我目前正在创建一个可以使用蓝牙设备的iPhone应用程序(Xcode4.3.1,iOS5)!这个应用程序的主要目标是室内导航(建筑物内的GPS并不是很准确)。
我在这里看到的唯一解决方案(使我的应用程序保持在AppStore上)是尝试扫描可用的蓝牙设备!
我试着使用CoreBluetooth框架,但是我没有得到可用的设备列表!也许我没有正确使用这些函数
#import <UIKit/UIKit.h>
#import <CoreBluetooth/CoreBluetooth.h>
@interface AboutBhyperView : UIViewController <CBPeripheralDelegate, CBCentralManagerDelegate>
{
CBCentralManager *mgr;
}
@property (readwrite, nonatomic) CBCentralManager *mgr;
@end
- (void)viewDidLoad
{
[super viewDidLoad];
mgr = [[CBCentralManager alloc] initWithDelegate:self queue:nil];
}
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI {
NSLog([NSString stringWithFormat:@"%@",[advertisementData description]]);
}
-(void)centralManager:(CBCentralManager *)central didRetrievePeripherals:(NSArray *)peripherals{
NSLog(@"This is it!");
}
- (void)centralManagerDidUpdateState:(CBCentralManager *)central{
NSString *messtoshow;
switch (central.state) {
case CBCentralManagerStateUnknown:
{
messtoshow=[NSString stringWithFormat:@"State unknown, update imminent."];
break;
}
case CBCentralManagerStateResetting:
{
messtoshow=[NSString stringWithFormat:@"The connection with the system service was momentarily lost, update imminent."];
break;
}
case CBCentralManagerStateUnsupported:
{
messtoshow=[NSString stringWithFormat:@"The platform doesn't support Bluetooth Low Energy"];
break;
}
case CBCentralManagerStateUnauthorized:
{
messtoshow=[NSString stringWithFormat:@"The app is not authorized to use Bluetooth Low Energy"];
break;
}
case CBCentralManagerStatePoweredOff:
{
messtoshow=[NSString stringWithFormat:@"Bluetooth is currently powered off."];
break;
}
case CBCentralManagerStatePoweredOn:
{
messtoshow=[NSString stringWithFormat:@"Bluetooth is currently powered on and available to use."];
[mgr scanForPeripheralsWithServices:nil options:nil];
//[mgr retrieveConnectedPeripherals];
//--- it works, I Do get in this area!
break;
}
}
NSLog(messtoshow);
}
我对这行不太确定,如何传递正确的参数?
[mgr scanForPeripheralsWithServices:nil options:nil];
我看了一下苹果的参考资料..我还是不明白CBUUID是什么?每个设备都有蓝牙标识吗?我在哪里可以找到它?
- (void)scanForPeripheralsWithServices:(NSArray *)serviceUUIDs options:(NSDictionary *)options;
参数serviceUUIDs -应用程序感兴趣的CBUUID数组。选项-自定义扫描的字典,请参阅CBCentralManagerScanOptionAllowDuplicatesKey。
有没有其他方法可以在IOS上使用蓝牙?我的意思是,不使用BLE4.0的旧框架!
如有任何建议,我们将不胜感激!
谢谢!
发布于 2012-06-21 06:04:57
对于蓝牙3.0来说,This guide看起来很有前途。请记住,CoreBluetooth框架仅适用于蓝牙低能耗(4.0)。在bluetooth.com's dev-pages上,您可以看到一些全局定义的服务的示例,正如关阳提到的,您可以看到心率服务是0x180D。单位的UUID`s由厂家定义。
这里有一个代码片段,可能会对您有所帮助。
// Initialize a private variable with the heart rate service UUID
CBUUID *heartRate = [CBUUID UUIDWithString:@"180D"];
// Create a dictionary for passing down to the scan with service method
NSDictionary *scanOptions = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:CBCentralManagerScanOptionAllowDuplicatesKey];
// Tell the central manager (cm) to scan for the heart rate service
[cm scanForPeripheralsWithServices:[NSArray arrayWithObject:heartRate] options:scanOptions]
发布于 2012-04-17 22:45:58
你应该看看one of the examples。下面是相关的代码行:
[manager scanForPeripheralsWithServices:[NSArray arrayWithObject:[CBUUID UUIDWithString:@"180D"]] options:nil];
(我知道这是一个Mac示例,但是iOS CoreBluetooth应用编程接口非常相似。)
CBUUID标识您感兴趣的服务,而不是设备。标准服务具有16位UUID,在本例中,0x180d用于心率监视器,或者0x180a用于设备信息,而专有服务具有128位UUID (16字节)。
大多数设备都实现了设备信息服务,所以如果您只是在寻找任何设备,您可以尝试[CBUUID UUIDWithString:@"180A"]
。
发布于 2013-06-28 04:29:40
在扫描设备时尝试使用此选项
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:NO], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
[self.centralManager scanForPeripheralsWithServices:nil options:options];
您将能够通过didDiscoverPeripheral
委托方法获取设备列表
https://stackoverflow.com/questions/10178293
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