Permissions and Device Features
Runtime permissions, Camera, Location, Sensors, Bluetooth, NFC, Telephony and device feature detection
1What is the difference between Normal and Dangerous permissions?
What is the difference between Normal and Dangerous permissions?
Risposta
Normal permissions are automatically granted at install time (e.g., INTERNET, VIBRATE). Dangerous permissions require explicit user consent at runtime since Android 6.0 (e.g., CAMERA, LOCATION) because they affect privacy.
2How to request a runtime permission in Android?
How to request a runtime permission in Android?
Risposta
First check with checkSelfPermission(), then request with requestPermissions() or the modern Permission Launcher (registerForActivityResult). Handle the response in onRequestPermissionsResult() or in the launcher callback.
3What is ActivityCompat.checkSelfPermission() used for?
What is ActivityCompat.checkSelfPermission() used for?
Risposta
The checkSelfPermission() method checks whether a permission is currently granted. It returns PERMISSION_GRANTED if granted, PERMISSION_DENIED otherwise. Always check before using a permission‑protected feature.
What are permission groups?
What is shouldShowRequestPermissionRationale() used for?
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Altri argomenti di colloquio Android
Android Fundamentals
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Kotlin Language Essentials for Android
Room Database
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Jetpack Compose
Firebase for Android
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Advanced Android Networking
Kotlin Collections and Operators
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Android Dependency Injection
Android MVI Architecture
Android Clean Architecture
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Android Performance and Monitoring
Android Security and Privacy
Android CI/CD and Release
Android UX and Form Factors
Android Testing Advanced
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