iOS App Screenshot Sizes Apple App Store
App Store Screenshot Sizes for iOS Devices The next important aspect of designing iOS screenshots is adhering to the Apple device sizes. The tables below outlines which sizes are required and the corresponding pixels for portrait and landscape orientation. iOS App Screenshot Sizes for iPhones Device Size Device Portrait Screenshot Size Landscape Screenshot Size Requirement 6.5 […]
React-Native Common Commands
To get the list of available emulator
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emulator -list-avds |
To open a emulator
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emulator -avd Pixel_API_30 |
Listing all available simulators
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xcrun simctl list |
open -a Simulator
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react-native run-ios --simulator="iPhone 4s" react-native run-ios --simulator="iPhone Xʀ" react-native run-ios --simulator="iPhone 6" |
Print log on Terminal
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react-native log-android react-native log-ios react-native run-ios --device "Anshul’s iPhone" |
React Devtools https://github.com/facebook/react-devtools/tree/master/packages/react-devtools Reset Cache
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npm start -- --reset-cache |
Update Dependency
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npm i -g npm-check-updates ncu -u npm install |
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react-native unlink react-native-gesture-handler --platforms ios |
1. Clear watchman watches: watchman watch-del-all. 2. Delete the […]
UICollectionView deselect all cell
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extension UICollectionView { func deselectAllItems(animated: Bool) { guard let selectedItems = indexPathsForSelectedItems else { return } for indexPath in selectedItems { deselectItem(at: indexPath, animated: animated) } } } |
iOS: Swift location tracking
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extension ViewController: CLLocationManagerDelegate { func determineMyCurrentLocation() { var locationManager: CLLocationManager = CLLocationManager() locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestAlwaysAuthorization() if CLLocationManager.locationServicesEnabled() { locationManager.startUpdatingLocation() //locationManager.startUpdatingHeading() } } func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { var userLocation: CLLocation = locations[0] as CLLocation // Call stopUpdatingLocation() to stop listening for location updates, // other wise this function will be called every time when user location changes. // manager.stopUpdatingLocation() // print("user latitude = \(userLocation?.coordinate.latitude)") // print("user longitude = \(userLocation?.coordinate.longitude)") } func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) { print("Error \(error)") } } |
Add into info.plist
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<key>NSLocationAlwaysUsageDescription</key> <string>Will you allow this app to always know your location?</string> <key>NSLocationWhenInUseUsageDescription</key> <string>Do you allow this app to know your current location?</string> |
iOS: Swift change color of placeholder in iOS 13
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// // SSTextField.swift // // // Created by Shubham Sharma on 17/01/20. // Copyright © 2020 Shubham Sharma. All rights reserved. // import UIKit @IBDesignable @objc open class SSTextField: UITextField { /// Change placeholder color. @IBInspectable open var placeHolderColor : UIColor = UIColor.lightGray { didSet { self.initialize() } } // MARK:- Loading From NIB override open func awakeFromNib() { super.awakeFromNib() self.initialize() } // MARK:- Intialization override public init(frame: CGRect) { super.init(frame: frame) self.initialize() } required public init(coder aDecoder: NSCoder) { super.init(coder: aDecoder)! self.initialize() } //MARK:- ACFLoating Initialzation. func initialize() -> Void { let iVar = class_getInstanceVariable(UITextField.self, "_placeholderLabel")! if let placeholderLabel = object_getIvar(self, iVar) as? UILabel { placeholderLabel.textColor = placeHolderColor } } } |
iOS: Swift basic Extensions
