Testing Android APK with QtCreator fails with an error.

piervalli

you can include whatever you want. Google added many abi to support many hardware.arm64-v8a is for modern hardware.

SMF-Qt

Ok, I have now been given the correct way to include ssl in my Qt6 build [https://forum.qt.io/topic/162514/building-qt-6.9.1-for-android-with-ssl-support.].

As part of that excercise I have changed some of the system packages specifically:
jdk-17.0.12 and NDK 27.2.12479018.

My android Qt build is in /opt/qt-android as before and if I run /opt/qt-android/bin/qmake6 against my QtTest.pro file and run make I get a arm64-v8a build.
If I try and build using qtcreator even though I think I have reconfigured it for the new jdk and ndk and have given it /opt/qt-android for the Qt environment it errors with:

14:52:44: No Qt version configured.
14:52:44: Error while building/deploying project QtTest (kit: Qt 6.9.1 (qt-6.9.1))
14:52:44: When executing step "qmake"

Obviously I have miss configured my QtCreator setup when I introduced these changes but I cannot see where, any suggestions are welcome.

SMF-Qt

@SMF-Qt

Going to answer my own question here, for other reasons I had to reboot my android system on re-entering qtcreator I found that my test application would compile however because of other problems I still cannot move forward see [https://forum.qt.io/topic/162567/update-on-android-15-new-page-size-memory-16kb] for one the other is that qtcreator won't talk to my test phone: (android studio does talk to the the test phone but won't download the APK file because of the 4k/16k issue)

18:01:15: The deployment AVD "TestPhone" cannot be started.
18:01:15: Error while building/deploying project QtWeather (kit: Android QtAndroid Clang arm64-v8a)
18:01:15: When executing step "Deploy to Android device"

Any help on ether would be good.

Thanks

piervalli

If you build APK without deploy, can you install with adb install app.apk?

SMF-Qt

@piervalli

Yes that seems to work:

/opt/android/sdk/platform-tools/adb install android-build-debug.apk

daemon not running; starting now at tcp:5037
daemon started successfully
Performing Streamed Install
Success

SMF-Qt

@SMF-Qt

I now have a new phone device in qtcreator and it gives me the option to use wifi for the connection.
The phone icon in the bottom left corner has a green blob on it with the identity SM-A065F(WIFI).

The debug session progresses a way further now but stops with the following error:

E/AndroidRuntime: FATAL EXCEPTION: qtMainLoopThread
E/AndroidRuntime: Process: org.qtproject.example.QtTest, PID: 21601
E/AndroidRuntime: java.lang.UnsatisfiedLinkError: dlopen failed: library "libssl_3.so" not found: needed by /data/app/~~p7huhxUk2n2nIc_1qxEgbQ==/org.qtproject.example.QtTest-rOiQXpwVmnydsevwxdlG2g==/base.apk!/lib/arm64-v8a/libQt6Network_arm64-v8a.so in namespace clns-4
E/AndroidRuntime: at java.lang.Runtime.loadLibrary0(Runtime.java:1090)
E/AndroidRuntime: at java.lang.Runtime.loadLibrary0(Runtime.java:1012)
E/AndroidRuntime: at java.lang.System.loadLibrary(System.java:1765)
E/AndroidRuntime: at org.qtproject.qt.android.QtLoader.loadLibraryHelper(QtLoader.java:478)
E/AndroidRuntime: at org.qtproject.qt.android.QtLoader.lambda$loadLibraries$1$org-qtproject-qt-android-QtLoader(QtLoader.java:554)
E/AndroidRuntime: at org.qtproject.qt.android.QtLoader$$ExternalSyntheticLambda0.run(D8$$SyntheticClass:0)
E/AndroidRuntime: at org.qtproject.qt.android.QtThread.lambda$run$0(QtThread.java:57)
E/AndroidRuntime: at org.qtproject.qt.android.QtThread$$ExternalSyntheticLambda0.run(D8$$SyntheticClass:0)
E/AndroidRuntime: at org.qtproject.qt.android.QtThread$1.run(QtThread.java:25)
E/AndroidRuntime: at java.lang.Thread.run(Thread.java:1119)
I/Process : Sending signal. PID: 21601 SIG: 9

Looks like I need to copy the ssl libraries to a place where they can be included in the project apk file.

SMF-Qt

@SMF-Qt

The ssl libraries are now in the /opt/qt-android/lib directory and the build, deploy and debug session progresses until:

0:23:29: The command "/opt/android/sdk/platform-tools/adb -s 192.168.0.50:5555 pull /system/bin/app_process64 /work/Qt-Android/QtTest-V1.1.5c/application/build/Android_QtAndroid_Clang_arm64_v8a-Debug/android-app-process/app_process" terminated with exit code 1.
10:23:29: Package deploy: Failed to pull "/system/bin/app_process64" to "/work/Qt-Android/QtTest-V1.1.5c/application/build/Android_QtAndroid_Clang_arm64_v8a-Debug/android-app-process/app_process".

