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Blockstack
Example
Javascript
Tools/Blockstack-webapp
.gitignore
.travis.yml
Blockstack.podspec
LICENSE
README.md
_Pods.xcodeproj

README.md

Blockstack iOS SDK

Version License Platform

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

iOS 11.0+

Installation

Blockstack is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'Blockstack'

Setup

Step 1 - Choose a custom protocol handler

You'll need to choose a custom protocol handler that is unique to your app.

This is so that your app's web-based authentication redirect endpoint can redirect the user back to your iOS app.

In this example, we use myblockstackapp://.

Register your URL scheme in Xcode from the info tab of your project settings.

Step 2 - Create redirect endpoint on web app

Blockstack apps are identified by their domain names. You'll need to create an endpoint on the web version of your app that redirects users back to your mobile app.

The endpoint will receive a get request with the query parameter authResponse=XXXX and should redirect the browser to myblockstackapp://XXXX.

See the example in the example web app in this repository.

You can run the example webapp to test out redirects by running npm install && npm start from the webapp directory

Usage

Import the Blockstack framework.

import Blockstack

Sign in using Blockstack authentication

In this example, your web app would be located at http://localhost:8080

Blockstack.sharedInstance().signIn(redirectURI: "http://localhost:8080/redirect.html",
                                   appDomain: URL(string: "http://localhost:8080")!) { authResult in
    switch authResult {
        case .success(let userData):
            print("sign in success")
            self.handleSignInSuccess(userData: userData)
        case .cancelled:
            print("sign in cancelled")
        case .failed(let error):
            print("sign in failed")
            print(error!)
    }
    
}

Check if user is currently signed in

if (Blockstack.sharedInstance().isSignedIn()) {
    print("currently signed in")
} else {
    print("not signed in")
}

Sign out

Blockstack.sharedInstance().signOut()

Retrieve user profile data

let retrievedUserData = Blockstack.sharedInstance().loadUserData()
print(retrievedUserData?.profile?.name as Any)

Storage

Store data as json on Gaia

Blockstack.sharedInstance().putFile(path: "myFile.json", content: content) { (publicURL, error) in
    if (error != nil) {
        print("put file error")
    } else {
        print("put file success \(publicURL!)")
    }
}

Read json data from Gaia

Blockstack.sharedInstance().getFile(path: "myFile.json", completion: { (response, error) in
    if (error != nil) {
        print("get file error")
    } else {
        print("get file success")
        print(response as Any)
    }
})

Author

Blockstack PBC