我使用 AVAudioplayerDelegate 制作 Audioplayer 。音频播放器功能成功完成。但是我有小问题。我点击播放按钮音频延迟至少触及1到2分钟。这是我的问题。我正在使用此代码。但我的问题不应该解决。所以请帮助我任何人。
-(void)playOrPauseButtonPressed:(id)sender
{
if(playing==NO)
{
[playButton setBackgroundImage:[UIImage imageNamed:@"Pause.png"] forState:UIControlStateNormal];
// Here Pause.png is a image showing Pause Button.
NSError *err=nil;
AVAudioSession *audioSession=[AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
NSLog(@"%@ %d",urlsArray,selectedIndex);
NSString *sourcePath=[urlsArray objectAtIndex:selectedIndex];
NSData *objectData=[NSData dataWithContentsOfURL:[NSURL URLWithString:sourcePath]];
audioPlayer = [[AVAudioPlayer alloc] initWithData:objectData error:&err];
if(err)
{
NSLog(@"Error %ld,%@",(long)err.code,err.localizedDescription);
}
NSTimeInterval bufferDuration=0.005;
[audioSession setPreferredIOBufferDuration:bufferDuration error:&err];
if(err)
{
NSLog(@"Error %ld, %@", (long)err.code, err.localizedDescription);
}
double sampleRate = 44100.0;
[audioSession setPreferredSampleRate:sampleRate error:&err];
if(err)
{
NSLog(@"Error %ld, %@",(long)err.code,err.localizedDescription);
}
[audioSession setActive:YES error:&err];
if(err)
{
NSLog(@"Error %ld,%@", (long)err.code, err.localizedDescription);
}
sampRate=audioSession.sampleRate;
bufferDuration=audioSession.IOBufferDuration;
NSLog(@"SampeRate:%0.0fHZI/OBufferDuration:%f",sampleRate,bufferDuration);
audioPlayer.numberOfLoops = 0;
[audioPlayer prepareToPlay];
audioPlayer.delegate=self;
if(!audioPlayer.playing)
{
[audioPlayer play];
}
playing=YES;
}
else if (playing==YES)
{
[playButton setBackgroundImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
[audioPlayer pause];
playing=NO;
}
if (self.audioPlayer)
{
[self updateViewForPlayerInfo];
[self updateViewForPlayerState];
[self.audioPlayer setDelegate:self];
}
}
- (void)setupAudio
{
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];
UInt32 doSetProperty = 1;
AudioSessionSetProperty (kAudioSessionProperty_OverrideCategoryMixWithOthers, sizeof(doSetProperty), &doSetProperty);
[[AVAudioSession sharedInstance] setActive: YES error: nil];
}
答案 0 :(得分：0)
此序列可能与此链接重复： - what is the best way to play sound quickly upon fast button presses xcode?
我希望这有帮助：）