iOS在7之后增加的麦克风权限的申请，代码如下：
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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];
});
}
}];
}
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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)
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- (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;
}
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