In today’s digital age, a corporate website is vital for To B marketing, enabling lead generation, automation, and conversion through targeted content and SEO.In the current economic downturn, more and more To C businesses are shifting their focus to the B side, and traditional ···
In today’s saturated mobile internet market, businesses face the challenge of oversupply and fragmented traffic. Cognitive marketing offers a fresh growth strategy by focusing on value innovation, customer orientation, and cognitive restructuring. This article explores the key d···
Discover how marketing automation can transform your business by streamlining customer acquisition, boosting retention, and enhancing user engagement. Explore key strategies and insights to optimize each stage of the customer journey with precision and efficiency.This is an intro···
Feeling overwhelmed by scattered tasks and unclear priorities at work? Discover how to regain control with the Eisenhower Matrix and expectation alignment techniques. Learn how to prioritize effectively and navigate the demands of a busy workplace!Today, I want to introduce a sim···
Learn how to switch your Google Play account’s region without a valid payment method using a simple step-by-step process. Easily bypass restrictions and change regions in minutes!Sometimes we need to switch the country or region of our Google Play account, but it can be difficul···
For beginners looking to step into the world of programming, Java and Python are both very popular choices. Each has its unique advantages and disadvantages, and the choice of language depends on your learning goals and future career plans.From a beginner's perspective, we wi···
Discover 10 essential techniques to prevent SQL injection attacks, a common cyber threat. Learn how strategies like parameterized queries, input validation, and secure coding can fortify your database from malicious SQL injections.This article introduces 10 effective methods to p···
SQL injection is a dangerous web vulnerability that allows attackers to manipulate databases by injecting malicious SQL commands. This article explores how SQL injection works, its common attack vectors, and the most effective prevention techniques.I. Introduction to SQL Injectio···
Cross-Site Scripting (XSS) is a prevalent security vulnerability that can compromise web applications, allowing attackers to inject malicious scripts. Understanding XSS is crucial for safeguarding sensitive data and maintaining user trust in online platforms.1. Overview of XSSPeo···
In this example app, both language and theme can be set, and both are implemented using ChangeNotifierProvider: we use Consumer2 in the main function to depend on ThemeModel and LocaleModel. Therefore, when we change the current settings in the language and theme settings pages, ···
We mentioned that GitHub has various login methods. For simplicity, we will only implement login via username and password. When implementing the login page, there are four points to note:The last logged-in username can be auto-filled (if available).To prevent password input erro···
1 APP Entry PointThe main function serves as the entry point for the app, implemented as follows:voidmain()=>Global.init().then((e)=>runApp(MyApp()));UI (MyApp) will only be loaded after initialization is complete. MyApp is the entry widget of the application, imp
In this section, we will encapsulate the network request interfaces used in our app based on the previously introduced Dio network library, while also applying a simple network request caching strategy. First, we will introduce the principles of network request caching, and then ···
Global Variables and Shared State in Flutter ApplicationsApplications typically contain variables that are relevant throughout their lifecycle, such as current user information and local settings. In Flutter, we categorize information that needs to be globally shared into two typ···
15.3 Data Preparation for the AppIn this section, we will outline the data needed for the app and then generate the corresponding Dart model classes. The approach to converting JSON files to Dart models uses the json_model package mentioned earlier. Before generating the model cl···
First, let's create a brand-new Flutter project named "github_client_app." The steps to create a new project may vary depending on the editor used by the reader, but they are relatively simple and will not be elaborated here. After creation, the project structure is···
1 Implementing Drawing Cache Using LayersIn this section, we will demonstrate how to use Layers in custom components by optimizing the previous "Drawing Chessboard Example."We initially used the CustomPaint component to draw the chessboard and the pieces within the pain···
The drawing-related implementations are found in the rendering object RenderObject. The main properties related to drawing within RenderObject include:layerisRepaintBoundary (type: bool)needsCompositing (type: bool, introduced in later sections)To facilitate description, let'···
1 Flutter Rendering PrinciplesIn Flutter, there are three objects related to rendering: Canvas, Layer, and Scene:Canvas: Encapsulates various drawing instructions of Flutter Skia, such as drawing lines, circles, rectangles, etc.Layer: Divided into container types and drawing type···
