Question 1

What is the difference between Normal and Dangerous permissions?

Accepted Answer

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.

Question 2

How to request a runtime permission in Android?

Accepted Answer

First check with checkSelfPermission(), then request with requestPermissions() or the modern Permission Launcher (registerForActivityResult). Handle the response in onRequestPermissionsResult() or in the launcher callback.

Question 3

What is ActivityCompat.checkSelfPermission() used for?

Accepted Answer

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.

Permissions and Device Features

What is the difference between Normal and Dangerous permissions?

Câu trả lời

How to request a runtime permission in Android?

Câu trả lời

What is ActivityCompat.checkSelfPermission() used for?

Câu trả lời

What are permission groups?

What is shouldShowRequestPermissionRationale() used for?

Các chủ đề phỏng vấn Android khác

Android Fundamentals

Android UI and Resources

Android Lifecycle

Android Navigation

Android Data Management

Android Networking

Android Testing

Android Gradle

Kotlin Language Essentials for Android

Room Database

Background Work

Jetpack Compose

Firebase for Android

Android MVVM Architecture

Advanced Android Networking

Kotlin Collections and Operators

Kotlin Coroutines and Flow

Android Dependency Injection

Android MVI Architecture

Android Clean Architecture

Android Compose Advanced

Android Performance and Monitoring

Android Security and Privacy

Android CI/CD and Release

Android UX and Form Factors

Android Testing Advanced

Nắm vững Android cho lần phỏng vấn tiếp theo