Hot reload doesn't hot-reload

Question

I activated hot reloading and it\'s not hot-reloading. When I make a change to any Javascript file, the Packager re-runs and the simulator puts a gray bar at the top saying \"H

Answer 1

The hot reloading according to the developers is still in development phase and is quite buggy. You could always do a full re-run of the app but the hot reload works like a charm sometimes and not at all otherwise.

https://facebook.github.io/react-native/blog/2016/03/24/introducing-hot-reloading.html

Word of warning: because JavaScript is a very stateful language, hot reloading cannot be perfectly implemented. In practice, we found out that the current setup is working well for a large amount of usual use cases and a full reload is always available in case something gets messed up.