最近手上活不多，闲下来写了些小demo，总结一些出来。供大家参考。
首先，当然要引入#import<AVFoundation/AVFoundation.h>
利用此框架中的
AVAudioRecorder和AVAudioPlayer来录音和播放以下是AVAudioRecorder录音的使用方法：
- (IBAction)downAction:(id)sender{
按下录音
if([selfcanRecord]) {
NSError *error =nil;
必须真机上测试,模拟器上可能会崩溃
recorder = [[AVAudioRecorder alloc] initWithURL:[NSURL
URLWithString:playName] settings:recorderSettingsDict error:&error];
if(recorder) {
是否允许刷新电平表，默认是off
recorder.meteringEnabled =YES;
创建文件，并准备录音
[recorder prepareToRecord];
开始录音
[recorder record];
启动定时器,为了更新电平
timer = [NSTimer scheduledTimerWithTimeInterval:0.1target:selfselector:@selector(levelTimer:) userInfo:nilrepeats:YES];
}else
{
interrorCode =CFSwapInt32HostToBig ([error code]);
NSLog(@"Error: %@
[%4.4s])", [error localizedDescription], (char*)&errorCode);
}}}
- (IBAction)upAction:(id)sender{
松开 结束录音
录音停止
[recorder stop];
recorder =nil;
结束定时器
[timer
invalidate];
timer =nil;
图片重置
soundLodingImageView.image = [UIImage imageNamed:[volumImages
objectAtIndex:0]];
}
- (IBAction)downAction:(id)sender{
按下录音
if([selfcanRecord]) {
NSError *error =nil;
必须真机上测试,模拟器上可能会崩溃
recorder = [[AVAudioRecorder alloc] initWithURL:[NSURL
URLWithString:playName] settings:recorderSettingsDict error:&error];
if(recorder) {
是否允许刷新电平表，默认是off
recorder.meteringEnabled =YES;
创建文件，并准备录音
[recorder prepareToRecord];
开始录音
[recorder record];
启动定时器,为了更新电平
timer = [NSTimer scheduledTimerWithTimeInterval:0.1target:selfselector:@selector(levelTimer:) userInfo:nilrepeats:YES];
}else
{
interrorCode =CFSwapInt32HostToBig ([error code]);
NSLog(@"Error: %@
[%4.4s])", [error localizedDescription], (char*)&errorCode);
}
}
}
- (IBAction)upAction:(id)sender{
松开 结束录音
录音停止
[recorder stop];
recorder =nil;
结束定时器
[timer
invalidate];
timer =nil;
图片重置
soundLodingImageView.image = [UIImage imageNamed:[volumImages
objectAtIndex:0]];
}
以下是AVAudioPlayer播放器的使用方法：
- (IBAction)playAction:(id)sender{
NSError
*playerError;
播放
player=nil;
player
= [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:playName]
error:&playerError];
if(player ==nil)
{
NSLog(@"ERror creating player: %@",[playerError description]);
}else{
[player play];
}
}
- (IBAction)playAction:(id)sender{
NSError
*playerError;
播放
player=nil;
player
= [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:playName]
error:&playerError];
if(player ==nil)
{
NSLog(@"ERror creating player: %@",[playerError description]);
}else{
[player play];
}
}
提示:如果是7.0，第一次运行会提示，是否允许使用麦克风
if([[[UIDevice currentDevice] systemVersion]compare:@"7.0"] !=NSOrderedAscending)
{
7.0第一次运行会提示，是否允许使用麦克风
AVAudioSession *session = [AVAudioSession sharedInstance];
NSError
*sessionError;
AVAudioSessionCategoryPlayAndRecord用于录音和播放
[session setCategory:AVAudioSessionCategoryPlayAndRecord
error:&sessionError];
if(session ==nil)
NSLog(@"Error creating session:
%@", [sessionError description]);
else
[session setActive:YESerror:nil];
}
if([[[UIDevice currentDevice] systemVersion]compare:@"7.0"] !=NSOrderedAscending)
{
7.0第一次运行会提示，是否允许使用麦克风
AVAudioSession *session = [AVAudioSession sharedInstance];
NSError
*sessionError;
AVAudioSessionCategoryPlayAndRecord用于录音和播放
[session setCategory:AVAudioSessionCategoryPlayAndRecord
error:&sessionError];
if(session ==nil)
NSLog(@"Error creating session:
%@", [sessionError description]);
else
[session setActive:YESerror:nil];
}
ok！完美，perfect！
