如何检测我的苹果设备是不是支持蓝牙低功耗

Posted 2023-03-05

【中文标题】如何检测我的苹果设备是不是支持蓝牙低功耗

【英文标题】：How can I detect if my apple device supports Bluetooth Low Energy如何检测我的苹果设备是否支持蓝牙低功耗

【发布时间】：2012-11-27 13:24:22

【问题描述】：

是否有一个 API 可以让我判断运行我的应用程序的 Apple 设备（iPad/iPod/iPhone）是否支持低功耗蓝牙 (BTLE)。

【参考方案1】：

假设您有一个 ios5 或 iOS6 设备并且您有一个 CBCentralManager 对象，您可以使用以下命令检查其 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.";

您还需要注意centralManagerDidUpdateState:central 委托更新，然后在您的应用中采取适当的操作。

【讨论】：

如果我得到CBCentralManagerStatePoweredOn 或CBCentralManagerStatePoweredOff 是否保证支持BLE？

【参考方案2】：

另一个选项是检查设备是否支持 iBeacons。这是因为设备必须支持蓝牙 LE（即蓝牙 4）才能找到 iBeacon。只需导入 CoreLocation 并使用以下内容：

斯威夫特：

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

目标 C：

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

【讨论】：

这对我有用。这样你就可以有一个简单的 getter，而不是尝试使用状态来做一些更复杂的模式。

【参考方案3】：

寻找CoreBluetooth.framework... CBCentralManagerStateUnsupported等