系统: Mac OS 10.14.6， XCode 11，swift 4.2
写作时间：2019-10-08
开启Accessibility的快捷方式-3次home键
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打开Settings app，在iPhone 或者 iPad.
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点击通用General(iOS 13不用这一步) > Accessibility.
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点击快捷方式Accessibility Shortcut — 一般在最下面.
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开启快捷方式，当你点击3次Home键或者侧边按钮。(笔者选择VoiceOver)。再次点击3次Home键或者侧边按钮则关闭Accessibility。如此循环…
下面是对Accessibility选项的描述: -
AssistiveTouch: Adds the ability to access many common hardware buttons and gesture controls with single taps. A useful feature for those with motor impairments
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Classic Invert Colors: A great option for anyone with a visual impairment such as color blindness. All colors across iOS will be inverted
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Color Filters: Changes the color layout of the screen for those with color blindness
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Magnifier: Triggers a camera style viewfinder with sharp zoom controls so you can see small text
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Reduce White Point: Reduces the intensity of bright colors for those with sensitivities or color blindness
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Smart Invert Colors: Same as Classic Invert Colors, except it doesn’t change photos, media, and some apps
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Switch Control: Lets you use external switches, or the screen itself, as a switch for motor accessibility
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VoiceOver: Allows your iPhone or iPad to speak to you when enabled. Commonly used by folks with visual impairments
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Zoom: Allows you to zoom the Home screen and all other content for better visibility. You can then use two and three finger gestures to tap and pan around
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Guided Access: When you’re in an app, it keeps the iPhone in a single app and allows you to control which features are available
参考
https://www.imore.com/how-use-and-customize-accessibility-shortcut-iphone-and-ipad