Strange R.java issue cause drawable resource isn't load correctly

Question

I have some custom drawable but unfortunately a drawable doesn't load when I try to run the app on a device.

• I have tried to clean workspace... Same issue.
• I have tried to remove and re-import the project cleaning the .metadata folder... Same issue.
• I have tried to remove autogen file R.java... Nothing.
• I have tried to change the images used... Nothing.
• I have changed the name... Ops, this time the drawable with the problem start working BUT the same issue happens with another image.

With various test I have noticed that the not-loaded image is always the first in

public static final class drawable {...}

inside the autogenerated file R.java

In detail, the resource image with the address 0x7f020000:

public static final int bt_a_1=0x7f020000;

these addresses are assigned alphabetically so I have solved simply adding another image named a1.png that is not used in the project.

With this workaround all works fine but I don't know what is the cause of this absurd issue.

EDIT

This is an Android Issue fixed since HoneyComb release in change Ia971bb242ceac5e8f9346094009a10f356399ab9

The problem happens due to a low-level resource cache collision bug.

More info at: https://android-review.googlesource.com/#/c/15815/

This problem can happens in all device with OS older than HoneyComb... to avoid the bug in these device, use same strategy that I have described.

Answer 1

That is a known issue, I guess it's solved in Honeycomb.

http://code.google.com/p/android/issues/detail?id=20283