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Develop for android java issues

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  • 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)

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                        2
                        • P Offline
                          P Offline
                          Phips04
                          wrote on last edited by
                          #25

                          Ok, now finally it works. This is my very basic UI for testing

                          QTAndroid4.jpg

                          This is the sourcecode:

                          import QtQuick 2.15
                          import QtQuick.Window 2.15

                          Window {
                          Rectangle {
                          id: rectangle
                          color: "#09a4cc"
                          anchors.fill: parent

                              Rectangle {
                                  id: rectangle1
                                  x: 220
                                  y: 117
                                  width: 200
                                  height: 200
                                  color: "#4facfe"
                                  radius: height / 2
                                  gradient: Gradient {
                                      GradientStop {
                                          position: 0
                                          color: "#4facfe"
                                      }
                          
                                      GradientStop {
                                          position: 1
                                          color: "#00f2fe"
                                      }
                                  }
                              }
                          }
                          

                          }

                          What it shows is simply a white screen.๐Ÿ™„

                          KroMignonK 1 Reply Last reply
                          1
                          • P Phips04

                            Ok, now finally it works. This is my very basic UI for testing

                            QTAndroid4.jpg

                            This is the sourcecode:

                            import QtQuick 2.15
                            import QtQuick.Window 2.15

                            Window {
                            Rectangle {
                            id: rectangle
                            color: "#09a4cc"
                            anchors.fill: parent

                                Rectangle {
                                    id: rectangle1
                                    x: 220
                                    y: 117
                                    width: 200
                                    height: 200
                                    color: "#4facfe"
                                    radius: height / 2
                                    gradient: Gradient {
                                        GradientStop {
                                            position: 0
                                            color: "#4facfe"
                                        }
                            
                                        GradientStop {
                                            position: 1
                                            color: "#00f2fe"
                                        }
                                    }
                                }
                            }
                            

                            }

                            What it shows is simply a white screen.๐Ÿ™„

                            KroMignonK Offline
                            KroMignonK Offline
                            KroMignon
                            wrote on last edited by
                            #26

                            @Phips04 I think you have to set property visible to true of top Window:

                            import QtQuick 2.15
                            import QtQuick.Window 2.15
                            
                            Window {
                                visible: true // ==> default value is false!
                                Rectangle {
                                    id: rectangle
                                    color: "#09a4cc"
                                    anchors.fill: parent
                                  ...
                               }
                            }
                            

                            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
                            1
                            • P Offline
                              P Offline
                              Phips04
                              wrote on last edited by Phips04
                              #27

                              Ok, QT creator does not recongnize the property, but it compiles, and now it works the way it should,
                              thanks for your help๐Ÿ‘

                              KroMignonK 1 Reply Last reply
                              1
                              • P Phips04

                                Ok, QT creator does not recongnize the property, but it compiles, and now it works the way it should,
                                thanks for your help๐Ÿ‘

                                KroMignonK Offline
                                KroMignonK Offline
                                KroMignon
                                wrote on last edited by
                                #28

                                @Phips04 Your welcome

                                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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