英文:
Swift MacOs - Accessibility - AxError: cannot complete
问题
我正在尝试创建一个函数，该函数将返回任何应用程序中的选定文本。为此，我正在使用辅助功能 API，我的函数如下：
func getSelectedText() -> String? {
// 获取当前活动的应用程序
guard let frontmostApplication = NSWorkspace.shared.frontmostApplication,
let runningApplication = NSRunningApplication(processIdentifier: frontmostApplication.processIdentifier) else {
return nil
}
// 获取应用程序的 AXUIElement
let applicationElement = AXUIElementCreateApplication(frontmostApplication.processIdentifier)
var focusedElement: CFTypeRef?
let result = AXUIElementCopyAttributeValue(
applicationElement,
kAXSelectedTextAttribute as CFString,
&focusedElement
)
// !!! result = AxError: cannotComplete !!!
if result != .success {
return nil
}
let focusedUIElement = focusedElement as! AXUIElement
// 获取选定的文本
var selectedText: AnyObject?
let selectedTextResult = AXUIElementCopyAttributeValue(focusedUIElement, kAXSelectedTextAttribute as CFString, &selectedText)
if selectedTextResult == .success, let selectedText = selectedText as? String {
return selectedText
} else {
// 尝试获取焦点元素的值
var value: AnyObject?
let valueResult = AXUIElementCopyAttributeValue(focusedUIElement, kAXValueAttribute as CFString, &value)
if valueResult == .success, let value = value as? String {
return value
} else {
return nil
}
}
}
然而，我在以下行中遇到了 "AxError: cannotComplete" 错误：
let result = AXUIElementCopyAttributeValue(
applicationElement,
kAXSelectedTextAttribute as CFString,
&focusedElement
)
应用程序沙箱已启用，辅助功能也已在操作系统中授权给该应用程序，不确定是否还有其他原因导致失败？
编辑
当我尝试使用以下代码请求权限时：
let prompt = kAXTrustedCheckOptionPrompt.takeUnretainedValue() as String
let options: NSDictionary = [prompt: true]
let appHasPermission = AXIsProcessTrustedWithOptions(options)
appHasPermission 参数为 false。
英文:
I'm trying to create a fuction, that will return selected text in any application. For that purpose I'm using Accessibiliy API, and my function looks like:
func getSelectedText() -> String? {
// Get the currently active application
guard let frontmostApplication = NSWorkspace.shared.frontmostApplication,
let runningApplication = NSRunningApplication(processIdentifier: frontmostApplication.processIdentifier) else {
return nil
}
// Get the AXUIElement for the application
let applicationElement = AXUIElementCreateApplication(frontmostApplication.processIdentifier)
var focusedElement: CFTypeRef?
let result = AXUIElementCopyAttributeValue(
applicationElement,
kAXSelectedTextAttribute as CFString,
&focusedElement
)
// !!! result = AxError: cannotComplete !!!
if result != .success {
return nil
}
let focusedUIElement = focusedElement as! AXUIElement
// Get the selected text
var selectedText: AnyObject?
let selectedTextResult = AXUIElementCopyAttributeValue(focusedUIElement, kAXSelectedTextAttribute as CFString, &selectedText)
if selectedTextResult == .success, let selectedText = selectedText as? String {
return selectedText
} else {
// Try getting the value of the focused element instead
var value: AnyObject?
let valueResult = AXUIElementCopyAttributeValue(focusedUIElement, kAXValueAttribute as CFString, &value)
if valueResult == .success, let value = value as? String {
return value
} else {
return nil
}
}
}
However, I'm getting AxError: cannot compete on the following line:
let result = AXUIElementCopyAttributeValue(
applicationElement,
kAXSelectedTextAttribute as CFString,
&focusedElement
)
App Sandbox is enabled, accessibility is also granted for this app in OS, not sure is there any other reason to fail like that?
EDIT
When I try to request permission using the following:
let prompt = kAXTrustedCheckOptionPrompt.takeUnretainedValue() as String
let options: NSDictionary = [prompt: true]
let appHasPermission = AXIsProcessTrustedWithOptions(options)
appHasPermission param is false
答案1
得分: 0
抱歉，无法为受沙箱限制的应用提供无障碍API。您应该关闭沙箱功能。
英文:
Unfortunately, Accessibility API isn't available for sandboxed apps. You should turn the sandboxing off.
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