Design and Implementation of Address Book Based on Android Technology

This paper designs and realizes address book based on Android technology. The system can add, query, modify, and delete information such as name, phone number, WeChat, and address in the address book. After the user input data such as name, phone number, WeChat, and address in four EditTexts, the user click the “ADD” button to add data to the database. The user can click the “QUERY” button to display the database data to the mobile interface. When the user clicks the “MODIFY” button, the data are modified and saved to the database. When the user clicks the “DELETE” button, the data in the database are deleted.