add palyback method in iOS part

Author: emj365

src/ios/AudioRecorderAPI.h

@@ -5,13 +5,13 @@
   NSString *recorderFilePath;
   NSNumber *duration;
   AVAudioRecorder *recorder;
+  AVAudioPlayer *player;
   CDVPluginResult *pluginResult;
   CDVInvokedUrlCommand *_command;
 }
 
-@property(assign) id delegate;
-
 - (void)record:(CDVInvokedUrlCommand*)command;
 - (void)stop:(CDVInvokedUrlCommand*)command;
+- (void)playback:(CDVInvokedUrlCommand*)command;
 
 @end

src/ios/AudioRecorderAPI.m

@@ -69,6 +69,30 @@ - (void)stop:(CDVInvokedUrlCommand*)command {
   NSLog(@"stopped");
 }
 
+- (void)playback:(CDVInvokedUrlCommand*)command {
+  _command = command;
+  [self.commandDelegate runInBackground:^{
+    NSLog(@"recording playback");
+    NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
+    NSError *err;
+    player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&err];
+    player.numberOfLoops = 0;
+    player.delegate = self;
+    [player prepareToPlay];
+    [player play];
+    if (err) {
+      NSLog(@"%@ %d %@", [err domain], [err code], [[err userInfo] description]);
+    }
+    NSLog(@"playing");
+  }];
+}
+
+- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag {
+  NSLog(@"audioPlayerDidFinishPlaying");
+  pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsString:@"playbackComplete"];
+  [self.commandDelegate sendPluginResult:pluginResult callbackId:_command.callbackId];
+}
+
 - (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag {
   NSURL *url = [NSURL fileURLWithPath: recorderFilePath];
   NSError *err = nil;

www/AudioRecorderAPI.js

@@ -9,6 +9,10 @@ AudioRecorderAPI.prototype.stop = function (successCallback, errorCallback) {
   cordova.exec(successCallback, errorCallback, "AudioRecorderAPI", "stop", []);
 };
 
+AudioRecorderAPI.prototype.playback = function (successCallback, errorCallback) {
+  cordova.exec(successCallback, errorCallback, "AudioRecorderAPI", "playback", []);
+};
+
 AudioRecorderAPI.install = function () {
   if (!window.plugins) {
     window.plugins = {};