[SOLVED] Qt creator won't detect my android device

  • Hi,

    I'm trying to start developing for Android using the Qt toolkit, but I'm stuck in the stage of deploying the application to the device (I'm following the tutorial at http://qt-project.org/doc/qtcreator-2.8/creator-android-app-tutorial.html).

    My setup is :
    Qt Creator 2.8.1
    Qt 5.1.1 for Android armv7
    Android device : Samsung Galaxy Y running Android 2.3.5

    USB Debuggin is already enabled on my device, and "adb" detects it is connected. I can also send/receive files to/from the device via USB. I'm targeting an application at API level 10, and deploying to device is the default action.

    After trying to run I'm gettin the following error, and a dialog for choosing an AVD is popped:
    bq. 19:21:21: Please wait, searching for a suitable device for target:android-10.
    Error while building/deploying project accelbubble (kit: Android for arm (GCC 4.8, Qt 5.1.1))
    When executing step 'Deploy to Android device'

    Can anybody help me figure what the problem may be?
    Thanks in advance,

  • Hi, sorry to insist, but I really need to get this to work, so I can do a work for school.

    I have also followed the steps at http://qt-project.org/wiki/How-to-debug-Qt-applications-on-Android-device and http://developer.android.com/tools/device.html , but it still pops the AVD Manager when I try to Run the application on my device.

    Doesn't anyone really have any idea on how to track the problem?

  • Moderators


    Has the APK for your application created when you compile and deploy ?
    Check it in directory android > bin.
    You can manually copy this APK onto your phone and install it.

  • It looks like he defined an android api in the project that is higher than the api on his device.

  • Hi,

    Thank you for your replies!

    Moster : I'm targeting an Android API Level 10, which accordingly to (http://developer.android.com/about/versions/android-2.3.3.html) matches an Android version 2.3.3. The version running on my phone is 2.3.5 .

    p3c0 : It would be great if I could at least copy the release kit to my phone and install it there manually, but the directory you pointed out is empty. Could it be that the fail is actually at the build stage and QtCretor is no reporting it?

  • Moderators

    The application is getting compiled but the APK is not getting built.
    Since you have ubuntu, can you just goto "Your Android SDK dir" > sdk > tools, there you will see tool named "android". Just execute it and it will display the SDK's and system images for your target API. Check if those been installed for your target viz. 2.3.3.
    If possible can you post the screenshot of it ?

  • The only System Image that is listed there is one for Intel x86 Atom. But it wasn't installed :


    Later I installed it, but the .apk still wasn't generated. Any ideas on what this might be?

  • Moderators

    Now im to quite unsure what the problem could be. But can you try to compile for target api 18 to check atleast for it the apk is created ?

  • I did it, but I found no "bin" directory under my project dir/android. Would there be a reason for Qt Creator not being creating the APK?

  • Moderators


    bin directory will be created when you deploy the application. Was the deploy process initiated for target api 18 ?

  • For API Level 18, exactly the same thing happens:

    The same error message of "Android device not found" (which was already expected, since there was no device connected indeed), AVD Manager os popped, and there is not the creation of a /bin directory under /android for my project.

    I guess my ultimate trial would be to try with Qt 5.2 Alpha. Is there a way to report this bug to Qt?

  • Moderators

    Can you paste the whole compile output and deploy output here for target API 18 ? Will check it for last time.
    Also can get the screenshot of "Tools > Options > Android" window and paste here.

