26、Error:No resource identifier found for attribute ’roundIcon’ in package ‘android’

I. Details:
During the development of the project, the following changes were made:

CompileSdkVersion and targetSdkVersion were adjusted from 25 to 23,

The result is tragic, direct report such error;

Ii. Cause of the problem:
After analysis:
Under the Application node in the AndroidManifest file
Android: roundIcon = “@ mipmap/ic_launcher_round”,

Version 23 does not support roundness. Android :roundIcon is a new feature in version 25.

Iii. Problem Solving:
Directly remove Android :roundIcon, successfully solved

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