ios錄音功能實現
阿新 • • 發佈：2019-01-07
實現功能主要為：按下按鈕開始錄音，時間條開始計時，鬆開停止錄音，時間條停止計時，滑開手指放棄錄音。保存錄音檔案到本地document檔案中。
一、匯入標頭檔案和代理
#import <AVFoundation/AVFoundation.h><AVAudioRecorderDelegate>二、在.h檔案中宣告
{
MBProgressHUD *HUD;
UILabel *noticeLabel;//提示標籤
}
@property (nonatomic,strong) UIView *recordView;//錄音介面
@property 三、正文
在.m檔案中新增
#define margin 15
#define kSandboxPathStr [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
#define kCafFileName @"myRecord.caf"
/**
*存放所有的音樂播放器
*/
static NSMutableDictionary *_musices;//頁面佈局
- (void)setupView
{
CGFloat //點選關閉頁面按鈕
- (void)closeBtnClick
{
[self removeFromSuperview];
}#pragma mark - 錄音方法
//改變錄音時間
- (void)changeRecordTime
{
self.countNum += 1;
NSInteger min = self.countNum/60;
NSInteger sec = self.countNum - min * 60;
// NSInteger sec = self.countNum;
self.timeLabel.text = [NSString stringWithFormat:@"%02ld:%02ld",(long)min,(long)sec];
if (sec == 59) {
[self stopRecordNotice];
}
}
- (void)startRecordNotice{
self.timeLabel2.text = @"";
[self stopMusicWithUrl:[NSURL URLWithString:self.cafPathStr]];
if ([self.audioRecorder isRecording]) {
[self.audioRecorder stop];
}
// NSLog(@"----------開始錄音----------");
[self deleteOldRecordFile];
// 如果不刪掉，會在原檔案基礎上錄製；雖然不會播放原來的聲音，但是音訊長度會是錄製的最大長度。
AVAudioSession *audioSession=[AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
if (![self.audioRecorder isRecording]){
// {0--停止、暫停，1-錄製中
[self.audioRecorder record];
// 首次使用應用時如果呼叫record方法會詢問使用者是否允許使用麥克風
self.countNum = 0;
NSTimeInterval timeInterval =1 ;
// 0.1s
self.timer1 = [NSTimer scheduledTimerWithTimeInterval:timeInterval target:self selector:@selector(changeRecordTime) userInfo:nil repeats:YES];
[self.timer1 fire];
}
noticeLabel.text = @"脫離按鈕，鬆開手指放棄錄音";
}
- (void)stopRecordNotice
{
// NSLog(@"----------結束錄音----------");
[self.audioRecorder stop];
[self.timer1 invalidate];
// 計算檔案大小
long long fileSize = [self fileSizeAtPath:self.mp3PathStr]/1024.0;
NSString *fileSizeStr = [NSString stringWithFormat:@"%lld",fileSize];
self.timeLabel2.text = [NSString stringWithFormat:@"%ld \" %@kb ",(long)self.countNum,fileSizeStr];
self.timeLabel.text = @"01:00";
[self.delegate getRecordData:self.mp3PathStr type:@"2" fileName:kMp3FileName];
[self removeFromSuperview];
}
- (void)cancelRecordNotice
{
// NSLog(@"----------取消錄音----------");
[self.audioRecorder stop];
[self.timer1 invalidate];
// 計算檔案大小
long long fileSize = [self fileSizeAtPath:self.mp3PathStr]/1024.0;
NSString *fileSizeStr = [NSString stringWithFormat:@"%lld",fileSize];
self.timeLabel2.text = [NSString stringWithFormat:@"%ld \" %@kb ",(long)self.countNum,fileSizeStr];
self.timeLabel.text = @"00:00";
noticeLabel.text = @"按住不放錄製語音";
}//刪除舊錄音快取
-(void)deleteOldRecordFile{
NSFileManager* fileManager=[NSFileManager defaultManager];
BOOL blHave=[[NSFileManager defaultManager] fileExistsAtPath:self.cafPathStr];
if (!blHave) {
// NSLog(@"不存在");
return ;
}else {
// NSLog(@"存在");
BOOL blDele= [fileManager removeItemAtPath:self.cafPathStr error:nil];
if (blDele) {
// NSLog(@"刪除成功");
}else {
// NSLog(@"刪除失敗");
}
}
}#pragma mark - Getter
/**
* 獲得錄音機物件
*
* @return 錄音機物件
*/
-(AVAudioRecorder *)audioRecorder{
if (!_audioRecorder) {
//建立錄音檔案儲存路徑
NSURL *url=[NSURL URLWithString:self.cafPathStr];
//建立錄音格式設定
NSDictionary *setting=[self getAudioSetting];
//建立錄音機
NSError *error=nil;
_audioRecorder=[[AVAudioRecorder alloc]initWithURL:url settings:setting error:&error];
_audioRecorder.delegate=self;
_audioRecorder.meteringEnabled=YES;//如果要監控聲波則必須設定為YES
if (error) {
NSLog(@"建立錄音機物件時發生錯誤，錯誤資訊：%@",error.localizedDescription);
return nil;
}
}
return _audioRecorder;
}
/**
* 取得錄音檔案設定
*
* @return 錄音設定
*/
-(NSDictionary *)getAudioSetting{
//LinearPCM 是iOS的一種無損編碼格式,但是體積較為龐大
//錄音設定
NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] init];
//錄音格式 無法使用
[recordSettings setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey: AVFormatIDKey];
//取樣率
[recordSettings setValue :[NSNumber numberWithFloat:11025.0] forKey: AVSampleRateKey];//44100.0
//通道數
[recordSettings setValue :[NSNumber numberWithInt:2] forKey: AVNumberOfChannelsKey];
//線性取樣位數
//[recordSettings setValue :[NSNumber numberWithInt:16] forKey: AVLinearPCMBitDepthKey];
//音訊質量,取樣質量
[recordSettings setValue:[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
return recordSettings;
}
/**
*停止播放音樂檔案
*/
- (void)stopMusicWithUrl:(NSURL *)fileUrl{
if (!fileUrl) return;//如果沒有傳入檔名，那麼就直接返回
//1.取出對應的播放器
AVAudioPlayer *player=[self musices][fileUrl];
//2.停止
if ([player isPlaying]) {
[player stop];
// NSLog(@"播放結束:%@--------",fileUrl);
}
if ([[self musices].allKeys containsObject:fileUrl]) {
[[self musices] removeObjectForKey:fileUrl];
}
}//單個檔案的大小
- (long long) fileSizeAtPath:(NSString*)filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath]){
return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}else{
NSLog(@"計算檔案大小：檔案不存在");
}
return 0;
}