IOS13之后浏览器获取动作与方向需要用户授权

解决方式

通过点击事件，触发用户主动授权

document.body.addEventListener('touchend',function () {
  if (/(Android)/i.test(navigator.userAgent)) {
    return;
  }else if (typeof (window.DeviceMotionEvent) !== "undefined" && typeof (window.DeviceMotionEvent.requestPermission) === "function") {
      // (optional) Do something before API request prompt.
      window.DeviceMotionEvent.requestPermission().then(response => {
          // (optional) Do something after API prompt dismissed.
          if (response == "granted") {
              // window.addEventListener("devicemotion", (e) => {
              //     // do something for 'e' here.
              // })
              window.addEventListener('devicemotion', false);
          } else {
              alert('您的手机不支持摇一摇ヾ(◍°∇°◍)ﾉﾞ');
          }
      })
  }
});

结论

通过一些交互，引导用户触发浏览器获取动作与方向的授权，在用户同意授权之后，再执行相关操作