N上預置APK失敗提示找不到so檔案
預置APK到系統之後開啟APK會提示： 01-01 12:00:39.537 5326 5326 E AndroidRuntime: Process: com.skype.raider, PID: 5326 01-01 12:00:39.537 5326 5326 E AndroidRuntime: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathListlib] couldn’t find “libSkypeAndroid.so” 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at java.lang.Runtime.loadLibrary0(Runtime.java:972) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at java.lang.System.loadLibrary(System.java:1530) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.util.CrashAndAnrHandler.(SourceFile:19) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.util.CrashAndAnrHandler.saveHandlers(Native Method) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.skylib.SkyLibInitializer.a(SourceFile:115) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.SkypeModule.a(SourceFile:126) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.SkypeModule_SkyLibFactory.get(SourceFile:37) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.SkypeModule_SkyLibFactory.get(SourceFile:11) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at dagger.internal.d.get(SourceFile:47) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.app.BackgroundMode_Factory.get(SourceFile:72) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.app.BackgroundMode_Factory.get(SourceFile:16) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at dagger.internal.d.get(SourceFile:47) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.wakeup.DreamKeeper_Factory.get(SourceFile:48) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.wakeup.DreamKeeper_Factory.get(SourceFile:12) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at dagger.internal.d.get(SourceFile:47) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.wakeup.ForegroundObserver_Factory.get(SourceFile:34) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.wakeup.ForegroundObserver_Factory.get(SourceFile:8) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at dagger.internal.d.get(SourceFile:47) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.SkypeApplication_MembersInjector.injectMembers(SourceFile:160) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.SkypeApplication_MembersInjector.injectMembers(SourceFile:24) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.DaggerSkypeApplicationComponent.inject(SourceFile:2266) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.skype.android.SkypeApplication.onCreate(SourceFile:152) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1027) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5503) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at android.app.ActivityThread.-wrap2(ActivityThread.java) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at android.app.ActivityThreadMethodAndArgsCaller.run(ZygoteInit.java:1063) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924) 01-01 12:00:39.537 5326 5326 E AndroidRuntime: FATAL EXCEPTION: main
[SOLUTION] 這是因為Google在N上對selinux有更嚴格的限制，APK的so檔案被selinux擋住了： 01-01 12:00:39.520000 5326 5326 W om.skype.raider: type=1400 audit(0.0:64): avc: denied { read } for name=“libSkypeAndroid.so” dev=“mmcblk0p22” ino=770074 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:system_data_file:s0 tclass=file permissive=0
參考如下的solution： Add the policy to alps/device/mediatek/common|[platfrom]/sepolicy/basic|bsp|full/xxx.te #====================== untrusted_app.te ====================== allow untrusted_app system_data_file:file r_file_perms;