How do you manage app permissions dynamically in Android, especially for critical features like location?
Instruction: Explain the process of requesting and handling permissions at runtime in Android applications.
Updated
Official answer
Request only the access needed for a feature when the user chooses it. Declare required permissions, check their current grant before use, and use an Activity Result RequestPermission or RequestMultiplePermissions contract where appropriate. Register the callback through the intended lifecycle owner and handle the result asynchronously.
If an explanation is appropriate, say which feature needs access and let the user decline. Denial does not mean repeatedly reopening the dialog or blocking unrelated features. Offer manual place selection when it satisfies the task. A false shouldShowRequestPermissionRationale result alone does not prove permanent denial; it can also occur before the first request. A settings route should be an informed user action.
For location, support coarse access if sufficient. On Android 12 and later, users can choose approximate location even when precise access is requested. If precise location is necessary, request fine and coarse together and inspect the actual grants. Request background access separately only for a justified background feature, following the current OS/target flow.
Permissions can be revoked or temporary, and location services may be unavailable even with permission. Handle unavailable/stale results and protected-operation failures gracefully; a prior grant is not a permanent capability. Test denial, approximate-only, one-time access, later revocation and process recreation, without silently collecting more precision than needed.