Unable to instantiate application com.honjane.app.MyApplication
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坑了一个晚上的crash ,立个flag纪念下
Process: com.honjane.app, PID: 19363java.lang.RuntimeException: Unable to instantiate application com.honjane.app.MyApplication: java.lang.ClassNotFoundException: Didn't find class "com.honjane.app.MyApplication" on path: DexPathList[[zip file "/data/app/com.honjane.app-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.honjane.app-2, /vendor/lib, /data/cust/lib, /system/lib]] at android.app.LoadedApk.makeApplication(LoadedApk.java:531)at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4531)at android.app.ActivityThread.access$1800(ActivityThread.java:135)at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1292)at android.os.Handler.dispatchMessage(Handler.java:102)at android.os.Looper.loop(Looper.java:136)at android.app.ActivityThread.main(ActivityThread.java:5234)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:834)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:650)at dalvik.system.NativeStart.main(Native Method)Caused by: java.lang.ClassNotFoundException: Didn't find class "com.honjane.app.MyApplication" on path: DexPathList[[zip file "/data/app/com.honjane.app-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.honjane.app-2, /vendor/lib, /data/cust/lib, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)at java.lang.ClassLoader.loadClass(ClassLoader.java:497) at java.lang.ClassLoader.loadClass(ClassLoader.java:457)at android.app.Instrumentation.newApplication(Instrumentation.java:976)at android.app.LoadedApk.makeApplication(LoadedApk.java:526)at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4531) at android.app.ActivityThread.access$1800(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1292) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5234) 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:834) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:650) at dalvik.system.NativeStart.main(Native Method)
可以看到application就crash了 所以也别想打出有用的日志,只能一个个排除,需求中只是加入jpush jar,打release包就出现这个问题:
Unable to instantiate application com.honjane.app.MyApplication: java.lang.ClassNotFoundException: Didn't find class "com.honjane.app.MyApplication" on path: DexPathList[[zip file "/data/app/com.honjane.app-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.honjane.app-2, /vendor/lib, /data/cust/lib, /system/lib]]
开始排查:
1、只要加入jpush,就crash。说明和极光推送有关,把极光推送放到老版本测试,正常运行,排除极光推送代码写错,
2、再注释掉新版本的其他新加入的第三方包,只新增加jpush包,还是crash,难得是jar包冲突了,打开jar查看,jpush包中只引入了gson,protobuf,这两个包都没有重复引用。排除包冲突。
3、拆包问题,加入一个jpush包,会增加2700多个size,这些都是在第一个dex中增加了,那么有可能把一部分代码就要放到第二个dex中,如果这些被排挤到第二个dex中的文件正好是application中必须的,那就会找不到文件,这样就会crash了。
顺着这个思路开始排查哪些文件必须在Main-dex中出现,然后配合日志发现端倪:
//过滤日志adb logcat | grep honjane
I/dalvikvm(12348): Failed resolving Lcom/honjane/app/MyApplication; interface 10063 'Lcom/honjane/app/neter/tb;'W/dalvikvm(12348): Link of class 'Lcom/honjane/app/MyApplication;' failed
大意啊,一万只草泥马飞过,查错的时候只看W,E级别的日志,没有查看I级别日志,
可以从上面看到是MyApplication,中有一个tb的neter找不到,反编译查看这个叫tb的neter被放到第二个dex了,坑死了,把tb的neter加入防止混淆清单中,然后放入Main-dex列表,crash解决了。
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