• 改版而棄置的元件
• location 第三方套件所需要的改動
• 用到 google API Key 的地方有四個地方，分布在三個檔案

250 Adding the ‘location’ API & Starting with the ‘Geo Location Input Widget’

• widgets / location_input.dart (StatefulWidget)
• screens/add_place.dart.dart (ConsumerStatefulWidget)

251 Getting the user’s current location

利用google location api 獲取經緯度資料

• widgets/location_input.dart

252 Using the Google Maps API -Setup

• Google Maps Platform

253 Using Google’s Geocoding API

• 反向geocoding 查找 (從經緯度查找住址)
• widgets/location_input.dar

254 Storing the location Data in the Model

• models / place.dart

255 Displaying a Location Preview Map Snapshot via Google