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Forum Update on Monday, May 27th 2025

Android app doesn't run

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  • M mzimmers
    26 Dec 2023, 22:27

    Hi all -

    I need to bump this, because I really need to get this app running on Android. I created a new, minimal project, and I'm still getting the error:

    Error: Activity class {org.qtproject.example.minimal_map/org.qtproject.qt.android.bindings.QtActivity} does not exist.
    

    I'm guessing it has something to do with my manifest file, and here's where I need help. I really don't understand most of the fields in this display:
    Screenshot 2023-12-26 141909.png
    So, a few questions:

    1. the fields that look like: -- %%INSERT_APP_NAME%% --; am I supposed to replaceeverything with my own values, or do I keep the dashes and "%"?
    2. do I need to replace all of those fields?
    3. what exactly is an "activity name?" My searches haven't revealed much.

    Thanks for any assistance...

    J Offline
    J Offline
    JKSH
    Moderators
    wrote on 5 Jan 2024, 01:30 last edited by
    #21

    @mzimmers said in Android app doesn't run:

    I created a new, minimal project, and I'm still getting the error:

    Quick sanity check: Do you get the error if create a new, minimal project and run it on Android without doing anything at all to the manifest file? In other words, just create the project and build + run it.

    I'm guessing it has something to do with my manifest file, and here's where I need help. I really don't understand most of the fields in this display:

    Be warned, that manifest editor is badly broken: https://bugreports.qt.io/browse/QTCREATORBUG-27119 I recommend that you don't touch it -- even the act of opening that editor is enough to corrupt the manifest file in some cases.

    Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

    E M 2 Replies Last reply 5 Jan 2024, 08:29
    0
    • J JKSH
      5 Jan 2024, 01:30

      @mzimmers said in Android app doesn't run:

      I created a new, minimal project, and I'm still getting the error:

      Quick sanity check: Do you get the error if create a new, minimal project and run it on Android without doing anything at all to the manifest file? In other words, just create the project and build + run it.

      I'm guessing it has something to do with my manifest file, and here's where I need help. I really don't understand most of the fields in this display:

      Be warned, that manifest editor is badly broken: https://bugreports.qt.io/browse/QTCREATORBUG-27119 I recommend that you don't touch it -- even the act of opening that editor is enough to corrupt the manifest file in some cases.

      E Offline
      E Offline
      ekkescorner
      Qt Champions 2016
      wrote on 5 Jan 2024, 08:29 last edited by
      #22

      @JKSH said in Android app doesn't run:

      Be warned, that manifest editor is badly broken: https://bugreports.qt.io/browse/QTCREATORBUG-27119 I recommend that you don't touch it -- even the act of opening that editor is enough to corrupt the manifest file in some cases.

      also have noticed that opening with Manifest Editor sometimes changes the content. But in my cases it was only a reformatting / reordering and nothing destroyed. (QtC 12.0.1)

      BTW: I'm getting best experiences this way:

      • Update Templates
      • check changes (using git)
      • add / replace with my settings
        this way I'm always getting the newest recommended values

      ekke ... Qt Champion 2016 | 2024 ... mobile business apps
      5.15 --> 6.8 https://t1p.de/ekkeChecklist
      QMake --> CMake https://t1p.de/ekkeCMakeMobileApps

      M 1 Reply Last reply 5 Jan 2024, 13:25
      0
      • E ekkescorner
        5 Jan 2024, 08:29

        @JKSH said in Android app doesn't run:

        Be warned, that manifest editor is badly broken: https://bugreports.qt.io/browse/QTCREATORBUG-27119 I recommend that you don't touch it -- even the act of opening that editor is enough to corrupt the manifest file in some cases.

        also have noticed that opening with Manifest Editor sometimes changes the content. But in my cases it was only a reformatting / reordering and nothing destroyed. (QtC 12.0.1)

        BTW: I'm getting best experiences this way:

        • Update Templates
        • check changes (using git)
        • add / replace with my settings
          this way I'm always getting the newest recommended values
        M Offline
        M Offline
        mzimmers
        wrote on 5 Jan 2024, 13:25 last edited by
        #23

        @ekkescorner said in Android app doesn't run:

        check changes (using git)

        Could you elaborate on this? Changes to what, exactly?

