I want to include the guava-07.jar in my project.I tried configuring build paths,copying it to library folder,linking source and used add external jars.
The import com.google.common.eventbus.Subscribe cannot be resolved keeps showing.
I have a project with guava.jar in its private library.Can I put that in this project.Or is there another problem.Please help me understand.
after referring some questions in stack and in google, i got something like this hope these may help you
as you have done before just remove all your dependencies and add build path and clean project once if it dint work just go through the things
The easiest way to deal with such a library in Eclipse is to create a User library and add the user library to your project (right click project: Build Path -> Add Library -> User Library).
Here is a short guide to generating a User Library:
Open the menu entry Preferences -> Java -> Build Path -> User Libraries
Press New..., enter a name (e.g. 'Guava')
Press Add JARs... and search for the JAR files you downloaded
(Unzip the Guava archive beforehand, inside you'll find the file guava-r07.jar. Select that in this dialog, preferably after moving it to a more desirable location)
Now select Source Attachment -> Edit..., and find the path to the file guava-src-r07.
If you want to, you can repeat this process for the JavaDoc location, pointing it to the javadoc folder from the guava distribution
Press OK.
and some other suggestions are like
use Maven to import the libraries. It makes it simple to upgrade dependencies later and, once you install m2eclipse, Eclipse will pick the Guava libraries up for you. All you need in your Maven pom.xml to "use Guava" is something along the lines of the following in your dependencies section.
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>15.0</version>
</dependency>
just go through the references also for more details
The very basics for using Guava
How to add Guava to Eclipse project
Adding Google Guava to Android project - significantly slows down the build
If you are using eclipse, just copy guava-07.jar into libs folder(create one if you don't have it).
Select the files in windows explorer and drag them to the libs folder in eclipse. This will also add them to the Android Private Libraries.
Related
hello i am quite new to Android development and i want to learn how to use the google Maps API v2. After trying numerous tutorials, i always seem to have a problem with the google play services library. Somehow, Eclipse can't import it properly. I tried this tutorial https://github.com/thecodepath/android_guides/wiki/Google-Maps-Fragment-Guide and when i try to include Google Play Services project as a library, first it all goes nice and smooth, i get a green tick in the Project Properties - Android - Library window, but when i close it i still get lots of "can't be resolved to a type" errors. I return to the window where i add the library and i see a red "X" and a question mark under "project" instead of the green tick. I tried several other tutorials and i always have a problem with this library. I like this tutorial and i would really like to make it work. I also tried to manually copy the library folder in the workspace but that didn't work either. I googled like crazy trying to find an answer but i always find something that i tried before (like manually copying the library in the workspace or something similar). I am quite desperate, i really have no idea why it can't just see the library please help. Also this is my first post to StackOverflow so be gentle :)
later Edit (solved):
when i imported the downloaded project, i kept it on the desktop and thats why it didn't work, after i copied it in the workspace everything worked. Thank you all very much for helping a beginner :)
The important thing in adding a library in eclipse is to remember that your project and the library project need to be in the same workspace.
To solve this follow below ways,
You can copy the google-play-services library project to the same workspace where your main project is there.
else
While importing the library to eclipse remember to check copy projects into workspace which will add a copy of the library to your workspace.
I see a red "X" and a question mark under "project" instead of the
green tick.
The problem is -
The path to your google play services library is not same as the path to your project. It is outside of your project. And so is not recognized by simple import.
Solution - Put the library in the project's libs folder.
NOTE: Just putting the library to the libs folder is not enough.
After you added your library follow these steps -
1) Go to Project -> Properties -> Java Build Path -> Libraries -> Add JARs..
2) Now add your recently added jar to the build path from JAR selection process.
3) Go to Project -> Properties -> Java Build Path -> Order and Export.
4) Put a tick mark in the check box against this library name and press OK.
5) Do Project -> Clean.
if your giving google-Play-Service-lib as a references to your project , try to keep your project and the Google-play services lib should be in same drive.
if your project is on C: drive means place Google-play-services-lib in C:
While making the copy of the entire folder libproject containing google-play-services_lib from eclipse import project by selecting the copied libproject folder in your working place.
For the rest follow the steps in Setting Up Google Play Services
Eclipse
Copy the library project at
<android-sdk>/extras/google/google_play_services/libproject/google-play-services_lib/
to the location where you maintain your Android app projects.
Import the library project into your Eclipse workspace. Click
File > Import, select Android > Existing Android Code into Workspace
and browse to the copy of the library project to import it.
After you've added the Google Play services library as a dependency for your app project, open your app's manifest file and add the following tag as a child of the <application> element:
< meta-data android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
Android Studio
Open the build.gradle file inside your application module directory.
