter源码：

public abstract class NineGridAdapter {

    protected abstract View getItemView(ViewGroup parent, int position);

    protected abstract void bindView(View view, int position);

    protected abstract int getItemCount();

    protected void onItemClick(View view, int position) {
    }

}

eg:通过继承NineGridAdapter 详见demo

   private static class NineImageAdapter extends NineGridAdapter {

        private List mUrls;

        public NineImageAdapter(List urls) {
            mUrls = urls;
        }

        @Override
        protected View getItemView(ViewGroup parent, int position) {
            return LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_img, parent, false);
        }

        @Override
        protected void bindView(View view, int position) {
            String url = mUrls.get(position);
            ImageView imageView = view.findViewById(R.id.iv);
            Picasso.with(view.getContext())
                    .load(url)
                    .placeholder(R.drawable.ic_heart)
                    .into(imageView);
        }

        @Override
        protected int getItemCount() {
            return mUrls == null ? 0 : mUrls.size();
        }

        @Override
        protected void onItemClick(View view, int position) {
            super.onItemClick(view, position);
            Toast.makeText(App.getInstance(), "position " + position, Toast.LENGTH_SHORT).show();
        }
    }

属性

app:ngl_gridSpace="10dp"
app:ngl_oneChildHeight="200dp"

属性说明

属性值	说明	值
ngl_gridSpace	间距	默认20px
ngl_oneChildHeight	当只有一个图的时候的高度	默认400px