Xiaomi, Redmi and Poco smartphone owners know that the MIUI shell or its new version of HyperOS provides tremendous opportunities for personalization. Standard settings often limit the user to just the choice of ready-made skins from the store, but real freedom begins where the capabilities of standard tools end. Creating your own theme is not just a way to stand out, it is an opportunity to completely reshape the visual experience of using the device to your needs.
The development process requires attention to detail and understanding the structure of the graphics shell files. You don't have to be a professional programmer to change icons or fonts, but a basic understanding of working with archives and graphic editors will significantly speed up the process. Modern firmware versions have become stricter to modifications, but the tools for developers remain accessible and functional.
In this guide, we will break down the full cycle of customization: from the preparation of raw materials to the final compilation of the.mtz file. We will touch on the work with the official editor and manual editing of code, which will allow you to create truly unique products that do not depend on templates.
Necessary tools and environment preparation
The first step to creating your own theme is to install specialized software. The developer's main tool is MITHeme Editor, Xiaomi's official utility that makes it much easier to work with the shell file structure. The program allows you to visually edit parameters without deep immersion in code, although knowing the basics of XML will not be superfluous.
In addition to the main editor, you will need high-quality graphics sources: icons, wallpapers and interface elements must be prepared in advance in PNG formats with transparent channel support. You can use Photoshop, GIMP or lighter analogues like Paint.NET to edit graphics.
☑️ Preparations for development
It is also important to consider the differences between Android versions and shells. Themes created for MIUI 11 may not display correctly on HyperOS due to changes in system fonts and element layout. So always check your project's compatibility with the target firmware version before starting the active development phase.
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Use the source files of Xiaomi system themes as a reference – this is the best way to understand the correct sizes and names of items.
Installation and configuration of MITHeme Editor
The official theme editor can be found on specialized forums or in developer repositories, as it is often missing or presented in a stripped-down form on Google Play. Once you download the APK installation file, you must allow installation from unknown sources in your smartphone security settings.
When you first run it, you'll want to create a new project, and you'll need to specify the title of the theme, the author, and the version. You'll want to select the template that's as close to the desired result as possible so you don't create all the elements from scratch. The editor interface is divided into logical blocks: preview, file list, and property bar.
Special attention should be paid to configuring the paths to resources. In the Settings menu, make sure that the paths to the icons and fonts folders are indicated correctly. A mistake in the path will lead to the fact that when compiling a theme, some elements can simply disappear or be replaced by standard system plugs.
- 🛠️ Interface: Intuitive window for real-time preview of changes.
- 📂 File system: Direct access to the structure of the theme folders without the need to unpack archives.
- 🔍 Search: Ability to quickly find the desired item by file name or type.
Where do I download the editor?
Structure of the theme file system
Understanding how files are organized within a theme is critical to successful customization: Each theme is an archive containing many folders that handle different aspects of the interface, with major changes typically made to icons, wallpaper, and description folders.
File. description.xml It's the "passport" of your theme, and it's the title, the author, the version of Android that the theme is intended for, and the paths to the main images, and a syntax error in that file will cause the system to fail to see the theme at all or refuse to install it.
The icons folder contains images for all applications. It is important to follow a uniform style and dimension. The system automatically scales the icons, but for the best quality, it is recommended to use source sizes of 192x192 pixels or 512x512 pixels depending on the density of the screen.
| Folder/File | Appointment | Format |
|---|---|---|
| description.xml | Meta-data topics | XML |
| icons/ | Application icons | PNG |
| lockscreen/ | Lock screen | PNG/XML |
| statusbar/ | Status line | PNG/XML |
Don't ignore the statusbar folder. This is where the top panel looks like it's customized: watches, battery, signal level, and changing those elements is the most important thing that affects how the user experiences the interface in everyday use.
Editing icons and graphic elements
The easiest way to start is to replace the standard icons with your own. In MITHeme Editor, this is done through the Icon Pack tab. You can download the finished sets or draw each icon individually. When creating your own style, try to stick to the same color gamut and shape (round, square, rounded).
For advanced users, manual editing is available XML-This allows you to set complex masks and effects that are not available in a standard editor, for example, you can make the background of the icon dynamically change depending on the time of day, if the shell supports this function.
When you're working with graphics, keep in mind the weight of the files. High-resolution icons can take up tens of megabytes, which will slow it down when you turn on your phone. PNG-files using utilities like PNGGauntlet or online services to reduce size without losing visible quality.
Special attention should be paid to the widgets of the clock and dates on the lock screen. XML-A mistake in one coordinate can shift the entire interface by a few pixels, which will look sloppy.
Working with fonts and system sounds
The font is the face of text. Replacing the system font can change the mood of the interface. Fonts contains the files that display text in menus and applications. TTF and OTF formats are supported.
When choosing a font, it is important to consider its readability. Decorative fonts with serifs or complex elements can not read well on a small screen of a smartphone, especially in a small pin. For the main system font, it is better to choose grotesque (sans-serif fonts) with good support for Cyrillic.
Audio designs are also part of the theme. You can replace the system sounds of notifications, call and lock screen. Files must be in OGG or MP3 format and have the appropriate names spelled out in the theme configuration files.
⚠️ Note: When replacing system fonts, make sure that the selected file contains all the necessary glyphs (characters).The absence of characters will lead to the appearance of "quadricks" instead of letters in the interface.
Compilation, testing and debugging
Once you make all the changes, you have to put together a theme. In MITHeme Editor, you do this through the File → Build menu or the compilation button on the toolbar, and you create a file with the.mtz extension, which is the finished theme.
Before you share a topic with others, you need to test it. Install the.mtz file on your smartphone through the theme menu (Profile → Topics → Local) and walk through all screens carefully: the main menu, settings, notification curtain, call screen.
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Testing at different screen resolutions is a must, and what looks beautiful on a flagship with AMOLED can go on a budget model with an IPS matrix.
Frequent test errors include mismatching text and background colors, cropped icons in the settings menu, and incorrect status bar display. If you notice such defects, go back to the editor, make edits, and recompile the project.
To debug complex elements, such as a lock screen, it may be necessary to view system logs through the ADB. Adb logcat will help you identify errors in the XML-code that is not visible visually but prevents the correct operation of the element.
Dissemination and installation of created themes
When the theme is ready and tested, it is up to you to install it on other devices or publish it. To install it on another phone, Xiaomi simply transfer the.mtz file and open it through the standard Themes app. However, if the theme is not signed with a developer certificate, the system can issue a warning.
To publish in the official Xiaomi theme store (GetThemes) requires registration as a designer on theme.miui.com. This is a verification process that requires portfolio and strict design rules.
The alternative is to distribute it through third-party resources, forums, and Telegram channels, in which case you are not limited by Xiaomi’s moderation rules, but you will also have a smaller audience, and users will have to manually install the theme through the Locals section of the theme app.
- 📤 Official Store: Requires a developer account, gives coverage, has moderation.
- 🤝 Forums and channels: Instant publication, no moderation, requires independent PR.
- 📲 Local installation: Suitable for personal use or transfer to friends directly.
⚠️ Note: Distributing topics that contain copyrighted images (brand logos, movie characters) may result in your developer account being blocked or the topic being removed from the directory.
Creating themes for Xiaomi is a creative process that allows you to gain a deeper understanding of the Android and MIUI device. Starting with a simple replacement of icons, you can grow to create complex dynamic interfaces that will be used by thousands of people around the world.