AsyncStorage not fulfilling promise

[ghost]

Issue
I am using NetInfo and asyncstorage in my project.
The promise of NetInfo works fine, after getting the response from NetInfo I'm getting the value of a flag from AsyncStorage.The issue is sometimes the response (flag from Asyncstorage) is resolved, sometimes it doesn't. It happens on the very first launch of the application always.
And my application requires that the promise should be returned from Asyncstorage .

The following code executes inside React Native component lifecycle's:
componentWillMount(){
this.setState({loading:true});
NetInfo.isConnected.fetch().then(isConnected => {
console.log('isconnected ' + (isConnected ? 'online' : 'offline'));
(isConnected?this.setState({net:true}):this.setState({net:false}))
// Alert.alert('Netwrok',this.state.net)

}).then(()=>{
global.internetStatus=this.state.net;
console.log('going in db');

 AsyncStorage.getItem('@DATABASE', (err, result) => {
   this.setState({data:result})
   console.log('result is',result,err);
  // Alert.alert('Database',err,result)
   if(result==1&&this.state.net==false){
    console.log('1st case',result,this.state.net);
    }
    else if(result==1&&this.state.net==true){
      console.log('2st case',result,this.state.net);
      
    }
    else if(result!==1&&this.state.net==true){
      console.log('3st case',result,this.state.net);
      this.getData();                
    }
    else{
      console.log('4th case',result,this.state.net);
    }
 });

})

Environment:
OS: macOS Sierra 10.13.1
Node: 8.4.0
npm: 3.10.10
Watchman: 4.7.0

Packages:
react-native: 0.50.3
react: 16.0.0

Target Platform:Android(6.0)

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