You can animate, character-by-character, the appearance of text, so it looks like a streaming typing effect, similar to what a typewriter would produce.
Version compatibility
This implementation requires that your project minSDK be set to API level 21 or higher.
Dependencies
Animate text character-by-character
This code animates text character-by-character. It tracks an index to control how much of the text is revealed. The displayed text updates dynamically to show only the characters up to the current index. Finally, the variable runs the animation when it changes.
Key points about the code
BreakIteratorcorrectly iterates over characters regardless of how they are stored. For example, animated emojis are made up of multiple characters;BreakIteratorensures that they're handled as a single character, so that the animation isn't broken.LaunchedEffectstarts a coroutine to introduce the delay between the characters. You can replace the code block with a click listener–or any other event–to trigger animation.- The
Textcomposable re-renders every time the value ofsubstringTextis updated.
Results
Parent collections
Display text
Text is a central piece of any UI. Find out different ways
you can present text in your app to provide a delightful user experience.
Compose basics (video collection)
This series of videos introduces various Compose APIs,
quickly showing you what’s available and how to use them.
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