I created a method that's only called in one place - from `onBindViewHolder()` in a RecyclerView. It was a logical unit of code, and I think that extracting that code block into a method improved readability. However, during a code review, I was advised that the method invocation was expensive, so it would negatively impact performance, and that I should inline the code rather than putting it in a separate method.

I thought the JVM or compiler would optimize this code by inlining the method, but I'm not sure if that's the case on Android. I haven't really been able to find any concrete information about what kind of optimizations the new ART JVM does.

Is invoking a method so expensive on Android that I should avoid it at the cost of readability in places where the method might get called many times? Also, is creating single-use methods like this frowned upon because of the DEX method limit? (this app is already using multidex).

This question is not a duplicate of other similar java questions, because I'm asking specifically about the performance on Android, which has it's own idiosyncrasies.