There isn’t much that is required to support the built-in system scaling.Īs we saw above in the default content category size, the text styles are scaled at different sizes. Notice how we didn’t set a custom font on the label but instead relied on the system font. It has no effect on custom fonts set in Interface Builder. In Interface Builder, the Dynamic Type option to automatically adjust fonts applies only to text styles or scaled fonts returned by UIFontMetrics. There’s also an option to set the “automatically adjusts font” flag in Interface Builder. We made an Xcode project with all of the examples shown in this post. Luckily, in order to support Dynamic Type with system fonts, all we need are a few lines: The “Larger Text” setting below is in Accessibility → Display & Text Size → Larger Text. Next, let’s take a look at the Dynamic Type settings in iOS Settings, which can be found either under Accessibility or Display & Brightness. Weight, size, and leading values for each text style at the default Dynamic Type size from Apple’s Human Interface Guidelines on Typography. The text style will determine the scale factor needed to support Dynamic Type. This provides great support for every reader, but what if you want to provide extended scaling? What occurs behind the scenes, and what caveats (if any) are presented? You’re probably here because you need to support Dynamic Type or possibly build your own font scaling system, and we can help you.įirst, let’s take a look at the weight, size, and leading values for each text style in the default content category size (Large). Most content-driven apps support this feature seamlessly. Since iOS 7, Apple has provided users with the ability to adjust the size of displayed content in your apps. Apps that support Dynamic Type also provide a more consistent reading experience. It also accommodates those who can read smaller text, allowing more information to appear on the screen. It helps users who need larger text for better readability. The Dynamic Type feature allows users to choose the size of textual content displayed on the screen.
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