How to make a theme for Xiaomi phone: a guide for beginners

Creating your own design theme for Xiaomi smartphone is not just a way to stand out, but also a real way to understand how the MIUI graphics shell works. Standard store solutions are often limited in functionality or contain advertising, whereas custom design allows you to control every pixel on the screen of your device.

Before you start drawing icons, you need to prepare a software environment, you need a computer with Windows, because the official developer tools do not support mobile platforms, and you also need to collect references and think about the color style to make the interface look harmonious.

In this article, we will discuss all the steps from installing specialized software to the final compilation of the.mtz file. Even if you have never designed interfaces, a step-by-step guide will help you create a working project.

Tools and workplace preparation required

The foundation for any theme is the official MIUI Theme Editor tool, a specialized program that automatically generates the folder structure and files required for the shell to work, and can only be downloaded from the official Xiaomi developer portal by logging in through the Mi Account.

In addition to the editor, you'll need a graphics raster editor. Professionals use Adobe Photoshop, but a free GIMP or even advanced online services is a good place to start. It's important that the program supports layering and PNG transparency.

⚠️ Note: Make sure that the version MIUI Theme Editor matches the firmware version on your phone.Using the old editor for the new one MIUI 14 may result in compilation errors or incorrect display of elements.

For a comfortable work, also prepare a folder with source codes: logos, fonts and basic images. The structure of the project should be clean so as not to get confused in the hundreds of files that the editor will create.

• 🖥️ Windows PC (10 or 11 versions) to run the theme editor.
• 🎨 Graphic editor with support for layers and alpha channel.
• 📱 Xiaomi smartphone with unlocked bootloader (for deep debugging).
• 🔑 Xiaomi Developer Account with Confirmed Status.

Once you install the editor, create a new project by selecting the screen resolution of your device, most commonly 1080x2400 or 1080x2340 for modern models, and the program itself will create a basic set of files that we will modify.

Project structure and work with files

Once you create a new project, you'll see a complex hierarchy of folders in the editor, and understanding this structure is critical, because that's where all the visual elements are stored. The main directories are commonly called icons, images, lockscreen, and preview.

File. description.xml It's your theme's "passport" and it spells out the title, author, version and compatibility with screen resolutions. XML This can cause the system to simply not see the theme when installing.

The image folder stores wallpaper, menu backgrounds and system stickers. It's important to keep the weight of the files in mind: images that are too heavy can cause the interface to slow down when scrolling. The optimal format for static graphics is PNG-24.

Pay special attention to preview files. The system uses thumbnails from the preview folder to display a theme in the store. If they are missing or are incorrectly sized, the theme may be rejected by moderators.

Icon Design: From Concept to Implementation

The most extensive part of the work is rendering icons. MIUI uses its own masking system, but for custom theme it is better to draw unique shapes. The standard size of the icon in the editor is usually 192x192 pixels, but for high-density displays, it is better to use source sources 512x512.

Stick to a uniform style. If you choose a flat design, don't add three-dimensional shadows to some icons while leaving others flat. Consistency is a key factor in quality visual perception.

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Use the grid in the graphics editor to align the symbols inside the icons, which will create a sense of order even when using different geometric shapes.

For system applications such as Phone, Messages and Settings, icons should be as recognizable as possible. The user is used to searching for certain characters, and a radical change can cause discomfort.

• 🎨 Keep a single rounding angle for all app icons.
• ⚖️ Keep the balance of colors so that bright icons do not rag against the wallpaper background.
• 📐 Use guides to center symbols inside the square.

Don’t forget about icons for popular third-party apps: WhatsApp, Telegram, YouTube. If the topic is planned for publication, the absence of icons for top-end apps will be considered a minus.

Design of system elements of the interface

In addition to icons, the theme changes the look of notification curtains, settings menus and dialog boxes, and in the MIUI editor, these elements are broken down into many small images: buttons, sliders, backgrounds of plaques.

Pay special attention to the control panel. In newer versions of MIUI, it occupies a significant part of the screen, and the Wi-Fi, Bluetooth and flashlight buttons should be clearly readable in both active and inactive states.

⚠️ Warning: When changing the color of text in system menus, make sure it contrasts with the background.White text on a light gray background will make the phone virtually unusable in bright light.

Fonts also play an important role. You can replace the system font with your own, but make sure it contains all the necessary characters (Cyrillic, numbers, special characters). missing glyphs will turn the text into a set of squares.

Charging animation is another popular customization element, and it's implemented through a sequence of frames (sprites) that alternate when you connect the cable, and it requires you to prepare a series of images in the charging folder.

Lock screen and widgets

The Lock Screen is the first thing that a user sees, and the MIUI Theme Editor has a separate module to set it up, so you can change the position of the clock, the date and the style of the unlock.

Contemporary topics support AOD (Always On Display: This requires a black image with a minimum number of bright pickles to avoid burning out the matrix. AMOLED-Battery consumption on a black background with white numerals is minimal.

Watch widgets can be complex, with a second hand, date, and even weather, and the editor allows you to adjust the coordinates of each element, and check the accuracy of the positioning on the real device or in the emulator.

• ⏰ The clock must be read from arm's length.
• 📅 The date format should correspond to the region (DD.MM or MM.DD).
• 🔒 The unlock style (swipe, button) should be obvious.

Don't overload the lock screen with information, and it's all about information and quick access, not about showing off all the design.

Testing, compilation and publication

When all the elements are ready, the build phase begins. In MIUI Theme Editor, press the Compile or Build button. The program will check for all the required files and package the project into a file with the.mtz extension.

There are two ways to set up a test theme. One is through Explorer: copy the.mtz file to /MIUI/theme/ on your phone and apply it through the standard Themes app. The second, more professional, is by connecting to ADB or using debugging mode.

If a theme is created for publication in an official store, it will undergo strict moderation, checking the uniqueness of the graphics, the absence of other people's logos (for example, brand logos on icons) and compliance with Xiaomi guidelines.

The publishing process takes anywhere from a few days to a week, and once approved, the theme will be available to millions of users around the world, and it's a great way to establish yourself as a designer.

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A successful theme is a balance between unique design and usability. Don't sacrifice readability for beauty.

Frequently Asked Questions (FAQ)