I am developing Qt Cross platform application for Android, recently i have updated Qt creator and Installed new Qt version. I am using \'Qt Creator version 4.5.0\'
Thanks I had the same problem, using Debian Buster (sid) with QtCreator 4.6.2 with Qt5.10.1
Go into ~/.config and wipe all the qtcreator settings, then start again specifying jdk.8 then the paths to the Android SDK and then the NDK.
It then works and the dumb SDK platform not installed error does not occur. :)
Out of interest I tried wiping everything ~/.config/qtcreator* and then specifying jdk10. Does not work as before.
If you then change to jdk8, it still does not work. You have to close QtCreator, wipe all the configs, reopen and choose it again, whereon it will work.