App run problems with Android 3.0 device with Qt versions 5.1.0 and 5.1.1

  • Hi all,

    I develop some apps to Android using Qt and run it in a Nexus S (Android 4.1.2) without problems. The problem has come when I have tried to deploy the application in a Acer A500 tablet, that has installed Android 3.0.1.

    I have installed Ministro and in both places it downloads all libraries. The problem appears when I execute the application from it: packaging successful, deploying successful, but the applciation crashes when is executed.

    The application output is the following:

    @E/dalvikvm( 2620): Can't open dex cache '/data/dalvik-cache/data@data@org.kde.necessitas.ministro@files@dl@0@stable@jar@QtAndroid.jar@classes.dex': No such file or directory
    I/dalvikvm( 2620): Unable to open or create cache for /data/data/org.kde.necessitas.ministro/files/dl/0/stable/jar/QtAndroid.jar (/data/dalvik-cache/data@data@org.kde.necessitas.ministro@files@dl@0@stable@jar@QtAndroid.jar@classes.dex)
    W/System.err( 2620): java.lang.ClassNotFoundException: in loader dalvik.system.DexClassLoader@407334f0
    W/System.err( 2620): at dalvik.system.DexClassLoader.findClass(

    Any idea why it occurs??

  • Ok, what is the android api level you are compiling the app with?
    Which gcc version do you use?

  • I'm currently using API 11, that corresponds to Android 3.0 and GCC 4.7, but I also tried with 4.6.

  • What happens if you choose to pack all libraries into the APK (and not ministro)?

  • The problem I have when I try to pack all libraries into the APK using Qt Creator is the following:

    Error while building/deploying project ProbaQt5 (kit: Android for arm (GCC 4.6, Qt 5.1.1))
    When executing step 'Deploy to Android device'

    I know it doesn't gives a lot of information. I'm certainly lost at this moment.

  • Could you show the complete compile log (with bundle in APK) or is that everything?

  • Sorry for my delay answering, but I have been working with other issues.

    Log I set is all information that I have. I think that it have to be a problem of version and target, because with Nexus S is there no problems.

    I tried with both Necessitas SDK and Qt 5.1.1 and there's no solution.

Log in to reply

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.