how to avoid weirdly animated Text() on app launch in a SwiftUI view?

To avoid weirdly animated Text() on app launch in a SwiftUI view, you can use the new TextRenderer API introduced in iOS 18 and aligned releases. This API allows you to customize how SwiftUI text is drawn for an entire view tree, enabling more controlled and expressive animations.

Here are some steps and tips based on the session "Create custom visual effects with SwiftUI":

1. Use TextRenderer for Custom Animations:

   • The TextRenderer protocol allows you to access individual components of the text, such as lines, runs, and glyphs, and animate them individually.
   • You can create a custom text renderer by implementing the drawLayout method, which gives you control over how each part of the text is drawn and animated.

2. Implement Custom Transitions:

   • By breaking a view into smaller components that animate individually, you can build more expressive animations and visual effects.
   • For example, you can animate text line by line or glyph by glyph to create smoother transitions.

3. Avoid Jitter with Subpixel Quantization:

   • When animating text, you can avoid jitter by opting out of subpixel quantization using the drawOptions method.

4. Override Default Animations:

   • Ensure even pacing for animations by overriding the default animation when appropriate, especially if the transition was triggered from a call to withAnimation.

For a detailed explanation and example, you can refer to the session "Create custom visual effects with SwiftUI" at the Text transitions chapter.

By following these guidelines, you can create smooth and visually appealing text animations in your SwiftUI app.