[Android-development] Running/Testing Qt Quick 2.0 application on Android from Mac

[Eric Feigenson]

A newbie's question...

I have a Qt Quick 2.0 application, which I can run on the desktop OK with Qt Creator 3.0.1.  I was able to cross-compile it with Android for armeabi-v7a (GCC 4.8, Qt 5.2.2) under Mac OS 10.8.5 for Android.  I have some problems running it.

Once I finally figured out how to actually tell Qt Creator to run it on my Galaxy SIII (Android version 4.3), everything seemed to load happily (a more prominent progress bar would be nice, since it doesn't seem like anything is happening), but the application output had this in it:

D/dalvikvm(15783): Added shared lib /data/app-lib/org.qtproject.example.WeightPlateQtQ-1/libWeightPlateQtQ.so 0x422da4b0
D/dalvikvm(15783): No JNI_OnLoad found in /data/app-lib/org.qtproject.example.WeightPlateQtQ-1/libWeightPlateQtQ.so 0x422da4b0, skipping init
D/libEGL  (15783): loaded /system/lib/egl/libEGL_adreno200.so
D/libEGL  (15783): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
D/libEGL  (15783): loaded /system/lib/egl/libGLESv2_adreno200.so
I/Adreno200-EGL(15783): <qeglDrvAPI_eglInitialize:265>: EGL 1.4 QUALCOMM build: HAREESHG_Nondeterministic_AU+PATCH[ES]_msm8960_JB_1.9.6_MR2_CL3219408_release_ENGG (CL3219408)
I/Adreno200-EGL(15783): Build Date: 09/28/13 Sat
I/Adreno200-EGL(15783): Local Branch: hhh
I/Adreno200-EGL(15783): Remote Branch: quic/jb_1.9.6_1
I/Adreno200-EGL(15783): Local Patches: 8d50ec23e42ef52b570aa6ff1650afac0b503d78 CL3219408: Fix in the Glreadpixels for negative offsets and larger dimensions.
I/Adreno200-EGL(15783):                  801859126f6ca69482b39a34ca61447e3f7cded8 rb: fix panel settings to clear undrawn/undefined buffers
I/Adreno200-EGL(15783): Reconstruct Branch: LOCAL_PATCH[ES]
D/OpenGLRenderer(15783): Enabling debug mode 0
W/Qt      (15783): file:///data/data/org.qtproject.example.WeightPlateQtQ/files/qml/WeightPlateQtQ/main.qml:-1 ((null)): file:///data/data/org.qtproject.example.WeightPlateQtQ/files/qml/WeightPlateQtQ/main.qml: File not found 
W/Qt      (15783): ../src/androidjnimain.cpp:695 (void updateWindow(JNIEnv*, jobject)): updateWindow: Dirty screen not implemented yet on OpenGL

The Samsung started running the app (yay!) but all that appeared was a white screen (boo!).  I can't tell where the main.qml cited in the messages above is supposed to be that couldn't be found (it's in the project).  I could see no /data directory on the phone.  And "Dirty screen" has no meaning to me at this point.

If I try running under the emulator (AVD_for_Galaxy_Nexus_by_Google, Android 4.3, ABI:armeabi-v7a armeabi), I get the same white screen, but a different set of interesting messages:

I/Choreographer(  875): Skipped 48 frames!  The application may be doing too much work on its main thread.
D/gralloc_goldfish(  875): Emulator without GPU emulation detected.
D/libEGL  (  875): Emulator without GPU support detected. Fallback to software renderer.
D/libEGL  (  875): loaded /system/lib/egl/libGLES_android.so
W/Qt      (  875): file:///data/data/org.qtproject.example.WeightPlateQtQ/files/qml/WeightPlateQtQ/main.qml:-1 ((null)): file:///data/data/org.qtproject.example.WeightPlateQtQ/files/qml/WeightPlateQtQ/main.qml: File not found 
W/Qt      (  875): eglconvenience/qeglconvenience.cpp:289 (void* QEglConfigChooser::chooseConfig()): Cant find EGLConfig, returning null config
W/Qt      (  875): eglconvenience/qeglconvenience.cpp:289 (void* QEglConfigChooser::chooseConfig()): Cant find EGLConfig, returning null config
W/Qt      (  875): scenegraph/qsgcontext.cpp:472 (virtual void QSGRenderContext::initialize(QOpenGLContext*)): QSGContext::initialize: depth buffer support missing, expect rendering errors
W/Qt      (  875): scenegraph/qsgcontext.cpp:474 (virtual void QSGRenderContext::initialize(QOpenGLContext*)): QSGContext::initialize: stencil buffer support missing, expect rendering errors
E/libEGL  (  875): called unimplemented OpenGL ES API

Does thing ring any bells with anyone?

Thanks!

-Eric
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