No Function

[shenwenbin123]

In my project， use this methods ,The problem of rewarding the red is still unsolved. It could be a compiler problem. Use your code to reward R2. I tried clean and Rebuild and Invalidate, but none of them worked. How to solve?

[shenwenbin123]

Cannot resolve symbol'R2'has been prompted all the time. It does not affect the operation of the project, but only makes the project red and looks uncomfortable.