How to fix ClassNotFoundException?

Question

This is something strange... I have updeted sdk version to 25 and after that tried to lunch app.. and got such error

FATAL EXCEPTION: main
Process: com.fittingroom.newtimezone, PID: 2465
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.fittingroom.newtimezone/com.fittingroom.newtimezone.view.ActivitySplash}: java.lang.ClassNotFoundException: Didn't find class "com.fittingroom.newtimezone.view.ActivitySplash" on path: DexPathList[[zip file "/data/app/com.fittingroom.newtimezone-2/base.apk"],nativeLibraryDirectories=[/data/app/com.fittingroom.newtimezone-2/lib/arm, /vendor/lib, /system/lib]]
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3093)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)
   at android.app.ActivityThread.access$1100(ActivityThread.java:221)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:158)
   at android.app.ActivityThread.main(ActivityThread.java:7224)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.fittingroom.newtimezone.view.ActivitySplash" on path: DexPathList[[zip file "/data/app/com.fittingroom.newtimezone-2/base.apk"],nativeLibraryDirectories=[/data/app/com.fittingroom.newtimezone-2/lib/arm, /vendor/lib, /system/lib]]
   at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
   at android.app.Instrumentation.newActivity(Instrumentation.java:1095)
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3083)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
   at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
   at android.os.Handler.dispatchMessage(Handler.java:102) 
   at android.os.Looper.loop(Looper.java:158) 
   at android.app.ActivityThread.main(ActivityThread.java:7224) 
   at java.lang.reflect.Method.invoke(Native Method) 
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
Suppressed: java.lang.ClassNotFoundException: com.fittingroom.newtimezone.view.ActivitySplash
   at java.lang.Class.classForName(Native Method)
   at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
   at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
        ... 12 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available

I have already updated all dependency to 25 but anyway I get this error.

Error said that I don't have such class, but I have

What am I doing wrong? How to fix this issue?

Thanks

did u try looking into your manifest file ? if yes and still problem doesnt resolve,please add your manifest file code here too,and your ActivitySplash code also, btw why are are you using activity under fragments? is ActivitySplash a fragment or activity? — Ak9637, Nov 17 '16 at 09:23
@AlekseyTimoshchenko- There is a chrome plugin - Better Stack Exchange.. which provides great flexibility for editing stuff. Try it.:) — Chirag Parmar, Nov 17 '16 at 09:26

score 4 · Accepted Answer · answered Nov 17 '16 at 09:26

4

Well I faced the same I just used :

File -> Invalidate Caches / Restart

and it worked for me.

answered Nov 17 '16 at 09:26

M.Khouli

3,992
1
23
26

score 0 · Answer 2 · answered Nov 17 '16 at 09:34

I faced this error before: First try this to clean and rebuild your project.

Then open File --> Invalidate Caches / Restart , Click on the blue button Invalidate Caches / Restart.

If this didn't work with u try this solution:

1- add to your build.gradle(Module.app)

 defaultConfig {
         multiDexEnabled true

2- add this in dependencies:

dependencies {
    compile 'com.android.support:multidex:1.0.1'
}

2- In manifest file add this

<application
android:name="android.support.multidex.MultiDexApplication">

It works with me Correctly.

And I think the Problem is that you are using a lot of Libraries in the Gradle ,You might have exceeded the 64K Reference Limit.

score 0 · Answer 3 · answered Nov 17 '16 at 09:34

0

we can get this issues different way,

1.If you use instant run please unchecked its options

2.Add multiDexEnabled true to gradle or add multidex in your project application class

answered Nov 17 '16 at 09:34

Vadivel

780
1
6
21

score 0 · Answer 4 · edited Dec 24 '17 at 22:12

I have the same error and fix it. Because when I created I changed the default MainActivity name but I did not change in the manifest default folder.

<application>
    <activity android:name=".MakeSureYouHaveTheSame'MainActivity'NameHere">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

How to fix ClassNotFoundException?

4 Answers4

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