DOM, Shadow Dom, Virtual DOM State and props What is StyleSheet.create()? StyleSheet.create() is a function that takes a plain JavaScript object and returns a StyleSheet object. Instead of creating a new style object every time, StyleSheet helps to create style objects with an ID which is further used to reference instead rendering it again. How […]
What is MVC? The MVC framework is an architectural pattern that separates an applications into three main logical components Model, View, and Controller. Hence the abbreviation MVC. The full form MVC is Model View Controller. In this architecture, a component is built to handle specific development aspects of an application. MVC separates the business logic […]
Install cocoapods with gem not with Homebrew
|
1 |
sudo gem install cocoapods |
but first find stable version of gem and ruby if already installed then update gem
|
1 |
gem update --system |
Install Ruby via RVM 1. Install RVM as per instructions or
|
1 |
curl -L https://get.rvm.io | bash -s -- --version latest |
then
|
1 |
source ~/.rvm/scripts/rvm |
|
1 |
type rvm | head -n 1 |
If the output is: rvm is a function You may need to add “source ~/.rvm/scripts/rvm” to your ~/.bash_profile […]
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 […]
To get the list of available emulator
|
1 |
emulator -list-avds |
To open a emulator
|
1 |
emulator -avd Pixel_API_30 |
Listing all available simulators
|
1 |
xcrun simctl list |
open -a Simulator
|
1 2 3 |
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
|
1 2 3 4 5 |
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
|
1 |
npm start -- --reset-cache |
Update Dependency
|
1 2 3 |
npm i -g npm-check-updates ncu -u npm install |
|
1 |
react-native unlink react-native-gesture-handler --platforms ios |
1. Clear watchman watches: watchman watch-del-all. 2. Delete the […]
|
1 2 3 4 5 6 7 |
extension UICollectionView { func deselectAllItems(animated: Bool) { guard let selectedItems = indexPathsForSelectedItems else { return } for indexPath in selectedItems { deselectItem(at: indexPath, animated: animated) } } } |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 |
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1) public static Bitmap blurRenderScript(Context context, Bitmap srcBitmap, int radius) { Bitmap bitmap = Bitmap.createBitmap( srcBitmap.getWidth(), srcBitmap.getHeight(), Bitmap.Config.ARGB_8888); RenderScript renderScript = RenderScript.create(context); Allocation blurInput = Allocation.createFromBitmap(renderScript, srcBitmap); Allocation blurOutput = Allocation.createFromBitmap(renderScript, bitmap); ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript)); blur.setInput(blurInput); blur.setRadius(radius); // radius must be 0 < r <= 25 blur.forEach(blurOutput); blurOutput.copyTo(bitmap); renderScript.destroy(); return bitmap; } |
|
1 2 3 4 5 6 7 8 9 10 11 12 |
public static void copy(File src, File dst) throws IOException { try (InputStream in = new FileInputStream(src)) { try (OutputStream out = new FileOutputStream(dst)) { // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } } } } |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
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
|
1 2 3 4 5 |
<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> |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 |
// // 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 } } } |