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Trouble Importing android-support-v4.jar

I am trying to do the tutorial Sample Code from the https://developers.google.com/maps/documentation/android/intro page.I import the google-play-services_lib just fine, then I import the /extras/google/google_play_services/samples/maps
At this point I have 2 errors:
The type android.support.v4.app.Fragment cannot be resolved. It is indirectly referenced from required .class files RetainMapActivity.java /MainActivity/src/com/example/mapdemo line 45 Java Problem
The project was not built since its build path is incomplete.
Cannot find the class file for android.support.v4.app.Fragment. Fix the build path then try building this project MainActivity Unknown Java Problem
I figured this was because I did not yet complete all the steps and continued. When I add android-support-v4.jar via the method in the sample code, I get over 100 errors, all of which look like this (but with different line #s and paths):
R cannot be resolved to a variable BasicMapActivity.java /MainActivity/src/com/example/mapdemo line 42 Java Problem
The only deviation from the tutorial that I took was my android-support-v4.jar was located in sdk\extras\android\support\v4
If there is anything you think I should try, or a bug that you know of, please tell me. Also if there is anymore helpful information I can give, just say so.
Edit:
I looked more closely at the code, and there was no R.java in the gen folder. Might explain why nothing could find it.

OK, first of all, know that Eclipse messes up with resources and R.java file many times.
Now,add the android.support.v4 as stated in the tutorials, you'll get your 100+ errors of R cannot be resolved. Now see if import android.R or import package_name.classname.R statement is present anywhere? Please delete these all
Now take a backup of the project somewhere, delete the project and make a new one. Now, copy the folders -- lib/libs, src, res, and Androidmanifest.xml from the backup to the new project folder (replace them). Now refresh the project in eclipse. It should work!

Try three things
Right click on the map project and under android tools select add support library.
if still not resolved
Select project properties and check android private libraries and android support v4 under the order and export tab
if still not resolved
In the class which is giving error remove the import statement for the R.java file and press ctrl+shift+O then select and import the R file with project name

How to fix issue when I import Android project to Eclipse I get package name instead project name?

Sometimes, when I try in Eclipse (JUNO) to import Android project from existing source I get in list instead Project Name - package Name. For example instead project named MyProg i get com.demo.agent.datasrc.MyMainClass. How can I fix it?
I tried to rename folder name and .project file its works but its messy workaround.
Please, help

According to Wenhui: "Import as Existing project to workspace instead of android project. You probably need to set android build target after that"

Can't build IMarketBillingService.aidl for inApp purchase

I try to import com.android.vending.billing.IMarketBillingService. But I got the error:
The import com.android.vending.billing.IMarketBillingService cannot be resolved.
I have got another project where I do exactly the same thing and it works perfectly. I copied the files I need for in-app purchase to the new project. That means the data have to be correct. (I replaced the package name) I check multiple times wether I forgot a class. A few days ago I copied the files for a colleague and it works as well.
I tried cleaning and freshing the project as well.

I fixed this by unchecking all the builders on the project properties, hit OK, then check them all again and hit OK. Thanks a lot, Google!

I had this same problem as well. I found that putting in the .aidl before any in-app billing sources in to your project it will generate the .java.
When you try to reference that .java file before it's created your project will contain errors. Because you have errors it won't build your resources, ie R.java or the IMarketBillingService.java.

You can also just delete the gen folder in eclipse, this should trigger a rebuild by the eclipse plugin and create the corresponding java class.

The following is what solved this problem for me:
The documentation on how to set up in the IInAppBillingService.aidl file is vague:
Copy the IInAppBillingService.aidl file to your Android project.
If you are using Eclipse: Import the IInAppBillingService.aidl file into your /src directory.
If you are developing in a non-Eclipse environment: Create the following directory
/src/com/android/vending/billing and copy the IInAppBillingService.aidl file into this directory.
To me, this implied that if I was in Eclipse I should put it in the root of my src directory, but if not then I needed to put it in their specified package. So, I put the IInAppBillingService.aidl in the root of my /src directory and it had all of the failures. That was the problem.
I don't know why the docs are written like that, but the solution was to put this file into the proper package directory which is com.android.vending.billing as is declared inside the .aidl file. Then it was successfully generated and all of the other files built properly.

