react-native: unable to invoke navigator within facebook LoginManager function -


i new react native , i'm trying invoke navigator after have received user credentials via facebook graph. appreciated :)

so have first class sets navigator , renderscene.

class cupofdoom extends component {   render() {     return (       <navigator         style={{ flex: 1 }}         initialroute={{ name: 'main' }}         renderscene={this.renderscene}       />     );   }    renderscene(route, navigator) {      if(route.name == 'main') {        return <main navigator={navigator}  />      }      if(route.name == 'stats') {        return <stats navigator={navigator} />      }   } }

the code above automatically invoke class main. class 'as seen below' contains custom facebook login button invokes method 'handlefacebooklogin()' when clicked. works fine until try , run this.props.navigator.push({ name: 'stats',}) returns, cannot read property 'navigator'. note works fine if move navigator prop outside of facebook manager login. 

class main extends component {     handlefacebooklogin(routename) {         loginmanager.loginwithreadpermissions(['public_profile', 'email', 'user_friends']).then(       function(result) {         if (result.iscancelled) {           console.log('login cancelled');         }           else {           console.log('login success permissions: '             +result.grantedpermissions.tostring());             const responseinfocallback = (error, result) => {                  if (error) {                   console.log(error)                   console.log('error fetching data: ' + error.tostring());                 }                   else {                   test = result;                     console.log(test.email);                    this.props.navigator.push({                     name: 'stats', // matches route.name                   })                             }           }//response             const inforequest = new graphrequest(             '/me',             {               parameters: {                 fields: {                   string: 'picture,email,name,first_name,middle_name,last_name'                 }               }             },             responseinfocallback           );            // start graph request.           new graphrequestmanager().addrequest(inforequest).start()       }//else        },//function result          function(error) {           console.log('login fail error: ' + error);         }//functionerror       );//loginmanager      }    render() {     return (        <grid>         <row size={2} style={styles.row1}>           <view style={styles.titleholder}>               <text style={styles.welcome}>                 cup of doom <icon active name='ios-cog' style={{color: '#ffffff'}}/>               </text>           </view>         </row>         <row size={1} style={styles.row2}>           <view>             <icon active name='ios-beer' style={{color: '#333333', fontsize: 100, textshadowcolor: '#333333', textshadowoffset: {width: 1, height: 1}}}/>           </view>         </row>         <row size={1} style={styles.row3}>           <view style={styles.fbbutton}>             <button bordered light block onpress={this.handlefacebooklogin.bind(this, "stats")}>               <icon name="logo-facebook" />               <text style={styles.text}>login facebook</text>             </button>           </view>         </row>       </grid>     );   } }

i've included stats class reference.

class stats extends component {   render() {     return (       <view style={styles.container}>         <text style={styles.welcome}>{email}</text>          <touchablehighlight onpress={()=>{this.props.navigator.pop()}}>           <text>back</text>         </touchablehighlight>       </view>     );   } }

again appreciate advice / help.

ok managed solve own question.

so have on press action binds eg 

onpress={this.handlefacebooklogin.bind(this, 'test' )}

within function declare global variable , assign 'this', enable me invoke props.navigator.

handlefacebooklogin(routename) {

  var = this;    loginmanager.loginwithreadpermissions(['public_profile', 'email', 'user_friends']).then(   function(result) {     if (result.iscancelled) {       console.log('login cancelled');     }       else {       console.log('login success permissions: '         +result.grantedpermissions.tostring());         const responseinfocallback = (error, result) => {              if (error) {               console.log(error)               console.log('error fetching data: ' + error.tostring());             }               else {               test = result;                 console.log(test.email);                that.props.navigator.push({name: 'stats'})                }       }//response         const inforequest = new graphrequest(         '/me',         {           parameters: {             fields: {               string: 'picture,email,name,first_name,middle_name,last_name'             }           }         },         responseinfocallback       );        // start graph request.       new graphrequestmanager().addrequest(inforequest).start()   }//else    },//function result      function(error) {       console.log('login fail error: ' + error);     }//functionerror   )//loginmanager

}


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