iPhoneX和Notch检测

时间:2017-11-10 16:05:14

标签: javascript ios iphone iphone-x

使用Javascript;如何检查用户设备是否为iPhoneX?

此外,如何确定横向位置时iPhone的“缺口”位置是什么?

有一些很棒的文章:https://webkit.org/blog/7929/designing-websites-for-iphone-x/

...但是这些往往会利用在撰写本文时许多移动浏览器本身不支持的尖端功能。

2 个答案:

答案 0 :(得分:27)

所以我想出了一种用Javascript检测iPhoneX的方法。我的流程还会根据用户设备方向检查Notch的位置:

https://codepen.io/marknotton/pen/NwpgBK

(function(window){

  // Really basic check for the ios platform
  // https://stackoverflow.com/questions/9038625/detect-if-device-is-ios
  var iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;

  // Get the device pixel ratio
  var ratio = window.devicePixelRatio || 1;

  // Define the users device screen dimensions
  var screen = {
    width : window.screen.width * ratio,
    height : window.screen.height * ratio
  };

  // iPhone X Detection
  if (iOS && screen.width == 1125 && screen.height === 2436) {

    // Set a global variable now we've determined the iPhoneX is true
    window.iphoneX = true;

    // Adds a listener for ios devices that checks for orientation changes.
    window.addEventListener('orientationchange', update);
    update();
  }

  // Each time the device orientation changes, run this update function
  function update() {
    notch();
    iphoneXChecker();
  }

  // Notch position checker
  function notch() {

    var _notch = '';

    if( 'orientation' in window ) {
      // Mobile
      if (window.orientation == 90) {
        _notch = 'left';
      } else if (window.orientation == -90) {
        _notch = 'right';
      }
    } else if ( 'orientation' in window.screen ) {
      // Webkit
      if( screen.orientation.type === 'landscape-primary') {
        _notch = 'left';
      } else if( screen.orientation.type === 'landscape-secondary') {
        _notch = 'right';
      }
    } else if( 'mozOrientation' in window.screen ) {
      // Firefox
      if( screen.mozOrientation === 'landscape-primary') {
        _notch = 'left';
      } else if( screen.mozOrientation === 'landscape-secondary') {
        _notch = 'right';
      }
    }

    window.notch = _notch;
  }

})(window);

// Bespoke functions:
// The above functions have no jQuery Dependencies.
// The below code uses jQuery solely for this quick demo.
if ( window.iphoneX === true ) {
  $('body').addClass('iphoneX');
}
function iphoneXChecker() {
  if (window.notch == 'left') {
    $('body').removeClass('notch-right').addClass('notch-left');
  } else if (window.notch == 'right') {
    $('body').removeClass('notch-left').addClass('notch-right');
  } else {
    $('body').removeClass('notch-right notch-left');
  }
}

我不禁觉得这只是小黑客的组合。你可能会注意到;我的Javascript并不完全符合高标准,我确信有更好/更清洁的方法来做到这一点。

我很乐意收到我未考虑过的问题的反馈和解决方案。

如果你只想检查iPhoneX(忽略Notch),这应该可以胜任:

https://codepen.io/marknotton/pen/MOpodJ

(function(){

  // Really basic check for the ios platform
  // https://stackoverflow.com/questions/9038625/detect-if-device-is-ios
  var iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;

  // Get the device pixel ratio
  var ratio = window.devicePixelRatio || 1;

  // Define the users device screen dimensions
  var screen = {
    width : window.screen.width * ratio,
    height : window.screen.height * ratio
  };

  // iPhone X Detection
  if (iOS && screen.width == 1125 && screen.height === 2436) {
    alert('iPhoneX Detected!');
  }
})();

答案 1 :(得分:0)

iPhone X和11的宽高比为9:19.5:

9 / 19.5 = 0.4615384615.toFixed(3) = "0.462"

让我们使用window.screen在所有iPhone X和11上尝试一下。

X,Xs,Xs Max(显示缩放:缩放),11 Pro,11 Pro Max(显示缩放:缩放):

375 / 812 = 0.4618226601.toFixed(3) = "0.462"

Xs Max(显示缩放:标准),XR,11、11 Pro Max(显示缩放:标准):

414 / 896 = 0.4620535714.toFixed(3) = "0.462"

所以...

let iPhone = /iPhone/.test(navigator.userAgent) && !window.MSStream
let aspect = window.screen.width / window.screen.height
if (iPhone && aspect.toFixed(3) === "0.462") {
    // I'm an iPhone X or 11...
}

请记住,window.screen始终以纵向返回尺寸,而不考虑活动设备的方向。