I noticed that UE4 does not allow building android apps when you have installed the Android SDK Tools v25.2.4 or higher as it simply puts out:
LogPlayLevel: UnrealBuildTool: **************************************************************************
LogPlayLevel: UnrealBuildTool: The "android" command is deprecated.
LogPlayLevel: UnrealBuildTool: For manual SDK, AVD, and project management, please use Android Studio.
LogPlayLevel: UnrealBuildTool: For command-line tools, use tools\bin\sdkmanager.bat
LogPlayLevel: UnrealBuildTool: and tools\bin\avdmanager.bat
LogPlayLevel: UnrealBuildTool: **************************************************************************
Can we expect a fix for that?