使用iOS 5与蓝牙外围物配对

Question

我正在使用蓝牙技术4.0开发邻近感应应用程序。我能够发现设备。但是我无法与他们配对。我也不能调用[peripheral readRssi]方法。我想实现的方式是，如果中央扫描说10个设备，并且在找到许多设备后，它应该停止扫描，然后将设备配对，然后不断读取RSSI值。

我的代码。

- (void) centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
    BOOL (^test)(id obj, NSUInteger idx, BOOL *stop);
    test = ^ (id obj, NSUInteger idx, BOOL *stop) {
        if([[[obj peripheral] name] compare:peripheral.name] == NSOrderedSame)
            return YES;
        return NO;
    };
    PeripheralCell* cell;
    NSUInteger t=[peripherals indexOfObjectPassingTest:test];
    if(t!= NSNotFound)
    {
        cell=[peripherals objectAtIndex:t];
        cell.peripheral=peripheral;
        cell.rssi=RSSI;
        //NSLog(@"%@",RSSI);
        [scanResultTableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:t inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
    }
    else{
        cell=[[PeripheralCell alloc] init];
        [peripherals addObject: cell];
        [myPeripheral addObject: peripheral];
        cell.peripheral=peripheral;
        cell.rssi=RSSI;
        NSLog(@"UUID===%@",[peripheral UUID]);
        [scanResultTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:[peripherals count]-1 inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
        if([myPeripheral count]==3)
        {
            [manager stopScan];
            for(CBPeripheral *p in myPeripheral)
            {
                [manager connectPeripheral:p options:nil];      //this calls didConnectPeripheral but gets disconnected after some time 
                [p readRssi];     //this does not work even after connecting
            }
        }
    }
}
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    //self.cBReady = false;
    switch (central.state) {
        case CBCentralManagerStatePoweredOff:
            NSLog(@"CoreBluetooth BLE hardware is powered off");
            break;
        case CBCentralManagerStatePoweredOn:
            NSLog(@"CoreBluetooth BLE hardware is powered on and ready");
            //self.cBReady = true;
            break;
        case CBCentralManagerStateResetting:
            NSLog(@"CoreBluetooth BLE hardware is resetting");
            break;
        case CBCentralManagerStateUnauthorized:
            NSLog(@"CoreBluetooth BLE state is unauthorized");
            break;
        case CBCentralManagerStateUnknown:
            NSLog(@"CoreBluetooth BLE state is unknown");
            break;
        case CBCentralManagerStateUnsupported:
            NSLog(@"CoreBluetooth BLE hardware is unsupported on this platform");
            break;
        default:
            break;
    }
}
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
    NSLog(@"connected peripheral");
}
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error;
{
    NSLog(@"peripheral disconnected");
}
- (void)peripheralDidUpdateRSSI:(CBPeripheral *)peripheral error:(NSError *)error
{
    NSLog(@"updated rssi");
}

我如何配对设备...

Answer 1

在大量搜索和跟踪和错误之后，我发现我的代码是正确的。我只需要从iPad的设置中删除设备。

goto Settings > General > Bluetooth > Devices.

通过单击附件指示器选择设备。在下一个屏幕中，只需单击"忘记此设备"。

再次运行应用程序解决了我的问题。