问题描述
基本上，我有两个应用程序，一个用于扫描蓝牙设备，另一个用于广告，而我试图做的是获取所有iOS设备的列表，该列表在我附近的应用程序中扫描iOS设备。
basically i have two apps, one for scanning for bluetooth devices and the other for advertising, and what i am trying to do is to get a list of all iOS devices, within my proximity on the app which scans for the iOS device .
这是我到目前为止的代码：
This is my code so far:
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，什么也没发生！
When i run the different apps on different iphones, nothing happens !
这不会崩溃，但是 didDiscoverPeripheral 永远不会被呼唤:(请帮帮我！是的，我已经阅读了文档，但仍然不行：（（
This doesn't crash but didDiscoverPeripheral never gets called :( please help me out ! and yes i have gone through the documentation but still no good :((
欢呼声
推荐答案
只有在进入开机状态后才能启动扫描-在扫描应用中使用类似于广告应用中的代码。
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.
在打开电源之前在iOS 7中开始扫描的操作会在控制台上发出警告，但仍然可以。在iOS 8中，此操作不起作用。
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.
这篇关于广告另一个iOS设备后未调用didDiscoverPeripheral的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！