Ios BLE-didDiscoverServices从未被调用

我见过一些这种性质的问题，但没有一个能解决我的问题。我正在尝试连接到一个可扩展设备。在我回电话之前一切都很顺利

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error

这似乎从未被称为。以下是我所拥有的：

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
    self.connected = [NSString stringWithFormat:@"Connected: %@", peripheral.state == CBPeripheralStateConnected ? @"YES" : @"NO"];
    NSLog(@"%@", self.connected);

    [peripheral setDelegate:self];

    if (peripheral.services) {
        [self peripheral:peripheral didDiscoverServices:nil]; //already discovered services, DO NOT re-discover. Just pass along the peripheral.
    } else {
        [peripheral discoverServices:nil]; //yet to discover, normal path. Discover your services needed
    }
}

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
{
    NSLog(@"here");

    for(CBService* svc in peripheral.services)
    {
        if(svc.characteristics)
            [self peripheral:peripheral didDiscoverCharacteristicsForService:svc error:nil]; //already discovered characteristic before, DO NOT do it again
        else
            [peripheral discoverCharacteristics:nil
                                     forService:svc]; //need to discover characteristics

        NSString *string = [NSString stringWithFormat:@"Discovered service: %@", svc.UUID];
        NSLog(@"%@", string);
        [self appendTextToDeviceInfo:string];
    }

}

我可以看到日志输出：

已连接：是

但就是这样。didDiscoverServices回调中似乎没有调用任何内容。我已经删除并重新安装了应用程序，还重新启动了设备

有人知道我做错了什么吗？谢谢大家!

编辑
以下是头文件：

#import <UIKit/UIKit.h>
@import CoreBluetooth;
@import QuartzCore;

@interface ViewController : UIViewController <CBCentralManagerDelegate, CBPeripheralDelegate>

@property (nonatomic, strong) CBCentralManager *centralManager;
@property (nonatomic, strong) CBPeripheral *myPeripheral;

@end

---

您是否在

strong

属性中保存了对已连接外围设备的引用？是的，我保存了。我将把.h文件添加到帖子中。您将在哪里分配给

self.myperipal

？我在

didiscoverperipal

中进行分配。请参见编辑2。您的外围设备是什么？app store中的LightBlue应用程序能否发现其服务？

- (void)centralManager:(CBCentralManager *)central
 didDiscoverPeripheral:(CBPeripheral *)peripheral
     advertisementData:(NSDictionary *)advertisementData
                  RSSI:(NSNumber *)RSSI
{

    NSString *localName = [advertisementData objectForKey:CBAdvertisementDataLocalNameKey];
    if ([localName length] > 0) {

        NSLog(@"Found the device: %@", localName);

        [_centralManager cancelPeripheralConnection:peripheral]; //IMPORTANT, to clear off any pending connections
        [_centralManager stopScan];
        _myPeripheral = peripheral;
        _myPeripheral.delegate = self;
        [_centralManager connectPeripheral:_myPeripheral options:nil];
    }
}