IOS开发学习笔记（二）－语音识别（科大讯飞）

 1 #import <UIKit/UIKit.h>
 2 #import "iflyMSC/IFlySpeechRecognizerDelegate.h"
 3 //引入语音识别类
 4 @class IFlyDataUploader;
 5 @class IFlySpeechUnderstander;
 6 //注意要添加语音识别代理
 7 @interface MainViewController : UIViewController<IFlySpeechRecognizerDelegate>
 8 @property (nonatomic,strong) IFlySpeechUnderstander *iFlySpeechUnderstander;
 9 @property (strong, nonatomic) IBOutlet UITextField *content;
10 @property (nonatomic,strong) NSString               *result;
11 @property (nonatomic,strong) NSString               *str_result;
12 @property (nonatomic)         BOOL                  isCanceled;
13 
14 - (IBAction)understand:(id)sender;
15 - (IBAction)finish:(id)sender;
16 
17 @end

  1 #import "MainViewController.h"
  2 #import <QuartzCore/QuartzCore.h>
  3 #import <AVFoundation/AVAudioSession.h>
  4 #import <AudioToolbox/AudioSession.h>
  5 
  6 #import "iflyMSC/IFlyContact.h"
  7 #import "iflyMSC/IFlyDataUploader.h"
  8 #import "iflyMSC/IFlyUserWords.h"
  9 #import "iflyMSC/IFlySpeechUtility.h"
 10 #import "iflyMSC/IFlySpeechUnderstander.h"
 11 
 12 @interface MainViewController ()
 13 
 14 @end
 15 
 16 @implementation MainViewController
 17 
 18 - (void)viewDidLoad
 19 {
 20     [super viewDidLoad];
 21     //创建识别对象
 22     //创建语音配置
 23     NSString *initString = [[NSString alloc] initWithFormat:@"appid=%@,timeout=%@",@"53b5560a",@"20000"];   
 24     
 25     //所有服务启动前，需要确保执行createUtility
 26     [IFlySpeechUtility createUtility:initString];
 27     _iFlySpeechUnderstander = [IFlySpeechUnderstander sharedInstance];
 28     _iFlySpeechUnderstander.delegate = self;
 29 }
 30 
 31 -(void)viewWillDisappear:(BOOL)animated
 32 {
 33     [_iFlySpeechUnderstander cancel];
 34     _iFlySpeechUnderstander.delegate = nil;
 35     //设置回非语义识别
 36     [_iFlySpeechUnderstander destroy];
 37     [super viewWillDisappear:animated];
 38 }
 39 
 40 - (void)didReceiveMemoryWarning
 41 {
 42     [super didReceiveMemoryWarning];
 43 }
 44 
 45 - (IBAction)understand:(id)sender {
 46     bool ret = [_iFlySpeechUnderstander startListening];  //开始监听
 47     if (ret) {
 48         self.isCanceled = NO;
 49     }
 50     else{
 51         NSLog(@"启动识别失败!");
 52     }  
 53 }
 54 
 55 - (IBAction)finish:(id)sender {
 56     [_iFlySpeechUnderstander stopListening];   //结束监听，并开始识别
 57 }
 58 
 59 #pragma mark - IFlySpeechRecognizerDelegate
 60 /**
 61  * @fn      onVolumeChanged
 62  * @brief   音量变化回调
 63  * @param   volume      -[in] 录音的音量，音量范围1~100
 64  * @see
 65  */
 66 - (void) onVolumeChanged: (int)volume
 67 {
 68     
 69 }
 70 
 71 /**
 72  * @fn      onBeginOfSpeech
 73  * @brief   开始识别回调
 74  * @see
 75  */
 76 - (void) onBeginOfSpeech
 77 {
 78    
 79 }
 80 
 81 /**
 82  * @fn      onEndOfSpeech
 83  * @brief   停止录音回调
 84  * @see
 85  */
 86 - (void) onEndOfSpeech
 87 {
 88    
 89 }
 90 
 91 /**
 92  * @fn      onError
 93  * @brief   识别结束回调
 94  * @param   errorCode   -[out] 错误类，具体用法见IFlySpeechError
 95  */
 96 - (void) onError:(IFlySpeechError *) error
 97 {
 98     NSString *text ;
 99     if (self.isCanceled) {
100         text = @"识别取消";
101     }
102     else if (error.errorCode ==0 ) {
103         if (_result.length==0) {
104             text = @"无识别结果";
105         }
106         else{
107             text = @"识别成功";
108         }
109     }
110     else{
111         text = [NSString stringWithFormat:@"发生错误：%d %@",error.errorCode,error.errorDesc];
112         NSLog(@"%@",text);
113     }
114 }
115 
116 /**
117  * @fn      onResults
118  * @brief   识别结果回调
119  * @param   result      -[out] 识别结果，NSArray的第一个元素为NSDictionary，NSDictionary的key为识别结果，value为置信度
120  * @see
121  */
122 - (void) onResults:(NSArray *) results isLast:(BOOL)isLast
123 {
124     NSArray * temp = [[NSArray alloc]init];
125     NSString * str = [[NSString alloc]init];
126     NSMutableString *result = [[NSMutableString alloc] init];
127     NSDictionary *dic = results[0];
128     for (NSString *key in dic) {
129         [result appendFormat:@"%@",key];
130         
131     }
132     NSLog(@"听写结果：%@",result);
133     //---------讯飞语音识别JSON数据解析---------//
134     NSError * error;
135     NSData * data = [result dataUsingEncoding:NSUTF8StringEncoding];
136     NSLog(@"data: %@",data);
137     NSDictionary * dic_result =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&error];
138     NSArray * array_ws = [dic_result objectForKey:@"ws"];
139     //遍历识别结果的每一个单词
140     for (int i=0; i<array_ws.count; i++) {
141         temp = [[array_ws objectAtIndex:i] objectForKey:@"cw"];
142         NSDictionary * dic_cw = [temp objectAtIndex:0];
143         str = [str  stringByAppendingString:[dic_cw objectForKey:@"w"]];
144         NSLog(@"识别结果:%@",[dic_cw objectForKey:@"w"]);
145     }
146     NSLog(@"最终的识别结果:%@",str);
147     //去掉识别结果最后的标点符号
148     if ([str isEqualToString:@"。"] || [str isEqualToString:@"？"] || [str isEqualToString:@"！"]) {
149         NSLog(@"末尾标点符号：%@",str);
150     }
151     else{
152         self.content.text = str;
153     }
154     _result = str;
155 }
156 
157 @end

{"sn":1,"ls":true,"bg":0,"ed":0,"ws":[{"bg":0,"cw":[{"w":" 今天 ","sc":0}]},{"bg":0,"cw":[{"w":" 的
","sc":0}]},{"bg":0,"cw":[{"w":" 天气 ","sc":0}]},{"bg":0,"cw":[{"w":" 怎么
样 ","sc":0}]},{"bg":0,"cw":[{"w":" 。","sc":0}]}]}