我有两个应用程序,它们的BLE功能非常相似,但是一个正确扫描和发现其他没有的外围设备。
他们都报告初始化指针CBCentralManager
&检查它是否已开启&功能,但一个继续发现&能够连接到设备&另一个没有。
在无法正常工作的情况下,对scanForPeripheralsWithServices
的调用顺利进行,但永远不会触发didDiscoverPeripheral
回调。我能想到的最大区别是一个项目使用纯Objective-C
& ARC而另一个使用Objective-C
&的混合C ++并且不使用自动引用计数。
这可能是问题的根源吗?如果是这样,有办法吗?在过去没有ARC的情况下,我能够与CoreBluetooth
合作,但如果我无法从文档中解析出来,那么它可能已经发生了变化。
如果它不是ARC,则对scanForPeripheralsWithServices的两次调用如下所示:
功能
- (int) findBLEPeripherals:(int) timeout
{
NSLog(@"start finding");
if (self.CM.state != CBCentralManagerStatePoweredOn)
{
NSLog(@"CoreBluetooth not correctly initialized !");
NSLog(@"State = %d (%s)\r\n", self.CM.state, [self centralManagerStateToString:self.CM.state]);
return -1;
}
[NSTimer scheduledTimerWithTimeInterval:(float)timeout target:self selector:@selector(scanTimer:) userInfo:nil repeats:NO];
[self.CM scanForPeripheralsWithServices:[NSArray arrayWithObject:[CBUUID UUIDWithString:@RBL_SERVICE_UUID]] options:nil];
NSLog(@"scanForPeripheralsWithServices");
return 0; // Started scanning OK !
}
非功能
- (void)startScan
{
NSLog(@"startScan");
isScanning = true;
NSDictionary *options = nil;
didUpdateDiscoveredDeviceFlag = [delegate respondsToSelector:@selector(didUpdateDiscoveredRFduino:)];
if (didUpdateDiscoveredDeviceFlag) {
options = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES]
forKey:CBCentralManagerScanOptionAllowDuplicatesKey];
}
[devices removeAllObjects];
if (self.central.state != CBCentralManagerStatePoweredOn)
{
NSLog(@"CoreBluetooth not correctly initialized !");
// NSLog(@"State = %d (%s)\r\n", self.central.state, [self centralManagerStateToString:self.central.state]);
}
[NSTimer scheduledTimerWithTimeInterval:(float)60 target:self selector:@selector(scanTimer:) userInfo:nil repeats:NO];
[self.central scanForPeripheralsWithServices:[NSArray arrayWithObject:[CBUUID UUIDWithString:@RBL_SERVICE_UUID]] options:@{ CBCentralManagerScanOptionAllowDuplicatesKey : @YES }];
if (didUpdateDiscoveredDeviceFlag) {
[self startRangeTimer];
}
}
两个头文件的相关部分:
功能
@interface BLE : NSObject <CBCentralManagerDelegate, CBPeripheralDelegate> {
}
@property (nonatomic,assign) id <BLEDelegate> delegate;
@property (strong, nonatomic) NSMutableArray *peripherals;
@property (strong, nonatomic) NSMutableArray *peripheralsRssi;
@property (strong, nonatomic) CBCentralManager *CM;
@property (strong, nonatomic) CBPeripheral *activePeripheral;
非功能
@interface BLEDeviceManager : NSObject <CBCentralManagerDelegate>
{
}
+ (BLEDeviceManager *)sharedDeviceManager;
@property (strong, nonatomic) CBCentralManager *central;
任何建议都非常感谢!
答案 0 :(得分:0)
所以这有点傻但是手机的重新启动+清理/构建修复了一切。我怀疑这两个应用程序在发布CBCentralManager句柄时并没有很好地互相玩,但这只是一个猜测。我对CoreBluetooth或Objective C并不十分熟悉,所以我的猜测并不是很清楚。