1Chat instance application 2 3Introduction to the 4 5This is a chat like ETS application, using a static layout to build "chat", "contacts", "discover", "ME" four main page. 6 7 8Directions for use 9 101. The application contains four main pages: "Chat", "address book", "Discover" and "ME". Tabs are used to switch modules 11 122. There is a back button in the upper left corner of level 2 and above pages 13 143. Click the input box at the bottom of the chat content page to enter content, and click the icon of facial expression to send pictures 15 164. Clicking on "Moments" on the "Discovery" page will enter the "Moments" page. 17 18 19Constraints and Limitations 20 211. The SDK version must be API Version 10 Release or later. 22 232. This sample requires DevEco Studio 4.0 Release to compile and run. 24