mjhassan

public static void Fade (this UIView view, bool isIn, double duration = 0.3, Action onFinished = null)
{
	var minAlpha = (nfloat)0.0f;
	var maxAlpha = (nfloat)1.0f;

	view.Alpha = isIn ? minAlpha : maxAlpha;
	view.Transform = CGAffineTransform.MakeIdentity ();
	UIView.Animate (duration, 0, UIViewAnimationOptions.CurveEaseInOut,
		() => {
			view.Alpha = isIn ? maxAlpha : minAlpha;

mjhassan

#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/MobileCoreServices.h>

static UIImage *frameImage(CGSize size, CGFloat radians) {
    UIGraphicsBeginImageContextWithOptions(size, YES, 1); {
        [[UIColor whiteColor] setFill];
        UIRectFill(CGRectInfinite);
        CGContextRef gc = UIGraphicsGetCurrentContext();
        CGContextTranslateCTM(gc, size.width / 2, size.height / 2);

mjhassan

https://spring.io/blog/2015/07/14/microservices-with-spring
http://www.adeveloperdiary.com/java/spring-boot/create-restful-webservices-using-spring-boot/
https://www.infoq.com/articles/microframeworks1-spring-boot
http://stytex.de/blog/2016/02/01/spring-cloud-security-with-oauth2/
https://bitbucket.org/ikryvorotenko/microservises-demo/src

mjhassan

import UIKit

fileprivate enum Storyboard : String {
    case main = "Main" // storyboard name
}

fileprivate extension UIStoryboard {
    
    static func loadFromMain<T>(_ identifier: String) -> T {
        return load(from: .main, identifier: identifier)

mjhassan

<key>NSExceptionDomains</key>
 <dict>
      <key>localhost</key>
      <dict>
           <key>NSExceptionAllowsInsecureHTTPLoads</key>
           <true/>
      </dict>
      <key>NSAllowsArbitraryLoads</key>
      <true/>
      <key>NSAllowsArbitraryLoadsInWebContent</key>

mjhassan

"No bundle url present” Error

• Open a terminal window
• cd into YOUR_PROJECT/ios
• Remove the build folder with rm -r build
• Run react-native run-ios again

Alternatively, run

mjhassan

Overview

SOLID represents 5 principles of object-oriented programming: Single responsibility, Open-closed, Liskov Substitution, Interface Segregation and Dependency Inversion.

These principles is to solve the main problems of a bad architecture:

• Fragility: Unable to change.
• Immobility: Unable to reuse, because of tightly coupled dependencies.
• Rigidity: Single change affects several parts of the project.

Principles

mjhassan

To NSCache or not to NSCache, what is the URLCache

Almost every mobile app now-a-days rely on networking, either for JSON, image or advertisement. It's rare to find an app in the AppStore that doesn't manage data. To make the app fast and responsive sometimes app developer uses caching mechanism. Though caching is not just about improving UX by making the interface fast and responsive, it's about efficiently managing data that will be used frequently. Not to say, it will effectively strip down repetitive tasks.

There are a lot of great third-party caching libraries available. Haneke, PINCache, Cache, Awesome Cache are some of the popular third-parties out there. Even image libraries, like SDWebImage, Kingfisher or Nuke provi

mjhassan

class APIService: ServiceProtocol {
    func get( url: URL, callback: @escaping (_ data: Data?, _ error: Error?) -> Void ) {
        URLSession.shared.dataTask(with: url) { (data, _, error) in
            callback(data, error)
            }.resume()
    }
}

mjhassan

class APIService: ServiceProtocol {
    func get( url: URL, callback: @escaping (_ data: Data?, _ error: Error?) -> Void ) {
        let request = URLRequest(url: url, cachePolicy: .returnCacheDataElseLoad, timeoutInterval: 30)
        URLSession.shared.dataTask(with: request) { (data, _, error) in
            callback(data, error)
            }.resume()
    }
}