Why runtime permissions protect user privacy in Android Kotlin - Publishing Best Practices

Build & Publish - Why runtime permissions protect user privacy

Performance Impact

Requesting runtime permissions has minimal impact on app performance. It does not affect frame rate or memory usage significantly because permission dialogs are managed by the system outside your app's main UI thread. However, handling permissions properly avoids unnecessary background work, which can save battery and improve responsiveness.

Optimization Tips

To keep your app smooth at 60fps, request permissions only when needed, not at app start. This avoids blocking UI with dialogs. Use asynchronous callbacks to handle user responses without freezing the UI. Cache granted permissions to skip repeated checks and reduce delays.

App Size and Startup Time

Runtime permissions do not add to your app's bundle size because the permission UI is provided by the Android system. Asking for permissions at runtime can improve startup time by delaying permission requests until necessary, so your app launches faster without waiting for user input.

iOS vs Android Differences

Android uses runtime permissions starting from Android 6.0 (Marshmallow), requiring apps to ask users for sensitive permissions while running. iOS also requests permissions at runtime but uses different APIs and permission categories. Android permissions are grouped and can be denied permanently, while iOS allows users to change permissions anytime in settings. Both platforms protect user privacy by giving control over sensitive data access.

Store Review Guidelines

• Google Play: Apps must request only necessary permissions and explain why in the UI or privacy policy.
• Apple App Store: Apps must provide usage descriptions for permissions in Info.plist and respect user choices.
• Both stores reject apps that request excessive or unrelated permissions.
• Always follow the principle of least privilege to protect user privacy and pass store reviews.

Self-Check Question

Your app takes 5 seconds to load this screen. What's likely wrong?

• You might be requesting multiple runtime permissions at app start, causing delays waiting for user input.
• Or your app is doing heavy work before checking if permissions are granted, blocking the UI thread.
• Optimize by requesting permissions only when needed and handling responses asynchronously.

Key Result

Runtime permissions protect user privacy by letting users control access to sensitive data during app use. Proper handling ensures smooth UI, faster startup, and compliance with store rules.