Class couldn't be found

[dipenshah210]

It was running perfectly.. Suddenly I started getting Problems while rendering which states

The following classes could not be found: - com.aigestudio.wheelpicker.WheelPicker (Fix Build Path, Create Class) Tip: Try to build the project.

I tried clean/rebuild project but still it doesn't work.

I was getting another error as well saying resource not found.

The following classes could not be instantiated: - com.aigestudio.wheelpicker.WheelPicker (Open Class, Show Exception, Clear Cache) Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE

android.content.res.Resources$NotFoundException: Could not resolve resource value: 0x7F040003.

I dont know how to solve this problem as I am beginner in using this.