Issue know the current time

[raouldandresy]

Hi :)
i'm trying to do a progress bar that use the percentage, so i need the duration and the currenti time. But i'm using a while loop that is not working, anyone can help?

_statusChanged(status) {
console.log(status);
RNAudioStreamer.duration((err, duration)=>{
if(!err){
console.log(duration);
this.setState({duration: duration});
} //seconds
})
while(status === 'PLAYING'){
RNAudioStreamer.currentTime((err, currentTime)=>{
if(!err){
console.log(currentTime);
this.setState({currentTime: currentTime});
}//seconds
})
}
}