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import Foundation import UIKit extension UIColor { static let AppDustyOrange:UIColor = UIColor(named: "AppDustyOrange")! static let AppDenimBlue:UIColor = UIColor(named: "AppDenimBlue")! static let AppBrownishGrey:UIColor = UIColor(named: "AppBrownishGrey")! } extension NSNotification.Name { static let UpdateUserProfile:NSNotification.Name = NSNotification.Name.init("UpdateUserProfile") static let UpdatePost:NSNotification.Name = NSNotification.Name.init("UpdatePost") static let UpdateCommentCount:NSNotification.Name = NSNotification.Name.init("UpdateCommentCount") static let RecevedPushNotification:NSNotification.Name = NSNotification.Name.init("RecevedPushNotification") } extension UIFont { static func appFont(size: CGFloat, weight: UIFont.Weight = .regular) -> UIFont { switch weight { case UIFont.Weight.bold: return UIFont(name: "Roboto-Bold", size: size) ?? UIFont.systemFont(ofSize: size, weight: weight) case UIFont.Weight.light: return UIFont(name: "Roboto-Light", size: size) ?? UIFont.systemFont(ofSize: size, weight: weight) case UIFont.Weight.regular: return UIFont(name: "Roboto", size: size) ?? UIFont.systemFont(ofSize: size, weight: weight) default: return UIFont(name: "Roboto", size: size) ?? UIFont.systemFont(ofSize: size, weight: weight) } } } |
iOS: Swift listen JavaScript function
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// // WebViewScriptViewController.swift // UpgradeMySelf-ios // // Created by Shubham Sharma on 20/01/20. // Copyright © 2020 Shubham Sharma. All rights reserved. // import UIKit import WebKit class WebViewScriptViewController: UIViewController, WKNavigationDelegate { @IBOutlet weak var webView: WKWebView! private var webViewContentIsLoaded = false var __url: String = "https://www.google.com/" override func viewDidLoad() { super.viewDidLoad() webView.configuration.userContentController.add(self, name: "paymentResponse") webView.scrollView.bounces = false webView.navigationDelegate = self if !webViewContentIsLoaded { let url = URL(string: __url)! let request = URLRequest(url: url) webView.load(request) webViewContentIsLoaded = true } } private func evaluateJavascript(_ javascript: String, sourceURL: String? = nil, completion: ((_ error: String?) -> Void)? = nil) { var javascript = javascript // Adding a sourceURL comment makes the javascript source visible when debugging the simulator via Safari in Mac OS if let sourceURL = sourceURL { javascript = "//# sourceURL=\(sourceURL).js\n" + javascript } webView.evaluateJavaScript(javascript) { _, error in completion?(error?.localizedDescription) } } // MARK: - WKNavigationDelegate func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) { // This must be valid javascript! Critically don't forget to terminate statements with either a newline or semicolon! let javascript = "var message = {\"Status\": \"SUCCESS\", \"transactionId\": \"#PAY123133\" }\n" + "window.webkit.messageHandlers.paymentResponse.postMessage(message)\n" evaluateJavascript(javascript, sourceURL: nil) } func showAlertWithMessage(title: String, message:String ) { let alert = UIAlertController.init(title: title , message:message , preferredStyle:.alert) let action = UIAlertAction.init(title: "OK", style: .cancel) { (action) in } alert.addAction(action) self.present(alert, animated:true, completion: nil) } } extension WebViewScriptViewController: WKScriptMessageHandler { // MARK: - WKScriptMessageHandler func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { print(message.body) guard let body = message.body as? [String: Any] else { print("could not convert message body to dictionary: \(message.body)") showAlertWithMessage(title: "Payment Declined", message: "" ) return } guard let status = body["Status"] as? String else { print("could not convert Status to string: \(body)") showAlertWithMessage(title: "Payment Declined", message: "" ) return } switch status { case "FAILED": showAlertWithMessage(title: "Payment Declined", message: "") print("Transaction Failed") break case "SUCCESS": guard let transactionId = body["transactionId"] as? String else { print("could not transactionId to string: \(body)") return } print("outerHTML is \(transactionId)") showAlertWithMessage(title: "Payment Declined", message: "Transaction Id \(transactionId)" ) break default: print("unknown message type \(status)") return } } } |
Swift: Add attributed string in iOS
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let attributsBold = [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 13.0, weight: .bold), NSAttributedString.Key.foregroundColor: UIColor.AppPrimaryColor] let attributsNormal = [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 13.0, weight: .regular), NSAttributedString.Key.foregroundColor: UIColor.AppSlate] let attributedString = NSMutableAttributedString(string: "Bold Text", attributes:attributsBold) let boldStringPart = NSMutableAttributedString(string: "Regular Text", attributes:attributsNormal) attributedString.append(boldStringPart) UITextViewObject.attributedText = attributedString |