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I was working on my project last night, I saved it as usual and closed down eclipse. I woke up today to continue with it as it's in for next week and this happens :
I have no idea what to do. Is there any possibility I can get my classes back?
thanks =/
Make sure the project is inside the eclipse workspace folder
Delete the project from eclipse (DON'T SELECT "DELETE PROJECT CONTENTS ON DISK")
Restart eclipse
Import the project
Restarted Eclipse ? Seems like it crashed. Maybe you copy the folder of the project and import it as a new project.
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So I copied a bunch of java projects into my eclipse-workspace, but I cannot refresh the projects because they cannot be seen in the Eclipse. Is there even a way to do it?
I guess you need to use File-Import-Existing_project into the workspace. (apply to each new project). Browse to the location where the .classpath and .project files locates in your project.
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I have an existing Java project and I open it in eclipse.
Now I add a new package in it, and I create java files and write code in the new package.
However, when I try to import class from other existing packages, I failed.
Why?
Almost no info but I think that I know what happens:
Must be that the previous project's code is not in a source folder, instead I think that it's on a normal folder...
Look at Project -> Properties -> Java Build Path -> Source
A parent folder(s) of yoursource code folder(s) must be there.
If whit so little info I've help you to fix your problem you owe me a pizza.
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Since morning my code changes are not being reflected in .apk.
I did not updated anything. I saw some post here pointing out to sdk-tools.
But I haven't touched sdk-tools. What can be the possible reason?
Try clean (Build->Clean Project) and rebuild (Build->Rebuild Project) your solution.
Gradle tends to cache some parts of the .apk to speed-up the building process. In most cases, doing a clean (Build -> Clean Project) will solve such issues :-)
You can also clean all the already-created elements by deleting the /build subdirectory of your project and rebuilding.
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In window Package Explorer I haven't any project(In workspace folder a have a few), I'm trying refresh view, but it's doesn't work, I dont know also how to open a whole project structure from this folder.
Create a new project called exactly the same name as a project you already have. Maybe there is an easier way to do it, but this works just fine if you don't have 625520 projects.
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What I have searched and trying to do is create and add files to a target project automatically from my program, any idea on how to do it? Because so far I can create files and change whatever is necessary but can't see a way to add those to my other project.
You should just be able to write it to the java project directory. If it looks like it didn't work, try pressing Right Click > Refresh on your java project in eclipse.