iOS,系统语音合成语音识别

1.系统语音合成语音识别

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#import "ViewController.h" //导入语音合成系统库 #import <AVFoundation/AVFoundation.h> //导入语音识别系统库 #import <Speech/Speech.h>   @interface ViewController ()<AVSpeechSynthesizerDelegate,SFSpeechRecognitionTaskDelegate,NFCTagReaderSessionDelegate> @property (nonatomic, strong) AVSpeechSynthesizer *synthesizer;//语音合成iOS7开始支持   //iOS语音识别 @property (nonatomic, strong) SFSpeechRecognizer *speechRecognizer; @property (nonatomic, strong) AVAudioEngine *audioEngine; @property (nonatomic, strong) SFSpeechAudioBufferRecognitionRequest *recognitionRequest;   @property (nonatomic, strong) UITextView *textView; @property (nonatomic, strong) UIButton *recordBtn; @property (nonatomic, assign) BOOL isRecord;     @end   @implementation ViewController   - (void)viewDidLoad {     [super viewDidLoad];     [self.view setBackgroundColor:[UIColor whiteColor]];     float left=20;     self.textView=[[UITextView alloc] initWithFrame:CGRectMake(15, 44, self.view.frame.size.width-30, 120)];     self.textView.text=@"iOS7新特性，语音合成测试用例";     self.textView.textColor=[UIColor blackColor];     self.textView.font=[UIFont systemFontOfSize:16.0f];     self.textView.layer.borderWidth=1.0f;     self.textView.layer.borderColor=[UIColor grayColor].CGColor;     [self.view addSubview:self.textView];           UIButton *goBtn=[[UIButton alloc] initWithFrame:CGRectMake(left, self.textView.frame.origin.y+self.textView.frame.size.height+10, self.view.frame.size.width-2*left, 50)];     [goBtn setTitle:@"合成播放" forState:UIControlStateNormal];     [goBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];     [goBtn setBackgroundColor:[UIColor grayColor]];     [goBtn addTarget:self action:@selector(speakAction) forControlEvents:UIControlEventTouchUpInside];     [self.view addSubview:goBtn];           self.recordBtn=[[UIButton alloc] initWithFrame:CGRectMake(left, goBtn.frame.origin.y+goBtn.frame.size.height+10, self.view.frame.size.width-2*left, 50)];     [self.recordBtn setTitle:@"录制识别" forState:UIControlStateNormal];     [self.recordBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];     [self.recordBtn setBackgroundColor:[UIColor grayColor]];     [self.recordBtn addTarget:self action:@selector(recordAction) forControlEvents:UIControlEventTouchUpInside];     [self.view addSubview:self.recordBtn];     self.isRecord=NO; }   //结束触摸 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {     //isExclusiveTouch一个布尔值来指示接收机处理触摸事件。     //没有触摸_textUser进入if内操作     if (![self.textView isExclusiveTouch]) {         //resignFirstResponder取消第一响应者状态的。如果对textfield使用的话，那么调用这个方法，textfield的第一响应者状态就会取消，然后键盘就消失了。         [self.textView resignFirstResponder];     } }     -(void)recordAction{           if (self.isRecord) {         self.isRecord=NO;         [self stopRecording];         [self.recordBtn setTitle:@"录制识别" forState:UIControlStateNormal];     }else{         [SFSpeechRecognizer requestAuthorization:^(SFSpeechRecognizerAuthorizationStatus status) {             NSLog(@"status %@", status == SFSpeechRecognizerAuthorizationStatusAuthorized ? @"授权成功" : @"授权失败");             dispatch_async(dispatch_get_main_queue(), ^{                 if (status == SFSpeechRecognizerAuthorizationStatusAuthorized) {                     [self startRecording];         //            //block回调方式         //            [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) {         //         //                    if (result.isFinal) {         //                        NSLog(@"is final: %d  result: %@", result.isFinal, result.bestTranscription.formattedString);         //                    }         //            }];                     self.isRecord=YES;                     [self.recordBtn setTitle:@"停止录制" forState:UIControlStateNormal];                     //delegate回调方式                     [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest delegate:self];                 }else{                     UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"没有语音识别权限" preferredStyle:UIAlertControllerStyleAlert];                                           // 2.创建并添加按钮                     UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"暂不授权" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {                       }];                     [alertController addAction:cancelAction];                                           // 2.