1.?self.webView.UIDelegate = self;

2. 實現(xiàn)代理在本地打開NSOpenPanel，并將解決回調(diào)回去

- (void)webView:(WKWebView*)webView runOpenPanelWithParameters:(WKOpenPanelParameters*)parameters initiatedByFrame:(WKFrameInfo*)frame completionHandler:(void(^)(NSArray *_NullableURLs))completionHandler{

? ? NSOpenPanel* panel = [NSOpenPanel openPanel];

? ? if(@available(macOS10.12, *)){

? ? ? ? panel.allowsMultipleSelection = parameters.allowsMultipleSelection;

? ? }else{

? ? ? ? [panelsetAllowsMultipleSelection:NO];? //是否允許多選file

? ? }

? ? if(@available(macOS10.13.4, *)){

? ? ? ? panel.canChooseDirectories = parameters.allowsDirectories;

? ? }else{

? ? ? ? panel.canChooseDirectories=NO;? //是否允許選目錄

? ? }

? ? panel.allowedFileTypes = @[@"png", @"jpg", @"BMP", @"TIFF"];//圖片類型

? ? NSModalResponseresult = [panelrunModal];

? ? if(result ==NSModalResponseOK){

? ? ? ? completionHandler([panelURLs]);

? ? }else{

? ? ? ? completionHandler(nil);

? ? }

//? ? [panel beginWithCompletionHandler:^(NSModalResponse result) {

//? ? ? ? if (result == NSModalResponseOK) {

//? ? ? ? ? ? completionHandler([panel URLs]);

//? ? ? ? }

//? ? }];

}