如何檢測我的蘋果設備是否支持藍牙低功耗

Question

是否有API可以用來判斷我的應用運行的Apple設備（iPad/iPod/iPhone）是否支持藍牙低功耗（BTLE）。

Answer 1

假設你有一個的iOS5或iOS6的設備和你有一個CBCentralManager對象，你可以用下面的檢查其CBCentralManagerState：

switch ([_manager state]) 
{ 
    case CBCentralManagerStateUnsupported: 
     state = @"This device does not support Bluetooth Low Energy."; 
     break; 
    case CBCentralManagerStateUnauthorized: 
     state = @"This app is not authorized to use Bluetooth Low Energy."; 
     break; 
    case CBCentralManagerStatePoweredOff: 
     state = @"Bluetooth on this device is currently powered off."; 
     break; 
    case CBCentralManagerStateResetting: 
     state = @"The BLE Manager is resetting; a state update is pending."; 
     break; 
    case CBCentralManagerStatePoweredOn: 
     state = @"Bluetooth LE is turned on and ready for communication."; 
     break; 
    case CBCentralManagerStateUnknown: 
     state = @"The state of the BLE Manager is unknown."; 
     break; 
    default: 
     state = @"The state of the BLE Manager is unknown."; 

} 

您還需要注意centralManagerDidUpdateState:central委託更新，然後在您的應用中採取適當的措施。

Answer 2

查找CoreBluetooth.framework ... CBCentralManagerStateUnsupported等

Answer 3

另一種方法是檢查設備是否支持iBeacons。這是因爲設備必須支持藍牙LE（即藍牙4）才能找到iBeacon。只需導入CoreLocation和使用以下命令：

斯威夫特：

if (CLLocationManager.isMonitoringAvailable(for: CLBeaconRegion.self)){ 
    print("Bluetooth LE is supported") 
} 

目標C：

if ([CLLocationManager isMonitoringAvailableForClass:[CLBeaconRegion class]]){ 
    NSLog(@"Bluetooth LE is supported"); 
}