Activity Recognition App

Our mobile app for activity recognition.

Why React Native?

React Native is a suitable choice for our Sensor-Based Activity Recognition app due to several advantages:

• Firstly, it offers cross-platform compatibility, allowing the app to run on both iOS and Android devices.
• Secondly, React Native provides a JavaScript-based development environment, enabling us to write code once and reuse it across platforms, saving time and effort.
• Thirdly, React Native provides access to a wide range of native device functionalities, including sensor data collection, through various community-supported libraries. This allows for efficient sensor integration and accurate activity recognition.

Compared to other cross-platform frameworks, React Native's performance is closer to that of native apps since it uses native components and APIs, resulting in a smoother user experience. Additionally, React Native's large and active community ensures ongoing support, frequent updates, and a wealth of resources for developers.

Setup

• Install Node.js (https://nodejs.org/en/download/)
• Install this project's dependencies by running npm install in the project root directory

How to run

See this section for how to run the app on your device or emulator.

Android

Pre-requisites:

• Android Studio
• JRE 16/17 (Via Android Studio: Gradle Settings, then open Gradle JRE dropdown and select "Download JDK")

Create ENV Variables in .bashrc or .zshrc (update paths to your own):

• export JAVA_HOME=/Users/yvokeller/Library/Java/JavaVirtualMachines/openjdk-20.0.1/Contents/Home
• export PATH=$PATH:/Users/yvokeller/Library/Android/sdk/platform-tools

Run instructions for Android:

• Have an Android emulator running (quickest way to get started), or a device connected.
• npm run android

iOS

Pre-requisites:

• Install Xcode
• Add your Apple ID to Xcode (Xcode -> Preferences -> Accounts)
• Install CocoaPods: sudo gem install cocoapods
• Install pods: cd ios && pod install

Run instructions for iOS:

• npx react-native run-ios
• npx react-native run-ios --device "itsfrdm" (run on specific physical device)

or

• Open ActivityRecognitionApp/ios/ActivityRecognitionApp.xcworkspace in Xcode or run xed -b ios
• Hit the Run button

Run instructions for macOS:

• See https://aka.ms/ReactNativeGuideMacOS for the latest up-to-date instructions.

Listing Available Devices

To list your availble devices for running the app, refer to below commands.

iOS:

• xcrun simctl list devices

Android:

• adb devices
• npx react-native run-android --deviceId adb-R5CR202SXQE-fMiGjJ._adb-tls-connect._tcp.

Realeasing the App

Android

You can download the .apk in this repo's release and install our app: Android App .apk

Build the Apk file

npm run build-android

The generated APK file can be found at: .\android\app\build\outputs\apk\release\app-release.apk

Install the Apk file on a device

adb install -r .\android\app\build\outputs\apk\release\app-release.apk

You can leave out the -r flag if you want to install the app for the first time.

iOS

For releasing on iOS, you need a paid Apple Developer account. It is not possible for us to provide an .ipa file without that. You can still setup XCode on your machine and install & use our app that way.

or, buy an Android ;)

Changing the Host

When you don't want to use our backend-api, you need to replace the host https://sbar.fuet.ch in the ./App.tsx file with your own host.