Implemented recorder and player. Callback not supported yet.

- Tested on ios.

Author: hyochan

example/README.md

@@ -1,8 +1,28 @@
 # flutter_sound_example
-
-Demonstrates how to use the flutter_sound plugin.
+This is not a playlist audio module and this library provides simple recorder and player functionalities for both `android` and `ios` platforms. This only supports default file extension for each platform. This module can also handle file from url.
 
 ## Getting Started
 
 For help getting started with Flutter, view our online
 [documentation](https://flutter.io/).
+
+## Install
+Add ```flutter_sound``` as a dependency in pubspec.yaml
+For help on adding as a dependency, view the [documentation](https://flutter.io/using-packages/).
+
+## Post Installation
+On *iOS* you need to add a usage description to `info.plist`:
+
+```xml
+<key>NSMicrophoneUsageDescription</key>
+<string>This sample uses the microphone to record your speech and convert it to text.</string>
+<key>UIBackgroundModes</key>
+<array>
+	<string>audio</string>
+</array>
+```
+
+On *Android* you need to add a permission to `AndroidManifest.xml`:
+```xml
+<uses-permission android:name="android.permission.RECORD_AUDIO" />
+```

example/android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
          to allow setting breakpoints, to provide hot reload, etc.
     -->
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
 
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.

example/ios/Runner.xcodeproj/project.pbxproj

@@ -182,6 +182,11 @@
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
 						CreatedOnToolsVersion = 7.3.1;
+						SystemCapabilities = {
+							com.apple.BackgroundModes = {
+								enabled = 1;
+							};
+						};
 					};
 				};
 			};

example/ios/Runner/Info.plist

@@ -22,6 +22,14 @@
 	<string>$(FLUTTER_BUILD_NUMBER)</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>NSMicrophoneUsageDescription</key>
+	<string>This sample uses the microphone to record your speech and convert it to text.</string>
+	<key>UIBackgroundModes</key>
+	<array>
+		<string>audio</string>
+		<string>fetch</string>
+		<string>remote-notification</string>
+	</array>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIMainStoryboardFile</key>

example/lib/main.dart

@@ -12,43 +12,185 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> {
-  String _platformVersion = 'Unknown';
+  bool _isRecording = false;
+  bool _isPlaying = false;
 
   @override
   void initState() {
     super.initState();
-    initPlatformState();
   }
 
-  // Platform messages are asynchronous, so we initialize in an async method.
-  Future<void> initPlatformState() async {
-    String platformVersion;
-    // Platform messages may fail, so we use a try/catch PlatformException.
+  void startRecorder() async{
     try {
-      platformVersion = await FlutterSound.platformVersion;
-    } on PlatformException {
-      platformVersion = 'Failed to get platform version.';
+      String path = await FlutterSound.startRecorder(null);
+      print('startRecorder: $path');
+
+      this.setState(() {
+        this._isRecording = true;
+      });
+    } catch (err) {
+      print('startRecorder error: $err');
     }
+  }
 
-    // If the widget was removed from the tree while the asynchronous platform
-    // message was in flight, we want to discard the reply rather than calling
-    // setState to update our non-existent appearance.
-    if (!mounted) return;
+  void stopRecorder() async{
+    try {
+      String result = await FlutterSound.stopRecorder();
+      print('stopRecorder: $result');
+      this.setState(() {
+        this._isRecording = false;
+      });
+    } catch (err) {
+      print('stopRecorder error: $err');
+    }
+  }
+
+  void startPlayer() async{
+    String path = await FlutterSound.startPlayer(null);
+    print('startPlayer: $path');
+  }
+
+  void stopPlayer() async{
+    String result = await FlutterSound.stopPlayer();
+    print('stopPlayer: $result');
+  }
+
+  void pausePlayer() async{
+    String result = await FlutterSound.pausePlayer();
+    print('pausePlayer: $result');
+  }
+
+  void resumePlayer() async{
+    String result = await FlutterSound.resumePlayer();
+    print('resumePlayer: $result');
+  }
 
-    setState(() {
-      _platformVersion = platformVersion;
-    });
+  void seekToPlayer(int sec) async{
+    String result = await FlutterSound.seekToPlayer(sec);
+    print('seekToPlayer: $result');
   }
 
