Android, java class not found exception

Question

I developed an android application which includes some classes, when I tried to run application I see this in log Could not find class 'com.voice.NevisaWebService', referenced from method com.voice.Main.upload but application starts, when I do something in app that needs NevisaWebService class this error appears and application stops working java.lang.NoClassDefFoundError: com.voice.NevisaWebService, what does it mean? I have this class in my wokspace and everything is write why does this error appears?

here is full logcat:

enter image description here

Ok have you Package named Voice? and Where is the class named NavisaWebserice? — MDroid, Nov 07 '13 at 11:35
Go to Project--> right click--> Properties--> Java BuildPath--> Order Export--> Tick all check boxes.. Clean Project and Run it again — MDroid, Nov 07 '13 at 11:36
if I do that I get this error `Conversion to Dalvik format failed with error 1` — ehsan mozafari, Nov 07 '13 at 11:42

score 1 · Accepted Answer · answered Nov 07 '13 at 10:09

1

Try this:

Go to Project/Properties/Java Build Path/Order and Export -- Make sure there's a check in front of Android Dependencies and the support library, if you use it.Mark all checkboxes.Click on Apply and clean the project.

This worked for me.Hope this helps.

answered Nov 07 '13 at 10:09

Siddharth_Vyas

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now I get this error `Conversion to Dalvik format failed with error 1` – ehsan mozafari Nov 07 '13 at 10:13
Did you add any external library? – Siddharth_Vyas Nov 07 '13 at 10:20
yeah, I attached some external library – ehsan mozafari Nov 07 '13 at 10:21
Then check all that from checkbox and apply and then clean project. – Siddharth_Vyas Nov 07 '13 at 10:22
I did, and still having same problem – ehsan mozafari Nov 07 '13 at 10:24
Check this : http://stackoverflow.com/questions/2680827/conversion-to-dalvik-format-failed-with-error-1-on-external-jar and http://stackoverflow.com/questions/11883178/conversion-to-dalvik-format-failed-with-error-1-exporting-apk and also this : http://android.foxykeep.com/dev/fix-the-conversion-to-dalvik-format-failed-with-error-1-with-adt-14 – Siddharth_Vyas Nov 07 '13 at 10:26
Try to delete all the jar file from your java build path and then again attach from lib folder..and then clean the project – Siddharth_Vyas Nov 07 '13 at 10:26
Check this : http://saigeethamn.blogspot.in/2011/11/android-conversion-to-dalvik-format.html – Siddharth_Vyas Nov 07 '13 at 12:04

Saj · Answer 2 · 2013-11-07T10:22:47.637

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Please check whether all your Activities included in the AndroidManifest.xml file otherwise add to it.
add environment variable for JAVA path from e.g, C:\Program Files\Java\jre6\bin

edited Nov 07 '13 at 10:22

answered Nov 07 '13 at 10:16

Saj

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I have just one activity (main), what do you mean by your second way? – ehsan mozafari Nov 07 '13 at 10:45
that means setting JAVA_PATH in your system – Saj Nov 07 '13 at 10:56
right click on 'Computer' from windows start then go to properties, and then advance settings, u'll find environment variable – Saj Nov 07 '13 at 11:04

score 0 · Answer 3 · answered Nov 07 '13 at 10:21

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Check for imports and visibility of class.class access modifier must be public.and then try to clean and rebuilt.

answered Nov 07 '13 at 10:21

Pankaj Arora

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Android, java class not found exception

3 Answers3