51CTO HarmonyOS Developer Community

Apr 30, 2026 · Mobile Development

HarmonyOS Pen Kit: Integrating Stylus Squeeze, Double-Tap & Color Picker

This tutorial demonstrates complete integration of HarmonyOS Pen Kit's stylusInteraction module for squeeze and double-tap events, and imageFeaturePicker for color picking, covering callback reference management, lifecycle-aware registration with try-catch protection, event object fields, and UI feedback patterns including status visualization, counters, and toast notifications.