forked from mahmuttaskiran/flutter_android_cameraview
/
main.dart
316 lines (295 loc) · 9.12 KB
/
main.dart
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import 'dart:io';
import 'dart:math';
import 'package:path/path.dart' as p;
import 'package:flutter/material.dart';
import 'package:flutter_camera_view/flutter_camera_view.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:video_player/video_player.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
@override
void initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: Builder(
builder: (context) {
return TextButton(
onPressed: () async {
Map<Permission, PermissionStatus> statuses = await [
Permission.camera,
Permission.microphone,
Permission.storage,
].request();
if (!statuses.values.contains(PermissionStatus.denied)) {
Navigator.push(
context,
MaterialPageRoute(
builder: (_) {
return CameraViewPage();
},
),
);
}
},
child: Center(
child: Text('open camera'),
),
);
},
),
),
);
}
}
class CameraViewPage extends StatefulWidget {
@override
_CameraViewPageState createState() => _CameraViewPageState();
}
class _CameraViewPageState extends State<CameraViewPage> {
final FlutterCameraController controller = FlutterCameraController(
facing: CameraFacing.back,
resolutionPreset: ResolutionPreset.QHD,
onCameraError: (e, st) {},
);
String? path;
@override
void initState() {
super.initState();
}
@override
void dispose() {
controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black,
body: Stack(
alignment: Alignment.bottomCenter,
children: <Widget>[
CameraView(
controller: controller,
),
ValueListenableBuilder(
key: ValueKey(controller.value.state),
valueListenable: controller,
builder: (context, CameraValue value, child) {
if (value.state == CameraState.ready) {
return Container();
} else if (value.state == CameraState.preparing) {
return Container(
color: Colors.black,
);
}
return Container(
color: Colors.blue,
);
},
),
Padding(
padding: const EdgeInsets.all(20.0),
child: _buildControlButtons(),
)
],
),
);
}
Widget _buildControlButtons() {
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
if (null != path && !controller.value.isRecordingVideo)
IconButton(
icon: Icon(
Icons.image,
color: Colors.white,
),
onPressed: () {
if (p.extension(path!) == '.jpg') {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) {
return ImageScreen(
file: File(path!),
);
},
),
);
} else {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) {
return VideoPlayerScreen(
file: File(path!),
);
},
),
);
}
},
),
if (!controller.value.isRecordingVideo)
IconButton(
icon: Icon(
Icons.switch_camera,
color: Colors.white,
),
onPressed: () async {
await controller.toggleFacing();
setState(() {});
},
),
if (!controller.value.isRecordingVideo)
FloatingActionButton(
backgroundColor: Colors.green,
child: Icon(Icons.camera),
onPressed: () async {
Directory? directory;
if (Platform.isIOS) {
directory = await getApplicationDocumentsDirectory();
} else {
directory = await getExternalStorageDirectory();
}
path =
'${directory!.path}/imagefile_${Random().nextInt(100000)}.jpg';
await controller.takePicture(File(path!), saveToLibrary: true);
setState(() {});
},
),
FloatingActionButton(
backgroundColor: Colors.red,
child: Icon(
controller.value.isRecordingVideo ? Icons.stop : Icons.videocam),
onPressed: () async {
if (controller.value.isRecordingVideo) {
await controller.stopRecording();
print('videoRecordingEnd: $path');
} else {
Directory? directory;
if (Platform.isIOS) {
directory = await getApplicationDocumentsDirectory();
} else {
directory = await getExternalStorageDirectory();
}
path =
'${directory!.path}/videofile_${Random().nextInt(100000)}.mp4';
final isRecording = await controller.startRecording(
File(path!),
saveToLibrary: true,
);
print("startRecordButton: isRecording: $isRecording");
}
setState(() {});
},
),
if (!controller.value.isRecordingVideo &&
controller.value.facing == CameraFacing.back)
IconButton(
icon: Icon(
controller.value.flash == CameraFlash.off
? Icons.flash_off
: Icons.flash_on,
color: Colors.white,
),
onPressed: () async {
if (controller.value.flash == CameraFlash.on) {
controller.setFlash(CameraFlash.off);
} else {
controller.setFlash(CameraFlash.off);
}
setState(() {});
},
),
],
);
}
}
class ImageScreen extends StatelessWidget {
const ImageScreen({Key? key, this.file}) : super(key: key);
final File? file;
@override
Widget build(BuildContext context) {
return Material(
color: Colors.black,
child: Center(
child: Image.file(file!),
),
);
}
}
class VideoPlayerScreen extends StatefulWidget {
final File? file;
VideoPlayerScreen({this.file, Key? key}) : super(key: key);
@override
_VideoPlayerScreenState createState() => _VideoPlayerScreenState();
}
class _VideoPlayerScreenState extends State<VideoPlayerScreen> {
late VideoPlayerController _controller;
Future<void>? _initializeVideoPlayerFuture;
@override
void initState() {
// Create an store the VideoPlayerController. The VideoPlayerController
// offers several different constructors to play videos from assets, files,
// or the internet.
print('fileInformation: ${widget.file}');
print('fileSize: ${widget.file!.lengthSync()}');
_controller = VideoPlayerController.file(
widget.file!,
);
_initializeVideoPlayerFuture = _controller.initialize();
super.initState();
}
@override
void dispose() {
print("isDisposeCalled?true");
// Ensure disposing of the VideoPlayerController to free up resources.
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () {
// if (_controller.value.isInitialized) {
// _controller.setLooping(true);
// _controller.play();
// }
},
child: FutureBuilder(
future: _initializeVideoPlayerFuture,
builder: (context, snapshot) {
if (snapshot.connectionState == ConnectionState.done) {
_controller.setLooping(true);
_controller.play();
// If the VideoPlayerController has finished initialization, use
// the data it provides to limit the aspect ratio of the VideoPlayer.
return AspectRatio(
aspectRatio: _controller.value.aspectRatio,
// Use the VideoPlayer widget to display the video.
child: VideoPlayer(_controller),
);
} else {
// If the VideoPlayerController is still initializing, show a
// loading spinner.
return Center(child: CircularProgressIndicator());
}
},
),
);
}
}