Add a new build rule under dependencies for the latest version of play-services
eg
...
dependencies {
compile 'com.google.android.gms:play-services:9.2.0'
}
apply plugin: 'com.android.application'
Source developers.google.com
i want to import an existing Android Project(a small App that should be added to another Android Project soon) into another Android Project in order to test.
I tried several things for example:
export the first project als jar and add the external jar to build path of the second
added the first project to the second in the build path of the second project
but nothing worked
and i did not forget to mark the checkbox at "order and Export"
i'll be very happy, if anyone could help me ;)
hannes
Right click on your project Build Path>Configure Build Path> "Select prject tab"
then add the project :D
Hope it helps
Have fun
there are a couple of different solutions imo.
If applicable - you could mark the first small project as a library and just add it to the newer project (properties -> android -> checkbox/add lib)
OR
You access the app if its already installed on the device
OR
You copy the source code/package to the new project
OR
You compile the old project to a dex file and load the classes/methods via the DexClassLoader
OR
export as JAR file, as you already tried - but you cant export any resources (although there are workarounds if there arent many resources)
Thats all I can think of right now, if you have more specific question to one of the solutions, just ask =)
In my Android app I use:
import javax.xml.bind.JAXBContext;
But I get:
The import javax.xml.bind cannot be resolved
I do have com.viewstreet.java.eclipse.jaxbplugin.JAXBPlugin in my plugins list.
#commonsware is correct , just add respctive JAXB API jars in lib folder of your projet or in case of maven project add dependency in pom file
<!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
viz in my case on linux, solved the issue
Go to https://javaee.github.io/jaxb-v2/ and download the standalone distribution (link at the very bottom of page).
jaxb-ri-2.3.1.zip or whatever version is the latest shall be downloaded. Unzip it and copy the jaxb-ri\mod\jaxb-api.jar from the unzipped folder into the plugins folder of your eclipse installation directory.
Go to eclipse, open your project, right click project name in Projects panel (left most) and choose Properties => Build Path
Under Libraries tab, select Classpath and then click Add External JARs button. Browse and select the file you just copied to eclipse's plugins folder.
Click Apply and Close
Just import your required javax.xml.bind classes and your project shall be built instantly.
Put the JAR in the project's libs/ directory, then add it to the build path via the Add JARs button. That's my standard recipe, and it seems to work, and it has the advantage of putting the JAR in the right spot for command-line builds as well.
At this point, though, I suspect that you will get a compile error. Generally, you cannot import classes in the java and javax packages into an Android project.
Download jax-b.jar and add it as external jar in your project.
Any import cannot be resolved in Java means a class you referenced is not found anywhere on the classpath. You need the library you're trying to use added to your classpath. In Eclipse, that's in project properties in the Java Build Path => Libraries tab. If you don't have the jar file that contains the API you're trying to use, you probably need to get it from http://jaxb.java.net/.
Adding a library/JAR to an Eclipse Android project
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
In my Android app I use:
import javax.xml.bind.JAXBContext;
But I get:
The import javax.xml.bind cannot be resolved
I do have com.viewstreet.java.eclipse.jaxbplugin.JAXBPlugin in my plugins list.
#commonsware is correct , just add respctive JAXB API jars in lib folder of your projet or in case of maven project add dependency in pom file
<!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
viz in my case on linux, solved the issue
Go to https://javaee.github.io/jaxb-v2/ and download the standalone distribution (link at the very bottom of page).
jaxb-ri-2.3.1.zip or whatever version is the latest shall be downloaded. Unzip it and copy the jaxb-ri\mod\jaxb-api.jar from the unzipped folder into the plugins folder of your eclipse installation directory.
Go to eclipse, open your project, right click project name in Projects panel (left most) and choose Properties => Build Path
Under Libraries tab, select Classpath and then click Add External JARs button. Browse and select the file you just copied to eclipse's plugins folder.
Click Apply and Close
Just import your required javax.xml.bind classes and your project shall be built instantly.
Put the JAR in the project's libs/ directory, then add it to the build path via the Add JARs button. That's my standard recipe, and it seems to work, and it has the advantage of putting the JAR in the right spot for command-line builds as well.
At this point, though, I suspect that you will get a compile error. Generally, you cannot import classes in the java and javax packages into an Android project.
Download jax-b.jar and add it as external jar in your project.
Any import cannot be resolved in Java means a class you referenced is not found anywhere on the classpath. You need the library you're trying to use added to your classpath. In Eclipse, that's in project properties in the Java Build Path => Libraries tab. If you don't have the jar file that contains the API you're trying to use, you probably need to get it from http://jaxb.java.net/.
Adding a library/JAR to an Eclipse Android project