        E 1 Reply Last reply 5 Jan 2024, 14:11
        0
        • M mzimmers
          5 Jan 2024, 13:25

          @ekkescorner said in Android app doesn't run:

          check changes (using git)

          Could you elaborate on this? Changes to what, exactly?

          E Offline
          E Offline
          ekkescorner
          Qt Champions 2016
          wrote on 5 Jan 2024, 14:11 last edited by
          #24

          @mzimmers see here what I did while updating from 5.15 to 6.6:
          https://t1p.de/ekkeAndroidTemplates66
          this will give you the idea how I'm doing this

          ekke ... Qt Champion 2016 | 2024 ... mobile business apps
          5.15 --> 6.8 https://t1p.de/ekkeChecklist
          QMake --> CMake https://t1p.de/ekkeCMakeMobileApps

          M 1 Reply Last reply 5 Jan 2024, 15:28
          1
          • J JKSH
            5 Jan 2024, 01:30

            @mzimmers said in Android app doesn't run:

            I created a new, minimal project, and I'm still getting the error:

            Quick sanity check: Do you get the error if create a new, minimal project and run it on Android without doing anything at all to the manifest file? In other words, just create the project and build + run it.

            I'm guessing it has something to do with my manifest file, and here's where I need help. I really don't understand most of the fields in this display:

            Be warned, that manifest editor is badly broken: https://bugreports.qt.io/browse/QTCREATORBUG-27119 I recommend that you don't touch it -- even the act of opening that editor is enough to corrupt the manifest file in some cases.

            M Offline
            M Offline
            mzimmers
            wrote on 5 Jan 2024, 15:27 last edited by
            #25

            @JKSH thanks for the warning about the manifest editor -- it looks like TQC has painted itself into a corner on this one.

            I was going to try your suggestion, but now I have a different problem: my Android device shows as "disconnected" and I can't figure out what to do about this.

            E J 2 Replies Last reply 5 Jan 2024, 15:49
            0
            • E ekkescorner
              5 Jan 2024, 14:11

              @mzimmers see here what I did while updating from 5.15 to 6.6:
              https://t1p.de/ekkeAndroidTemplates66
              this will give you the idea how I'm doing this

              M Offline
              M Offline
              mzimmers
              wrote on 5 Jan 2024, 15:28 last edited by
              #26

              @ekkescorner that's a great page. I'm using 6.5.3; do you think your suggestions will work with this version?

              E 1 Reply Last reply 5 Jan 2024, 15:48
              0
              • M mzimmers
                5 Jan 2024, 15:28

                @ekkescorner that's a great page. I'm using 6.5.3; do you think your suggestions will work with this version?

                E Offline
                E Offline
                ekkescorner
                Qt Champions 2016
                wrote on 5 Jan 2024, 15:48 last edited by
                #27

                @mzimmers will be similar, but not the same. per ex. the Qt FileProvider only exists in 6.6+

                ekke ... Qt Champion 2016 | 2024 ... mobile business apps
                5.15 --> 6.8 https://t1p.de/ekkeChecklist
                QMake --> CMake https://t1p.de/ekkeCMakeMobileApps

                1 Reply Last reply
                0
                • M mzimmers
                  5 Jan 2024, 15:27

                  @JKSH thanks for the warning about the manifest editor -- it looks like TQC has painted itself into a corner on this one.

                  I was going to try your suggestion, but now I have a different problem: my Android device shows as "disconnected" and I can't figure out what to do about this.

