With the development of economy and the change of people's consumption consciousness, the concept of environmental protection consumption has been deeply rooted in people's hearts, and second-hand trading has become a fashionable lifestyle. Therefore, the second-hand trading market is becoming increasingly popular, and the mode of bartering or realizing idle items is gradually sought after. Therefore, it is necessary to develop a second-hand transaction APP for idle items. What about the second-hand trading app for idle items? 1. What problems can the second-hand trading APP for idle items solve? 1. In view of the current problem of excessive consumption by users, pickpockets have become accustomed to starting with it, but how to deal with it has become an important issue that our enterprise users need to consider more carefully. When the tentacles of e-commerce are pervasive and can be started on mobile phones, many people begin to develop and face the problem of excessive consumption. If the pickpocket is trying to solve the actual case beforehand, there seems to be no way to solve the case afterwards for the second-hand market transactions. By helping to manage the user data through second-hand sales, some unnecessary losses can be reduced. In the context of increasingly hot secondary market transactions, more and more mobile phones are used to focus on secondary market transaction services, which is also one of the factors. APP development for second-hand transactions has gradually become popular. 2. Combined with various content resources, it is convenient for users to watch online. The network information platform fully integrates the advantages of educational content production technology and provides the function of content display system on the mobile phone client. The development of second-hand trading APP has shaped a comprehensive content and service management platform. Combining with the content teaching resources of each of our students, it can be more convenient for users to analyze and view online on mobile phones, which is more conducive to improving the time for users to browse online when the application is fragmented, and meets the requirements of modern people in China for viewing content on mobile phones. 3. Accurately develop the second-hand trading APP to meet the demand of buyers and sellers for second-hand trading, so as to meet the accurate search function and transfer of second-hand products by the starter, and also play the role of putting on the shelves to meet the seller's demand for the goods sold. Both parties can communicate through the online platform and be familiar with the content of demand cognition, or it is a very important thing, which is more suitable for the initial demand of purchase and meets the different needs of both parties. In the process of trading, the modern online trading platform for selling products is started, and the application programs used by users are analyzed to provide more convenient service segmentation functions and enhance users' applications in a global sense. Second, the mature idle goods second-hand trading APP case analysis Idle fish Idle fish is an application software that can solve the problem that you have nowhere to put idle goods. The idle fish client can sell idle fish without registering a store: find a new owner for the puppy of the dog at home, share the special goods brought back by the tour with other travelers, and give toys that no longer like to eat to other children. Not only do transactions, but people with the same hobbies and interests also get together. Zhuanzhuan, as a second-hand trading platform invested by Tencent, has also attracted many consumers. The second-hand products transferred and operated are mainly digital products, including a series of mobile phones, cameras and computers. In addition to ordinary three-party sellers, there are also self-operated stores for transfer. Self-operated stores mainly sell second-hand digital products, such as iPhone, Samsung and Huawei. If you want to buy second-hand digital products, turning around is a good platform. Looking for a beautiful machine looking for a beautiful machine is a brand owned by Shenzhen Wanshifu Technology Co., Ltd., and it is a self-operated brand of second-hand mobile phones in China. By the end of 2018150,000 users, the platform has accumulated real praise from190,000 users, and relying on explosive user reputation, it has quickly become a unicorn focusing on the second-hand mobile phone industry with a monthly growth rate of 20%. Love Recycling Love Recycling app is a mobile phone app launched by Love Recycling Network. Love recycling network is a domestic C2B electronic product bidding recycling network, focusing on mobile phones, notebooks and other digital electronic fields. It circumvents the possibility that second-hand mobile phones are undervalued by bidding, buys second-hand electronic products from enterprises and individuals at high prices, provides users with one-stop idle processing services, and contributes to the cause of green environmental protection. Pat Yeion and Pat Yeion's self-built team. The main products are mobile phones. YEATION team controls all links from supply, quality inspection, sales to after-sales through self-management to provide users with second-hand goods. All goods on the shelves must pass professional testing and grading certification before they can be sold on the shelves. Third, the function reference of the second-hand transaction APP for idle items 1. Idle goods display homepage recommends different idle goods for users, which can be distinguished by types and styles, and can also be searched by keywords, so as to facilitate users to browse, select and buy according to their own needs. 2. After the idle goods are sold and certified, users can fill in the relevant information, release the sales information and put the goods on the shelves. Users can communicate in two directions through pictures, words and voices to help them sell idle items as soon as possible. 3. Buy idle goods to understand the completeness and newness of the goods. After confirming the need for goods, users can pay online. The money will be temporarily stored in a third-party platform and will automatically enter the seller's background after the transaction is completed. The trading platform has a third-party supervision and management mechanism to ensure fair and just trading. 4. Online appraisal For high-value second-hand items, such as jewelry and brand-name bags, you can apply for platform intervention, and then conduct transactions after appraisal, ensuring the safety of both parties' funds. 5. Exchange of goods. In the exchange part, users can create their own orders, publish commodity information and fill in exchange requirements. Users can chat privately, and qualified users can initiate transaction requests. 6. Commodity Lease In this function, idle goods can be leased offline, and the lease period and amount can be set. Users who need it can conduct secured transactions on the platform. Fourth, the second-hand transaction APP for idle items has two suggestions: 1, transaction information review, to ensure transaction security. Nowadays, when people buy things in second-hand shopping malls, they are most afraid of buying the wrong goods. Although they are all second-hand, the transaction needs to be cautious. Merchants should do a good job in verifying the real names of various commodity publishers and have a deposit when trading. In this way, when the legitimate rights and interests of customers are infringed, they can be responsible for tracking and avoid some unscrupulous merchants using this platform to publish all kinds of messy information. Don't have too many kinds of second-hand goods. There are too many kinds of second-hand goods, which will affect the concentration of brands and make people feel that it is a bad market for groceries. If the electrical appliances are mainly second-hand appliances, books are mainly book transactions, and building materials are mainly building materials, it will help to build brand advantages and break through development. V. APP development process for second-hand transaction of idle goods 1. The first step in the development of demand collation APP is demand collation. First, enterprises and merchants sort out the demand documents, and then fully communicate with the development company, sort out the functional requirements of APP development and the development cycle and cost of the project, and finalize the preliminary development plan. 2. The project manager of the prototype design and development company is mainly responsible for the prototype design, and the project manager carries out various designs according to the established development plan, and carries out the preliminary prototype design. Then submit it to the customer for review and modification. After the review is passed, you can communicate with the development technicians for specific details and carry out subsequent development according to the prototype design. 3. The UI design interface of 3.APP is also the user's first impression, so it is extremely important, which requires careful design by UI designers. UI designers need to design the interface of the APP according to the prototype design, and every detail should be carefully considered to finally design an elegant interface that can attract users. 4. After getting the UI renderings, the development technicians of the functional development company will restore every detail of the design drawings through code, and then carry out background data development, which is extremely important for both front-end design and back-end data development. They determine the overall functional effect of the application. 5. Functional testing When all the functions of the APP are developed, the testers of the development company will test the functions of the entire APP to see whether its functions are perfect and whether it runs smoothly. If problems are found, they should be promptly fed back to the developers for modification, and the test results can not be handed over to corporate customers for acceptance until there is no problem.