@jmpessoa
Hello jmpessoa,
I have found this problem,and fixed this problem.
When the error is show , I found in the file "JNIAndroidProject.ini / AndroidPlatform=-1" , then I change it to 0 ,this error not show.
You are right , it's in the file "uformworkspace.pas" , read the "FAndroidPlatform" is not validity, I change ListBoxPlatform.ItemIndex:=0 to fixed this problem.
Thanks and best regards!