I had this problem, here is what saved me:
Create a new directory named 'aidl' under 'src/main/'. It should look like 'src/main/aidl'.
Add a new package name 'com.android.vending.billing' to the directory 'src/main/aidl'
Copy 'IInAppBillingService.aidl' into the package created above. In the end, it should look similar to the image below.
References
https://code.google.com/p/android/issues/detail?id=56755
https://stackoverflow.com/a/22769862/2615737

Download Source Code from following link, compare your code with downloaded code, I am sure you will fix your issue.
http://www.anddev.org/resources/file/2875

At the end I uses a generated java file of a older project instead of the IMarketBillingService.aidl. Now it works.

In Eclipse at least, what you have to do is change the Java compiler settings(since this is a compiler error).
Try changing the Compiler compliance level from 1.5 to 1.6 or 1.7. It worked for me.

Import the whole "android-sdk-macosx/extras/google" folder and all its projects. The "com.example.dungeons.Dungeons" project should compile ok now.

I tried some of the methods here but didn't work for me.
What worked out for me is a simple Clean, then Build All.

In my case, I had to select Android Project Target from Project Properties>Android>Project Build Target.
Apparently, after my last upgrade of Eclipse, I didn't download the API level that I used to work on the project. As a result, Eclipse could not resolve the last used API level, and resulted in error.

I had this frustrating problem when migrating to a new machine. What worked for me was to build using "ant debug" in the command line to generate the billing services files.
http://developer.android.com/guide/developing/building/building-cmdline.html

Android: R.drawable not showing my image?

In my android 2.2 app, I've added my image to the res/drawable-mdpi folder. However, I cannot seem to access it using R.drawable.. As far as I know, there isn't any additional configuration I need to do - any help?

I figured this out. The issue was that the project was importing android.R instead of using the generated R file - if you encounter this problem, check your imports to make sure the correct package/file is being imported.

You need to use a fully qualified name when importing the generated R file. Check your import statements.
Take the following package statement:
package me.rhys.example;
Then the generated R file can be imported using:
import me.rhys.example.R;

I had the same problem for a different reason. In my case I had illegal characters in the image file name and hadn't noticed the console message complaining about it.
Once I'd renamed icon-1.png to icon_1.png all was well.

Have Faced the same sort of error, instead of importing contents (pictures) properly, I copied to drawable-hdpi folder, which in turn wasn't generating R Constant ID, you have to import it, rather than just dropping it there.

First click Build -> Rebuild Project so you get help directly from Gradle.
Then please check if your file-based resource name must contain only lowercase a-z, 0-9, or underscore.

If you would like to import a file, for example an image file then you need to go to the res/drawable-XXXX and right click on the folder and then select "import" and in the setup select general files and go to the folder where the images are and select the files that you want to import... Netbeans does this automatically but the eclipse lack this feature

With me it worked after the following steps
Configure -> SDK Manager -> Android SDK -> SDK Tools -> Checked NDK -> Apply
Restart Project

Props to Andy Hin
This issue can happen if "android.R" was imported.
Just check your imports and delete the "android.R" line.
It worked for me.

No generated R.java file in my project [duplicate]

This question already has answers here:
Developing for Android in Eclipse: R.java not regenerating
(64 answers)
Closed 9 years ago.
I am doing the Notepad tutorial, exercise 2. I started by creating a new Android project and chose Create from source to import the downloaded source files for the excercise.
But now I get many errors in Eclipse, and the problem is that there is no generated R.java class. How can I solve this? The folder gen/ is empty.
I have errors on Notepadv2.java and in res/layout/note_edit.xml and both seems to be related to the fact that the generated R.java is missing.
Here is my import statements in Notepadv2.java:
import android.R;
import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
They are created by the Eclipse command Ctrl+Shift+O.

Go to Project and hit Clean. This should, among others, regenerate your R.java file.
Also get rid of any import android.R.* statements and then do the clean up I mentioned.
Apparently Jonas problem was related to incorrect target build settings. His target build was set to Android 2.1 (SDK v7) where his layout XML used Android 2.2 (SDK v8) elements (layout parameter match_parent), due to this there was no way for Eclipse to correctly generate the R.java file which caused all the problems.

After one whole day trying to find why R file was not generated, I found that after install Android SDK Tools r22 a new option in Tools was available: Android SDK Build Tools.
After installing it R file was generated again.

now you have imported android.R instead of your own R... Try to take a look on your "problems" view if you have errors in one of your xml files... get rid of the import android.R and comment out all usages of R.*
Cleaning should help when your project has no other errors, so check your xml files or file naming in your res folders

Probably u might be using a incorrect SDK version. Right click on your project. Select Properties-->Android. Note that 2.2 is the latest SDK. Check it and see if it gets compiled...
Edit
Also Do a clean after that

I Had a similar problem
Best way to Identify this problem is to identify Lint warnings::
*Right Click on project > Android Tools > Run Lint : Common Errors*
That helps us to show some errors through which we can fix things
which make R.java regenerated once again
By following above steps i identified that i had added some image
files that i have not used -> I removed them -> That fixed the
problem !
Finally Clean the project !

