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#import <UIKit/UIKit.h>#import <AVFoundation/AVFoundation.h>#import <QuartzCore/QuartzCore.h> @interface
RootViewController : UIViewController<AVAudioRecorderDelegate,UIAlertViewDelegate>{ AVAudioRecorder *recoder; NSURLConnection
*urlConnection; NSMutableData
*receiveData; NSTimer
*timer; NSTimeInterval
bInterval; UIAlertView *wAlertView;} @end //// RootViewController.m// asr//// Created by cat on 14-3-20.// Copyright (c) 2014年 cat. All rights reserved.// #import "RootViewController.h" @interfaceRootViewController
() @end @implementation
RootViewController - (void)viewDidLoad{ [superviewDidLoad];// Do any additional setup after loading the view.} - (void)didReceiveMemoryWarning{ [superdidReceiveMemoryWarning]; // Dispose of any resources that can be recreated.} - (void)dealloc{ if(recoder) { [recoder stop]; [recoder release]; } [urlConnectionrelease]; [super
dealloc];} - (void)loadView{ [super
loadView]; NSString
*str[] = {@"Record", @"Play"}; float
y = 64.0f; for(int
i = 0;i < sizeof(str) / sizeof(str[0]); i++) { UIButton *button = [UIButtonbuttonWithType:UIButtonTypeRoundedRect]; button.frame = CGRectMake(160.0f - 40.0f, y, 80.0f, 80.0f); button.tag = 100 + i; button.layer.masksToBounds = YES; button.layer.cornerRadius = 40.0f; button.layer.borderColor = [[UIColor redColor] CGColor]; [button setTitle:str[i] forState:UIControlStateNormal]; if(i != 0) [button addTarget:selfaction:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:button]; if(i == 0) { UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self
action:@selector(longPress:)]; [button addGestureRecognizer:gestureRecognizer]; [gestureRecognizer release]; } y += button.bounds.size.width + 40.0f; } receiveData = [[NSMutableData
alloc] init]; [[AVAudioSessionsharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecorderror: nil];} - (void)longPress:(UILongPressGestureRecognizer *)gestureRecognizer{ if([gestureRecognizer state] == UIGestureRecognizerStateBegan) { [self
record]; } elseif([gestureRecognizer state] == UIGestureRecognizerStateEnded) { [selfparseStringFromWav]; }} - (void)parseStringFromWav{ wAlertView = [[UIAlertViewalloc] initWithTitle:@"Please Wait"message:nildelegate:selfcancelButtonTitle:nilotherButtonTitles:nil]; [wAlertViewshow]; UIActivityIndicatorView *aiv = [[UIActivityIndicatorViewalloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; aiv.center = CGPointMake(wAlertView.bounds.size.width / 2.0f, wAlertView.bounds.size.height - 40.0f); [aiv startAnimating]; [wAlertView addSubview:aiv]; [aiv release]; [wAlertViewrelease]; if(recoder) { [recoder stop]; } if(timer) { [timer invalidate]; timer = nil; } NSURL
*url = [NSURLURLWithString:@"http://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=zh"]; //Create the request NSMutableURLRequest
*request = [[[NSMutableURLRequestalloc] init] autorelease]; //头部设置 NSDictionary
*headField = [NSDictionarydictionaryWithObjectsAndKeys:@"audio/L16; rate=16000",@"Content-Type", nil]; [request setAllHTTPHeaderFields:headField]; //要post的网址 [request setURL:url]; [request setHTTPMethod:@"POST"]; [request setHTTPBody:[NSDatadataWithContentsOfFile:[selfrecordTmpPath]]]; if(urlConnection) { [urlConnectioncancel]; [urlConnectionrelease]; urlConnection = nil; } urlConnection = [[NSURLConnectionalloc] initWithRequest:request delegate:selfstartImmediately:YES]; [urlConnectionstart];} - (void)buttonPressed:(UIButton *)sender{ if(sender.tag == 101) { NSError
*error; NSURL
*url = [NSURL
fileURLWithPath:[self
