Develop your own Swift Framework

Overview

Developing your own swift framework has below benefits.

Reusable code
Secure or Hide your code
Reduce recompilation
Reduce recompilation
Save time

Tool Used: Xcode 8.3.2, Swift 3+

To create your own framework in swift you just have to follow below 5 steps.

Topics

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Step 1: Setup Framework Project

Create new Xcode project.

Click on ‘Cocoa Touch Framework’.

Write a name of your project, we have used ‘YudizFramework’. (Make sure to choose swift language) and Click on Next button.

Add new file inside ‘YudizFramework’ folder. (Press ⌘ + N or Click on File -> New -> File…)

Click on ‘Cocoa Touch Class’.

Write File Name ‘YudizFramework’ and Subclass of ‘NSObject’.

Step 2: Write some code

Write following code inside ‘YudizFramework.swift’

open class YudizFramework: NSObject {

    open class func logToConsole(_ msg: String) {
        print(msg);
    }
}

Note:- Make sure your class and method are open.

Step 3: To create Universal Framework

Add new ‘Aggregate’ target to your project.

And Add below script in ‘Run Script’ to it.

#!/bin/sh

UNIVERSAL_OUTPUTFOLDER=${BUILD_DIR}/${CONFIGURATION}-universal

# make sure the output directory exists
mkdir -p "${UNIVERSAL_OUTPUTFOLDER}"

# Step 1. Build Device and Simulator versions
xcodebuild -target "${PROJECT_NAME}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos  BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
xcodebuild -target "${PROJECT_NAME}" -configuration ${CONFIGURATION} -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build

# Step 2. Copy the framework structure (from iphoneos build) to the universal folder
cp -R "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PROJECT_NAME}.framework" "${UNIVERSAL_OUTPUTFOLDER}/"

# Step 3. Copy Swift modules from iphonesimulator build (if it exists) to the copied framework directory
SIMULATOR_SWIFT_MODULES_DIR="${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PROJECT_NAME}.framework/Modules/${PROJECT_NAME}.swiftmodule/."
if [ -d "${SIMULATOR_SWIFT_MODULES_DIR}" ]; then
cp -R "${SIMULATOR_SWIFT_MODULES_DIR}" "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework/Modules/${PROJECT_NAME}.swiftmodule"
fi

# Step 4. Create universal binary file using lipo and place the combined executable in the copied framework directory
lipo -create -output "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework/${PROJECT_NAME}" "${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PROJECT_NAME}.framework/${PROJECT_NAME}" "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PROJECT_NAME}.framework/${PROJECT_NAME}"

# Step 5. Convenience step to copy the framework to the project's directory
cp -R "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework" "${PROJECT_DIR}"

# Step 6. Convenience step to open the project's directory in Finder
open "${PROJECT_DIR}"

Step 4: Build your Framework

Build your Framework by choosing ‘UniversalYudizFramework’ target pressing ⌘ + B.

After build is completed, Finder opens with your Framework in that.

Step 5: Add this framework to your any of your project

import UIKit
import YudizFramework

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

      YudizFramework.logToConsole("Share it if you liked it. ")

    }

}