iOS - 简单录音：
AVFoundation框架
//
// AVDIOViewController.m
// AVDIO
//
// Created by ifziv on 13-10-16.
// Copyright (c) 2013年 iChano. All rights reserved.
//
#import "AVDIOViewController.h"
#import <AVFoundation/AVFoundation.h>
@interface AVDIOViewController ()
{
UILabel *label;
AVAudioRecorder *recorder; //专门进行录制的类
AVAudioPlayer *player; //播放
}
@property(nonatomic, retain)AVAudioRecorder *recorder;
@property(nonatomic, retain)AVAudioPlayer *player;
@end
@implementation AVDIOViewController
@synthesize recorder,player;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
self.view.backgroundColor = [UIColor grayColor];
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)loadView
{
[super loadView];
UIButton *startButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
startButton.frame = CGRectMake(100, 100, 100, 40);
[startButton setTitle:@"开始录制" forState:UIControlStateNormal];
[startButton addTarget:self action:@selector(startAvdio) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:startButton];
UIButton *stopButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
stopButton.frame = CGRectMake(100, 160, 100, 40);
[stopButton setTitle:@"停止录制" forState:UIControlStateNormal];
[stopButton addTarget:self action:@selector(stopAvdio) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:stopButton];
UIButton *playButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
playButton.frame = CGRectMake(100, 220, 100, 40);
[playButton setTitle:@"播放录音" forState:UIControlStateNormal];
[playButton addTarget:self action:@selector(playAvdio) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:playButton];
}
-(void)startAvdio
{
//录制状态
if (recorder.isRecording) {
[recorder stop];
}
//播放状态
if (player.isPlaying) {
[player stop];
}
NSError *error = nil;
//设置录制信息
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryRecord error:&error];
[[AVAudioSession sharedInstance] setActive:YES error:&error];
//设置采样的详细数据
NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
// [dic setValue:[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey]; //PCM格式
[dic setValue:[NSNumber numberWithInt:kAudioFormatMPEGLayer3] forKey:AVFormatIDKey]; //PCM格式
[dic setValue:[NSNumber numberWithFloat:44100.0f] forKey:AVSampleRateKey]; //采样率
[dic setValue:[NSNumber numberWithInt:1] forKey:AVNumberOfChannelsKey]; //通道数目
[dic setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey]; //采样位数，默认16.
[dic setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey]; //是大端口还是小端口还是内存的组织方式
[dic setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey]; //采样信号是整数还是浮点数
//定义路径，设置保存的位置。
// NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"documents"];
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *savePath = [NSString stringWithFormat:@"%@/test.aif", path]; // kAudioFormatLinearPCM == .aif .caf .mav .wav 。kAudioFormatMPEG4AAC == .m4a .acc 。 kAudioFormatMPEGLayer3 == .aif
NSLog(@"savePath!: %@", savePath);
//录制文件路径
NSURL *fileURL = [NSURL fileURLWithPath:savePath];
//初始化录制信息信息，进行录制。
recorder = [[AVAudioRecorder alloc] initWithURL:fileURL settings:dic error:&error];
[recorder record];
NSLog(@"avdio error!: %@", error);
NSLog(@"已开始录制..");
}
-(void)stopAvdio
{
if (recorder.isRecording) {
[recorder stop];
}
if (player.isPlaying) {
[player stop];
}
NSLog(@"已停止录制..");
}
-(void)playAvdio
{
NSError *error = nil;
//获取到路径
// NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"documents"];
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *savePath = [NSString stringWithFormat:@"%@/test.aif", path]; // kAudioFormatLinearPCM == .aif .caf .mav .wav 。kAudioFormatMPEG4AAC == .m4a .acc 。 kAudioFormatMPEGLayer3 == .aif
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:savePath];
//进行设定后台播放和激活状态
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&error];
[[AVAudioSession sharedInstance] setActive:YES error:&error];
//使用播放器进行播放
player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:&error];
[player play];
NSLog(@"play error!: %@", error);
}
@end