创建并添加按钮                     UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"去授权" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {                             #ifdef __IPHONE_8_0                             NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];                             if ([[UIApplication sharedApplication]canOpenURL:url]) {                                 [[UIApplication sharedApplication]openURL:url];                             }                             #endif                     }];                     [alertController addAction:okAction];                     [self presentViewController:alertController animated:YES completion:nil];                 }             });           }];     }       }   -(void)speakAction{     [self speakString:self.textView.text]; }       -(void)viewDidAppear:(BOOL)animated{     [super viewDidAppear:animated];           // 请求识别权限info.plist //    <key>NSSpeechRecognitionUsageDescription</key> //    <string>请允许语音识别</string> //    <key>NSMicrophoneUsageDescription</key> //    <string>请允许麦克风</string>                   return;           }   - (void)initEngine {     if (!self.speechRecognizer) {         // 设置语言         NSLocale *locale = [NSLocale localeWithLocaleIdentifier:@"zh-CN"];         self.speechRecognizer = [[SFSpeechRecognizer alloc] initWithLocale:locale];     }     if (!self.audioEngine) {         self.audioEngine = [[AVAudioEngine alloc] init];     }           AVAudioSession *audioSession = [AVAudioSession sharedInstance];     [audioSession setCategory:AVAudioSessionCategoryRecord mode:AVAudioSessionModeMeasurement options:AVAudioSessionCategoryOptionDuckOthers error:nil];     [audioSession setActive:YES withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];           if (self.recognitionRequest) {         [self.recognitionRequest endAudio];         self.recognitionRequest = nil;     }     self.recognitionRequest = [[SFSpeechAudioBufferRecognitionRequest alloc] init];     self.recognitionRequest.shouldReportPartialResults = YES; } - (void)startRecording{     [self initEngine];           AVAudioFormat *recordingFormat = [[self.audioEngine inputNode] outputFormatForBus:0];     [[self.audioEngine inputNode] installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) {         [self.recognitionRequest appendAudioPCMBuffer:buffer];     }];     [self.audioEngine prepare];     [self.audioEngine startAndReturnError:nil];       }   - (void)stopRecording{     [[self.audioEngine inputNode] removeTapOnBus:0];     [self.audioEngine stop];     [self.recognitionRequest endAudio];     self.recognitionRequest = nil; }     -(void)speakString:(NSString *)string{     //避免手机静音合成语音不能播放     NSError *setCategoryErr = nil;     NSError *activationErr = nil;     [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:&setCategoryErr];     //magic is here     [[AVAudioSession sharedInstance] setActive:YES error:&activationErr];           //语音合成       //设置语言类别（ 不能被识别，返回值为nil）     AVSpeechSynthesisVoice *voiceType = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];     AVSpeechUtterance *utterance = [AVSpeechUtterance speechUtteranceWithString:string];     utterance.voice =  voiceType;     utterance.rate *=1.0;//设置语速     utterance.volume =1.0;//设置音量     [self.synthesizer speakUtterance:utterance]; }   #pragma mark  SFSpeechRecognitionTaskDelegate - (void)speechRecognitionTask:(SFSpeechRecognitionTask *)task didFinishRecognition:(SFSpeechRecognitionResult *)recognitionResult{     dispatch_async(dispatch_get_main_queue(), ^{         if (recognitionResult.isFinal) {             NSLog(@"is final: %d  result: %@", recognitionResult.isFinal, recognitionResult.bestTranscription.formattedString);             self.textView.text=recognitionResult.bestTranscription.formattedString;         }else{             self.textView.text=@"识别失败";         }     });   } #pragma mark AVSpeechSynthesizerDelegate -(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didStartSpeechUtterance:(AVSpeechUtterance *)utterance{   NSLog(@"语音合成开始");   }   -(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)utterance{   NSLog(@"语音合成完成");   }   #pragma mark lazyloading /**  @author Vie 2022年06月23日15:11:43  @初始化懒加载alertTipView  @return alertTipView  */ -(AVSpeechSynthesizer *)synthesizer{     if (!_synthesizer) {         //语音合成         // 语音合成器会生成音频         _synthesizer = [[AVSpeechSynthesizer alloc] init];         _synthesizer.delegate=self;     }     return _synthesizer; } @end