reactjs - Fetch not working on React Native Android debug -

i'm trying create simple reactnative app play around graphql , rn on android (i'm familiar getting work on iphone).

but i'm running problem -- root component places get request api. although request works when spin xcode simulator, fails when run android version on phone.

the android/ios versions identical. 2 index files both use react-native-router-flux , identical, , import shared components.

here's simplified code of component:

  constructor(props) {     super(props);     this.state = {       source: 'mygraphqlendpoint'     }   }    componentdidmount() {     if (this.props.drill) { return null; }      this.serverrequest = fetch(this.state.source)       .then((result) => result.json())       .then((json) => {         this.setstate({           drill: json.data.drill         });       });   }    componentwillunmount() {     this.serverrequest.abort();   }    render() {     const { drill } = this.state;     if (!drill) { return null; }     ... view stuff   } 

on ios simulator, works perfectly. on android phone, never sets state, , doesn't past if (!drill) line. if instead set state expected api data directly (instead of making actual call), android app works fine (with non-live data).

the phone connected internet.

any idea what's wrong?

ps -- i've tried number of variants, including:

• changing request have 1 .then, calls response.json().data.drill.
• assigning response variable defined outside of request, , setting state equal (which sets state looks response buffer [42, 36, ... can't printed screen.

no dice.