移动加速度计和陀螺仪检查功能

Question

我正在寻找一种正确的方法来检查javascript中移动设备（主要是android和iphone）上是否有加速度计和陀螺仪。

也许通过试图弄清楚函数是否返回一些东西？

Answer 1

你可以试试这个：

if (window.DeviceMotionEvent) {
  window.addEventListener('devicemotion', deviceMotionHandler, false);
} else {
  // This device doesn't support accelerators
}

function deviceMotionHandler(e) {
    var acceleration = e.accelerationIncludingGravity;
    var accelerationX = acceleration.x;
    var accelerationYe.acceleration.y;
    var accelerationZ = acceleration.z;

    if (e.rotationRate) {
      var rotation = e.rotationRate;
      var rotationAlpha = rotation.alpha;
      var rotationBeta = rotation.beta;
      var rotationGamma = rotation.gamma;
    }
}

This文章将更多地阐述这个问题。