2/16/2023 0 Comments React native tabview full screen![]() It’s worth mentioning that it is also possible to include web-based image sources instead of bundling your assets with your application. This is a nice change from web development: the relatively limited possible combinations of screen size and resolution on iOS means that it’s easier to create targeted assets.įor React Native on other platforms, we can expect that the image! require syntax will point to a similar assets directory. By providing the appropriate and resolution files, you will enable Xcode to serve the correct asset file for the correct platform. On iOS, this means that you’ll need to import it into the assets folder within your Xcode project. How does that require call work? Where does this resource live? Here’s one part of React Native that you’ll have to adjust based on which platform you’re targeting. The basic usage of the component is straightforward just set the source prop: In React Native, we have a similar component, but it behaves a little differently. When writing HTML and CSS for the Web, we include images in a variety of ways: sometimes we use the tag, while at other times we apply images via CSS, such as when we use the background-image property. If text is the most basic element in an application, images are a close contender, for both mobile and for the Web. We’ll discuss this further in the next chapter. You’ve probably noticed a pattern here: React Native is very opinionated in its preference for the reuse of styled components over the reuse of styles. The Text component documentation has more details on this. You can also use this component to make more specific components like MyAppHeaderText for other kinds of text. The recommended way to use consistent fonts and sizes across your application is to create a component MyAppText that includes them and use this component across your app. ![]() You also lose the ability to set up a default font for an entire subtree. One again, Facebook recommends solving this by using styled components: Style inheritance is limited, so you lose the ability to have default font settings for all text nodes in the tree. In general, when dealing with styled text, React Native forces you to change your approach. Similarly, React Native does not inherently have any concept of header elements ( h1, h2, etc.), but it’s easy to declare your own styled elements and use them as needed. Using styled components for rendering text The quick brown fox jumped over the lazy dog. You’ll likely want to create styled components as a sort of shorthand when dealing with text, as shown in Example 4-1.Įxample 4-2. This approach could quickly become verbose. Here’s how you might achieve a similar effect by making use of inline styles: When dealing with components in React Native, you no longer have access to subtags such as and, though you can apply styles to achieve similar effects through use of attributes such as fontWeight and fontStyle. Instead, wrap your text in a component: This is OK! ![]() In React Native, only components may have plain text nodes as children. So, you might end up with an HTML snippet that looks like this: The quick brown fox jumped over the lazy dog. Furthermore, you can style them with child tags such as and. When working with text in HTML, you can include raw text strings in a variety of elements. However, text within the context of React Native and mobile development works differently from text rendering for the Web. Rendering text is a deceptively basic function nearly any application will need to render text somewhere.
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