檢測藍(lán)牙已連接 的情況下更加具體的獲取一些當(dāng)前連接設(shè)備的信息數(shù)據(jù),具體實現(xiàn)方法如下:

#pragma mark - ****************************** 檢測已連接的藍(lán)牙設(shè)備
+ (NSMutableDictionary *)getDetectsConnectedBluetoothDevices {
    AVAudioSessionPortDescription *portDescription = [YHUtility isBluetoothHeadsetConnectedEntity];
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    if (portDescription) { // 已連接UID
        NSLog(@"[藍(lán)牙檢測] - 狀態(tài) - 已連接:\n[類型] - %@\n[名稱] - %@\n[UID] - %@", [portDescription portType], [portDescription portName], [portDescription UID]);
        [dict setValue:[NSString convertNull:[portDescription portType]] forKey:@"type"]; // 連接方式
        [dict setValue:[NSString convertNull:[portDescription portName]] forKey:@"name"]; // 設(shè)備名稱
        [dict setValue:@"active" forKey:@"state"]; // 連接狀態(tài)(激活: active & 未激活: unactivated)
    } else { // 未連接
        [dict setValue:@"none" forKey:@"state"];
        
    }
    return dict;
}

#pragma mark - ****************************** 藍(lán)牙耳機是否鏈接 - 實體
+ (AVAudioSessionPortDescription *)isBluetoothHeadsetConnectedEntity {
    /*
     藍(lán)牙開啟未鏈接耳機:
     Speaker
     
     單向保真音頻協(xié)議(輸出):
     BluetoothA2DPOutput
     ...
     
     雙向保真音頻協(xié)議(輸入 & 輸入):
     BluetoothHFP - HFP(Hands-Free Profile)
     BluetoothHSP - HSP(HeadSet Profile)
     
     其它:
     Receiver
     */
    AVAudioSession *session = [AVAudioSession sharedInstance];
    AVAudioSessionRouteDescription *routeDescription = [session currentRoute];
//    NSLog(@"%@", routeDescription);
    if (routeDescription) {
        NSArray *outputs = [routeDescription outputs]; // 輸入源
        if (outputs && 0 < [outputs count]) {
            AVAudioSessionPortDescription *portDescription = [outputs objectAtIndex:0];
            NSString *portType = [portDescription portType];
            NSLog(@"PortType: %@", portType); // 藍(lán)牙開啟未鏈接: Speaker && 鏈接耳機: BluetoothA2DPOutput BluetoothHFP BluetoothHSP
            if (portType && [portType isEqualToString:@"BluetoothA2DPOutput"]) {
                NSLog(@"[藍(lán)牙檢測] - 狀態(tài) - 輸出 - %@", [portDescription portName]);
                return  portDescription;
            } else if (portType && [portType isEqualToString:@"BluetoothHFP"] && [portType isEqualToString:@"BluetoothHSP"]) {
                NSLog(@"[藍(lán)牙檢測] - 狀態(tài) - 輸出 & 輸入 - %@", [portDescription portName]);
                return portDescription;
            }
        }
    }
    return nil;
}

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