Objective c 如何停止音频工具箱声音?
我有两种不同的按键声音动作。当我按下一个按钮时,它应该播放一个声音,当我按下另一个按钮时,它应该停止第一个声音并播放另一个声音,我如何才能做到这一点 谢谢Objective c 如何停止音频工具箱声音?,objective-c,xcode,avfoundation,audiotoolbox,Objective C,Xcode,Avfoundation,Audiotoolbox,我有两种不同的按键声音动作。当我按下一个按钮时,它应该播放一个声音,当我按下另一个按钮时,它应该停止第一个声音并播放另一个声音,我如何才能做到这一点 谢谢 -(void) onButtonPressAlbina { [soundID2 stop]; NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"albina" ofType:@"m4a"]; SystemSoundID soundID
-(void) onButtonPressAlbina {
[soundID2 stop];
NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"albina" ofType:@"m4a"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath: soundPath], &soundID);
AudioServicesPlaySystemSound (soundID);
}
-(void) onButtonPressBalena {
NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"balena" ofType:@"m4a"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath: soundPath], &soundID);
AudioServicesPlaySystemSound (soundID);
}
您无法停止通过“
AudioServicesPlaySystemSound
”播放的声音,但您可以改为使用“AVAudioPlayer
”
在对象中保留对“AVAudioPlayer
”的引用,然后在需要停止时调用它
玩
#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVAudioPlayer.h>
AVAudioPlayer *player;
// ...
NSString *path;
NSError *error;
path = [[NSBundle mainBundle] pathForResource:@"albina" ofType:@"m4a"];
if ([[NSFileManager defaultManager] fileExistsAtPath:path])
{
player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&error];
player.volume = 0.5f;
[player prepareToPlay];
[player setNumberOfLoops:0];
[player play];
}
if (player != nil)
{
if (player.isPlaying == YES)
[player stop];
}