                  E Offline
                  E Offline
                  ekkescorner
                  Qt Champions 2016
                  wrote on 5 Jan 2024, 15:49 last edited by
                  #28

                  @mzimmers said in Android app doesn't run:

                  my Android device shows as "disconnected"

                  connected via wifi or via usb cable ?

                  ekke ... Qt Champion 2016 | 2024 ... mobile business apps
                  5.15 --> 6.8 https://t1p.de/ekkeChecklist
                  QMake --> CMake https://t1p.de/ekkeCMakeMobileApps

                  M 1 Reply Last reply 5 Jan 2024, 15:50
                  0
                  • M mzimmers
                    5 Jan 2024, 15:27

                    @JKSH thanks for the warning about the manifest editor -- it looks like TQC has painted itself into a corner on this one.

                    I was going to try your suggestion, but now I have a different problem: my Android device shows as "disconnected" and I can't figure out what to do about this.

                    J Offline
                    J Offline
                    JoeCFD
                    wrote on 5 Jan 2024, 15:50 last edited by JoeCFD 1 May 2024, 15:51
                    #29

                    @mzimmers Click Manage Kits->Devices
                    select your device in Device combobox since your device may not be the default one.
                    Then click Debug above Run button and select your connected device.

                    M 1 Reply Last reply 5 Jan 2024, 15:56
                    0
                    • E ekkescorner
                      5 Jan 2024, 15:49

                      @mzimmers said in Android app doesn't run:

                      my Android device shows as "disconnected"

                      connected via wifi or via usb cable ?

                      M Offline
                      M Offline
                      mzimmers
                      wrote on 5 Jan 2024, 15:50 last edited by
                      #30

                      @ekkescorner USB cable. I deleted that device, and am trying to create a new one, but it keeps trying to make an emulator, not a "real" Android device.

                      E 1 Reply Last reply 5 Jan 2024, 15:55
                      0
                      • M mzimmers
                        5 Jan 2024, 15:50

                        @ekkescorner USB cable. I deleted that device, and am trying to create a new one, but it keeps trying to make an emulator, not a "real" Android device.

                        E Offline
                        E Offline
                        ekkescorner
                        Qt Champions 2016
                        wrote on 5 Jan 2024, 15:55 last edited by
                        #31

                        @mzimmers creating devices is for emulators. to connect via USB see https://t1p.de/ekkeManageDevices

                        ekke ... Qt Champion 2016 | 2024 ... mobile business apps
                        5.15 --> 6.8 https://t1p.de/ekkeChecklist
                        QMake --> CMake https://t1p.de/ekkeCMakeMobileApps

                        M 1 Reply Last reply 5 Jan 2024, 15:58
                        1
                        • J JoeCFD
                          5 Jan 2024, 15:50

                          @mzimmers Click Manage Kits->Devices
                          select your device in Device combobox since your device may not be the default one.
                          Then click Debug above Run button and select your connected device.

                          M Offline
                          M Offline
                          mzimmers
                          wrote on 5 Jan 2024, 15:56 last edited by
                          #32

                          @JoeCFD interesting -- I thought I had deleted that device, but it still shows up (and appears to be selected):
                          Screenshot 2024-01-05 075223.png
                          I'm not sure what you are referring to with "Debug above Run button." I'm only trying to build a release version.

                          1 Reply Last reply
                          0
                          • E ekkescorner
                            5 Jan 2024, 15:55

                            @mzimmers creating devices is for emulators. to connect via USB see https://t1p.de/ekkeManageDevices

                            M Offline
                            M Offline
                            mzimmers
                            wrote on 5 Jan 2024, 15:58 last edited by
                            #33

                            @ekkescorner oh, OK. I didn't realize that.

                            So...any idea why my device is showing as disconnected?

                            J 1 Reply Last reply 5 Jan 2024, 15:59
                            0
                            • M mzimmers
                              5 Jan 2024, 15:58

                              @ekkescorner oh, OK. I didn't realize that.

                              So...any idea why my device is showing as disconnected?

                              J Offline
                              J Offline
                              JoeCFD
                              wrote on 5 Jan 2024, 15:59 last edited by JoeCFD 1 May 2024, 16:03
                              #34

                              @mzimmers click Devices and show the tabs. I am debugging my app for Android now and have debug build. If you are building release, then it is Release above Run button on the lower left corner of Qt Creator.

