How to fix Android SDK Content Loader stuck at 0% in Eclipse

Have you encountered the case where Eclipse hangs upon startup, in particular when you are developing an Android applications with Android SDK?

When that happens you see "Android SDK Content Loader" stuck at 0% in the bottom right hand of the Eclipse status bar.

There are four things you can try...

Solution 1:

1. Make sure that eclipse is not active. If it is active kill eclipse from the processes tab of the task manager 
2. Check if the adb process is running. If so, kill the adb process, and restart Eclipse. 

 Solution 2: (Works best for me, and likely the safest)

1.  Make sure that eclipse is not active. If it is active kill eclipse from the processes tab of the task manager
2. From the command line run: C:\eclipse\eclipse.exe -clean

Solution 3:

1. Make sure that eclipse is not active. If it is active kill eclipse from the processes tab of the task manager
2. Open %USERPROFILE%/ (You can locate this folder from desktop) (or paste it into Explorer on windows)
3. Go to .android folder (This may be a hidden folder)
4. Delete the folder "cache" which is located inside .android folder
5. Delete the file ddms.cfg which is located inside .android folder
6. Start Eclipse

Solution 4: (Most drastic, and one I have not tried)

Go to your workspace directory \workspace\.metadata\.plugins\org.eclipse.core.resources\\.projects

1. Copy .projects folder to make a temporary backup.
2. Now Delete .projects folder from workspace directory. (you will not loose your projects)
3. Start Eclipse and wait for all progress ends at right/bottom corner. Once completed all processes, shutdown Eclipse.
4. Paste .projects folder which you have backup earlier to \workspace\.metadata\.plugins\org.eclipse.core.resources\ directory. Overwrite existing .projects folder.
5. Start Eclipse again. And all will work.

In above scenario Eclipse will automatically find your earlier projects. You do not have to import them manually.

Good Luck