robinhood/ticker
4,381 estrellas·464 forks·Java·Apache-2.0·2 vistasmedium.com/robinhood-engineering/hello-ticker-20eaf6e51689↗
Ticker
Ticker es un componente de UI personalizado para Android que implementa animaciones de caracteres rodantes para simular pantallas de odómetro mecánicas. Proporciona una vista de texto con desplazamiento diseñada para animar transiciones entre diferentes cadenas de texto utilizando movimiento vertical.
El componente utiliza un bucle de dibujo personalizado y un mapeo de secuencias de arrays de caracteres para controlar la trayectoria de desplazamiento vertical. Soporta rutas de animación envolventes para crear bucles continuos e incluye mecanismos para manejar desplazamientos de traslación al transicionar entre cadenas de longitudes variables.
Features
- Odometer-Style Animations - Implements a rolling wheel effect to simulate a mechanical odometer during text changes.
- Android UI Components - Provides a reusable Android UI component designed to display dynamic text with smooth animations.
- Custom Android Views - Provides a specialized UI component built by extending the Android View class for custom animation behavior.
- Scrolling Text Views - Ships a custom Android view that animates text changes using vertical odometer-style scrolling.
- Drawing Implementation - Overrides standard drawing methods to manually render character slices based on animation progress.
- Text Content Transitions - Implements smooth scrolling visual effects for transitioning between different text values.
- Vertical Scrolling Text Transitions - Shifts characters vertically to transition between strings of varying lengths using odometer-style motion.
- Character Sequence Definitions - Allows defining a custom character array to dictate the specific order of characters appearing during transitions.
- Wrapped Animation Paths - Uses modular arithmetic to create seamless loops for short character transition sequences.
- Text Motion Animations - Designs specialized visual movements for text elements using specific character sequences.
- Character Transition Sequences - Implements a character-array sequence mapping to control the vertical scrolling path during text transitions.
- Dynamic Text Width Adjustments - Adjusts translation offsets to maintain smooth visual transitions between strings of varying lengths.
- Text Components - Scrolling text display component.
