Rxjava + retro fit + MVP to realize shopping cart

This example shares the specific code of rxjava retro to display the shopping cart for your reference. The specific contents are as follows

Let's show you the renderings first

Frame structure:

1. Project framework: MVP, fresco for picture loading, The network request is implemented with okhttp + retrofit (self encapsulation and single example mode). 2. Complete the addition of shopping cart data (if there is no data in the interface, you can use the interface tool to add data). 3. The user-defined view implements the addition and subtraction button. Each time you click the addition and subtraction button, the total number and total price in the item will be changed accordingly. 4. When the quantity is 1, click the minus sign, the quantity will remain unchanged, and toast will prompt the user that the minimum quantity is 1. 5. The total number and total price at the bottom are the total price and total price in all item items, and the quantity and price in each item For the change of the grid, the total price at the bottom shall be linked with it. 6 Realize the function of single selection and inverse selection of all, and enter the default selection of all for the first time. When the item is not selected, the total number and total price are not included in the bottom data. When the selected status is changed, the total number and total price at the bottom can be modified correctly. 7 Click the delete button to delete the item, the total number and total price at the bottom can be modified correctly, and the interface data can be deleted.

Add the required dependencies and networking permissions

Subcontracting before using MVP mode

Net package

API

ServiceAPI

Successful interface

Retrofit packaging

Bean package

Bean class of detail page

Bean added to shopping cart

Commodity category

app

View layer

Write two interfaces first

Master page layout

Main page

Second page layout

Implementation of shopping cart code

Eventbus package

Set a quantity and price class

EventBus

model

Implement the interface of the model layer of the detail page

Implementation details page model

Shopping cart model

Presenter layer

Level P of detail page

P floor of shopping cart

adapter

group_ item. xml

child_ item. xml

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.