首页 > 代码库 > iOS:iOS10和Xcode8 一起创建Siri 功能

iOS:iOS10和Xcode8 一起创建Siri 功能

前奏:

  iOS 10 出来之后,我们开发者也可以使用类似Siri的功能。它是使用Siri里面的一个语音识别框架Speech framework来处理siri的。现在, 让我们来看看 一些 主要的代码吧。 我们需要一个 UITextView 和 UIButton 就 能体现了。

 

实现:

  • 第一步:定义属性
@interface ViewController ()  <SFSpeechRecognizerDelegate>
@property (strong, nonatomic) UIButton *siriBtu;//siri按钮
@property (strong, nonatomic) UITextView *siriTextView; //显示语音转化成的文本
@property (strong, nonatomic) SFSpeechRecognitionTask *recognitionTask; //语音识别任务
@property (strong, nonatomic)SFSpeechRecognizer *speechRecognizer; //语音识别器
@property (strong, nonatomic) SFSpeechAudioBufferRecognitionRequest *recognitionRequest; //识别请求
@property (strong, nonatomic)AVAudioEngine *audioEngine; //录音引擎
@end
  • 第二步:进行语音识别检测
- (void)viewDidLoad {
    [super viewDidLoad];

//设备识别语言为中文 NSLocale
*cale = [[NSLocale alloc]initWithLocaleIdentifier:@"zh-CN"]; self.speechRecognizer = [[SFSpeechRecognizer alloc]initWithLocale:cale]; self.siriBtu.enabled = false;

  //设置代理 _speechRecognizer.
delegate = self;

  //发送语音认证请求(首先要判断设备是否支持语音识别功能) [SFSpeechRecognizer requestAuthorization:
^(SFSpeechRecognizerAuthorizationStatus status) { bool isButtonEnabled = false; switch (status) { case SFSpeechRecognizerAuthorizationStatusAuthorized: isButtonEnabled = true; NSLog(@"可以语音识别"); break; case SFSpeechRecognizerAuthorizationStatusDenied: isButtonEnabled = false; NSLog(@"用户被拒绝访问语音识别"); break; case SFSpeechRecognizerAuthorizationStatusRestricted: isButtonEnabled = false; NSLog(@"不能在该设备上进行语音识别"); break; case SFSpeechRecognizerAuthorizationStatusNotDetermined: isButtonEnabled = false; NSLog(@"没有授权语音识别"); break; default: break; } self.siriBtu.enabled = isButtonEnabled; }];

  //创建录音引擎 self.audioEngine
= [[AVAudioEngine alloc]init]; }
  • 第三步:按钮的点击事件
- (void)microphoneTap:(UIButton *)sender {
    if ([self.audioEngine isRunning]) {
        [self.audioEngine stop];
        [self.recognitionRequest endAudio];
        self.siriBtu.enabled = YES;
        [self.siriBtu setTitle:@"开始录制" forState:UIControlStateNormal];
    }else{
        [self startRecording];
        [self.siriBtu setTitle:@"停止录制" forState:UIControlStateNormal];
    }
}
  • 第四步:开始录制语音,并将语音转为文本
-(void)startRecording{
    if (self.recognitionTask) {
        [self.recognitionTask cancel];
        self.recognitionTask = nil;
    }
    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
    bool  audioBool = [audioSession setCategory:AVAudioSessionCategoryRecord error:nil];
    bool  audioBool1= [audioSession setMode:AVAudioSessionModeMeasurement error:nil];
    bool  audioBool2= [audioSession setActive:true withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];
    if (audioBool || audioBool1||  audioBool2) {
        NSLog(@"可以使用");
    }else{
        NSLog(@"这里说明有的功能不支持");
    }
    self.recognitionRequest = [[SFSpeechAudioBufferRecognitionRequest alloc]init];
    AVAudioInputNode *inputNode = self.audioEngine.inputNode;
    SFSpeechAudioBufferRecognitionRequest *recognitionRequest;
    self.recognitionRequest.shouldReportPartialResults = true;

  //开始识别任务 self.recognitionTask
= [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) { bool isFinal = false; if (result) { self.siriTextView.text = [[result bestTranscription] formattedString]; //语音转文本 isFinal = [result isFinal]; } if (error || isFinal) { [self.audioEngine stop]; [inputNode removeTapOnBus:0]; self.recognitionRequest = nil; self.recognitionTask = nil; self.siriBtu.enabled = true; } }]; AVAudioFormat *recordingFormat = [inputNode outputFormatForBus:0]; [inputNode installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) { [self.recognitionRequest appendAudioPCMBuffer:buffer]; }]; [self.audioEngine prepare]; bool audioEngineBool = [self.audioEngine startAndReturnError:nil]; NSLog(@"%d",audioEngineBool); self.siriTextView.text = @"我是小冰!Siri 冰,你说我听"; }
  • 第五步:实现这个代理方法,就实现siri语音功能了
-(void)speechRecognizer:(SFSpeechRecognizer *)speechRecognizer availabilityDidChange:(BOOL)available{
    if(available){
        self.siriBtu.enabled = true;
    }else{
        self.siriBtu.enabled = false;
    }
}

为原博主点赞:http://www.jianshu.com/p/b29069529bc2

 

iOS:iOS10和Xcode8 一起创建Siri 功能