Using the camera in your app can affect performance because it uses the device's hardware in real time. It may reduce the frame rate if your app processes camera frames heavily. Also, continuous camera use increases battery consumption and memory usage, especially if you keep the preview running or capture high-resolution photos or videos.
To keep your app smooth at 60fps, only activate the camera when needed. Stop the camera preview immediately when not in use. Avoid processing every frame unless necessary. Use lower resolution settings if high quality is not required. Also, release camera resources properly to free memory and reduce battery drain.
Adding expo-camera increases your app bundle size moderately because it includes native code for camera access. This can add a few megabytes to your app size. However, it does not significantly affect startup time unless you request camera permissions or start the camera preview immediately on launch.
On iOS, camera access requires explicit permission in the Info.plist file with a usage description string. On Android, permissions must be declared in AndroidManifest.xml and requested at runtime. iOS apps must handle privacy carefully to pass App Store review. Android devices vary more in camera hardware, so test on multiple devices for compatibility.
Info.plist (e.g., NSCameraUsageDescription).Your app takes 5 seconds to load the camera screen. What is likely wrong?
Answer: The app might be starting the camera preview or requesting permissions too early or inefficiently. Delaying camera activation until the user is ready or optimizing permission requests can reduce load time.