1# applications_call 2 3## 1 Introduction 4 5 Based on the capabilities of the system platform, design and develop call applications, providing voice calls, video calls, call settings, mobile network settings, SIM card management settings, emergency dialing, and functions for adding personal emergency information. Build models from different perspectives and design the architecture of the call application to ensure security, resilience, reliability, privacy, etc. while satisfying basic functions. 6 7### 1.2 Introduction to Architecture Diagram: 8 9 10 11The application adopts a multi-module design as a whole, which is used to handle the business logic and data management of the call application and the interface display. Each module follows the division principle of the above architecture. 12The functions of each module are as follows: 13 14* FA-UI: Interface display responsible for handling and user interaction 15* Public Module: responsible for the processing of public methods, assisting in the display of the connected interface, the interaction of business logic and data management 16* Adapter Module: responsible for business logic and data management 17 18The important classes and their functions in each layer of the application are shown in the following table 19 20| Module | Function | Class Name | Function | 21| ---- | ---- | ---- | ---- | 22| FA-UI | Interface Display | Voice Calls FA | Mainly provides user interface related to voice calls | 23| FA-UI | Interface Display | video Calls FA | Mainly provide video call related user interface | 24| FA-UI | Interface display | SIMCard Management FA | SIM card related user interaction management interface | 25| FA-UI | Interface Display | Emergency Dialing FA | Emergency Dialing User Interface | 26| FA-UI | Interface display | Call Settings FA | User interaction interface related to call settings | 27| FA-UI | Interface Display | Personal Emergency Information FA | Personal Emergency Number User Interface | 28| FA-UI | Interface Display | Mobile NetWork Settings FA | Mobile NetWork Settings User Interface | 29| Public Module | Common Components and Methods | Common Components | Processing Classes for Public Components | 30| Adapter Module | Business Processing Interface | Dial Module | Handling Dial-related Functions | 31| Adapter Module | Business Processing Interface | Status Monitoring Module | Monitor Business Status Module | 32 33## 2. Directories 34``` 35/applications_call 36├── callui 37│ └── src 38│ └── main 39│ ├── ets 40│ ├── default 41│ ├── assets 42│ ├── common 43│ ├── components 44│ ├── configs 45│ ├── constant 46│ ├── utils 47│ ├── model 48│ ├── pages 49| ├── app.ets 50│ ├── ServiceAbility 51│ ├── callManagerService.ets 52│ ├── service.ts 53│ ├── telephonyApi.ets 54│ ├── resources 55| ├── base 56| ├── zh_CN 57│ ├── config.json 58├── doc 59| ├── image 60| ├── Instructions.md 61├── mobiledatasettings 62│ └── src 63│ └── main 64│ ├── ets 65│ ├── default 66│ ├── pages 67│ ├── resources 68| ├── base 69| ├── zh_CN 70│ ├── config.json 71├── figures 72│ └── callui_en.png 73├── signature 74│ └── com.ohos.callui.p7b 75├── LICENSE 76├── build.gradle 77``` 78 79## 3. Instructions for use 80 81* See instructions for use ([Instructions for use](doc/Instructions.md)) 82 83## 4. Related positions 84 85* system applications 86 87[**applications_call**](https://gitee.com/openharmony/applications_call) 88
