android 仿淘宝购物车list view实例

好的，以下是一个简单的Android仿淘宝购物车的ListView实例：

1. 布局文件：

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ListView
        android:id="@+id/list_view"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <TextView
        android:id="@+id/tv_empty_cart"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="购物车空空如也~"
        android:textSize="20sp"
        android:visibility="gone" />

</LinearLayout>

2. 条目布局文件item_cart.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/iv_cart_item"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_margin="10dp"
        android:src="@mipmap/ic_launcher" />

    <TextView
        android:id="@+id/tv_cart_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_marginTop="10dp"
        android:layout_toEndOf="@id/iv_cart_item"
        android:text="商品名称"
        android:textColor="#000000"
        android:textSize="16sp" />

    <TextView
        android:id="@+id/tv_cart_price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_cart_name"
        android:layout_marginTop="10dp"
        android:layout_toEndOf="@id/iv_cart_item"
        android:text="¥0.00"
        android:textColor="#ff0000"
        android:textSize="14sp" />

    <TextView
        android:id="@+id/tv_cart_count"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@id/iv_cart_item"
        android:layout_marginTop="10dp"
        android:layout_toEndOf="@id/iv_cart_item"
        android:text="数量：0"
        android:textColor="#000000"
        android:textSize="14sp" />

    <Button
        android:id="@+id/btn_cart_delete"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_centerVertical="true"
        android:layout_marginEnd="10dp"
        android:text="删除" />

</RelativeLayout>

3. ListView的Adapter：

public class CartAdapter extends BaseAdapter {

    private Context mContext;
    private List<CartItem> mCartItemList;

    public CartAdapter(Context context, List<CartItem> cartItemList) {
        mContext = context;
        mCartItemList = cartItemList;
    }

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

    @Override
    public Object getItem(int position) {
        return mCartItemList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            convertView = LayoutInflater.from(mContext).inflate(R.layout.item_cart, parent, false);
            viewHolder = new ViewHolder();
            viewHolder.ivCartItem = convertView.findViewById(R.id.iv_cart_item);
            viewHolder.tvCartName = convertView.findViewById(R.id.tv_cart_name);
            viewHolder.tvCartPrice = convertView.findViewById(R.id.tv_cart_price);
            viewHolder.tvCartCount = convertView.findViewById(R.id.tv_cart_count);
            viewHolder.btnDelete = convertView.findViewById(R.id.btn_cart_delete);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        final CartItem cartItem = mCartItemList.get(position);
        viewHolder.ivCartItem.setImageResource(cartItem.getImageId());
        viewHolder.tvCartName.setText(cartItem.getName());
        viewHolder.tvCartPrice.setText(String.format("¥%.2f", cartItem.getPrice()));
        viewHolder.tvCartCount.setText(String.format("数量：%d", cartItem.getCount()));

        viewHolder.btnDelete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCartItemList.remove(position);
                notifyDataSetChanged();
                // 更新本地存储的购物车数据
                updateCartData(mCartItemList);
            }
        });

        return convertView;
    }

    private static class ViewHolder {
        ImageView ivCartItem;
        TextView tvCartName;
        TextView tvCartPrice;
        TextView tvCartCount;
        Button btnDelete;
    }

    // 更新本地存储的购物车数据
    private void updateCartData(List<CartItem> cartItemList) {
        // TODO
    }
}

4. 在Activity中初始化ListView和Adapter，并绑定数据：

public class CartActivity extends AppCompatActivity {

    private ListView mListView;
    private TextView mTvEmptyCart;

    private List<CartItem> mCartItemList;
    private CartAdapter mCartAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_cart);

        mListView = findViewById(R.id.list_view);
        mTvEmptyCart = findViewById(R.id.tv_empty_cart);

        // 从本地存储中读取购物车数据
        mCartItemList = readCartData();
        if (mCartItemList.size() > 0) {
            mCartAdapter = new CartAdapter(this, mCartItemList);
            mListView.setAdapter(mCartAdapter);
        } else {
            mListView.setVisibility(View.GONE);
            mTvEmptyCart.setVisibility(View.VISIBLE);
        }
    }

    // 从本地存储中读取购物车数据
    private List<CartItem> readCartData() {
        // TODO
        return new ArrayList<>();
    }
}

希望这个实例能够帮到您！