React-Native : measure a View

Question

I\'m trying to measure a view using a ref, but the width returned is 0 despite the fact that I see the view displayed on the screen (and it\'s far

Answer 1

During the night some guys talked about a (hacky) solution but it solved my problem, found it here: https://github.com/facebook/react-native/issues/953

Basically the solution is to use setTimeout and everything just works magically:

componentDidMount: function() {
  setTimeout(this.measureProgressBar);
},

measureProgressBar: function() {
  this.refs.progressBar.measure((a, b, width, height, px, py) =>
    this.setState({ progressMaxSize: width })
  );
}