Book Image

Cross-Platform Development with Qt 6 and Modern C++

By : Nibedit Dey
Book Image

Cross-Platform Development with Qt 6 and Modern C++

By: Nibedit Dey

Overview of this book

Qt is a cross-platform application development framework widely used for developing applications that can run on a wide range of hardware platforms with little to no change in the underlying codebase. If you have basic knowledge of C++ and want to build desktop or mobile applications with a modern graphical user interface (GUI), Qt is the right choice for you. Cross-Platform Development with Qt 6 and Modern C++ helps you understand why Qt is one of the favorite GUI frameworks adopted by industries worldwide, covering the essentials of programming GUI apps across a multitude of platforms using the standard C++17 and Qt 6 features. Starting with the fundamentals of the Qt framework, including the features offered by Qt Creator, this practical guide will show you how to create classic user interfaces using Qt Widgets and touch-friendly user interfaces using Qt Quick. As you advance, you'll explore the Qt Creator IDE for developing applications for multiple desktops as well as for embedded and mobile platforms. You will also learn advanced concepts about signals and slots. Finally, the book takes you through debugging and testing your app with Qt Creator IDE. By the end of this book, you'll be able to build cross-platform applications with a modern GUI along with the speed and power of native apps.
Table of Contents (17 chapters)
Section 1: The Basics
Section 2: Cross-Platform Development
Section 3: Advanced Programming, Debugging, and Deployment

Deploying on Android

In addition to desktop platforms such as Windows, Linux, and macOS, mobile platforms are equally important due to the massive number of users. Many developers want to make their applications available on mobile platforms. Let's have a look at how that's done. We will briefly discuss deployment considerations on Android.

In Chapter 5, Cross-Platform Development, you have learned how to create an .apk file, which is the deployment package for the Android platform. So, we won't be discussing the steps again. In this section, we will discuss a few necessary changes before uploading to the play store:

  1. Create a simple HelloWorld application using the Android Kit from the kit selection screen.
  2. Change the build mode to Release mode.
  3. Open the build settings of your project. You will find several options on the screen:

    Figure 10.20 – A screenshot showing the Android manifest option in build settings

  4. You can see the Keystore field...