要开发语音识别，首先要获取系统权限
捕获.PNG
通过requestAuthorization来获取权限
#import <Speech/Speech.h>
//1.创建要识别的语音
NSLocale *local =[[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"];
//2.初始化语音识别对象
SFSpeechRecognizer *sfr =[[SFSpeechRecognizer alloc] initWithLocale:local];
//3.加载资源文件或者通过录音的方式来
NSURL *url =[[NSBundle mainBundle] URLForResource:@"*.mp3" withExtension:nil];
//4.将资源包中获取的url(录音文件的地址)传递给 request对象
SFSpeechURLRecognitionRequest *res =[[SFSpeechURLRecognitionRequest alloc] initWithURL:url];
//5.发送一个请求
[sfr recognitionTaskWithRequest:res resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) {
if (error!=nil) {
NSLog(@"语音识别失败啦,%@",error);
}
else
{
//解析正确
NSLog(@"---%@",result.bestTranscription.formattedString);
}
}];
也可通过代理方法来识别是否成功
//当开始检测音频源中的语音时首先调用此方法
-(void)speechRecognitionDidDetectSpeech:(SFSpeechRecognitionTask *)task;
//当识别出一条可用的信息后 会调用(void)speechRecognitionTask:(SFSpeechRecognitionTask *)task didHypothesizeTranscription:(SFTranscription *)transcription;
//识别完成
- (void)speechRecognitionTask:(SFSpeechRecognitionTask *)task didFinishRecognition:(SFSpeechRecognitionResult *)recognitionResult;
//开始处理语音，不再接受输入
(void)speechRecognitionTaskFinishedReadingAudio:(SFSpeechRecognitionTask *)task
//取消
(void)speechRecognitionTaskWasCancelled:(SFSpeechRecognitionTask *)task;
//语音识别任务完成时被调用
- (void)speechRecognitionTask:(SFSpeechRecognitionTask *)task didFinishSuccessfully:(BOOL)successfully;
