使用UIWebView上传照片 [英] Upload photo with UIWebView

问题描述

我想直接从UIWebView上传照片，其中包含用于文件上传的HTML表单。当我点击按钮时，我会选择拍照或选择现有照片。但当我点击这两个选项中的任何一个时，我得到

I would like to upload a photo directly from UIWebView that has a HTML form for file upload. When I click on button I get options to take photo or choose existing. But when I click any of these two options I get

警告：尝试提供< UIImagePickerController：0x15c15e00> on < UINavigationController：0x155a2660> ，其视图不在窗口层次结构中！

Warning: Attempt to present <UIImagePickerController: 0x15c15e00> on <UINavigationController: 0x155a2660> whose view is not in the window hierarchy!

可以请任何人都能解释我这些警告......

Could please anyone can explain me these warning...

提前谢谢你！

推荐答案

这是iOS 8上的一个错误，当webview以模态方式呈现时会发生。

It's a bug on iOS 8, that happens when the webview is presented modally.

唯一的选择权现在它不是以模态方式呈现webview，你可以用导航控制器呈现它或者切换rootviewcontroller

The only options right now it not to present the webview modally, you can present it with a navigation controller or switching the rootviewcontroller

在这里你可以阅读更多关于bug和建议的解决方案

Here you can read more about the bug and a proposed solution

iOS 8 SDK：模态UIWebView和相机/图像选择器

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