   @override
   Widget build(BuildContext context) {
-    return new MaterialApp(
-      home: new Scaffold(
-        appBar: new AppBar(
-          title: const Text('Plugin example app'),
+    return MaterialApp(
+      home: Scaffold(
+        appBar: AppBar(
+          title: const Text('Flutter Sound'),
         ),
-        body: new Center(
-          child: new Text('Running on: $_platformVersion\n'),
+        body: ListView(
+          children: <Widget>[
+            Column(
+              crossAxisAlignment: CrossAxisAlignment.center,
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: <Widget>[
+                Container(
+                  margin: EdgeInsets.only(top: 24.0, bottom:16.0),
+                  child: Text(
+                    '00:00',
+                    style: TextStyle(
+                      fontSize: 48.0,
+                      color: Colors.black,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+            Row(
+              children: <Widget>[
+                Container(
+                  width: 56.0,
+                  height: 56.0,
+                  child: ClipOval(
+                    child: FlatButton(
+                      onPressed: () {
+                        if (!this._isRecording) {
+                          return this.startRecorder();
+                        }
+                        this.stopRecorder();
+                      },
+                      padding: EdgeInsets.all(8.0),
+                      child: Image(
+                        image: this._isRecording ? AssetImage('res/icons/ic_stop.png') : AssetImage('res/icons/ic_mic.png'),
+                      ),
+                    ),
+                  ),
+                ),
+              ],
+              mainAxisAlignment: MainAxisAlignment.center,
+              crossAxisAlignment: CrossAxisAlignment.center,
+            ),
+            Column(
+              crossAxisAlignment: CrossAxisAlignment.center,
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: <Widget>[
+                Container(
+                  margin: EdgeInsets.only(top: 60.0, bottom:16.0),
+                  child: Text(
+                    '00:00',
+                    style: TextStyle(
+                      fontSize: 48.0,
+                      color: Colors.black,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+            Row(
+              children: <Widget>[
+                Container(
+                  width: 56.0,
+                  height: 56.0,
+                  child: ClipOval(
+                    child: FlatButton(
+                      onPressed: () {
+                        startPlayer();
+                      },
+                      padding: EdgeInsets.all(8.0),
+                      child: Image(
+                        image: AssetImage('res/icons/ic_play.png'),
+                      ),
+                    ),
+                  ),
+                ),
+                Container(
+                  width: 56.0,
+                  height: 56.0,
+                  child: ClipOval(
+                    child: FlatButton(
+                      onPressed: () {
+                        pausePlayer();
+                      },
+                      padding: EdgeInsets.all(8.0),
+                      child: Image(
+                        width: 36.0,
+                        height: 36.0,
+                        image: AssetImage('res/icons/ic_pause.png'),
+                      ),
+                    ),
+                  ),
+                ),
+                Container(
+                  width: 56.0,
+                  height: 56.0,
+                  child: ClipOval(
+                    child: FlatButton(
+                      onPressed: () {
+                        stopPlayer();
+                      },
+                      padding: EdgeInsets.all(8.0),
+                      child: Image(
+                        width: 28.0,
+                        height: 28.0,
+                        image: AssetImage('res/icons/ic_stop.png'),
+                      ),
+                    ),
+                  ),
+                ),
+              ],
+              mainAxisAlignment: MainAxisAlignment.center,
+              crossAxisAlignment: CrossAxisAlignment.center,
+            ),
+          ],
         ),
       ),
     );

example/pubspec.yaml

@@ -36,9 +36,25 @@ flutter:
   uses-material-design: true
 
   # To add assets to your application, add an assets section, like this:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
+  assets:
+  - res/icons/ic_play.png
+  - res/icons/2.0x/ic_play.png
+  - res/icons/3.0x/ic_play.png
+  - res/icons/ic_stop.png
+  - res/icons/2.0x/ic_stop.png
+  - res/icons/3.0x/ic_stop.png
+  - res/icons/ic_pause.png
+  - res/icons/2.0x/ic_pause.png
+  - res/icons/3.0x/ic_pause.png
+  - res/icons/ic_mic.png
+  - res/icons/2.0x/ic_mic.png
+  - res/icons/3.0x/ic_mic.png
+  - res/icons/ic_volume_down.png
+  - res/icons/2.0x/ic_volume_down.png
+  - res/icons/3.0x/ic_volume_down.png
+  - res/icons/ic_volume_up.png
+  - res/icons/2.0x/ic_volume_up.png
+  - res/icons/3.0x/ic_volume_up.png
 
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.io/assets-and-images/#resolution-aware.

example/res/icons/2.0x/ic_mic.png

@@ -85,7 +85,7 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
 }
 
 - (void)startRecorder:(NSString*)path result: (FlutterResult)result {
-  if ([path isEqualToString:@"DEFAULT"]) {
+  if ([path class] == [NSNull class]) {
     audioFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingString:@"sound.m4a"]];
   } else {
     audioFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingString:path]];
@@ -127,6 +127,10 @@ - (void)stopRecorder:(FlutterResult)result {
 }
 
 - (void)startPlayer:(NSString*)path result: (FlutterResult)result {
+  if ([path class] == [NSNull class]) {
+    path = @"sound.m4a";
+  }
+
   if ([[path substringToIndex:4] isEqualToString:@"http"]) {
     audioFileURL = [NSURL URLWithString:path];
 
@@ -154,11 +158,7 @@ - (void)startPlayer:(NSString*)path result: (FlutterResult)result {
 
     [downloadTask resume];
   } else {
-    if ([path isEqualToString:@"DEFAULT"]) {
-      audioFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingString:@"sound.m4a"]];
-    } else {
-      audioFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingString:path]];
-    }
+    audioFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingString:path]];
 
     if (!audioPlayer) {
       audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL error:nil];

example/res/icons/2.0x/ic_pause.png

@@ -6,8 +6,51 @@ class FlutterSound {
   static const MethodChannel _channel =
       const MethodChannel('flutter_sound');
 
-  static Future<String> get platformVersion async {
+  static Future<dynamic> get platformVersion async {
     final String version = await _channel.invokeMethod('getPlatformVersion');
     return version;
   }
+
+  static Future<String> startRecorder(String uri) async {
+    String result = await _channel.invokeMethod('startRecorder', <String, dynamic> {
+      'path': uri,
+    });
+
+    return result;
+  }
+
+  static Future<String> stopRecorder() async {
+    String result = await _channel.invokeMethod('stopRecorder');
+    return result;
+  }
+
+  static Future<String> startPlayer(String uri) async {
+    String result = await _channel.invokeMethod('startPlayer', <String, dynamic> {
+      'path': uri,
+    });
+
+    return result;
+  }
+
+  static Future<String> stopPlayer() async {
+    String result = await _channel.invokeMethod('stopPlayer');
+    return result;
+  }
+
+  static Future<String> pausePlayer() async {
+    String result = await _channel.invokeMethod('pausePlayer');
+    return result;
+  }
+
+  static Future<String> resumePlayer() async {
+    String result= await _channel.invokeMethod('resumePlayer');
+    return result;
+  }
+
+  static Future<String> seekToPlayer(int sec) async {
+    String result = await _channel.invokeMethod('startPlayer', <String, dynamic> {
+      'sec': sec,
+    });
+    return result;
+  }
 }