iOS开发项目- 基于WebSocket的聊天通讯（2）

@property (readonly, getter=isRecording) BOOL recording;//是否正在录音
@property (readonly) NSDictionary<NSString *, id> *settings;//录音配置
@property (readonly) NSURL *url;//录音文件存放URL
@property (readonly) NSTimeInterval currentTime;//录音时长
@property (getter=isMeteringEnabled) BOOL meteringEnabled;//是否监控声波

- (BOOL)prepareToRecord;//为录音准备缓冲区
- (BOOL)record;//录音开始，暂停后调用会恢复录音
- (BOOL)recordAtTime:(NSTimeInterval)time;//在指定时间后开始录音
- (BOOL)recordForDuration:(NSTimeInterval) duration;//按指定时长录音
- (BOOL)recordAtTime:(NSTimeInterval)time forDuration:(NSTimeInterval)duration;//上面2个的合体
- (void)pause; //中断录音
- (void)stop; //停止录音
- (BOOL)deleteRecording;//删除录音，必须先停止录音再删除

//录音完成后调用
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag;//录音编码发送错误时调用
- (void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError *)error;

#import <AVFoundation/AVFoundation.h>
#define kRecordAudioFile @"myRecord.caf"


@interface ViewController ()<AVAudioRecorderDelegate>
{
  NSString *dateName;

}
@property (weak, nonatomic) IBOutlet UITableView *table;

@property (nonatomic,strong) AVAudioRecorder *audioRecorder;//音频录音机
@property (nonatomic,strong) AVAudioPlayer *audioPlayer;//音频播放器，用于播放录音文件


@property(nonatomic,strong) NSMutableArray *spaceData;


@end

@implementation ViewController
#pragma mark - 私有方法
/**
 * 设置音频会话
 */
-(void)setAudioSession{

  AVAudioSession *audioSession=[AVAudioSession sharedInstance];
  //设置为播放和录音状态，以便可以在录制完之后播放录音
  [audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
  [audioSession setActive:YES error:nil];
}



/**
 * 取得录音文件设置
 *
 * @return 录音设置
 */
-(NSDictionary *)getAudioSetting{
  NSMutableDictionary *dicM=[NSMutableDictionary dictionary];
  //设置录音格式
  [dicM setObject:@(kAudioFormatLinearPCM) forKey:AVFormatIDKey];
  //设置录音采样率，8000是电话采样率，对于一般录音已经够了
  [dicM setObject:@(8000) forKey:AVSampleRateKey];
  //设置通道,这里采用单声道
  [dicM setObject:@(1) forKey:AVNumberOfChannelsKey];
  //每个采样点位数,分为8、16、24、32
  [dicM setObject:@(8) forKey:AVLinearPCMBitDepthKey];
  //是否使用浮点数采样
  [dicM setObject:@(YES) forKey:AVLinearPCMIsFloatKey];
  //....其他设置等
  return dicM;
}
/**
 * 取得录音文件保存路径
 *
 * @return 录音文件路径
 */
-(NSURL *)getPlayPath:(NSString *)title{


  //  static int index = 0;

  NSString *urlStr=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
  urlStr=[urlStr stringByAppendingPathComponent:[NSString stringWithFormat:@"%@%@",title,kRecordAudioFile]];
  NSLog(@"play file path:%@",urlStr);
  NSURL *url=[NSURL fileURLWithPath:urlStr];

  return url;
}

/**
 * 以日期为title，来保存录音
 *
 * @return <#return value description#>
 */
- (NSString *) convertDateFromString
{
  NSDate *date = [NSDate date];
  //  NSLog(@"%@--askl",date);
  //  
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; 
  //zzz表示时区，zzz可以删除，这样返回的日期字符将不包含时区信息。

  [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
  NSString *destDateString = [dateFormatter stringFromDate:date];

  return destDateString;

}

- (void)setClikeSpaceState:(NSString *)aState
{
  NSLog(@"点击语音---");  

  if([aState isEqualToString:@"begin"])
  {
    NSLog(@"begin---");

    dateName = [self convertDateFromString];
    //创建录音文件保存路径
    NSURL *url=[self getPlayPath:dateName];
    //创建录音格式设置
    NSDictionary *setting=[self getAudioSetting];
    //创建录音机
    NSError *error=nil;
    _audioRecorder=[[AVAudioRecorder alloc]initWithURL:url settings:setting error:&error];
    _audioRecorder.delegate=self;
    _audioRecorder.meteringEnabled=YES;//如果要监控声波则必须设置为YES

    if (![self.audioRecorder isRecording]) {
      [self.audioRecorder record];//首次使用应用时如果调用record方法会询问用户是否允许使用麦克风
      //    self.timer.fireDate=[NSDate distantPast];

      NSLog(@"111");
    }


  }else
  {
    NSLog(@"end---");


    /** 停止录音*/
    [self.audioRecorder stop];


    /** 录音地址*/
    NSURL *url = [self getPlayPath:dateName];

    /** 加载数据*/

    AVAudioPlayer  *audioPlayer1 = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];

    Model *model = [[Model alloc]init];
    model.duration = [NSString stringWithFormat:@"%.f",audioPlayer1.duration];
    model.spacePath = dateName;



    /** table 刷新*/
    [self.spaceData addObject:model];
    [self.table reloadData];


    /** table 滚动到当前row*/

    [self.table selectRowAtIndexPath:[NSIndexPath indexPathForRow:(self.spaceData.count - 1) inSection:0] animated:YES scrollPosition:UITableViewScrollPositionTop];






  }
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{


  Model *model = self.spaceData[indexPath.row];  

  /** 播放录音*/
  NSURL *url=[self getPlayPath:model.spacePath];
  NSError *error=nil;
  _audioPlayer=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error];
  _audioPlayer.numberOfLoops=0;

  [_audioPlayer prepareToPlay];
  [self.audioPlayer play];

  NSLog(@"%.0f---aaaa",_audioPlayer.duration);

  /** UIImage动画数组*/
  NSMutableArray  *imgData = [NSMutableArray array];
  for(int i=0;i<4;i++)
  {
    UIImage *aImage = [UIImage imageNamed:[NSString stringWithFormat:@"chat_receiver_audio_playing00%d",i]];
    [imgData addObject:aImage];

  }

  TwoTableViewCell *twoCell = [self.table cellForRowAtIndexPath:indexPath];




  /** 点击动画*/

  [twoCell.speak setAnimationImages:imgData];
  //    [twoCell.speak setAnimationRepeatCount:1];
  [twoCell.speak setAnimationDuration:1];
  [twoCell.speak startAnimating];

  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)([model.duration intValue] * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

    [twoCell.speak stopAnimating];

  });

}