我正在尝试制作一个使用 iBeacons 在一定距离内触发音频的应用程序。在这种情况下，它是在紧邻信标时。我写了一个执行此操作的 if 语句，唯一的问题是只要设备在附近，音频文件就会一直重新启动。我希望它只触发一次，播放并完成。不要一遍又一遍地触发。
要播放的音频在这里定义。
-(void)playSound
{
NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/05 Rooster.m4a", [[NSBundle mainBundle] resourcePath]]];
NSError *error;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
audioPlayer.numberOfLoops = 1;
audioPlayer.currentTime = 0;
audioPlayer.volume = 100.0;
[audioPlayer play];
}
稍后在if语句中调用音频
-(void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region {
beacon = [beacons lastObject];
self.beaconFoundLabel.text = @"In Range";
self.proximityUUIDLabel.text = beacon.proximityUUID.UUIDString;
self.majorLabel.text = [NSString stringWithFormat:@"%@", beacon.major];
self.minorLabel.text = [NSString stringWithFormat:@"%@", beacon.minor];
self.accuracyLabel.text = [NSString stringWithFormat:@"%f", beacon.accuracy];
if (beacon.proximity == CLProximityUnknown) {
self.distanceLabel.text = @"Unknown Proximity";
}
else if (beacon.proximity == CLProximityImmediate)
{
self.distanceLabel.text = @"Immediate";
self.view.backgroundColor = [UIColor greenColor];
_portrait.hidden = YES;
_portraitText.hidden = YES;
_landscape.hidden = NO;
_landscapeText.hidden = NO;
_artworkTitle.text = @"Impression, Sunrise (Impression, soleil levant), 1872";
UIImage *photo = [UIImage imageNamed: @"Sunrise.png"];
[_landscape setImage:photo];
_landscapeText.text = @"Dated 1872, its subject is the harbour of Le Havre in France, using very loose brush strokes that suggest rather than delineate it. Monet explained the title later: \n\nLandscape is nothing but an impression, and an instantaneous one, hence this label that was given us, by the way because of me. I had sent a thing done in Le Havre, from my window, sun in the mist and a few masts of boats sticking up in the foreground.\n\n They asked me for a title for the catalogue, it couldn't really be taken for a view of Le Havre, and I said: 'Put Impression.'";
[self playSound];
}
最佳答案
定义一个类似Bool isPlaying的属性，并在viewDidLoad中将其设置为false
实现(这是播放完当前歌曲后调用的):
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
self.isPlaying = false;
}
在玩游戏时不要管理 iBeacon 更改
-(void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region {
if (self.isPlaying) return;
...
[self playSound];
self.isPlaying = true;
}
希望这能有所帮助
关于ios - 使用 iBeacon 触发音频，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22944934/