typeerror:undefined is not an object (evaluating 'torch.switchstate')

[761114234]

I use:
"dependencies": {
"react": "16.3.1",
"react-native": "0.55.4",
"react-native-torch": "^1.1.4"
},

...
import Torch from 'react-native-torch';
...
Torch.switchState(true);
...

Same error in android:
Possible Unhandled Promise Rejection(id:0):
typeError:undefined is not an object(evaluating 'Torch.switchState')

[EYproductions]

Same problem as you

[samyachour]

Try the manual install instructions

EDIT:

Found a similar thread, the consensus seemed to be you have to rebuild your app. You can't just add a library and then reload the bundler.

[ajaymarathe]

Hey Rebuilding the app works for me :)
so try it out

react-native run-android then try it should work