A Flutter plugin for torch/flashlight/lamp control. Offers API for:
- checking if torch is available
- turning the torch on and off
- toggling the torch
- flashing the torch for a given duration
Platforms supported by the plugin:
- Android old API levels 16 to 19 (4.1 to 4.4) via android.hardware.Camera
- Android API levels 21 to 31 (5.+) via android.hardware.camera2
- iOS (currently untested)
Add torch_control: 0.2.0 to your pubspec.yaml file
Set permissions for Android
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.FLASHLIGHT"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
To check if a torch is available and ready to use:
await TorchControl.ready();
To turn on and off the torch:
TorchControl.turnOn();
TorchControl.turnOff();
TorchControl.turn(true);
TorchControl.turn(false);
To toggle the torch:
TorchControl.toggle(); // if is on it is turned off an vice versa
To check the torch state:
TorchControl.isOn();
TorchControl.isOff();
- In the beginning the torch state is initialized to off. To ensure correctness of the on/off status
you should call
TorchControl.turnOff()(orTorchControl.turnOn()) somewhere at the beginning.
To flash the torch for a given duration:
TorchControl.flash(const Duration(seconds: 1));
See the companion example for demonstration on how to use the plugin.
There are two of my apps in PlayStore that use this plugin:
- Flashlight Torcher - Yet another torch/flashlight/lamp app with source code available.
- Count On Me - A tally counter app with many options, advanced features, statistics, and various methods of counting.
Why yet another torch plugin? I needed a simple plugin for controlling the torch with the support for null safety, Dart 2, and a bit more flexible interface which was not readily available at the time. Moreover, I've never written a Flutter plugin as well as any Kotlin code before.