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Asked: 2026-06-18T15:40:18+00:00

What does this error mean? I’m having this error at runtime. The app crashes

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What does this error mean? I’m having this error at runtime. The app crashes when I try to launch. I am new at Android programming.

I have tried to look through the code and I couldn’t find it. I would appreciate your help.

02-07 14:32:57.967: E/Trace(943): error opening trace file: No such file or directory (2)
02-07 14:32:58.386: E/AndroidRuntime(943): FATAL EXCEPTION: main
02-07 14:32:58.386: E/AndroidRuntime(943): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.quiz/com.example.quiz.Splash}: java.lang.ClassNotFoundException: Didn't find class "com.example.quiz.Splash" on path: /data/app/com.example.quiz-2.apk
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.os.Handler.dispatchMessage(Handler.java:99)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.os.Looper.loop(Looper.java:137)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.ActivityThread.main(ActivityThread.java:5039)
02-07 14:32:58.386: E/AndroidRuntime(943):  at java.lang.reflect.Method.invokeNative(Native Method)
02-07 14:32:58.386: E/AndroidRuntime(943):  at java.lang.reflect.Method.invoke(Method.java:511)
02-07 14:32:58.386: E/AndroidRuntime(943):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-07 14:32:58.386: E/AndroidRuntime(943):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-07 14:32:58.386: E/AndroidRuntime(943):  at dalvik.system.NativeStart.main(Native Method)
02-07 14:32:58.386: E/AndroidRuntime(943): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.quiz.Splash" on path: /data/app/com.example.quiz-2.apk
02-07 14:32:58.386: E/AndroidRuntime(943):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
02-07 14:32:58.386: E/AndroidRuntime(943):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
02-07 14:32:58.386: E/AndroidRuntime(943):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
02-07 14:32:58.386: E/AndroidRuntime(943):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
02-07 14:32:58.386: E/AndroidRuntime(943):  ... 11 more
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1 Answer

  1. Editorial Team
    1. First of all, check if your source is where it is mentioned in the error log.
    2. If it is, check if you’ve made any typing mistakes
    3. If it still isn’t working, it would be easier (In my opinion) to create a new project and rename what is missing (I’ve done this several times already and it has always worked) Of course, make sure you copy all of your code
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