仿真触摸屏选项不存在，设备仿真不提供触摸屏响应 [英] Emulate Touch Screen option absent, Device Emulation provides no touch screen response

问题描述

我目前正在手机网站上工作，并且我刷新了页面，Chrome意外退出，此后所有触摸屏模拟都不存在和/或失败。

Chrome版本： 36.0.1985.125 m ，
操作系统： Windows 7 Ultimate SP1

谷歌浏览器突然意外停止正常模拟设备。所有的触摸屏功能已被禁用，显然被删除。当我模拟设备时，传感器框未能被检查，并且在检查时不显示任何'仿真触摸屏'选项。

我已经尝试了以下所有内容：

• 卸载/重新安装Chrome并删除所有个人设置，包括卸载所有扩展，恢复所有默认值等。
  
• 重新启动计算机
  
• 运行防病毒软件


• 编辑：安装了Chrome Canary，它产生了完全相同的问题 我可能需要添加相关细节。
  
  
  

  解决方案

  对此抱歉。我们修改了Chrome 36中的触摸模拟，使其更加准确（与Chrome Android中真正发生的事情分享代码）： https://plus.sandbox.google.com/+RickByers/posts/CBCmhVttj5C 。在这个过程中，当真正的触摸支持出现时，我们最终禁用了触摸模拟（当时我们认为这没什么大不了的，因为如果你有一个真正的触摸屏，为什么要用鼠标来伪造一个？）。但是有些Windows电脑报告说他们有触摸屏，但事实上他们并不真的（例如，Visual Studio安装了我认为的触摸屏模拟器）。

  
  
  

  我们是通过 http://crbug.com/395531 解决这个问题 - 希望很快就会有Chrome Canary的构建，可以重新使这些触摸仿真成为可能在此期间，您大多可以通过在chrome：// flags /＃touch-events禁用Chrome对内置触摸屏的支持来解决该问题。确保在Chrome更新后将其设置为已启用以解决问题。在禁用的情况下，触摸模拟的一些小方面（例如DOM0 ontouchstart = handlers）将无法正常工作。

  
  

  I am working on a mobile website at the moment and I refreshed the page, Chrome quit unexpectedly, and since then all touch screen emulation is absent and/or failing.

  Chrome Version: 36.0.1985.125 m, OS: Windows 7 Ultimate SP1

  Google Chrome suddenly and unexpectedly stopped emulating devices properly. All touch screen functionality has been disabled and apparently removed. When I emulate a device, the Sensors box fails to be checked and upon inspection, does not show any 'Emulate Touch Screen' option.

  I have tried the following, all in conjunction:

  • Uninstalling/Reinstalling Chrome and deleting all personal settings, including uninstalling all extensions, restoring all defaults, etc.
  • Restarting the computer
  • Running anti-virus software
  • EDIT: Installed Chrome Canary which produced the exact same problem

  Please let me know if there are any other relevant details that I might need to add.

  解决方案

  Sorry about this. We overhauled the touch emulation in Chrome 36 to be much more accurate (sharing code with what really happens in Chrome Android): https://plus.sandbox.google.com/+RickByers/posts/CBCmhVttj5C. In the process we ended up disabling touch emulation when real touch support was present (at the time we thought this was no big deal because if you've got a real touchscreen why would you want to fake one with mouse?). But some Windows PCs report that they have a touchscreen when in fact they don't really (Eg. Visual Studio installs a touch screen emulator I believe).

  We're fixing this at http://crbug.com/395531 - hopefully there will be a Chrome Canary build soon that re-enables touch emulation in these cases.

  In the meantime you can mostly work around the issue by disabling Chrome's support for built-in touchscreens at chrome://flags/#touch-events. Make sure you set this back to 'Enabled' after Chrome is updated to fix the issue. With this disabled, some minor aspects of touch emulation (eg. DOM0 ontouchstart= handlers) will not work properly.

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