I've been jumping through hoops trying to include my utility jar in my project. Android documentation clearly states that all the import-via-filesystem should not be necessary (http://developer.android.com/resources/faq/commontasks.html#addexternallibrary) but I've tried all suggestions anyhow; putting in it a libs folder, clean the project, restarting eclipse.
Is there any way I can see how eclipse builds the project; I'd like to see that it actually tries to include my jar.
Build and Clean is not enough, you should add your jar file by configuring the Build Path. Follow these steps:
Right Click on your project
=> Properties
=> Java Build Path ( at left )
=> choose the tab Libraries
=> add jars
=> specify your jar file that you have added it to the lib folder.
Hope it helps and sorry for my English
It seems that adding the jar to the build path isn't enough. You have to copy the jar to the project's folder (like to /libs).
I was never able to solve the problem, but it seems to be caused by the Android cross compiler not being able to correctly process the generated Jar. As a work around I started copying the java files from the utility project into the Android project.
Related
I just got some kind of error when trying to using Action Bar Compat support library to my project, I don't know what's wrong, because I have followed the instructions from this link > http://developer.android.com/tools/support-library/setup.html
So, this is the screen shot of the error ..
I also encountered such problem. My error was:
The container 'Android Dependencies' references non existing library 'C:\development\adt-bundle-windows-x86-20140702\workspace\appcompat_v7\bin\appcompat_v7.jar'
To solve this, I went project>properties>java build path>libraries>add jars>appcompat_v7>libs>, then I selected android-support-v7-appcompat.jar. After this, I went to project>clean. This fixed the problem. Hope you find my hint helpful.
As in the instructions you mentioned, please make sure to follow this step to add .jar files instead of directly go to Properties > Java Build Path > Libraries to add them.
In the new library project, expand the libs/ folder, right-click each
.jar file and select Build Path > Add to Build Path. For example, when
creating the the v7 appcompat project, add both the
android-support-v4.jar and android-support-v7-appcompat.jar files to
the build path.
I just had this issue, when creating a new project. After following the instructions from the link you provided, close your project, then close Eclipse, restart Eclipse, open your project then clean and build your project. This did the trick for me.
These days I used the latest android support library 21 and got the same issue.
I followed the answer of #dazilli,but do not work.
Just now,I updated the JDK from 6 to 7,then it solved the problem.
First of all cleanup a library project and build project check library project has bin files after that clean your project its work for me
andriod platform must be android 5.0 and set 'target=21'
make sure download Extras
In my case the files were in appcombat_v7/lib folder, so what i did is right-click the .jar files (there will be two files select android-support-v4.jar) and then select Build Path>Add to Build Path. What it does is that it adds this file to the Build Path (i.e it will add this file to the "bin folder") which will solve the problem.
I'm trying to use the cwac-loaderex library in my Android application. I cloned the repository and have imported the included project into my Eclipse project.
At this point I don't have any compilation errors in Eclipse, but when I try to run the application in the emulator I get:
03-23 20:34:16.895: E/dalvikvm(652): Could not find class 'com.commonsware.cwac.loaderex.SQLiteCursorLoader', referenced from method com.alwaysorderdessert.AlwaysOrderDessertActivity.onCreateLoader
How do I make sure that these external dependencies are loaded along with my application in the emulator and are also (by extension?) included in my distributed .apk?
Thanks!
Update
I have added the .jar file to my project and included in the build path, so now my project explorer window looks like the following:
However, I'm still getting the same error in the emulator. Any ideas?
Thanks again.
Update 2
After a bit of Googling and thanks to this SO answer I found that I just needed to check off the .jar file in the Java Build Path > Order and Exports tab.
Update 3
As was pointed out by the comment in the answer below, I should have copied the .jar file to the libs/ directory rather than lib/. This makes the other changes unnecessary (i.e., adding the .jar to the build path, selecting it for export). What a difference a letter makes!
Put the JAR in your libs/ directory, and that should be sufficient.
I noticed that my README was out of date, telling you to add it to your Eclipse build path. That was correct a year-and-change ago but is no longer needed and may contribute to your problems. Hence, if you manually adjusted your build path, undo that. I apologize for the stale instructions.
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'm trying to add ACRA to my project and I've followed these steps ACRA Basic Setup but Eclipse is not recognising the #ReportCrashes that it has you create with the class:
I made sure I created a "lib" folder and I added the jar file to it (by drag & drop from a windows explorer), I then right-clicked it and choose Add to Build Path. I even tried to remove the jar file and re-add it and do a Project --> Clean but still nothing.
Any ideas as to what I'm doing wrong?
Here's some screenshots of the Annotations from Eclipse:
I've had the same problem, and I think I've discovered the root of it: I was importing the jar inside SRC folder, instead of importing the one in BUILD folder. Just deleted the first one, reconfigured BUILDPATH to remove the wrong entry, did a clean, copied the right (BUILD FOLDER) jar into the libs folder in my project and then everything went OK
Maybe it helps?
OK I figured out the problem. I had the same issue as you and the problem for me was that I added the source jar and not the build jar from the ACRA archive. It now recognizes the classes from the jar. Rookie mistake :)
Robert,
I updated to R20 of the Android SDK Tools today (Aug 15, 2012) and also upgraded to Eclipse Juno and had similar problems with ACRA and my other jar files.
