A simple app that regularly publishes to a configurable MQTT topic whenever connected to a given WiFi network. This can be used to integrate the presence of your phone in home automation.
The app uses the built-in Android alarm manager, so notifications are sent even if the phone is in stand-by.
The app uses the default Android CA trust store for checking the server certificate validity. You can simply add your certificate via:
- Android 4.0 - 7.1:
Settings→Security→Install from SD card
- Android 8.0+:
Settings→Security & location→Encryption & credentials→Install from SD card
- ACCESS_COARSE_LOCATION: on Android 9+, necessary to retrieve SSID of connected WiFi (you do not need to grant the permission in Android 6.0 - 8.1 for the app to work)
- ACCESS_NETWORK_STATE: necessary to register network change listener
- ACCESS_WIFI_STATE: necessary to retrieve SSID of connected WiFi
- INTERNET: only necessary if your MQTT server is not running locally
- FOREGROUND_SERVICE: necessary to send notifications
- RECEIVE_BOOT_COMPLETED: necessary to start service on start-up
- more conditions when to send notification
- time ranges
- presence of Bluetooth beacons
- actual location
- ...
- ...