                              M 1 Reply Last reply 5 Jan 2024, 16:01
                              0
                              • J JoeCFD
                                5 Jan 2024, 15:59

                                @mzimmers click Devices and show the tabs. I am debugging my app for Android now and have debug build. If you are building release, then it is Release above Run button on the lower left corner of Qt Creator.

                                M Offline
                                M Offline
                                mzimmers
                                wrote on 5 Jan 2024, 16:01 last edited by
                                #35

                                @JoeCFD
                                Screenshot 2024-01-05 080058.png

                                J 1 Reply Last reply 5 Jan 2024, 16:04
                                0
                                • M mzimmers
                                  5 Jan 2024, 16:01

                                  @JoeCFD
                                  Screenshot 2024-01-05 080058.png

                                  J Offline
                                  J Offline
                                  JoeCFD
                                  wrote on 5 Jan 2024, 16:04 last edited by JoeCFD 1 May 2024, 16:05
                                  #36

                                  @mzimmers is this device correct? Click the down arrow and you can see more.
                                  If yes, check if the cable is on. I had this issue this morning. The cable was off.

                                  M 1 Reply Last reply 5 Jan 2024, 16:06
                                  0
                                  • J JoeCFD
                                    5 Jan 2024, 16:04

                                    @mzimmers is this device correct? Click the down arrow and you can see more.
                                    If yes, check if the cable is on. I had this issue this morning. The cable was off.

                                    M Offline
                                    M Offline
                                    mzimmers
                                    wrote on 5 Jan 2024, 16:06 last edited by
                                    #37

                                    @JoeCFD it's the same device that worked for me last year. And it's indeed connected (I think it would have to be if it's auto-detected).

                                    J 1 Reply Last reply 5 Jan 2024, 16:20
                                    0
                                    • M mzimmers
                                      5 Jan 2024, 16:06

                                      @JoeCFD it's the same device that worked for me last year. And it's indeed connected (I think it would have to be if it's auto-detected).

                                      J Offline
                                      J Offline
                                      JoeCFD
                                      wrote on 5 Jan 2024, 16:20 last edited by JoeCFD 1 May 2024, 16:21
                                      #38

                                      @mzimmers Go to your computer and click this device to see if you are able to browse inside this device. For example, copy a file from this device to your computer. If yes, this means the device is connected to your computer. Otherwise, it is not connected.

                                      M 1 Reply Last reply 5 Jan 2024, 16:25
                                      0
                                      • J JoeCFD
                                        5 Jan 2024, 16:20

                                        @mzimmers Go to your computer and click this device to see if you are able to browse inside this device. For example, copy a file from this device to your computer. If yes, this means the device is connected to your computer. Otherwise, it is not connected.

                                        M Offline
                                        M Offline
                                        mzimmers
                                        wrote on 5 Jan 2024, 16:25 last edited by
                                        #39

                                        @JoeCFD tried that, and it sure appears to be connected:
                                        Screenshot 2024-01-05 082334.png
                                        I'm starting to wonder if there's something wrong with the SDK that Creator downloaded for me.

                                        J 1 Reply Last reply 5 Jan 2024, 16:33
                                        0
                                        • M mzimmers
                                          5 Jan 2024, 16:25

                                          @JoeCFD tried that, and it sure appears to be connected:
                                          Screenshot 2024-01-05 082334.png
                                          I'm starting to wonder if there's something wrong with the SDK that Creator downloaded for me.

                                          J Offline
                                          J Offline
                                          JoeCFD
                                          wrote on 5 Jan 2024, 16:33 last edited by JoeCFD 1 May 2024, 16:35
                                          #40

                                          @mzimmers yes, it is connected. Click the Android tab to see if anything is not set properly. I am now working with a Galaxy Tab A as well and do not have issues. Do you need to enable debugging in your Tablet? I remember you set it.

                                          M 1 Reply Last reply 5 Jan 2024, 16:40
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