I colleague of mine has this problem - a restart of eclipse fixed it.

Update Android SDK Tools in Android SDK Manager for revision 22.0.1.
It worked for me.

Remove the 'import R.java' line from your code. Its done by Eclipse in order to solve the problem.
Go to "note_edit.xml" file. Wherever you find "match_parent" as an attribute value, replace it with either "fill_parent" or "wrap_content".
Do a clean build. R.java will be generated automatically.
If you got this problem, it means "match_parent" property is not supported in your content. Instead, "fill_parent" is used.
"fill_parent: The view should be as big as its parent (minus padding). This constant is deprecated starting from API Level 8 and is replaced by match_parent. "

Do you have installed the android plugin ?
Your project must be of the android type.

This is actually a bug in the tutorials code. I was having the same issue and I finally realized the issue was in the "note_edit.xml" file.
Some of the layout_heigh/width attributes were set to "match_parent" which is not a valid value, they're supposed to be set to "fill_parent".
This was throwing a bug, that was causing the generation of the R.java file to fail. So, if you're having this issue, or a similar one, check all of your xml files and make sure that none of them have any errors.

I just had a problem where a previously working project stopped working with everything that referenced R being posted as errors because R.java was not being generated.
** * CHECK THE CONSOLE VIEW TOO **
I had (using finder) made a backup of the main icon (not even used)
so one of the res folders (hdpi) had
icon.png
copy of icon.png
Console indicated that "copy of icon.png" was not a valid file name.
No errors were flagged anywhere else - no red X in the res folders....
but replacing the spaces with "_" and it is all back to normal....

I have faced this issue many times. The root problem being
The target sdk version is not selected in the project settings
or
The file default.properties (next to manifest.xml) is either missing or min sdk level not set.
Check those two and do a clean build as suggested in earlier options it should work fine.
Check for errors in "Problems" or "Console" tab.
Lastly : Do you have / eclipse has write permissions to the project folder? (also less probable one is disk space)

I've also experienced such issues as R.java being missing, and also eclipse complaining there are errors in my code (displaying red X icon against class files) when there were no errors.
The only method I've found for solving this is to clean the project by selecting Project > Clean
This seems to solve the issue for myself, running Eclipse 3.5.2

yeah i have the same problem.i fixed it by
selecting Project from the tool bar clean the project
also reset the build automatic option
some times needed to change the name of xml file match format [a-z][0-9]
capital letters must be changed

It seems that when you change to the latest SDK (2.2) building no longer generates an R.java file. Or at least not in the way we're used to. To solve this delete the package underneath the gen folder and clean without building. This solves the issue for me.

I've got that problem because of some internall error in Android plugin. When I've tried to open some layout xml, I've got error:
The project target (Android 2.2) was not properly loaded.
Fortunatelly in my case restarting Eclipse and cleaning the project helped.

This could also be the problem of an incorrect xml layout file for example. If your xml files are not valid (containing errors) the R file will not re-generate after a clean-up. If you fix this, the R file will be generated automatically again.

According to my experince i can summarize :
1.The problem is mainly refering to syntax issues that can be
occured on xml files.
2.You might copy the AndroidManifest.xml accidently to subfolders .
1.One file is an extension undefined .
After checking all of these Go to Project->Clean or just remove the /bin and /gen folders.

Just Restart the Eclipse will solve this Issue as the workspace will be freshly Build ! go to
File -> Restart
Its the easiest way to avoid frustration by going it into Build,properties,blah blah.....

Here's another one: I was just about to cry, but managed to get my beloved R.java back:
I hadn't updated anything in my Android installation for quite a while. I needed a feature and ran the SDK Manager. Besides what I needed I basically checked everything it wanted to update. Afterwards my R.java disappeared in Eclipse.
To make it short, in the SDK Manager there was a new entry "Android SDK Build-tools" that I guess wasn't there the last time I had updated. It's kind of an obvious name, really. After I installed that one Eclipse gave me my R.java back.

java .... than debug..
or
Remove the 'import R.java' line from your code. Its done by Eclipse in order to solve the problem.
Go to "note_edit.xml" file. Wherever you find "match_parent" as an attribute value, replace it with either "fill_parent" or "wrap_content".
Do a clean build. R.java will be generated automatically