I made a folder called libs to my working space.
I copied the android-support-v4.jar in it.
Pressed right on it Build Path > Add to Build Path.
Next i added a library and there it needs the Viewpager.
Afterwards i cleaned my project, but i cann't access android.support.v4.view.ViewPager.
Eclipse don't find android.support as well
Solutions?
You should add the library to your build path after you copy the file in the libs directory.
Once you copy the file in libs directory, right click on project, build path, libraries and select the libs directory of the project and add it.
You can then import the classes.
Related
I imported an Android project into Eclipse (Custom ADT). During the import process, I chose to copy project into Workspace.
My project could compile and run well but after sometime, it stopped working. When I check in the 'Problems' View, I see that it still looks for the BIN folder in the folder from which the project was imported and it can't find the library it wants to reference.
Aren't Libraries copied along with the project in Android? How do I fix this?
A good way to add external JARs to your Android project or any Java project is:
Create a folder called libs in your project's root folder - you already had this
Copy your JAR files to the libs folder
Now right click on the Jar file and then select Build Path > Add to Build
Path, which will create a folder called 'Referenced Libraries' within your
project
By doing this, you will not
lose your libraries that are being referenced on your
hard drive whenever you transfer your project to another computer.
You need to place the Libraries into your libs folder before you copy/import. Because if you just added the Library over the Build-path its just copy the Reference, not the Library itself.
I am beginner in android. My client gives me a sample project as reference. In that project have an extra folder 'android dependency’ and that contain a jar file 'annotation.jar' .How can I add the very same jar to my project dependency folder? Any one please helps me!
Find "libs" directory in your project. Those will contain physically those jar files. Android Dependency will indicate that how many libraries are associated with current project.
When you find "libs" directory, right click on jar files, and you will find "Build Path" and then add them to build path. will solve your problem.
Edit
Go to the SDK Manager within eclipse (Window --> Android SDK Manager) and installed the Android Support Package which is found in the Extras folder.
Follow this: Project->RightClick->Properties->BuildPath and Add External jar then browse for particular jar file and Add.
Just copy it in your libs folder and refresh your project. Remember it should be libs not lib. Also remove it from your "external jars" path from Project->RightClick->Properties->BuildPath
Edit :
And also try this
Also remove android.jar file to your build path.
I was trying to add the loopj .jar library into my project, in Eclipse v3.7.2
First I added the .jar into the "lib" directory, right clicked on it and picked "add to build path". It compiles fine but when executing I get an error "Could not find class 'com.loopj.android.http.AsyncHttpClient'.
So I remove the .jar from the build path, and move it into the "libs" directory.
No need to add the the build path when it's in the "libs" directory, this time it compiles fine and executes fine too.
So what is the subtile difference between the "lib" directory & "add to build path" vs "libs" directory?
So what is the subtile difference between the "lib" directory & "add to build path" vs "libs" directory?
Android's current build tools (Eclipse and command-line) expect that JARs are in a libs/ directory. It will automatically add those JARs to your compile-time build path. More importantly, it will put the contents of the JARs into your APK file, so they will be part of your run-time build path.
Using lib/ and mucking with your build path manually will solve the compile-time problem, but then your JAR contents are not in your APK and therefore will not be available to you at runtime.
Citing: http://tools.android.com/recent/dealingwithdependenciesinandroidprojects
If you are still referencing jar libraries manually instead of putting them under libs/ be aware of the following:
If the project is a Library project, these jar libraries will not be automatically visible to application projects. You should really move these to libs/
If the project is an application, this can work but you must make sure to mark the jar files as exported.
I am working on an app which uses Commonslang.jar libraries. I was trying to setup it on a new system with newly installed Eclipse.The project is not showing any error But when I run the project it force closes with NoClassDefFoundError at each point where I use Commonslang lib.
I dont know how to fix this problem.Please help?
I think there are "lib" folder in your project directory so just change it "libs" instead of "lib" and clean project and check it..
> Note: No need to build path for any third party library
You need to create libs folder in your project and copy that jar file there. Then in eclipse, right-click on that jar file (which is in libs folder) select Build Path and then select Add to Build Path.
Remember: if you are using a jar file in your Android Library Project, and associating that library project with your regular UI
project, it won't be enough. You must need to include that jar file
(as described above) in both of your projects (Android Library and UI
project) to make it work.
Have you added the jar to the Java Build Path?
Go to the Properties for the Project and select Java Build Path -> Libraries tab then add the external jar there.
I have made an android project in eclipse. This project has a library project:
the library project (marked with "is library") has included a jar file.
this library project does a lot of stuff with the use of the jar file.
in code everything is fine.
The problem is that the reference to the jar file doesn't exist anymore when it is compiled and installed to my phone.
When i add the jarfile also to my base project. Then the program works.
However, i don't believe that this is the right solution.
So what does i do wrong?
You should add a libs folder to your project
Then, add the jar to the folder and right click on the .jar file and go to Build Path, and select Add To Path or Build To Path. This way the library will be a part of your project. This should help.
The library jar you used in your Android Library Project must be manually added to the dependent application project's build path, not the Android library project build path itself, check out API here