03.webview_flutter 文件上传
macOS 文件上传
macOS 下 WKWebView 点击文件上传无响应，这个问题看起来是与 WKWebView 相关《macos - How can you get input file to work in a WKWebView? - Stack Overflow》：
回答一：
Here is the 100% working solution for WKWebview "File Upload" Problem.
You just need to implement the UIDelegate:
- (void)webView:(WKWebView *)webView runOpenPanelWithParameters:(WKOpenPanelParameters *)parameters initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSArray<NSURL *> *URLs))completionHandler;
Follow this link for more description about this delegate: RunOpenPanel Delegate
回答二：
This is a known bug in WKWebView.
https://bugs.webkit.org/show_bug.cgi?id=137759
When attempting to upload files by way of an
<input>tag there is no action taken by WebKit on behalf of the user allowing them to input files to upload. The root cause of this seems to be that the "handleRunOpenPanel" is just unimplemented for OS X clients.
网络资源
- dart - File Upload does not work inside Webview, Flutter - Stack Overflow：Android 平台解法
- [webview_flutter] not working choose file (input type file) · Issue #27924 · flutter/flutter
- Flutter: File Upload using WebView on Android - The Programming Way
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