java.lang.UnsatisfiedLinkError reported on Android 4.3、4.4 devices

[AndSync]

objectbox Version 1.4.4

java.lang.UnsatisfiedLinkError
Native method not found: io.objectbox.query.Query.nativeFind:(JJJJ)Ljava/util/List;

 io.objectbox.query.Query.nativeFind(Native Method)
 io.objectbox.query.Query$4.call(Query.java:255)
 io.objectbox.query.Query$4.call(Query.java:252)
 io.objectbox.BoxStore.callInReadTx(BoxStore.java:675)
 io.objectbox.BoxStore.callInReadTxWithRetry(BoxStore.java:620)
 io.objectbox.query.Query.callInReadTx(Query.java:304)
 io.objectbox.query.Query.find(Query.java:252)
 com.taoche.qctt.cache.db.NewsReadDbHelper.getNewsReadList(NewsReadDbHelper.java:80)
 com.taoche.qctt.app.App.putNewsReadSet(App.java:99)
 com.taoche.qctt.app.App.onCreate(App.java:79)
 com.stub.StubApp.onCreate(SourceFile:111)
 android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1009)
 android.app.ActivityThread.handleBindApplication(ActivityThread.java:4632)
 android.app.ActivityThread.access$1800(ActivityThread.java:141)
 android.app.ActivityThread$H.handleMessage(ActivityThread.java:1298)
 android.os.Handler.dispatchMessage(Handler.java:102)
 android.os.Looper.loop(Looper.java:136)
 android.app.ActivityThread.main(ActivityThread.java:5336)
 java.lang.reflect.Method.invokeNative(Native Method)
 java.lang.reflect.Method.invoke(Method.java:515)
 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687)
 dalvik.system.NativeStart.main(Native Method)

[greenrobot-team]

Notes: The SM-N7506V is the Galaxy Note 3 Neo, Exynos 5260 Hexa. Presumably ARM 32-bit, but could not find official docs.
The OPPO R7007 is the Oppo R3, Qualcomm Snapdragon 400, is definitely ARM 32-bit.

So this does not look like an architecture issue as other 32-bit ARM devices work fine.

Works fine on x86 Android 4.4.4 emulator (tested using example project). May only happen on actual ARM device.

@AndSync Does a similar crash occur on newer devices as well?
-ut

[greenrobot]

Additional question: Do you know if this exception occurs once per device only (e.g. 2nd app start will be OK)?

[sandsaber]

Reporting. Always crash
Device Asus ZenPhone 4 (ASUS_T00Q) https://www.gsmarena.com/asus_zenfone_4_a450cg_(2014)-6428.php
OS: 4.4.2
Version 1.5
PS> Asus have Intel Atom Z2520 (x86 chip)

 java.lang.UnsatisfiedLinkError: Couldn't load objectbox from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/.apk", zip file "/data/data/***/code_cache/secondary-dexes/.apk.classes2.zip", zip file "/data/data/***/code_cache/secondary-dexes.apk.classes3.zip", zip file "/data/data/***/code_cache/secondary-dexes/.classes4.zip"],nativeLibraryDirectories=[/data/app-lib/, /vendor/lib, /system/lib, /system/lib/arm]]]: findLibrary returned null
        at java.lang.Runtime.loadLibrary(Runtime.java:358)
        at java.lang.System.loadLibrary(System.java:526)
        at io.objectbox.internal.NativeLibraryLoader.<clinit>(NativeLibraryLoader.java:65)
        at io.objectbox.BoxStore.<init>(BoxStore.java:186)
        at io.objectbox.BoxStoreBuilder.build(BoxStoreBuilder.java:352)
        at io.objectbox.BoxStoreBuilder.buildDefault(BoxStoreBuilder.java:396)
        at .app.Application.setupObjectBoxApplication.java:110)
        at  .app.Application.onCreate(Application.java:92)
        at .app.Application_.onCreate(Application_.java:30)
        at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1007)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4400)
        at android.app.ActivityThread.access$1500(ActivityThread.java:138)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1296)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:149)
        at android.app.ActivityThread.main(ActivityThread.java:5077)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
        at dalvik.system.NativeStart.main(Native Method)

[AndSync]

[greenrobot]

Could you check your APKs for native libraries? Are those available for the same ABIs like ObjectBox?

ALL libraries must be available for an ABI like x86. E.g. if you would mix ARM libs (Android can emulate those on x86) with native x86, it might be a problem.

[sandsaber]

Checked, everything is fine. I did also check with "objectbox-example".apk, same. And "example" works fine, on Asus ZenPhone 4 (ASUS_T00Q), so I wonder, maybe something with multidex?

[greenrobot]

@sandsaber Are you using any other native libs besides ObjectBox? If so, could you list them according to the APK contents in the "lib" folder?

Multidex would be surprising, but who knows...

Does it make any difference if you do a fresh install (app not present on deivce) vs. an update (app already present)?

[sandsaber]

@greenrobot Will be this enough? We do using voip library, http://www.linphone.org/technical-corner/liblinphone/downloads

Does it make any difference if you do a fresh install (app not present on deivce) vs. an update (app already present)?

No, for Asus ZenPhone 4 (ASUS_T00Q) no difference.

├───arm64-v8a
│       libbctoolbox.so
│       libgnustl_shared.so
│       liblinphone.so
│       libmediastreamer_base.so
│       libmediastreamer_voip.so
│       libmsopenh264.so
│       libmswebrtc.so
│       libobjectbox.so
│       libortp.so
│       librsjni.so
│       libRSSupport.so
│       libsqlcipher.so
│
├───armeabi
│       libbctoolbox.so
│       libgnustl_shared.so
│       liblinphone.so
│       libmediastreamer_base.so
│       libmediastreamer_voip.so
│       libmswebrtc.so
│       libortp.so
│       libsqlcipher.so
│
├───armeabi-v7a
│       libbctoolbox.so
│       libgnustl_shared.so
│       liblinphone.so
│       libmediastreamer_base.so
│       libmediastreamer_voip.so
│       libmsopenh264.so
│       libmswebrtc.so
│       libobjectbox.so
│       libortp.so
│       librsjni.so
│       libRSSupport.so
│       libsqlcipher.so
│
├───mips
│       librsjni.so
│       libRSSupport.so
│
├───x86
│       libbctoolbox.so
│       libgnustl_shared.so
│       liblinphone.so
│       libmediastreamer_base.so
│       libmediastreamer_voip.so
│       libmsopenh264.so
│       libmswebrtc.so
│       libobjectbox.so
│       libortp.so
│       librsjni.so
│       libRSSupport.so
│       libsqlcipher.so
│
└───x86_64
        libobjectbox.so
        librsjni.so
        libRSSupport.so
        libsqlcipher.so

[greenrobot]

You should always have the same libs in all the folders. Try to exclude those incomplete/outdated ones: armeabi, mips, x86_64 (google "ABI filter") from your APK and check if that already helps.

[sandsaber]

@greenrobot Thanks! Abi filter helps:

ndk {
            abiFilters  "armeabi-v7a", "x86","x86_64", "arm64-v8a"
        }

Works like charm!