广告在其他iOS设备后didDiscoverPeripheral没有被调用(didDiscoverP

2019-10-21 03:34发布

基本上我有两个应用,一个是扫描蓝牙设备和其他广告,以及我所试图做的是让所有的iOS设备的列表,我上扫描iOS设备的应用附近。

这是我到目前为止的代码:

Scanning.m:

// Scan for all available CoreBluetooth LE devices
    NSDictionary *scanOptions = @{CBCentralManagerScanOptionAllowDuplicatesKey:@(YES)};
    NSArray *services = @[[CBUUID UUIDWithString:@"1CC024D6-E413-4B56-993C-831CAF033366"]];

    [self.centralManager scanForPeripheralsWithServices:services options:scanOptions];

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
    NSLog(@"RSSI: %d", [RSSI intValue]);

}

// method called whenever the device state changes.
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    // Determine the state of the peripheral
    if ([central state] == CBCentralManagerStatePoweredOff) {
        NSLog(@"CoreBluetooth BLE hardware is powered off");
    }
    else if ([central state] == CBCentralManagerStatePoweredOn) {
        NSLog(@"CoreBluetooth BLE hardware is powered on and ready");
    }
    else if ([central state] == CBCentralManagerStateUnauthorized) {
        NSLog(@"CoreBluetooth BLE state is unauthorized");
    }
    else if ([central state] == CBCentralManagerStateUnknown) {
        NSLog(@"CoreBluetooth BLE state is unknown");
    }
    else if ([central state] == CBCentralManagerStateUnsupported) {
        NSLog(@"CoreBluetooth BLE hardware is unsupported on this platform");
    }
}

Advertising.m:

    self.peripheralManager = [[CBPeripheralManager alloc] initWithDelegate:self queue:nil];
    [self listenForRelays];


    /** Required protocol method.  A full app should take care of all the possible states,
 *  but we're just waiting for  to know when the CBPeripheralManager is ready
 */
- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral
{

    if (peripheral.state == CBPeripheralManagerStatePoweredOn)
    {

        // We're in CBPeripheralManagerStatePoweredOn state...
        NSLog(@"self.peripheralManager powered on.");

        // ... so build our service.

    }
}


-(void) listenForRelays {

    if(self.peripheralManager.state == CBPeripheralManagerStatePoweredOn)
    {

        NSDictionary *advertisingData = @{CBAdvertisementDataLocalNameKey:@"my-peripheral",
                                          CBAdvertisementDataServiceUUIDsKey:@[[CBUUID UUIDWithString:@"1CC024D6-E413-4B56-993C-831CAF033322"]]};

        // Start advertising over BLE
        [self.peripheralManager startAdvertising:advertisingData];
    }

}

当我在不同的iPhone运行不同的应用程序,没有任何反应!

这不会崩溃,但didDiscoverPeripheral不会被调用:(请帮助我,是的,我已经通过文件走了,但还是没有好!((

干杯

Answer 1:

You can't initiate your scan until after you are in the powered-on state - use code in your scanning app similar to that which is in your advertising app.

In iOS 7 starting the scan before you were powered on issued a warning on the console, but it still worked. In iOS 8 it doesn't work.



文章来源: didDiscoverPeripheral not been called after advertising another iOS device