In Swift, inout is a keyword used to indicate that a parameter is passed by reference and can be modified inside a function, affecting the original value outside the function. This allows a function to modify the value of the parameter and have those changes reflected in the calling scope. Here’s an example to illustrate… Read More »
In iOS development with Swift, self and Self have distinct meanings and use cases. In the printValue method, self is used to explicitly refer to the value property of the current instance. 2. Self: In this example, Self is used as the return type of the createInstance method. It indicates that the method will return… Read More »
In SwiftUI, navigation is typically handled using the NavigationView and related components. Here’s a basic guide on how to perform navigation in SwiftUI: Basic Navigation with NavigationLink: 2. Creating NavigationLinks: 3. Creating the Destination View: 4. Putting it All Together: Passing Data with NavigationLink: 2. Receiving Data in Destination View:In the destination view, define a… Read More »
UIKit and SwiftUI are both UI frameworks used in iOS development, but they differ significantly in terms of design, architecture, and development approach. Here are some key differences between UIKit and SwiftUI: 1. Declarative vs Imperative 2. UI Layout 3. Code re-usability 4. Live preview 5. UI Representation 6. State management 7. Adoption and Legacy… Read More »
In SwiftUI, you can pass data from one view to another using the @State, @Binding, @ObservedObject, or @EnvironmentObject property wrappers. The appropriate choice depends on the nature of the data and the relationship between the views. Below are brief explanations and examples for each approach: 1. @State : Use @State to store simple values within… Read More »
To set up auto layout for a username field, password field, login button, and forgot credential button programmatically in Swift, you can use the NSLayoutConstraint class to define the relationships between these UI elements. Here’s an example of how you can do this: This example creates and configures UITextField and UIButton instances, adds them to… Read More »
Given a string of digits, generate all possible valid IP address combinations. IP addresses must follow the format A.B.C.D, where A, B, C, and D are numbers between 0 and 255. Zero-prefixed numbers, such as 01 and 065, are not allowed, except for 0 itself. For example, given “2542540123”, you should return [‘254.25.40.123’, ‘254.254.0.123’]. To… Read More »
Theme extensions were introduced in Flutter 3. But what are Theme Extensions? As the name says, it helps to extend the inbuilt themes with our own extensions. Let’s jump into an example So when you create a flutter app, your basic root widget will look like this return MaterialApp( title: ‘Flutter Theme Extensions’, theme: ThemeData(… Read More »
In this article we will see how to use a nice plugin called FlushBox in Flutter. Watch Video Tutorial First thing to do is to add dependencies. Add Dependencies Go to your pubspec.yaml file and add the below dependency. Once done that run ‘flutter packages get’ in the terminal to download the packages to be… Read More »
Lets start with iOS Watch Video Tutorial iOS Go to the flutter project folder and open the iOS folder. You will see the runner.xcodeworkspace file. Open the file in Xcode. Now if you select the root folder and select the target and go the General Tab, Here just towards the bottom you will see an… Read More »
This is a simple demo showing how you can animate views in flutter using very little code. Watch Video Tutorial Here is the simple code in which I am showing all basic functions in different different functions. You can call these methods in the build method and execute all.
Watch Video Tutorial This demo shows how to upload files to firebase Storage. For this demo we will upload only images to firebase Storage. Also I am doing any sign in to Google, this is completely anonymous. Let’s start… Add Dependencies we need three plugins for this example #1 Multiple File Picker This… Read More »
Here is a simple example of using Gradient in Flutter. Here we are just showing a demo of how to use LinearGradient in Flutter. You can even use the RadialGradient or SweepGradient in the similar way. Watch Video Tutorial Here is the complete example of setting a LinearGradient in a Container. Please leave your… Read More »
Hello, Stepper is an awesome widget in Flutter. It makes developers job easy by writing less code. Here we will have a UI as shown in the below screenshot. First we will create a list of 3 Steps. Each Step will have a ‘title‘, ‘content‘ and isActive property. ‘content‘ can be… Read More »
Hi This article helps you to do complex Json Parsing in Flutter or dart. Watch Video Tutorial Simple JSON I have the following json in a file named “person.json” in a folder named “json” in root of my project. To parse this json, we will create a model class named “Person”. The “fromJson” method creates… Read More »
Hello friends, In this article, I will show you how you can create custom widgets in Flutter using Widget Composition. As you know Flutter is cross Platform, so this is gonna work for both Android and iOS. Watch Video Tutorial Let’s start now. I am going to create a custom button just like… Read More »
This issue happens in react-native-firebase for a various reasons. First thing you have to do is check Firebase/Core is in your pods. Try Cleaning and rebuilding your project. Click on the target you are running in xcode and check the frameworks section in ‘General’ Tab -> Check you have linked libFirebase.a there. If not click… Read More »
Lets see how we can test Flutter Apps. It would be easy if we continue from the previous example…
1. Desktop browser testing Testing your app in a browser is as simple as running the serve command in your project’s root folder. 2. Simulator testing You can also test right in the simulator using the cordova commands from the previous chapter. For example, to test in the iOS simulator, run: Substitute ios with android… Read More »
There are two errors like this that often happens with the Xcode. If it is a “directory not found for option ‘-L/…” error, that means it’s a Library Error, then Follow the below steps… Click on your project (targets) Click on Build Settings, Search for “Library Search Paths” Under Library Search Paths, delete the paths… Read More »
Like Google Sign-In for Android, you will need a configuration file. Go to the below link and create a configuration file be giving your ios-bundle identifier. [https://developers.google.com/identity/sign-in/ios/start] Here I will be explain with the help of CocoaPods for integrating the Google SignIn SDK with the app. So first you need to install CocoaPods. For that… Read More »
This example shows how to Open Camera, Take Photo, Save it, Load it in iOS. Before this make sure that you have two buttons and one imageview in the Interface (image above) and link them to appropriate actions and variables ViewController.h” ViewController.m
Hi all, In today’s tutorial we will study how we can customize a UITableView using “Prototype Cells” in iOS which was introduced in XCode 5.0. First Create a new Project and Name it “CustomTBLView”. Now you will get the Main.storyBoard file with other ViewController and Delegate Files. Open Main.storyBoard and “Drag” a TableView on to… Read More »
Hi All, In Todays article we will see how we can handle files in Objective C. The list of the methods used for accessing and manipulating files are listed below. Here you have to replace the FilePath1, FilePath2 and FilePath strings to our required full file paths to get the desired action. Comparing two file… Read More »