从非全屏 UIWebView 获取 javascript 中的设备高度

本文介绍了从非全屏 UIWebView 获取 javascript 中的设备高度的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我尝试在 非全屏 UIWebview (320x216) 和 javascript 中区分 Iphone 5 设备.我使用屏幕高度作为开关，因为这似乎 仅 方式在 javascript 中执行此操作.>

问题在于，通常的做法是报告 0 或 UIWebview 的高度，而不是设备的高度.

document.body.offsetHeight//返回216screen.availHeight//返回0document.documentElement.clientHeight//返回216window.innerHeight//返回216screen.height//返回0

有人知道这样做的方法吗?不幸的是，我无法控制 UIWebview 的目标 c 代码.

解决方案

我知道你说过你已经尝试过了，但是 screen.availHeight 对于 iPhone 5 返回 568，即使实际 UIWebView 框架要小得多(即 216).我使用的是 iOS 7.

I try to distinguish an Iphone 5 device in a non full screen UIWebview (320x216) from javascript. I am using the screen height as switch as that seems the only way to do this in javascript.

The problem is that the usual way to do this reports either 0 or the height of the UIWebview, not the height of the device.

document.body.offsetHeight //returns 216 screen.availHeight //returns 0 document.documentElement.clientHeight //returns 216 window.innerHeight //returns 216 screen.height //returns 0

Does anybody know of a method to do this? I unfortunately don't have control over the objective c code for the UIWebview.

解决方案

I know you said you tried this already but screen.availHeight returns 568 for an iPhone 5, even when the actual UIWebView frame is much smaller (i.e. 216). I am on iOS 7.