The way I understand it R17 change the build process that any jar in the '/libs' folder is automatically added to the build path. Which means if you had a jar in the '/libs' folder you need to remove it from you java build path or you get the dreaded "Dalvik 1" build error.
Next, I noticed there is no way to add source or javadoc to jars in the lib folder. So I moved all my jars to a second folder, in my case '/external/jar'. When I moved ACRA-4.2.3.jar to '/external/jar' my project would crash with the same error as yours. So I moved it back to '/libs' and it worked, although I could not add javadoc or source to the ACRA jar.
The conclusion is to place the ACRA jar file in the '/libs' folder. Other jar files may be placed in '/libs' or elsewhere. Also, update Android SDK and Eclipse.
Hope this helps you are somebody,
Fish
I'm trying to use GSON in my project, but my application is crashing, with logcat saying that com.google.gson.Gson cannot be found. I've put import com.google.gson.Gson on my class files, I have gson in my package explorer, and added it by Right click -> build path -> add libraries. It also shows up in Project->properties->java build path->libraries tab->gson. What have I done wrong?
What worked for me: Check the checkbox next to the lib (gson-2.0.jar) in: 'Project Properties' -> 'Java Build Path' -> 'Order and Export' tab. Then do a clean/build.
This adds the exported=true attribute to the classpath entry
<classpathentry exported="true" kind="lib" path="libs/gson-2.0.jar"/>
Have you put the jar file in the libs folder of the project? If not , try moving it there, creating the folder if required. Should be at the same level as the src folder.
I had a similar issue trying to get an app built and that solved it.
I'm using IntelliJ, not eclipse but here is how I did it:
Download the source files from https://google-gson.googlecode.com/files/google-gson-2.2.4-release.zip
Unpack them
Copy them into the "libs" folder of your project. I did this manually by using the terminal but you can do it by going in your project folder located in your computer. Your Project_Name >app >Libs [paste them here]
Go to your editor (IntelliJ in my case) You should see the the following 3 files in the libs folder of the project structure:
gson-2.2.4.jar
gson-2.2.4-javadoc.jar
gson-2.2.4-sources.jar
Open your build.gradle file and insert the following line in the dependencies section:
compile files('libs/gson-2.2.4.jar', 'libs/gson-2.2.4-javadoc.jar', 'libs/gson-2.2.4-javadoc.jar')
Right click on each of the source files and select "Add as Library..."
Use the following options:
Name: name of the jar file
Level: Project Library
Add to Module: select project your adding to
Rebuild project
Build > Rebuild project
Import and use it!
import com.google.gson.Gson;
I have observed today that it doesn't like when you add your library.
The solution that worked for me was to add it as an external jar only. I have observed it by doing the steps described by author of this post i.e. Properties -> Java Build Path -> Libraries -> Add External JARs and point to the downloaded gson library.
I ran into the same issue (when installed SDK 17) ...
The solution is, that you just put the pure jar files into the "libs" folder (without subfolders).
You also don't need to declare them, android wil find them itself. You may need to do a Project > Clean
I had similar problem, but I guess my requirement was more complicated as the GSON libarary was used by an Android Library Project that my main Android project depended on. I have tried both approaches above but none of them worked for me. If I add the GSON jar file directly to the main Android project it works, but that is not what I wanted.
With a bit of investigation I have realised that the GSON jar does not use any dependencies (third party libraries) itself. So my solution was to copy the source file of the GSON project to my Android Library project's src filder and it worked like a charm. so you can use the Source code rather then the binary code. The source code is part of the download in a jar file, just unzip it.
i'm sure you have copied the jar into "libs",
and also added property> Java Build Path >(tab) Libraries, right?
my issue was stupid...
please check other than Gson jar, if you have two stuffs at least in above tab:
android x.x
Android Dependencies (especially this one, i missed this, eclipse show me an error of "could not find class com.google.gson.xx" )
simply do a project copy will solve this problem...
Do not edit .classpath file directly or even put files into lib folders out of Eclipse.
Instead use the Java Build Path->Order and Export tab to select libraries to be exported in the final deployment unit (eg war/apk)
To be on safer side, do a Project->Clean after you change the build path.
I faced the same thing.But the solution was quite easy,just Right-Click on your project->Properies->Libraries->Add external jars->OK and thats it.It solved my problem.hope it will solve yours as well
If Projct Properties -> Java build path -> Add external jars doesn't work and your project is a web project, try adding the gson jar directly to the server lib folder. Example: for apache Tomcat to apache-tomcat/lib.
I have been trying the same thing and read so many answers and tried so many things but to not vial, but i solved this problem by doing just one click and its simple.
1) Add your .jar file in libs folder make sure its libs not lib
2) Clean and Build your project you will see that file under libs folder
3) right click the file and go to build path and select add to build path
Run your project it will work fine. Hope this helps
I am using Android Studio
I had the same problem I had solve it by
select project press f4 from popup
click app and in dependencies
select file dependency and select the three folders which I had pasted in lib directory