今天在做一个项目,因为要播放一个音频,就选择用 AVAudioPlayer来来做,因为以前用过,也没有注意太多后来就直接写,但是写好之后运行看效果,怎么也播放不出来,本来是因为本地音频文件有问题,后来重新找一个文件然后在播放,还是出现同样的问题.
用这段代码,以前是正常的,现在就不可以了,(网上还有好多开发人员用该方式是没有问题)
- (void)playRuningDistance:(TrainingPlayAudioType)playType{
NSString *playFileName = [NSString
stringWithFormat:@"distance%d",playType];
NSString *filepath = [[NSBundle
mainBundle] pathForResource:playFileName
ofType:@"mp3"];
BOOL fileexit = [[NSFileManager
defaultManager] fileExistsAtPath:filepath];
NSLog(@"本地问价 %d",fileexit);
if (fileexit) {
if (self.playerMusic && [self.playerMusic
isPlaying]) {
return;
}
NSError *error;
self.playerMusic =
nil;
self.playerMusic =
[[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:&error];
[self.playerMusic
prepareToPlay];
[self.playerMusic
play];
NSLog(@"error loading %@",error);
}
}
后来打印 error : Error Domain=NSOSStatusErrorDomain Code=-10875 "未能完成操作。（“OSStatus”错误 -10875。）"
后再在往常差有的说,需要加入以下代码:
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];
如果不添加会没有声音.但是加入了还是解决不了问题,
后来看官方文档,说建议用 [[AVAudioPlayer alloc] initWithData:data error:&error];
替代[[AVAudioPlayer alloc]initWithContentsOfURL:fileURL error:&error];
- (void)playRuningDistance:(TrainingPlayAudioType)playType{
NSString *playFileName = [NSString
stringWithFormat:@"distance%d",playType];
NSString *filepath = [[NSBundle
mainBundle] pathForResource:playFileName
ofType:@"mp3"];
BOOL fileexit = [[NSFileManager
defaultManager] fileExistsAtPath:filepath];
NSLog(@"本地问价 %d",fileexit);
if (fileexit) {
if (self.playerMusic && [self.playerMusic
isPlaying]) {
return;
}
NSError *error;
self.playerMusic =
nil;
NSData *data = [[NSFileManager
defaultManager] contentsAtPath:filepath];
self.playerMusic = [[AVAudioPlayer
alloc] initWithData:data
error:&error];
[self.playerMusic
prepareToPlay];
[self.playerMusic
play];
NSLog(@"error loading %@",error);
}
}
结果使用问题解决,希望能帮助你们,自己也留作问题解决.