When should you use Permissions in Android in Android development?

In Android development, permissions are essential for accessing sensitive data and device features. You should use permissions when your app requires specific access that affects user privacy or device functionality. Examples of such permissions include accessing contacts, location services, camera, microphone, and external storage.

Starting from Android 6.0 (API level 23), users are prompted to grant permissions at runtime, meaning you need to explicitly request permissions while the app is running, rather than just declaring them in the manifest file.

Here are some scenarios where you should consider using permissions:

• Accessing User Data: If your app needs to read or modify user contacts or calendar events, you'll need the appropriate permissions.
• Location Access: If your app provides location-based services, you'll require location permissions.
• Camera or Microphone Access: If your app needs to record audio or capture images, you must request permissions for these features.
• Storing Data: If your app needs to save files on the user's device or read from external storage, such permissions are necessary.

Always ensure to handle permissions carefully to enhance user trust and comply with Android's guidelines.