Google Maps SDK usage overview https://developers.google.com/maps/documentation/ios/start 
 
 Step by step, so you can !! 
 
 Step 1: Download the Google Maps SDK for iOS 
 
 Https://developers.google.com/maps/documentation/ios/start#getting_the_google_maps_sdk_for_ios 
 
 Step 2 get the Google Maps API Key 
 
 Https://developers.google.com/maps/documentation/ios/start#the_google_maps_api_key 
 
 Register a Google account and obtain the Key 
 
 Step 3 Add the Google Maps SDK to your iOS APP 
 
 Https://developers.google.com/maps/documentation/ios/start#adding_the_google_maps_sdk_for_ios_to_your_project 
 
 Here, because you are not familiar with XCode IDE 
 
 
 -  Replace the default valueUbunturesWitharmv7. 
-  InOther Linker FlagsSection, add-ObjC. If these settings are not visible, change the filter inBuild SettingsBar fromBasicToAll. 
 
 
 
 Add armv7 
 
 
 
 
 Add-ObjC compilation settings. 
 
 You can build the google maps sdk for your project according to the document introduction. 
 
 I still feel that I am not very familiar with using xcode. It is useless to right-click the above two places. I have been there for a long time and I don't know how to fill in the samples. Make a record here. 
 
 If the above two compilation environments are not set, the program cannot be started.