[UE4.7.0 Bug] Deploying to Nexus 9: ERROR: Unknown NDK architecture 'arm64-v8a'

[Anonymous_8ff45bb8792afa6ecc59ce1bcae1affe (Tsuyoshi Okui)]

Yes. You have to recompile UnrealBuildTool.

1.Change Engine\Source\Programs\UnrealBuildTool\Android\UEBuildAndroid.cs

2.Open UE4.sln

3.Build UnrealBuildTool.