1設(shè)置權(quán)限
Privacy - Microphone Usage Description? ? ? microphoneDesciption
2引入框架AVFoundation
3.m
#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>
@interface ViewController ()<AVAudioRecorderDelegate>
{//錄音
AVAudioRecorder *audioRecorder;
//聲音播放
AVAudioPlayer *player;
//拖動(dòng)條
UISlider *processSlider;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(100, 100, 100, 100);
[button setTitle:@"錄音/停止" forState:UIControlStateNormal];
button.backgroundColor = [UIColor brownColor];
[button addTarget:self action:@selector(startAudioRecoder:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
UIButton *buttonTwo = [UIButton buttonWithType:UIButtonTypeCustom];
buttonTwo.frame = CGRectMake(100, 300, 100, 100);
[buttonTwo setTitle:@"播放" forState:UIControlStateNormal];
buttonTwo.backgroundColor = [UIColor redColor];
[buttonTwo addTarget:self action:@selector(startPlayer:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonTwo];
UIButton *buttonTwo1 = [UIButton buttonWithType:UIButtonTypeCustom];
buttonTwo1.frame = CGRectMake(250, 300, 100, 100);
[buttonTwo1 setTitle:@"停止" forState:UIControlStateNormal];
buttonTwo1.backgroundColor = [UIColor redColor];
[buttonTwo1 addTarget:self action:@selector(startPlayer1:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonTwo1];
//拖動(dòng)條
processSlider = [[UISlider alloc] initWithFrame:CGRectMake(90, 220, 200, 20)];
[processSlider addTarget:self action:@selector(processChanged) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:processSlider];
//定時(shí)器
[NSTimer scheduledTimerWithTimeInterval:0.001 target:self selector:@selector(updateSliderValue) userInfo:nil repeats:YES];
}
//拖動(dòng)條方法
-(void)processChanged
{
[player setCurrentTime:processSlider.value*player.duration];
}
//定時(shí)器方法
-(void)updateSliderValue
{
processSlider.value = player.currentTime/player.duration;
}
//錄音 和 停止
- (void)startAudioRecoder:(UIButton *)sender{
sender.selected = !sender.selected;
if (sender.selected != YES) {
[audioRecorder stop];
return;
}
//? URL是本地的URL AVAudioRecorder需要一個(gè)存儲(chǔ)的路徑
//? URL是本地的URL AVAudioRecorder需要一個(gè)存儲(chǔ)的路徑
NSString *name = @"tcdsgzg.aiff";
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:name];
//? ? NSLog(@"%@",path);
NSError *error;
//? 錄音機(jī) 初始化
audioRecorder = [[AVAudioRecorder alloc]initWithURL:[NSURL fileURLWithPath:path] settings:@{AVNumberOfChannelsKey:@2,AVSampleRateKey:@44100,AVLinearPCMBitDepthKey:@32,AVEncoderAudioQualityKey:@(AVAudioQualityMax),AVEncoderBitRateKey:@128000} error:&error];
[audioRecorder prepareToRecord];
[audioRecorder record];
audioRecorder.delegate = self;
/*
1.AVNumberOfChannelsKey 通道數(shù) 通常為雙聲道 值2
2.AVSampleRateKey 采樣率 單位HZ 通常設(shè)置成44100 也就是44.1k
3.AVLinearPCMBitDepthKey 比特率 8 16 24 32
4.AVEncoderAudioQualityKey 聲音質(zhì)量
① AVAudioQualityMin? = 0, 最小的質(zhì)量
② AVAudioQualityLow? = 0x20, 比較低的質(zhì)量
③ AVAudioQualityMedium = 0x40, 中間的質(zhì)量
④ AVAudioQualityHigh? = 0x60,高的質(zhì)量
⑤ AVAudioQualityMax? = 0x7F 最好的質(zhì)量
5.AVEncoderBitRateKey 音頻編碼的比特率 單位Kbps 傳輸?shù)乃俾?一般設(shè)置128000 也就是128kbps
*/
//? ? NSLog(@"%@",path);
}
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{
NSLog(@"錄音結(jié)束");
//? 文件操作的類
NSFileManager *manger = [NSFileManager defaultManager];
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
//? 獲得當(dāng)前文件的所有子文件subpathsAtPath
NSArray *pathlList = [manger subpathsAtPath:path];
//? 需要只獲得錄音文件
NSMutableArray *audioPathList = [NSMutableArray array];
//? 遍歷所有這個(gè)文件夾下的子文件
for (NSString *audioPath in pathlList) {
//? ? 通過對(duì)比文件的延展名（擴(kuò)展名 尾綴） 來區(qū)分是不是錄音文件
if ([audioPath.pathExtension isEqualToString:@"aiff"]) {
//? ? ? 把篩選出來的文件放到數(shù)組中
[audioPathList addObject:audioPath];
}
}
NSLog(@"%@",audioPathList);
}
-(void)startPlayer:(UIButton *)btn{
NSString *name = @"tcdsgzg.aiff";
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:name];
NSData *data = [[NSData data]initWithContentsOfFile:path];
player = [[AVAudioPlayer alloc]initWithData:data error:nil];
//設(shè)置是否可以倍速（或者放慢速度）播放
player.enableRate = YES;
//設(shè)置播放速度 一般0.5-2.0
player.rate = 0.5;
[player play];
}
-(void)startPlayer1:(UIButton *)btn{
[player pause];
}
@end
