Get react-native view dimensions

gistfile1.js

var UIManager = require('NativeModules').UIManager;

// in your component, use whatever ref you have defined on the
// view you want to measure
UIManager.measure(this.refs.view.getNodeHandle(), (frameX, frameX, frameWidth, frameHeight, pageX, pageY) => {
  // do something with the measured values
});

you can (now?) directly do:

this.refs.view.measure((frameX, frameY, frameWidth, frameHeight, pageX, pageY) => {

});