Vivo X20 18:9 Screen Adaptation Guide for Developers

Vivo is set to release the full-screen smartphone Vivo X20, featuring an 18:9 aspect ratio, which has generated considerable discussion among developers.

To assist developers in adapting their applications to this new screen format, Vivo has compiled a guide addressing five common issues encountered during 18:9 screen adaptation.

Problem One: Black borders appear on the screen. This occurs when the app is not adapted for the 18:9 aspect ratio; developers should adjust the layout to fill the screen completely.

Problem Two: UI stretching or deformation when full-screen mode is enabled. Applications that enforce full-screen display may experience stretched or deformed UI elements; the remedy is to replace images with appropriate assets or use nine-patch images.

Problem Three: OpenGL‑based rendering needs re‑examination. Additionally, certain designs that ignore center alignment cause interface offset, requiring adjustment based on center alignment. Furthermore, some applications do not account for the 18:9 ratio during design, leading to drawing areas that exceed boundaries without clipping; in such cases, the app must perform clipping adaptation.

Problem Four: Inconsistent virtual navigation bar colors. If the app does not set a color for the virtual navigation bar, the bar’s color may mismatch the app’s background (e.g., black bar on a white background), harming visual consistency.

Problem Five: Non‑scrolling layouts need review. Due to the increased height of 18:9 screens, fixed‑position layouts may require adjustment; developers are advised to use relative positioning instead of absolute coordinates.

The guide also recommends using emulator resolutions of 1440×720px or 2160×1080px for testing screen adaptation.