Details
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Bug
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Resolution: Done
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P1: Critical
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None
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5.10.1
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Qt android 5.10.1, qt creator 4.5.2 (not tested if this happens with just the command line), windows 7 64-bit compilation host, nexus 6 (android 6.0) and pixel 2 (android 8.1) devices, NDK 10e, targetting android API 21, custom manifest has been configured with the project name put into the application name, the activity name, the run name and the final part of the package name.Qt android 5.10.1, qt creator 4.5.2 (not tested if this happens with just the command line), windows 7 64-bit compilation host, nexus 6 (android 6.0) and pixel 2 (android 8.1) devices, NDK 10e, targetting android API 21, custom manifest has been configured with the project name put into the application name, the activity name, the run name and the final part of the package name.
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Android
Description
In an android application with a custom manifest, if you have a library file in a "libs" subdirectory then compiling and testing works fine until that library is updated, after the library is updated the application will no longer run at all and will crash instantly at startup with the following debug output:
I art : Late-enabling -Xcheck:jni D AndroidRuntime: Shutting down VM E AndroidRuntime: FATAL EXCEPTION: main E AndroidRuntime: Process: org.qtc.qttestapp, PID: 13124 E AndroidRuntime: java.lang.RuntimeException: Unable to instantiate application org.qtproject.qt5.android.bindings.QtApplication: java.lang.ClassNotFoundException: Didn't find class "org.qtproject.qt5.android.bindings.QtApplication" on path: DexPathList[[zip file "/data/app/org.qtc.qttestapp-2/base.apk"],nativeLibraryDirectories=[/data/app/org.qtc.qttestapp-2/lib/arm, /data/app/org.qtc.qttestapp-2/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]] E AndroidRuntime: at android.app.LoadedApk.makeApplication(LoadedApk.java:578) E AndroidRuntime: at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4680) E AndroidRuntime: at android.app.ActivityThread.-wrap1(ActivityThread.java) E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1405) E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102) E AndroidRuntime: at android.os.Looper.loop(Looper.java:148) E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5417) E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) E AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "org.qtproject.qt5.android.bindings.QtApplication" on path: DexPathList[[zip file "/data/app/org.qtc.qttestapp-2/base.apk"],nativeLibraryDirectories=[/data/app/org.qtc.qttestapp-2/lib/arm, /data/app/org.qtc.qttestapp-2/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]] E AndroidRuntime: at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) E AndroidRuntime: at java.lang.ClassLoader.loadClass(ClassLoader.java:511) E AndroidRuntime: at java.lang.ClassLoader.loadClass(ClassLoader.java:469) E AndroidRuntime: at android.app.Instrumentation.newApplication(Instrumentation.java:981) E AndroidRuntime: at android.app.LoadedApk.makeApplication(LoadedApk.java:573) E AndroidRuntime: ... 9 more E AndroidRuntime: Suppressed: java.lang.ClassNotFoundException: org.qtproject.qt5.android.bindings.QtApplication E AndroidRuntime: at java.lang.Class.classForName(Native Method) E AndroidRuntime: at java.lang.BootClassLoader.findClass(ClassLoader.java:781) E AndroidRuntime: at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) E AndroidRuntime: at java.lang.ClassLoader.loadClass(ClassLoader.java:504) E AndroidRuntime: ... 12 more E AndroidRuntime: Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
The only way to workaround this issue seems to be (this must be done after the failed execution) generate a new android manifest file from the run tab and to change the application identifier (just changing the existing manifest file data is not sufficient). After doing this workaround, the application will start fine, but as development involves changing the library, this is extending the time required to perform any testing.