可能重复:
How can I find out if an external headset is connected to an iPhone?
我正在开发音频播放器应用程序,并且在一种模式(播放模式)中我想检测耳机的状态,如果插入插孔,它应该播放其他不应该。
编辑以下是我的代码中的一个片段,也有关于我尝试做什么的解释。我在SO上找到了其他线程的大部分代码,但仍然无法按照我的意愿运行。
- (void)isHeadsetPluggedIn {
UInt32 routeSize = sizeof (CFStringRef);
CFStringRef route;
AudioSessionGetProperty (kAudioSessionProperty_AudioRoute,
&routeSize,
&route);
NSString* routeStr = (NSString*)route;
NSRange headsetRange = [routeStr rangeOfString : @"Headset"];
NSRange receiverRange = [routeStr rangeOfString : @"Receiver"];
if(headsetRange.location != NSNotFound) {
// Don't change the route if the headset is plugged in.
NSLog(@"headphone is plugged in ");
//here is the place i want to play music
/* AVAudioPlayer *mySound;
mySound =[[AVAudioPlayer alloc]initWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"apple_SIMToolkitPositiveACK" withExtension:@"mp3" ]error:nil];
[mySound play];
//here is the place where i must receive the info about plug-in(headset)
*/
}
else if (receiverRange.location != NSNotFound) {
// Change to play on the speaker
NSLog(@"play on the speaker");
}
else {
NSLog(@"Unknown audio route.");
}
}