在iOS应用程序中检测USB线连接可以通过使用iOS的ExternalAccessory框架来实现。ExternalAccessory框架提供了与外部附件通信的接口,包括通过USB线连接的设备。
要在iOS应用程序中检测USB线连接,可以按照以下步骤进行:
import ExternalAccessory
class ViewController: UIViewController, EAAccessoryDelegate, EAAccessoryManagerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
EAAccessoryManager.shared().registerForLocalNotifications()
NotificationCenter.default.addObserver(self, selector: #selector(accessoryConnected), name: NSNotification.Name.EAAccessoryDidConnect, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(accessoryDisconnected), name: NSNotification.Name.EAAccessoryDidDisconnect, object: nil)
}
@objc func accessoryConnected(notification: NSNotification) {
if let accessory = notification.userInfo?[EAAccessoryKey] as? EAAccessory {
// USB accessory connected
print("USB accessory connected: \(accessory.name)")
}
}
@objc func accessoryDisconnected(notification: NSNotification) {
if let accessory = notification.userInfo?[EAAccessoryKey] as? EAAccessory {
// USB accessory disconnected
print("USB accessory disconnected: \(accessory.name)")
}
}
}
在上述代码中,我们通过注册通知和实现相应的通知处理方法来检测USB线连接。当USB设备连接或断开连接时,会触发相应的通知,我们可以在通知处理方法中进行相应的操作。
需要注意的是,为了能够检测到USB线连接,你需要确保你的应用程序在后台运行,并且在Info.plist文件中添加了相应的后台模式。
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