Appium 无法在 xCode 13.3 和 iOS 15.4 上截图

Question

几天前我醒来在iOS模拟器上运行appium UI自动化测试，该测试一直运行完美，没有任何错误。我最近升级到了 iOS 15.4 和 iOS 13.3，令我惊讶的是 Appium 无法再次截图。我尝试检查原因可能是什么，并发现此处发布的完全相同的问题 套接字挂起错误在 appium 中截取屏幕截图（iOS 15.4 beta 和 xCode 13.3 beta 2）。我在 Apple 帖子 Xcode 12 Beta 3 发行说明 中也发现了这一点。目前有解决方法吗？

这是我收到的错误

[HTTP] --> GET /wd/hub/session/ea84cef2-3649-4e76-91b9-23cec159e3a1/element/1B000000-0000-0000-1439-000000000000/screenshot
[HTTP] {}
[debug] [W3C (ea84cef2)] Calling AppiumDriver.getElementScreenshot() with args: ["1B000000-0000-0000-1439-000000000000","ea84cef2-3649-4e76-91b9-23cec159e3a1"]
[debug] [XCUITest] Executing command 'getElementScreenshot'
[debug] [WD Proxy] Matched '/element/1B000000-0000-0000-1439-000000000000/screenshot' to command name 'getElementScreenshot'
[debug] [Protocol Converter] Did not know how to rewrite the original URL '/element/1B000000-0000-0000-1439-000000000000/screenshot' for W3C protocol
[debug] [WD Proxy] Proxying [GET /element/1B000000-0000-0000-1439-000000000000/screenshot] to [GET http://127.0.0.1:8100/session/88FE5109-F180-482B-B948-980F345404CC/element/1B000000-0000-0000-1439-000000000000/screenshot] with no body
[WD Proxy] Got response with status 500: {"value":{"error":"unable to capture screen","message":"Error Domain=com.facebook.WebDriverAgent Code=1 \"Cannot take a screenshot within 20000 ms timeout\" UserInfo={NSLocalizedDescription=Cannot take a screenshot within 20000 ms timeout}","traceback":""},"sessionId":"88FE5109-F180-482B-B948-980F345404CC"}
[debug] [W3C] Matched W3C error code 'unable to capture screen' to UnableToCaptureScreen
[debug] [W3C (ea84cef2)] Encountered internal error running command: UnableToCaptureScreen: Error Domain=com.facebook.WebDriverAgent Code=1 "Cannot take a screenshot within 20000 ms timeout" UserInfo={NSLocalizedDescription=Cannot take a screenshot within 20000 ms timeout}
[debug] [W3C (ea84cef2)]     at errorFromW3CJsonCode (/Users/kadeoye/.appium/appium-xcuitest-driver/node_modules/appium-base-driver/lib/protocol/errors.js:780:25)
[debug] [W3C (ea84cef2)]     at ProxyRequestError.getActualError (/Users/kadeoye/.appium/appium-xcuitest-driver/node_modules/appium-base-driver/lib/protocol/errors.js:663:14)
[debug] [W3C (ea84cef2)]     at JWProxy.command (/Users/kadeoye/.appium/appium-xcuitest-driver/node_modules/appium-base-driver/lib/jsonwp-proxy/proxy.js:272:19)
[debug] [W3C (ea84cef2)]     at runMicrotasks (<anonymous>)
[debug] [W3C (ea84cef2)]     at processTicksAndRejections (node:internal/process/task_queues:96:5)
[debug] [W3C (ea84cef2)]     at XCUITestDriver.proxyCommand (/Users/kadeoye/.appium/appium-xcuitest-driver/node_modules/appium-xcuitest-driver/lib/commands/proxy-helper.js:96:12)
[debug] [W3C (ea84cef2)]     at XCUITestDriver.getElementScreenshot (/Users/kadeoye/.appium/appium-xcuitest-driver/node_modules/appium-xcuitest-driver/lib/commands/screenshots.js:52:16)
[HTTP] <-- GET /wd/hub/session/ea84cef2-3649-4e76-91b9-23cec159e3a1/element/1B000000-0000-0000-1439-000000000000/screenshot 500 20106 ms - 1319

Answer 1

改回 iOS 15.2 我遇到了同样的问题，挣扎了几个小时......尝试了一切......这与你的情况完全相同。昨天还可以用，今天突然就不行了。所以最后，唯一的变化就是 xcode 模拟器从 15.2 更新到了 iOS 15.4。这就是为什么 appium 检查器停止工作并截屏的原因。我想 appium 方面的更新需要一些时间，但在那之前只需回滚到最新的稳定 iOS 模拟器版本 15.2。 如何做到这一点 - Xcode ->首选项->组件->选择旧版 iOS 模拟器 ->立即下载、检查并安装 ->构建->瞧：）

Answer 2

可以通过将 WebDriverAgentLib/Utilities/FBScreenshot.m （第 257 行）更改

(nullable id)screenshotRequestWithScreenID:(unsigned int)screenID

为：

(nullable id)screenshotRequestWithScreenID:(long long)screenID

报告问题，解决方案也在这里：
https://github.com/appium/appium/issues/16604