@implementation FKViewController
AVAudioRecorder* audioRecorder;
UIImage* recordImage;
UIImage* stopImage;
AVAudioPlayer* audioPlayer;
- (void)viewDidLoad
{
[super viewDidLoad];
recordImage = [UIImage imageNamed:@"record.png"];
stopImage = [UIImage imageNamed:@"stop.png"];
[self.recordBn setImage:recordImage forState:UIControlStateNormal];
// 获取当前应用的音频会话 // AVAudioSession * audioSession = [AVAudioSession sharedInstance];
// // 设置音频类别，PlayAndRecord——这说明当前音频会话即可播放、也可录制
// [audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error: nil];
// // 激活当前应用的音频会话
// [audioSession setActive:YES error: nil];
}
//获取document目录的路径
- (NSString*) documentsPath {
if (! _documentsPath) {
NSArray *searchPaths =
NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
_documentsPath = [searchPaths objectAtIndex: 0];
}
return _documentsPath;
}
- (IBAction)clicked:(id)sender
{
if(audioRecorder != nil && audioRecorder.isRecording)
{
[audioRecorder stop];
[self.recordBn setImage:recordImage forState:UIControlStateNormal];
}
else
{
#pragma mark - 下面设置录音的参数和录音文件的保存路径等信息
// 获取音频文件的保存路径
NSString *destinationString = [[self documentsPath]
stringByAppendingPathComponent:@"sound.wav"];
NSURL *destinationURL = [NSURL fileURLWithPath:destinationString];
// 创建一个NSDictionary，用于保存录制属性
NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] init];
// 设置录制音频的格式
[recordSettings setObject:[NSNumber numberWithInt:kAudioFormatLinearPCM]
forKey: AVFormatIDKey];
NSString* sampleRate = [self.sampleRateSeg titleForSegmentAtIndex:
self.sampleRateSeg.selectedSegmentIndex];
// 设置录制音频的采样率
[recordSettings setObject:[NSNumber numberWithFloat:
sampleRate.floatValue] forKey: AVSampleRateKey];
// 设置录制音频的通道数
[recordSettings setObject:
[NSNumber numberWithInt:(self.stereoSwitch.on ? 2 : 1)]
forKey:AVNumberOfChannelsKey];
NSString* bitDepth = [self.bitDeptSeg titleForSegmentAtIndex:
self.bitDeptSeg.selectedSegmentIndex];
// 设置录制音频的每个样点的位数
[recordSettings setObject: [NSNumber numberWithInt:bitDepth.integerValue]
forKey:AVLinearPCMBitDepthKey];
// 设置录制音频采用高位优先的记录格式
[recordSettings setObject:[NSNumber numberWithBool:YES]
forKey:AVLinearPCMIsBigEndianKey];
// 设置采样信号采用浮点数
[recordSettings setObject:[NSNumber numberWithBool:YES]
forKey:AVLinearPCMIsFloatKey];
NSError *recorderSetupError = nil;
#pragma mark- 到这里开始实例化录音对象
// 初始化AVAudioRecorder
audioRecorder = [[AVAudioRecorder alloc] initWithURL:destinationURL
settings:recordSettings error:&recorderSetupError];
audioRecorder.delegate = self;
[audioRecorder record];
//设置单个按钮的状态为停止录音
[self.recordBn setImage:stopImage forState:UIControlStateNormal];
}
}
#pragma mark - 回放刚才录制的音频文件
- (IBAction)play:(id)sender
{
// 获取音频文件的保存路径
NSString *destinationString = [[self documentsPath]
stringByAppendingPathComponent:@"sound.wav"];
NSURL *url = [NSURL fileURLWithPath:destinationString];
// 创建AVAudioPlayer对象
audioPlayer = [[AVAudioPlayer alloc]
initWithContentsOfURL:url error: nil];
// 开始播放
[audioPlayer play];
}
#pragma mark- 录制音频的代理方法
- (void)audioRecorderBeginInterruption:(AVAudioRecorder *)recorder
{
NSLog(@"被中断！");
}
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)aRecorder
successfully:(BOOL)flag
{
if(flag)
{
NSLog(@"录制完成！！");
}
}
