manual_camera 0.0.3

A Flutter plugin for manually controlling the camera on Android devices. All the native functions of the Flutter official Camera plugin are available.

Manual Camera Plugin

This plugin is a modified version of the native Flutter camera plugin.

This version allows the definition of manual parameters for the Android camera:

Feature	Values	Type	Description
enableFlash	true/false	bool	Turn flash on or off
focusDistance	0 (auto) - +∞	double	Distance in meters from camera to focused object
iso	0 (auto) - +∞	int	Sensor's sensitivity to light
shutterSpeed	0 (auto) - +∞	int	1s / shutterSpeed = duration of the sensor exposure
whiteBalance	...	WhiteBalancePreset	White balance Android options

Installation

First, add manual_camera as a dependency in your pubspec.yaml file.

dependencies:
  flutter:
    sdk: flutter
  manual_camera: ^0.0.3 // add manual_camera plugin

iOS

Add two rows to the ios/Runner/Info.plist:

• one with the key Privacy - Camera Usage Description and a usage description.
• and one with the key Privacy - Microphone Usage Description and a usage description.

Or in text format add the key:

<key>NSCameraUsageDescription</key>
<string>Can I use the camera please?</string>
<key>NSMicrophoneUsageDescription</key>
<string>Can I use the mic please?</string>

Android

Change the minimum Android sdk version to 21 (or higher) in your android/app/build.gradle file.

minSdkVersion 21

Example

Here is a small example flutter app displaying a full screen camera preview.

import 'dart:async';
import 'package:manual_camera/camera.dart';
import 'package:camera/camera.dart';

List<CameraDescription> cameras;

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  cameras = await availableCameras();
  runApp(CameraApp());
}

class CameraApp extends StatefulWidget {
  @override
  _CameraAppState createState() => _CameraAppState();
}

class _CameraAppState extends State<CameraApp> {
  CameraController controller;

  @override
  void initState() {
    super.initState();
    controller = CameraController(
      cameras[0],
      ResolutionPreset.medium,
      iso: 100,
      shutterSpeed: 30,
      whiteBalance: WhiteBalancePreset.cloudy,
      focusDistance: 0.1,
    );
    controller.initialize().then((_) {
      if (!mounted) {
        return;
      }
      setState(() {});
      Future.delayed(
        Duration(
          milliseconds: 1000,
        ),
      ).then((_) => _cameraController.flash(true));
    });
  }

  @override
  void dispose() {
    controller?.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    if (!controller.value.isInitialized) {
      return Container();
    }
    return AspectRatio(
        aspectRatio:
        controller.value.aspectRatio,
        child: CameraPreview(controller));
  }
}

Note: This plugin is still under development, and some APIs might not be available yet. I hope that in the future IOS manual exposition will also be available.