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Forum Update on Monday, May 27th 2025

Develop for android java issues

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  • Christian EhrlicherC Offline
    Christian EhrlicherC Offline
    Christian Ehrlicher
    Lifetime Qt Champion
    wrote on last edited by
    #5

    @Phips04 said in Develop for android java issues:

    I'm not sure, but maybe its not android itself being responsible for the problems.

    Did you read the post from @jsulm ?

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    • P Offline
      P Offline
      Phips04
      wrote on last edited by Phips04
      #6
      This post is deleted!
      J.HilkJ jsulmJ 2 Replies Last reply
      0
      • P Phips04

        This post is deleted!

        J.HilkJ Offline
        J.HilkJ Offline
        J.Hilk
        Moderators
        wrote on last edited by
        #7

        @Phips04 It does not matter at all what device you attach to your PC,

        what does matter is what minimal android version you set inside your manifest. Did you change it there ?


        Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


        Q: What's that?
        A: It's blue light.
        Q: What does it do?
        A: It turns blue.

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        • P Phips04

          This post is deleted!

          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #8
          This post is deleted!
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          • P Offline
            P Offline
            Phips04
            wrote on last edited by
            #9

            @J-Hilk Which file is that?

            Do you mean the *.pro file?

            KroMignonK 1 Reply Last reply
            0
            • P Phips04

              @J-Hilk Which file is that?

              Do you mean the *.pro file?

              KroMignonK Offline
              KroMignonK Offline
              KroMignon
              wrote on last edited by
              #10

              @Phips04 said in Develop for android java issues:

              Do you mean the *.pro file?

              No, the Android manifest ==> AndroidManifest.xml
              Double click on it in QtCreator to start the editor:
              11469230-f742-477d-b2a4-dac3c72d3219-image.png

              It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

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              • P Offline
                P Offline
                Phips04
                wrote on last edited by
                #11

                QTAndroid.jpg

                This is how it actually looks like, the option to set the sdk is disabled.
                I made sure, that the sdk's I want to use are installed. (Sry I'm new to qt)

                KroMignonK 1 Reply Last reply
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                • P Phips04

                  QTAndroid.jpg

                  This is how it actually looks like, the option to set the sdk is disabled.
                  I made sure, that the sdk's I want to use are installed. (Sry I'm new to qt)

                  KroMignonK Offline
                  KroMignonK Offline
                  KroMignon
                  wrote on last edited by
                  #12

                  @Phips04 Did you check QtCreator Android configuration?

                  In Tools/Option/Devices, select tab "Android":
                  9acabd97-323f-4a6a-8f1e-36521c90789c-image.png

                  It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

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                  • P Offline
                    P Offline
                    Phips04
                    wrote on last edited by
                    #13

                    Java and android settings are ok, in the android settings there is no "ndk-bundle". But the second entry exists, as I mentioned OpenSSL is not set

                    KroMignonK 1 Reply Last reply
                    0
                    • P Phips04

                      Java and android settings are ok, in the android settings there is no "ndk-bundle". But the second entry exists, as I mentioned OpenSSL is not set

                      KroMignonK Offline
                      KroMignonK Offline
                      KroMignon
                      wrote on last edited by
                      #14

                      @Phips04 said in Develop for android java issues:

                      in the android settings there is no "ndk-bundle"

                      This is your problem, ndk-bundle is mandatory for Qt!

                      Extract from the Qt documentation:
                      Use the sdkmanager command line tool to update the packages list and then install the essential packages:

                      cd <ANDROID_SDK_ROOT>/tools/bin/
                      ./sdkmanager --update
                      ./sdkmanager --install "platform-tools" "platforms;android-29" "build-tools;29.0.2" "ndk-bundle"
                      

                      It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

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                      • P Offline
                        P Offline
                        Phips04
                        wrote on last edited by
                        #15

                        Ok, I did it, but the cmd line reported some errors, and there was no effect in qt creator.
                        QTAndroid2.jpg

                        KroMignonK 1 Reply Last reply
                        0
                        • P Phips04

                          Ok, I did it, but the cmd line reported some errors, and there was no effect in qt creator.
                          QTAndroid2.jpg

                          KroMignonK Offline
                          KroMignonK Offline
                          KroMignon
                          wrote on last edited by
                          #16

                          @Phips04 This seems to be a well know issue with Android:

