(First, describe the interface UI adaptation scheme of Android under multi-resolution and multi screen density. The adaptation of Android UI in different platforms is affected by screen size and screen density. Different platform resources are distinguished by different restrictions. In the process of practical development, the screen size is not straightforward enough. Android converts it into resolution, which shows that corresponding limiters can be selected according to the detailed screen resolution, This article allows you to understand how to implement an APK to adapt to the use of several mainstream screen scales and screen densities.)