flutter pub add proximity_sensor根據套件公開資料產生的選型評估，僅供參考。
proximity_sensor 套件是一個輕量級的 Flutter 插件，旨在簡化在 Android 和 iOS 設備上存取設備接近感應器的操作。它讓應用程式能夠偵測物體是否靠近裝置，常見用於通話期間自動關閉螢幕等功能。該套件提供一個簡單直覺的 API，設定簡單，非常適合希望實現基本接近偵測而不需額外複雜性的開發者。它支援兩大主要行動平台，並能順暢整合至現有的 Flutter 專案中。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
https://pub.dev/packages/proximity_sensor
simple and easy to use flutter plugin package for proximity sensor (only)
In the pubspec.yaml of your flutter project, add the following dependency:
dependencies:
...
proximity_sensor:
In your library add the following import:
import 'package:proximity_sensor/proximity_sensor.dart';
Android 12 and higher are required to specify an explicit value for android:exported
This is an example.
<activity
android:exported="true"
....
(Android only)
WAKE_LOCK permission is needed if you run setProximityScreenOff(true) before listening to events
Add below permission in your AndroidManifest.xml file.
<uses-permission android:name="android.permission.WAKE_LOCK"/>
Some recent devices use virtual proximity sensors. There are no physical sensors. I found it hard to trust the sensor information in this case.