                          • https://stackoverflow.com/questions/60730615/sdkmanager-warning-could-not-create-setting-java-lang-illegalargumentexcepti
                          • https://medium.com/@s89707192/if-you-have-the-issue-652c7c1ad5d0

                          You can try:

                          cd <ANDROID_SDK_ROOT>\tools\bin\
                          sdkmanager --sdk_root="<ANDROID_SDK_ROOT>" --update
                          sdkmanager --sdk_root="<ANDROID_SDK_ROOT>" --install "platform-tools" "platforms;android-29" "build-tools;29.0.2" "ndk-bundle"
                          

                          It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

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                          • P Offline
                            P Offline
                            Phips04
                            wrote on last edited by
                            #17

                            It worked this way, the bundle is installed now, but I still can't change the minimal android version

                            J.HilkJ KroMignonK 2 Replies Last reply
                            0
                            • P Phips04

                              It worked this way, the bundle is installed now, but I still can't change the minimal android version

                              J.HilkJ Offline
                              J.HilkJ Offline
                              J.Hilk
                              Moderators
                              wrote on last edited by
                              #18

                              @Phips04 do it by hand than, open the android manifest.xml in a text editor
                              and change the version there
                              2fb9ec48-f65e-4d1d-97a4-2689c7454849-image.png


                              Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                              Q: What's that?
                              A: It's blue light.
                              Q: What does it do?
                              A: It turns blue.

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                              • P Offline
                                P Offline
                                Phips04
                                wrote on last edited by
                                #19

                                The .xml can be evaluated and I set the entries. Min sdk is 21 (android 5) and target is 27 (android 8.1). The error still is the same

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                                • P Phips04

                                  It worked this way, the bundle is installed now, but I still can't change the minimal android version

                                  KroMignonK Offline
                                  KroMignonK Offline
                                  KroMignon
                                  wrote on last edited by
                                  #20

                                  @Phips04 said in Develop for android java issues:

                                  It worked this way, the bundle is installed now, but I still can't change the minimal android version

                                  What do you mean with "you can't"? Is the dropdown combobox grayed out or is the list empty?
                                  Do you have restart Qt Creator after updating SDK root?

                                  It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

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                                  • P Offline
                                    P Offline
                                    Phips04
                                    wrote on last edited by
                                    #21

                                    Yes the combobox was grayed (I set the entries in the xml file via text editor, now I can edit the boxes) and I restarted Qt creator.

                                    KroMignonK 1 Reply Last reply
                                    0
                                    • P Phips04

                                      Yes the combobox was grayed (I set the entries in the xml file via text editor, now I can edit the boxes) and I restarted Qt creator.

                                      KroMignonK Offline
                                      KroMignonK Offline
                                      KroMignon
                                      wrote on last edited by KroMignon
                                      #22

                                      @Phips04 I know how have written "Java settings are ok", but which JDK version are you using?

                                      AFAIK, gradle do NOT work with JDK > 11, and recommended version is still JDK 8.

                                      It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

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                                      • P Offline
                                        P Offline
                                        Phips04
                                        wrote on last edited by
                                        #23

                                        I meant qt Creator says Java settings are ok.
                                        I didn't remember that version 8 is the recommended one, installed 15.
                                        I will replace it by 8 now

                                        KroMignonK 1 Reply Last reply
                                        0
                                        • P Phips04

                                          I meant qt Creator says Java settings are ok.
                                          I didn't remember that version 8 is the recommended one, installed 15.
                                          I will replace it by 8 now

                                          KroMignonK Offline
                                          KroMignonK Offline
                                          KroMignon
                                          wrote on last edited by KroMignon
                                          #24

                                          @Phips04 said in Develop for android java issues:

                                          I didn't remember that version 8 is the recommended one, installed 15.

                                          Yes, it is no clearly defined ==> https://doc.qt.io/qt-5/android-building.html.
                                          JDK 8, still recommended for best compatibility, but starting with Qt 5.15 JDK 11 could be used.

                                          Side note: if you search on internet java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7, all matches you will found will clearly detail the issue. The gradle version is not compatible with the selected JDK.
                                          For Qt 5.15, the used gradle version is 5.6.4 (just check in <QT_DIR>/5.15.0/android/src/3rdparty/gradle/gradle/wrapper/gradle-wrapper.properties)

                                          It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

                                          1 Reply Last reply
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