CODEWITHSUNDEEP
android
user836026
user836026

Reputation: 11360

Unable to instantiate activity when using signed .apk

My app works fine if I use the unsigned .apk However, if I test it with the signed .apk (the one to be uploaded to Google Play) in device, it throw below error. Is this normal, or I did something wrong.

E/AndroidRuntime( 6613): FATAL EXCEPTION: main
E/AndroidRuntime( 6613): java.lang.RuntimeException: Unable to instantiate activ
ity ComponentInfo{com.myapp/com.myapp.myappActivity}: java.lang.ClassNo
tFoundException: com.mapp.myappActivity in loader dalvik.system.PathClass
Loader[/system/framework/com.google.android.maps.jar:/data/app/com.myapp-2.ap
k]
E/AndroidRuntime( 6613):        at android.app.ActivityThread.performLaunchActiv
ity(ActivityThread.java:1573)
E/AndroidRuntime( 6613):        at android.app.ActivityThread.handleLaunchActivi
ty(ActivityThread.java:1667)
E/AndroidRuntime( 6613):        at android.app.ActivityThread.access$1500(Activi
tyThread.java:117)
E/AndroidRuntime( 6613):        at android.app.ActivityThread$H.handleMessage(Ac
tivityThread.java:935)
E/AndroidRuntime( 6613):        at android.os.Handler.dispatchMessage(Handler.ja
va:99)
E/AndroidRuntime( 6613):        at android.os.Looper.loop(Looper.java:130)
E/AndroidRuntime( 6613):        at android.app.ActivityThread.main(ActivityThrea
d.java:3687)
E/AndroidRuntime( 6613):        at java.lang.reflect.Method.invokeNative(Native
Method)
E/AndroidRuntime( 6613):        at java.lang.reflect.Method.invoke(Method.java:5
07)
E/AndroidRuntime( 6613):        at com.android.internal.os.ZygoteInit$MethodAndA
rgsCaller.run(ZygoteInit.java:867)
E/AndroidRuntime( 6613):        at com.android.internal.os.ZygoteInit.main(Zygot
eInit.java:625)
E/AndroidRuntime( 6613):        at dalvik.system.NativeStart.main(Native Method)

E/AndroidRuntime( 6613): Caused by: java.lang.ClassNotFoundException: com.castva
st.myappActivity in loader dalvik.system.PathClassLoader[/system/framework/co
m.google.android.maps.jar:/data/app/com.myapp-2.apk]
E/AndroidRuntime( 6613):        at dalvik.system.PathClassLoader.findClass(PathC
lassLoader.java:240)
E/AndroidRuntime( 6613):        at java.lang.ClassLoader.loadClass(ClassLoader.j
ava:551)
E/AndroidRuntime( 6613):        at java.lang.ClassLoader.loadClass(ClassLoader.j
ava:511)
E/AndroidRuntime( 6613):        at android.app.Instrumentation.newActivity(Instr
umentation.java:1021)
E/AndroidRuntime( 6613):        at android.app.ActivityThread.performLaunchActiv
ity(ActivityThread.java:1565)
E/AndroidRuntime( 6613):        ... 11 more

Upvotes: 0

Views: 208

Answers (2)

Roy Hinkley
Roy Hinkley

Reputation: 10641

Do you have the activity registered in the Manifest? That error is indicative of a missing Manifest registration - and very common error I might add. This type of error would not be thrown just by changing the signing cert.

EDIT

Check you project properties and make sure your build path includes:

system/framework/com.google.android.maps.jar

Upvotes: 1

Stephan Branczyk
Stephan Branczyk

Reputation: 9375

The capitalization of this looks weird com.myapp/com.myapp.myappActivity

Your class name should start with a capital letter at least: MyappActivity

Upvotes: 1

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