Layout ProcessThe layout process primarily determines the layout information (size and position) for each component. The Flutter layout process is as follows:The parent node passes constraint information to the child nodes, limiting the maximum and minimum width and height of the···
1 Application StartupIn this section, we will first introduce the startup process of Flutter, and then discuss the Flutter rendering pipeline.The entry point of Flutter is in the main() function located in lib/main.dart, which serves as the starting point for Dart applications. I···
1 Elementwe introduced the relationship between Widgets and Elements. We know that the final UI tree is composed of individual Element nodes. We also mentioned that the layout and rendering of components are completed through RenderObjects. The general flow from creation to rende···
1 What is a UI Framework?we discussed that Flutter is divided into three layers: the framework layer, the engine layer, and the embedding layer. We noted that developers primarily interact with the framework layer. This chapter will delve into the principles of the Flutter framew···
This section primarily addresses common issues encountered in internationalization.1 Incorrect Default LocaleIn some Android and iOS devices purchased from non-mainland channels, the default locale may not be Simplified Chinese. This is a normal occurrence; however, to prevent di···
1 Adding DependenciesBy using the Intl package, we can not only easily implement internationalization but also separate string texts into individual files, facilitating collaboration between developers and translators. To use the Intl package, we need to add two dependencies:depe···
1 IntroductionIf our application needs to support multiple languages, we need to "internationalize" it. This means that during development, we need to set "localized" values for each language environment that the application supports, such as text and layout. ···
This section will introduce packages and plugins in Flutter, along with some commonly used packages, but will not cover specific implementations.12.1.1 PackagesIn Chapter 2, we discussed how to use packages. We know that packages allow for the reuse of modular code. A minimal pac···
In today's competitive market, creating a successful product takes more than just following guidelines. It requires innovation, clear goals, and strong leadership. This article explores common mistakes product managers make, from weak execution to lack of creativity, and how ···
Many believe a large user base guarantees easy profit, but true success lies in understanding the cash pyramid model. This article unveils the three critical layers—monetization models, pricing strategy, and payment conversion—that drive sustainable product revenue. Discover ho···
Balancing team size with growth targets is a common challenge in SaaS sales. The gap between market potential and scarce customer resources often leads to misalignment in business strategies. Understanding market dynamics, refining customer management, and ensuring replicable sal···
Balancing long-term customer lifecycle value with short-term sales strategies is a key challenge in SaaS. How can companies optimize growth while managing immediate sales pressures? This article explores strategies for navigating this contradiction, from leveraging the societal v···
In the ever-evolving landscape of B2B digitalization, bridging the gap between what customers truly need and what businesses provide is key to unlocking growth. As organizations strive to understand the "demand gap," the flow of information between suppliers, products, ···
In SaaS product design, compensation design is a crucial module. It’s important to establish a reasonable compensation system, and product managers need to fully understand the system’s setup and processes. This article summarizes a typical compensation design path, which shoul···
82.1 Introduction to SocketsThe Socket API is a set of basic, standardized APIs provided by the operating system to implement application-layer network protocols. It encapsulates transport-layer network protocols, mainly TCP/UDP. The Socket API provides fundamental APIs for estab···
80.1 Principles of HTTP Chunked DownloadThis section will demonstrate the specific usage of Dio through an example of "HTTP chunked downloading."The HTTP protocol defines the Transfer-Encoding header field for chunked transfer, but whether it is supported depends on the···
The Dart IO library provides several classes for initiating HTTP requests, and we can directly use HttpClient to make requests. Initiating a request using HttpClient involves five steps:Create an HttpClient:HttpClienthttpClient=HttpClient();Open an HTTP connection and set the req···
The Dart IO library includes classes related to file reading and writing, and it is part of the Dart syntax standard. Therefore, whether it's a script running under Dart VM or Flutter, file operations are performed through the Dart IO library. However, there is an important d···
In this section, we will implement a DoneWidget that performs a checkmark animation upon creation, as shown in Figure:The implementation code is as follows:classDoneWidgetextendsLeafRenderObjectWidget{constDoneWidget({Key?ke
74.1 CustomCheckboxThe default Checkbox component in Flutter does not allow for custom sizing. In this section, we will demonstrate how to create a CustomCheckbox component that supports customizable sizes by defining a RenderObject (rather than through composition). The desired ···
