Androidproject add image, error cannot be resolved or was not a field

SDK and ADT are 22.6.2 Version number

Project for 4.4.2

Today, when writing Android code. You add several pictures to project and then use the r.drawable call in your code. Always error cannot be resolved or was not a field

Then I looked at the R.java file under the Gen folder and found that I had added the image resource ID. It's strange to think that this is usually the case when the R.java file cannot be generated.

There is no way to solve my problem by checking the information on the Internet. Then I looked through my code over and over again, and there was nothing unusual at the beginning. Suddenly. When I look at the code in the header of the file again. Found a suspicious code import Android. R; I try to remove this line of code after the sex. Well, now I don't want to make it clear why. But my problem has been conquered, if there is any gaoren know, trouble tell Ah!

Androidproject add image, error cannot be resolved or was not a field