I downloaded twitter sample application in AndroidTwitterSample repository and imported my eclipse. I am trying to run that sample application and i got the error: java.lang.NoClassDefFoundError in logcat.
The error is based on jar file missing.you must place jar files rite place.
Create a folder named libs inside the root directory of your project and put twitter4j jar inside.
Then include new jar via Project Properties -> Java Build Path -> Libraries -> Add Jars.
Remove any old reference to twitter4j jars.
Clean and launch.
I hope this will helpful to you.
see my post- No class defination found error even if there is no issues & let me know if this not working in your side.
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I'm trying to run one of my old android project (Eclipse project).
It uses Facebook lib, google-play-services-lab and android-maps-util-master.
Both Facebook lib and my project MyanmarWatch_ is showing red ! on them.
I don't know how to fix since I don't see any error within them.
I got solution. I just forgot to check Java Build Path. 2 jar files are missing and I imported them.
I want to do Login with facebook.But when I am going to Create a new Android Project with Facebook Login I got the error of the Jar mismatch.
when I create new android application that time there is no any errors, but when add the FacebookSDK to the newly create project. that time it gives
Jar mismatch! Fix your dependencies | Unknown Android Dependency Problem
I tried everything to change the java compiler level but not getting.
I tried project properties > Java compiler > In this level I do all changes of the java versions, but not success.
any help please?
Thank you.
its mean there is multiple jar file(with same name) in you Project and Library Project. just Delete that jar file form Project.(not from Library Project)
or rename your one of jar file.(i ll sagest you delete jar file instead of rename)
I have been trying to run the sample code available at http://samples.google-api-java-client.googlecode.com/hg/tasks-android-sample/instructions.html
I have included all jar file needed to resolve the dependencies. My project doesn't contain any error but when i try to the program it give me following error:
java.lang.NoClassDefFoundError:
com.google.api.client.googleapis.auth.oauth2.GoogleCredential
I can see that the above class file is present in my reference libraries still the code is not running. Trying to solve this from 2 days. Please help
I think you should drop these jars in a folder named /libs at the root of your project. See this SO question: How can I use external JARs in an Android project?
Have you included your libs in the java build path and checked it in the Order and Export Tab?
i.e
Project > Properties > Java Build Path > Order and Export > and finally, checkmark your imported library.
I'm testing the sample app for Mobile Express Checkout Library with Android.
I'm getting java.lang.NoClassDefFoundError: com.paypal.android.pizza.ResultDelegate
The error is on this Pizza.java line: PayPal.fetchDeviceReferenceTokenWithAppID(this, appID, server, new ResultDelegate());
I'm confused, i didnt find any info about that error on google, and also on the faq on paypal and x.com, so i don't know how to solve it.
I simply opened the sample code project and executed it.
This is the link to the project and the library: https://www.x.com/sites/default/files/PayPal_MECL_1.0_Android-Developer-Package_0.zip
There are only three reasons you will ever get this error:
The class genuinely doesn't exist. If you are using code from an official example and getting this, make sure you have the latest build of the library
You have not added the jar to your build path. To fix this, right click on the jar in Eclipse, and do Build Path ► Add to Build Path.
Your jar is not in the /libs folder. This happens when you have added the jar to the build path, but newer versions of ADT need it to be in /libs. Put it there and it will automatically be added to the build path. If it isn't, try doing a Clean build via ant clean or Project ► Clean in eclipse.
Mostly, such errors occur because newer versions of the ADT require all external jars to be in the libs folder.
By looking at the project you linked to, I can see the paypal jar in the project root. Instead, try moving it into a /libs folder. This should solve your problem.
I think you have not exported library jar from the configure build path section of eclipse.
create libs directory in project's directory and add move PayPal_MECL.jar to /libs. goto project properties and remove existing PayPal_MECL entry from libraries
i want to convert some data into JSON to transmit. but since the android methods about JSON are quite tedious. i create a user library and import some JSON jar files i always use in JSE project. then when i launch the android project, Android Packaging Problem occurs. in the problem tag, it says like " Description: Conversion to Dalvik format failed with error 1 Location: Unknown Type: Android Packaging Problem".
i check out the problem on the internet, and try to fix it by CLEANING the project. however, it doesn' work.
somebody has some experience dealing with this problem?
pls help me.
thanks in advance.
i import the JSON jar by adding new library in the Java Build Path
Do not do that.
Instead, create a libs/ directory in your project and put the JAR there. If you are on the latest version of the ADT plugin for Eclipse, having your JAR be in libs/ will automatically add it to your build path and will automatically include the JAR's contents in your APK.
select project
right click go to properties and select java build path.
2.select libraries tag
3.click add external jar. select the jar file . CLICK OK. That's all you need to do.