  • This is the compile output :
    @20:47:10: Running steps for project accelbubble...
    20:47:10: Configuration unchanged, skipping qmake step.
    20:47:10: Starting: "/usr/bin/make"
    /home/guilhermebrant/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++ -c -Wno-psabi -march=armv7-a -mfloat-abi=softfp -mfpu=vfp -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -DANDROID -Wa,--noexecstack -std=gnu++0x -g -g -marm -O0 -fno-omit-frame-pointer -Wall -Wno-psabi -W -D_REENTRANT -fPIE -DQT_NO_PRINTDIALOG -DQT_QML_DEBUG -DQT_DECLARATIVE_DEBUG -DQT_QUICK_LIB -DQT_SVG_LIB -DQT_QML_LIB -DQT_WIDGETS_LIB -DQT_XML_LIB -DQT_SENSORS_LIB -DQT_NETWORK_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../../Qt/5.1.1/android_armv7/mkspecs/android-g++ -I../accelbubble -I../../../Qt/5.1.1/android_armv7/include -I../../../Qt/5.1.1/android_armv7/include/QtQuick -I../../../Qt/5.1.1/android_armv7/include/QtSvg -I../../../Qt/5.1.1/android_armv7/include/QtQml -I../../../Qt/5.1.1/android_armv7/include/QtWidgets -I../../../Qt/5.1.1/android_armv7/include/QtXml -I../../../Qt/5.1.1/android_armv7/include/QtSensors -I../../../Qt/5.1.1/android_armv7/include/QtNetwork -I../../../Qt/5.1.1/android_armv7/include/QtGui -I../../../Qt/5.1.1/android_armv7/include/QtCore -I. -I../../../android-ndk-r9/sources/cxx-stl/gnu-libstdc++/4.6/include -I../../../android-ndk-r9/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi-v7a/include -I../../../android-ndk-r9/platforms/android-9/arch-arm/usr/include -I. -o main.o ../accelbubble/main.cpp
    /home/guilhermebrant/Qt/5.1.1/android_armv7/bin/rcc -name accelbubble ../accelbubble/accelbubble.qrc -o qrc_accelbubble.cpp
    /home/guilhermebrant/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++ -c -Wno-psabi -march=armv7-a -mfloat-abi=softfp -mfpu=vfp -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -DANDROID -Wa,--noexecstack -std=gnu++0x -g -g -marm -O0 -fno-omit-frame-pointer -Wall -Wno-psabi -W -D_REENTRANT -fPIE -DQT_NO_PRINTDIALOG -DQT_QML_DEBUG -DQT_DECLARATIVE_DEBUG -DQT_QUICK_LIB -DQT_SVG_LIB -DQT_QML_LIB -DQT_WIDGETS_LIB -DQT_XML_LIB -DQT_SENSORS_LIB -DQT_NETWORK_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../../Qt/5.1.1/android_armv7/mkspecs/android-g++ -I../accelbubble -I../../../Qt/5.1.1/android_armv7/include -I../../../Qt/5.1.1/android_armv7/include/QtQuick -I../../../Qt/5.1.1/android_armv7/include/QtSvg -I../../../Qt/5.1.1/android_armv7/include/QtQml -I../../../Qt/5.1.1/android_armv7/include/QtWidgets -I../../../Qt/5.1.1/android_armv7/include/QtXml -I../../../Qt/5.1.1/android_armv7/include/QtSensors -I../../../Qt/5.1.1/android_armv7/include/QtNetwork -I../../../Qt/5.1.1/android_armv7/include/QtGui -I../../../Qt/5.1.1/android_armv7/include/QtCore -I. -I../../../android-ndk-r9/sources/cxx-stl/gnu-libstdc++/4.6/include -I../../../android-ndk-r9/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi-v7a/include -I../../../android-ndk-r9/platforms/android-9/arch-arm/usr/include -I. -o qrc_accelbubble.o qrc_accelbubble.cpp
    /home/guilhermebrant/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++ --sysroot=/home/guilhermebrant/android-ndk-r9/platforms/android-9/arch-arm/ -Wl,-soname,libaccelbubble.so -Wl,-rpath=/data/bamboo/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-LGPLANDROIDLINUXX64510ARMV7/PADDING/lib -Wl,-rpath-link=/home/guilhermebrant/Qt/5.1.1/android_armv7/lib -Wl,--no-undefined -Wl,-z,noexecstack -shared -o libaccelbubble.so main.o qrc_accelbubble.o -L/home/guilhermebrant/android-ndk-r9/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi-v7a -L/home/guilhermebrant/android-ndk-r9/platforms/android-9/arch-arm//usr/lib -L/home/guilhermebrant/Qt/5.1.1/android_armv7/lib -lQt5Quick -L/opt/android/ndk/sources/cxx-stl/gnu-libstdc++/4.7/libs/armeabi-v7a -L/opt/android/ndk/platforms/android-9/arch-arm//usr/lib -lQt5Svg -lQt5Qml -lQt5Widgets -lQt5Xml -lQt5Sensors -lQt5Network -lQt5Gui -lQt5Core -lgnustl_shared -lsupc++ -llog -lz -lm -ldl -lc -lgcc -lGLESv2
    20:47:14: The process "/usr/bin/make" exited normally.
    20:47:14: Elapsed time: 00:04.@

    I just noticed something I haven't noticed before. It's under the "General Messages" tab:
    @Could not read qmake configuration file /home/guilhermebrant/Qt/5.1.1/android_armv7/mkspecs/android-g++/qmake.conf.@

    This is how the settings under Android look like :

    !http://oi39.tinypic.com/2092f6p.jpg(Android settings)!

    Is there anything you find relevant there?

  • Moderators

    From the screenshot i see you are using 64 bit Ubuntu, so
    Can you go into "android-sdk-linux > sdk > tools" and make sure the 64 emulator version is executing ?
    (By Default adb executes "emulator" and it is 32 bit so just rename "emulator" to something else and rename "emulator64-arm" to "emulator". This make sure that the 64 bit arm emulator will run on deploy)

    Hope this helps.

  • Well, this also didn't work. I'm gonna try Qt 5.2 and see if I get any results. I hope I can. Thank you very much for your help anyways, p3c0.

  • Moderators

    Ok. No problem :). BTW, Qt 5.2 beta is supposed to be released today as per their schedule. May be you could try with it.

  • Hello,
    any news on this topic ?
    I experiment the same problem with Ubuntu 13.10 (run on Windows with vmWare) + Qt5.2 Beta 1 (official + all snapshots since Beta1) + several different recent Android devices. The device is seen ('adb devices' shows the device), the build in Qt Creator is OK, but when trying to deploy I cannot see the device. On the same computer, with Qt Creator on Windows the device appears when deploying and it can be run on device.

  • I've been able to deploy to an Android device of API Level 16, but not for Level 10.

    The problem was that my project name contained a dash in its name (like hello-world, for instance). When generating the Java files to deploy for Android, Qt creates a package with the name of the project in it. This generates a compilation error, because dash is not allowed character in a Java Package name, but the error is not that transparent because it is in a Qt internal file. This bug should be resolved by Qt.

    It still doesn't work for API Level 10, however, neither on real device nor on an emulator.

  • @p3c0 thank you :-) your post save my day !

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