iOS耳机操作

iOS在7之后增加的麦克风权限的申请，代码如下：

1 2 3 4 5 6 7 8 9 10 11 12

AVAudioSession *avSession = [AVAudioSession sharedInstance]; if ([avSession respondsToSelector:@selector(requestRecordPermission:)]) { [avSession requestRecordPermission:^(BOOL available) { if (available) { // 有麦克风权限 } else { dispatch_async(dispatch_get_main_queue(), ^{ [[[UIAlertView alloc] initWithTitle:@"无法录音" message:@"请在“设置-隐私-麦克风”选项中允许xx访问你的麦克风" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil] show]; }); } }]; }

iphone检测耳机插入/拔出

判断手机当前是否使用的是内置的麦克风(可以用此方法判断插入的耳机是否有麦克风)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

- (BOOL)isCurrentUsingBuildInMicrophone { NSError *error = nil; BOOL result = YES; result = [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:&error]; if (!result) { NSLog(@"%@", error); return YES; } result = [[AVAudioSession sharedInstance] setActive:YES error:&error]; if (!result) { NSLog(@"setActive failed"); return YES; } CFDictionaryRef ards; UInt32 size = sizeof(CFDictionaryRef); OSStatus os = AudioSessionGetProperty(kAudioSessionProperty_AudioRouteDescription, &size, &ards); if (os == kAudioSessionNoError && ards && CFDictionaryGetValue(ards, kAudioSession_AudioRouteKey_Inputs)) { NSArray *inputs = (__bridge NSArray *)CFDictionaryGetValue(ards, kAudioSession_AudioRouteKey_Inputs); if (inputs && inputs.count > 0) { for (NSDictionary *dic in inputs) { NSString *type = dic[(__bridge NSString *)kAudioSession_AudioRouteKey_Type]; if ([type isEqualToString:(__bridge NSString *)kAudioSessionInputRoute_BuiltInMic]) { return YES; } } } } else { // 耳机没有mic return YES; } return NO; }