如果浏览器是android webview，如何使用javascript检测？

Question

I am creating a webapp and the user could only have acces with the android webview? Can i detect android webview with javascript?

Answer 1

From http://developer.android.com/guide/webapps/webview.html#EnablingJavaScript

For example, if you're developing a web application that's designed specifically for the WebView in your Android application, then you can define a custom user agent string with setUserAgentString(), then query the custom user agent in your web page to verify that the client requesting your web page is actually your Android application.

Answer 2

var ua = navigator.userAgent.toLowerCase();
var isAndroid = ua.indexOf("android") > -1; //&& ua.indexOf("mobile");
if(isAndroid) {
  // Do something!
  // Redirect to Android-site?
  window.location = 'http://android.davidwalsh.name';
}

Source : http://davidwalsh.name/detect-android

Answer 3

为什么不添加一个每次需要时都会设置的秘密参数？