recordTmpPath]]; AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; if(!audioPlayer) { NSLog(@">>>>>>>>>>audioplayer cant not init"); return; } if(![audioPlayer prepareToPlay]) { NSLog(@">>>>>>>>>>not prepareToPlay"); return; } if(![audioPlayer play]) { NSLog(@">>>>>>>>>>not play"); } }} - (NSString
*)recordTmpPath{ return
[NSTemporaryDirectory() stringByAppendingFormat:@"voice.wav"];} - (BOOL)record{ NSError
*error; NSMutableDictionary
*settings = [NSMutableDictionarydictionary]; [settings setValue:[NSNumbernumberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey]; [settings setValue:[NSNumbernumberWithFloat:16000] forKey:AVSampleRateKey]; [settings setValue:[NSNumbernumberWithInt:1] forKey:AVNumberOfChannelsKey]; [settings setValue:[NSNumbernumberWithInt:AVAudioQualityHigh] forKey:AVEncoderAudioQualityKey]; NSLog(@">>>>>>>>>>path %@", [selfrecordTmpPath]); NSURL
*url = [NSURL
fileURLWithPath:[self
recordTmpPath]]; if(recoder) { [recoder release]; recoder = nil; } recoder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error]; if(!recoder) { NSLog(@">>>>>>Error %@", [error localizedDescription]); return
NO; } recoder.delegate = self; if(![recoderprepareToRecord]) { [selfshowAlert:@"Error while preparing recording..."]; return
NO; } if(![recoder record]) { [selfshowAlert:@"Error while attempting to record audio..."]; return
NO; } if(timer) { [timer invalidate]; timer = nil; } bInterval = [[NSDatedate] timeIntervalSince1970]; timer = [NSTimerscheduledTimerWithTimeInterval:1.0ftarget:selfselector:@selector(update) userInfo:nilrepeats:YES]; returnYES;} - (void)update{ int
sec = [[NSDatedate] timeIntervalSince1970] - bInterval; self.title = [NSString
stringWithFormat:@"%ds", sec];} - (void)viewWillDisappear:(BOOL)animated{ if(timer) { [timer invalidate]; timer = nil; }} - (void)updateMeters{ [recoderupdateMeters]; float
peakPowerForChannel = pow(10, 0.05 * [recoder peakPowerForChannel:0]); float
averagePowerForChannel = pow(10, 0.05*[recoder averagePowerForChannel:0]); NSLog(@"Average input: %f Peak input: %f", peakPowerForChannel,averagePowerForChannel);} - (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{ NSLog(@">>>>>>>>>>audioRecorderDidFinishRecording");} /* if an error occurs while encoding it will be reported to the delegate. */- (void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError
*)error{ NSLog(@">>>>>>>>>>audioRecorderEncodeErrorDidOccur %@", [error localizedDescription]);} - (void)showAlert:(NSString
*)aMessage{ UIAlertView *alertView = [[UIAlertViewalloc] initWithTitle:@"提示"message:aMessage delegate:nilcancelButtonTitle:@"确定"otherButtonTitles:nil]; [alertView show]; [alertView release];} #pragma mark -#pragma mark NSURLConnection delegate Methods- (void)connection:(NSURLConnection
*)connection didReceiveResponse:(NSURLResponse
*)response{ [receiveDatasetLength:0];} - (void)connection:(NSURLConnection
*)connection didReceiveData:(NSData
*)data{ if(data) [receiveData appendData:data];} - (void)connectionDidFinishLoading:(NSURLConnection
*)connection{ NSLog(@">>>>>>>>>>connectionDidFinishLoading"); [wAlertViewdismissWithClickedButtonIndex:0animated:NO]; NSString
*result = [[[NSStringalloc] initWithData:receiveDataencoding:NSUTF8StringEncoding] autorelease]; [self
showAlert:result];} - (void)connection:(NSURLConnection
*)connection didFailWithError:(NSError
*)error{ NSLog(@">>>>>>>>>>didFailWithError %@",[error localizedDescription]); [wAlertViewdismissWithClickedButtonIndex:0animated:YES];} @end |
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原文：http://www.cnblogs.com/gcat/p/3747642.html