Xiaomi’s mobile devices and their sub-brands, such as Redmi and POCO, are famous for their flexible MIUI shell, which in recent versions has transformed into HyperOS. One of the key features of this ecosystem is the ability to deeply customize the look through official themes. Many users dream not just to download a ready-made solution, but also to implement their own unique design that reflects their individuality.
Creating a theme is a fascinating process that combines elements of graphic design, layout and even light programming. You don't have to be a professional developer to take your first steps in this direction. However, in order to get the result to be qualitative and stable, you need to strictly follow the algorithms prescribed by the shell company.
In this detailed guide, we will take a look at the entire production cycle, from the preparation of the workplace and tools to the final packaging and uploading of the file to the MIUI Theme Store, you will learn which graphic editors are best used, how to structure files correctly, and what typical mistakes beginners make at the start.
Preparation of the workspace and necessary tools
Before you start drawing icons or changing system fonts, you need to prepare software. The main tool for creating themes is the official MIUI Theme Editor utility. It is a specialized application that allows you to compile resources into a ready-made.mtz file that the system understands.
You'll need a powerful raster editor to work with graphics elements. The best choice is Adobe Photoshop or the free analog of GIMP. It's important that the program supports layering and transparency (alpha channel), since many interface elements overlap with each other. It's also good to have a vector editor at hand, such as Adobe Illustrator or Inkscape, for rendering clear icons.
⚠️ Attention: Download MIUI Theme Editor only from official resources or verified developer forums.Using modified or outdated versions of the collector can lead to incorrect compilation of the file that the smartphone system will refuse to install.
Beyond software, it’s critical to have a physical device or a quality emulator to test. The MIUI Theme Tester emulator allows you to quickly view changes on your computer, but it doesn’t always correctly display animations and system dialogs. So having a real Redmi or Xiaomi smartphone with an unlocked bootloader will greatly speed up the debugging process.
☑️ Readiness for development
Theme architecture and file structure
Theme for the shell MIUI/HyperOS It's an archive that has a certain internal structure, and understanding how files interact with each other is the foundation of successful development. XML-files that contain instructions for the system, and the image folder where all graphics are stored.
The main configuration file is usually called description.xml. It is in it that the meta information is prescribed: the title of the topic, the author, the version, as well as links to previews and screenshots. An error in the syntax of this file will cause the theme to simply not start or will appear as “broken”.
All images must be of a specific size. The system cannot automatically scale the graphics of the interface without loss of quality, so every element, from battery status to the call button, must be rendered in native resolution. Below is a table with the basic parameters for the standard FullHD screen, which is most common in the Redmi line.
| Interface element | Recommended authorization | File format | Description |
|---|---|---|---|
| Lock wallpaper | 1080 x 2400 px | JPG/PNG | Background image of the lock screen |
| Application icon | 192 x 192 px | PNG | Standard size for icons in the grid |
| Status bar (background) | 1080 x 100 px | PNG | Top lane with clocks and notifications |
| Lock button | 200 x 200 px | PNG | Slider or unlock button element |
The folder structure has to be logical. You usually create an image folder that has subfolders for different sections: lockscreen, home, dialer, which helps you not get confused in hundreds of files, especially when you decide to make several color options.
Design of lock screen and desktop
The Lock Screen is the first thing that a user sees, including a smartphone. It's important to balance aesthetics and readability. The clock and date must contrast with the background. MIUI uses a complex system of widgets, so when creating a theme, you need to provide free zones where the system will display notifications.
When drawing icons for the desktop (Home Screen) should stick to the same style. If you do the theme in the style of "neo-minimalism", then all icons, including system (settings, phone, messages), should be redrawn in this vein. Standard Android icons can be out of the ordinary and spoil the impression.
Remember the icons folder. It stores all the replacement graphical elements of the applications. XML-file icons.xml It links the application package (e.g. com.android.camera) to your image. If you miss a popular app, the user will see a standard gray plug, which looks unprofessional.
⚠️ Note: When creating icons, avoid using small details and thin lines. On high-pixel density smartphone screens, they can float, and on budget Redmi models with matrixes. IPS Low resolution will turn into porridge.
Customization of system elements and menu
Deep tuning involves changing not only the wallpaper, but also the system menus, and this includes the notification panel (Control Center), the volume menu, the call screen and the keyboard. XML-descriptors and folders with images.
Pay special attention to sliders and switches. In dark topics, it is important to adjust the color inversion correctly so that the text remains readable. Often developers forget about the state of "off" or "inactive", which makes the interface look broken. XML-color-code HEX-format.
The Dialer is one of the most commonly used interfaces, and ergonomics are critical here, numbers should be large, and reset and call buttons should be contrasted, and a mistake in positioning buttons can make it uncomfortable for the user to answer calls with one hand.
💡
Use translucent PNGs (alpha channel) for menu backgrounds, allowing the theme to adapt to different wallpapers, creating a depth and integration effect, rather than just a paste picture.
Animation and interactivity
Modern themes for Xiaomi are not static pictures, but living organisms. Load animation, menu transitions, touch response all make the interface enjoyable. To implement simple animations, you use frame-by-frame rendering (sprits), which is then stitched together into XML or a special shell animation format.
There is also the possibility of creating more complex scenarios that respond to the time of day or battery level. For example, the background can change color smoothly from morning blue to night black. However, complex animation increases the size of the theme file and can consume more CPU resources, which will affect autonomy.
When creating a battery animation, make sure the frame sequence is smooth. Sharp jumps between frames will irritate the eye. The optimal frame rate for system animation MIUI is usually 24-30 FPS, but for background processes, you can use less to save memory.
⚠️ Attention: Excessive use of animation and live elements can lead to increased battery consumption.Try to optimize the number of frames and size of images used so that the theme does not drain the smartphone in half a day.
Assembly, testing and publication of the topic
When all the graphics are ready and XML-Files are filled, the assembly stage is coming. MIUI Theme Editor, you import the project and you run the compilation. You get a file with the.mtz extension on the output.
To install on a real device, you often need to rename the file extension to.zip, unpack it, check the structure and then pack back, or use special debugging modes in the Themes app. Check the theme on different screens, in different applications and at different brightnesses.
What to do if the topic is not set?
After successful testing, you can proceed to publication, and the topics are uploaded through the MIUI Theme Store, which can take days to a week to moderate, and moderators check the topic for the guidelines, the lack of bugs, and the quality of the graphics.
💡
Successful publishing of a theme is just the beginning: Keep an eye on user feedback in the store, fix bugs quickly and release updates to keep your creation ranking and popular.