Creator does the "Copy application data" deployment step like this:

make INSTALL_ROOT="/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android" install

and that does this

install -m 755 -p "libfingerpaint.so" "/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/libfingerpaint.so"
install -m 644 -p /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/fingerpaint.pro /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/
install -m 644 -p /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/main.cpp /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/
install -m 644 -p /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/mainwindow.cpp /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/
install -m 644 -p /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/scribblearea.cpp /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/
install -m 644 -p /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/mainwindow.h /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/
install -m 644 -p /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/scribblearea.h /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/

The result is that libfingerpaint.so is not included in the .apk package, and is not installed on the device, so it won't run. I can finish the installation manually like this:

adb push /home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/android/home/rutledge/dev/qt5-android/qtbase/examples/touch/fingerpaint/libfingerpaint.so /sdcard/
adb shell
su
mv /sdcard/libfingerpaint.so /data/app-lib/org.qtproject.example.fingerpaint-1/