Android app doesn't run

mzimmers

Hi all - I need to return my attention to this -- I've got to get this working.

All my build setup items seem in place, and the project builds for Android just fine. But when I try to deploy and run, I get this same old error message:

Activity Manager threw the error: Error type 3
Error: Activity class {org.qtproject.example/org.qtproject.qt.android.bindings.QtActivity} does not exist.

Can anyone give me an idea what's going wrong here? Thanks...

ekkescorner

what's your actual environment ?
Qt version, QtCreator Version
JDK, NDK, Java API
QMake or CMake

mzimmers

@ekkescorner

Qt 6.5.3
Qt Creator 14.0.1
SDK Version: 12.0
NDK Version: 25.1.8937393
JDK 17
Using CMake
Windows 11

Not sure what you mean by Java API, but maybe this will help:

C:\Users\michael.zimmers>java --version
java 17.0.9 2023-10-17 LTS
Java(TM) SE Runtime Environment (build 17.0.9+11-LTS-201)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.9+11-LTS-201, mixed mode, sharing)

C:\Users\michael.zimmers>

Thanks for any assistance.

ekkescorner

@mzimmers said in Android app doesn't run:

Not sure what you mean by Java API

I meant

set_target_properties(${MY_APP}
    PROPERTIES
        QT_ANDROID_MIN_SDK_VERSION 26
        QT_ANDROID_TARGET_SDK_VERSION 34
)

my settings from 6.7.1
for 6.5 seems to be 23, 33 (see https://www.qt.io/blog/qt-for-android-supported-versions-guidelines)

Thanks for any assistance.
ATM have no idea

have you created (updated) Android Templates so all fits together ?

mzimmers

@ekkescorner I've created the templates, but I haven't modified them. I can't find documentation that tells me how to populate the fields.
Screenshot 2024-08-18 082850.png
Note that the pulldowns for setting the SDK are disabled.

ekkescorner

@mzimmers said in Android app doesn't run:

Note that the pulldowns for setting the SDK are disabled.

Google has changed this long time ago. Now Min and Target are managed by Gradle and not the Manifest.

here's some info from my blogs HowTo do this with CMake:
https://ekkesapps.wordpress.com/qt-6-in-action/qmake-cmake/android-specific/

JKSH

@mzimmers said in Android app doesn't run:

@ekkescorner I've created the templates, but I haven't modified them. I can't find documentation that tells me how to populate the fields.

Note that the pulldowns for setting the SDK are disabled.

That editor is badly broken. I recommend avoiding it: https://bugreports.qt.io/browse/QTCREATORBUG-27119

As a quick sanity check, create a new "Hello World" project. Does that build and run correctly?

mzimmers

@JKSH OK, built a new project. I configured it for Android, but there's nothing in the CMakeLists.txt file about Android. (I didn't add any of the stuff that @ekkescorner mentions on his web page.) When I build, I get an error:

:-1: error:      aapt2.exe E 08-18 19:22:13 16988 23404 ApkAssets.cpp:149] Failed to load resources table in APK 'C:\Users\michael.zimmers\AppData\Local\Android\Sdk\platforms\android-35\android.jar'.
     error: failed to load include path C:\Users\michael.zimmers\AppData\Local\Android\Sdk\platforms\android-35\android.jar.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

So, I'm not sure where to go from here. It's hard to tell whether the problem is in my Android setup, or my specific project settings.

ekkescorner

@mzimmers running Qt Examples without changes this should work without creating and modifying templates.
If examples don't run there seems to be something wrong with your Android / QtC installation
BTW: you can verify the settings for min and target. go to your build dir and take a look at

build
    android-build
          gradle.properties

mzimmers

@ekkescorner just to be clear, this error didn't come from one of the presupplied Qt examples. I created it using the project wizard.

Here are the version settings in my gradle.properties file:

androidBuildToolsVersion=33.0.0
androidCompileSdkVersion=android-35
androidNdkVersion=25.1.8937393
qtMinSdkVersion=23
qtTargetAbiList=arm64-v8a
qtTargetSdkVersion=31

They don't seem to match what you indicated would be correct.

BTW: Is there a typo in this section of your page?

Qt supports these API Level:

Qt 6.6: Min API 26 (Android 8)
Qt 6.8 MIn API 28 (Android 9)
see QTBUG-124890
Qt 6.6: Target API 33 (Android 13)
Qt 6.7: Target API 34 (Android 14)

ekkescorner

this is from one of my 6.7.1 apps:

android.useAndroidX=true
androidBuildToolsVersion=34.0.0
androidCompileSdkVersion=android-34
androidNdkVersion=26.1.10909125
qtMinSdkVersion=26
qtTargetAbiList=arm64-v8a
qtTargetSdkVersion=34

QMake or CMake - always the same for my projects

BTW: some examples from create (update) Templates I did:
https://ekkesapps.wordpress.com/qt-6-cmake/qtcreator-android-templates-2/

mzimmers

OK, but...given that this file is built for me, clearly I don't want to just make changes to it. Where are the settings that populate the contents of this file when it's built? Is there something wrong with my Preferences -> Devices -> Android settings?

ekkescorner

don't know what's wrong
seems you have built with android-35
dont know if this works with 6.5
have no experiences with 6.5 - started my Qt 6 development with 6.6
you can try to change this to 33, what's supported by 6.5

mzimmers

@ekkescorner I changed to 33; no success. I then deleted all my Qt project cache and rebuilt. It now works...sort of. I'm going to have a bunch more questions, but it's time to close out this thread and start a new one. Thank you for all the help.

ekkescorner

@mzimmers said in Android app doesn't run:

I then deleted all my Qt project cache and rebuilt. It now works

this is always the first thing if something wrong with build or if templates created or QtC changed: delete the build dir physically - not only build-clean in QtC
sorry - forgot to ask you about ;-)
good that it's working

mzimmers

@ekkescorner just to be clear, for me it was not sufficient to delete the build directory. I had to go into home\AppData\Roaming\QtProject and delete all the files in there.

ekkescorner

this is the folder where QtC stores Settings on windows ?
I never use the default settings location for QtC to avoid problems if different QtC versions are installed. I always start QtC with a specific settings folder for each installation.

KenAppleby 0

I have just discovered that you can trigger this problem simply by unchecking:

Edit -> Preferences ... -> Build & Run -> "Always deploy project before running it"

then making changes and rebuilding the project.

Turning this option back on solves the problem - without having to use the sledgehammer of removing the AppData/Roaming/QtProject folder!

It makes sense, I suppose, though I believe this was not the case in earlier versions of Qt. I am using QtCreator 14.0.1 on Qt6.7.2.