Looks like I am missing a component of some sort but I don't know what, suggestions welcome.

thanks

piervalli

in the main put qputenv("QT_DEBUG_PLUGINS", QByteArray("1")); it shows the logs of plugins

int main(int argc, char *argv[])
{
    qputenv("QT_DEBUG_PLUGINS", QByteArray("1"));
   QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;
....
}

SMF-Qt

@piervalli said in Testing Android APK with QtCreator fails with an error.:

qputenv("QT_DEBUG_PLUGINS", QByteArray("1"));

I added that call but no difference. I have a break point set on that line of code (it is the first executable line in my program) and it is not being reached.
I have checked that the Java is linking against my main (renaming it caused the build to fail with a missing symbol error).
When I start the debugger the phone shows a white screen with an android symbol on it and a message about waiting for the debugger it then closes after a few seconds.
The same symbol is present on my phones desktop which when clicked shows the white screen and android symbol briefly, sometimes there is a message about there being a bug in the app,

piervalli

the variable QT_DEBUG_PLUGINS shows logs when Qt loads the libraries, it is useful app crash on startup. To checks it you should checks the log ex. adb logcat findstr "Qt" or similar

SMF-Qt

@piervalli

A lot of data to look at, here are the last few lines that reference QtTest (edited to get passed spam filter), I could not see anything obviously when looking at the log overall.

qt.core.plugin.factoryloader: looking at "libplugins_platforms_qtforandroid_arm64-v8a.so"
qt.core.plugin.loader: Found metadata in lib /data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk!/lib/arm64-v8a/libplugins_platforms_qtforandroid_arm64-v8a.so, metadata=
qt.core.library: "/data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk!/lib/arm64-v8a/libplugins_platforms_qtforandroid_arm64-v8a.so" loaded library
qt.core.plugin.factoryloader: looking at "libplugins_styles_qandroidstyle_arm64-v8a.so"
qt.core.plugin.loader: Found metadata in lib /data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk!/lib/arm64-v8a/libplugins_styles_qandroidstyle_arm64-v8a.so, metadata=
qt.core.plugin.factoryloader: looking at "libplugins_sqldrivers_qsqlite_arm64-v8a.so"
qt.core.plugin.loader: Found metadata in lib /data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk!/lib/arm64-v8a/libplugins_sqldrivers_qsqlite_arm64-v8a.so, metadata=
qt.core.library: "/data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk!/lib/arm64-v8a/libplugins_platforms_qtforandroid_arm64-v8a.so" unloaded library

SMF-Qt

@SMF-Qt

This is the entry for the main QtTest library:

nativeloader: Load /data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk!/lib/arm64-v8a/libQtTest_arm64-v8a.so using class loader ns clns-4 (caller=/data/app/~~XIK_3oK5DKj4Pv2epcGJwQ==/org.qtproject.example.QtTest-z9izm4KcYpYvGHTt3ypwhw==/base.apk): ok

SMF-Qt

@SMF-Qt

Running the adb command that is reported as failing outside of qtcreator reports what seems to be a permissions problem:

adb -s 192.168.0.50:42175 pull /system/bin/app_process64 /work/Qt-Android/QtTest-V1.1.5c/application/build/Android_QtAndroid_Clang_arm64_v8a-Debug/android-app-process/app_process
adb: error: failed to copy '/system/bin/app_process64' to '/work/Qt-Android/QtTest-V1.1.5c/application/build/Android_QtAndroid_Clang_arm64_v8a-Debug/android-app-process/app_process': remote open failed: Operation not permitted

SMF-Qt

@SMF-Qt

I don't know is it is relevant but if I try a Android Virtual Device (AVD) instead of a usb or wifi connected phone I get the following error:

The deployment AVD "TestPhone" cannot be started.

My thinking is if I deploy to a virtual phone device I might get a better perspective on my problem deploying to a real phone.

Can the TestPhone AVD be started outside of QtCreator to test it ?

The Icon shows a yellow blob while on the real phone (usb and WiFi) the blob on the icon is green.

jsulm

@SMF-Qt said in Testing Android APK with QtCreator fails with an error.:

Can the TestPhone AVD be started outside of QtCreator to test it ?

Yes, either from command line or from Android Studio.
See https://developer.android.com/studio/run/emulator-commandline?hl=en

SMF-Qt

@jsulm

Well looks like the idea of using a virtual phone in this case is a non starter:

root [ ~ ]# /opt/android/sdk/emulator/emulator -avd TestPhone
INFO | Android emulator version 35.6.11.0 (build_id 13610412) (CL:N/A)
INFO | Graphics backend: gfxstream
INFO | Found systemPath /opt/android/sdk/system-images/android-28/google_apis/arm64-v8a/
PANIC: Avd's CPU Architecture 'arm64' is not supported by the QEMU2 emulator on x86_64 host.

jsulm

@SMF-Qt said in Testing Android APK with QtCreator fails with an error.:

PANIC: Avd's CPU Architecture 'arm64' is not supported by the QEMU2 emulator on x86_64 host.

Create a x86_64 virtual device and deploy a x86_64 build of your app

SMF-Qt

@jsulm

I could but I think this is a build issue, I think I need to find out more about this "app_process" file that is missing.
I ran strace on qtcreator and re-built the app and the only reference to "app_process" is a test for its existance which failed:

access("/work/Qt-Android/QtTest-V1.1.5c/application/build/Android_QtAndroid_Clang_arm64_v8a-Debug/android-app-process/app_process", F_OK) = -1 ENOENT (No such file or directory)

SMF-Qt

@SMF-Qt

According to Googles AI:

What is app_process?

app_process is a binary found in the /system/bin directory on Android devices. According to Stack Overflow, it's a device binary created by the full device build.

It's the entry point for starting a Java process within the Android runtime environment.
It's used to run applications, often those that need to interact with system-level services or bypass normal Android application lifecycle restrictions.
It can be used to execute JAR files or DEX files within a Dalvik/ART environment.
Essentially, it's how you can run custom Java code as a separate process on an Android device, outside the typical app sandbox.

SMF-Qt

@SMF-Qt

So if I understand what adb and google are telling me the issue is that the operating system on my test phone is blocking adb's access to /system/bin/.

I wonder if this is a Samsung thing the test phone is a Samsung A06 ?