Google Objective-C Client Api Xcode Integration for iOS Tutorial

Hi there,

I have been working on the google's new client library for objective-C. I find it quite difficult to integrate it first in my project. But somehow I successfully integrated and thought if I make a tutorial on how to integrate someone out there might save time. :)

So here is it.

Written by Google, this library is a flexible and efficient Objective-C framework for accessing JSON APIs for iOS applications. The library is compatible with applications built for iOS 3 or above. More information on library is here.

Step 1

First thing to do is check out the GTL library project from here.

Step 2

Now go to the directory where you have checked out project and from source folder open GTL.xcodeproj in Xcode.

Now select GTLTouchStaticLib as your active scheme and build the project. (command+B)

Step 3

After you have compiled and build, goto Organiser->Projects->GTL and click on the little arrow for Derived  Data. 

You will find libGTLTouchStaticLib.a file and Headers folder in derived data's project folder->Build->Products->Debug-iphoneos

The static library file should be dragged into your application(in which you want to integrate google client library) project's Build Phases "Link Binary with Libraries" list.

Also do not forget to add SystemConfiguration and Security framework in your project.

Step 4

Next, add the ObjC link options to the application target's build settings, along with the all_load flag

Other Linker Flags: -ObjC -all_load

Step 5

Drag the folder with the class files for the services from GTL project folder needed by your application, such as Tasks or Books, directly into your project.

Application classes using the library should include the header for each specific service, such as

#import "GTLTasks.h"

Step 6

Write the code for your application. Happy Coding :)