How to let users zoom a navigation map without breaking route guidance

A developer building a field navigation feature in a React Native/Expo app discovered that combining native followsUserLocation with repeated animateCamera calls gave users no control over the map zoom, as each GPS update snapped the camera back to a fixed position. The fix involved separating camera state from navigation state, introducing a local boolean that switches the map between follow mode and explore mode when the user touches the screen. Core navigation functions — position tracking, bearing, off-route detection, and route recalculation — continue running regardless of camera mode. A clearly visible recenter button lets users resume automatic camera following with a single tap. The key architectural takeaway is that suspending camera animations should never interrupt the underlying trip logic.