问题
I am trying to add a Library to an existing project inside eclipse. I am keeping the Project Folder itself and the Library Folder in a folder marked "ANDROID" on my desktop. When I try to Import > Existing Code into Workspace > Select "ANDROID".. the only project that gets added is the App itself and NOT the library. I even try to add the library on its own and it will show up on the import list but will not have a "ticked box" with the option of "Finish". I even right clicked my App - Properties > Android > and noticed that the library is there with a red "X" and does not allow me to search for a new library. What am I doing wrong? This Identical App and library is working with the same version of eclipse for a friend and not me.
回答1:
Make sure that the libraries and the project are at the same place, i.e.
- Copy the libraries in the same folder as your project
- Import the libraries (file > Import > Existing Project in workspace)
- Open properties of library > Android and select
Is Library - Open project properties > Android > Add (library)
- Select the library
- save the properties
If this does not work for you copy the jar files from its lib folder and paste it in the projects lib. This should only be done if the above method doesn't work
回答2:
Import Library project in eclipse . Then right click on project and go to properties->Android (Menu on left side) --> At the bottom(below project build target) you will see a check box named is Library Check that box. Now you've made your project a library .
Then in your orignal project where you want to add library go again to to properties->Android (Menu on left side) --> At the bottom(below project build target) Click add button and you will find that library project visible.
回答3:
This happens when you import the project from some location. If we import some project then it doesn't refer to the supporting library of that workspace. So always check the check box( copy projects to workspace) Go to file>import project>browse>select a project>Check the copy project into workspace. Hope it solve the issue.
回答4:
A late answer, although I thought of giving an in-depth answer to this question.
- First switch your folder structure from Android to Project.
- Now search for the libs folder inside app - build folder.
- Once you have pasted the .jar file inside libs folder. Right click on the jar file and at end click on Add as library. This will take care of adding compile files('libs/library_name.jar') in build.gradle
Now you can start using the library in your project.
来源：https://stackoverflow.com/questions/15018977/cannot-add-library-to-android-project-in-eclipse