1.通过JS向APP原生传值
- (void)webViewDidFinishLoad:(UIWebView*)webView
{
CGFloat sizeHeight = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"]floatValue];
self.webView.frame = CGRectMake(0,0,SCREEN_WIDTH, SCREEN_HEIGHT);
// 获取JS的上下文
JSContext*context = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
//jumpShowImagesActivity 与服务器约定好的方法名
context[@"jumpShowImagesActivity"] = ^() {
// 获取到JSContext中的参数
NSArray *args = [JSContext currentArguments];
NSString*imageUrl;
NSArray*imageArr;
for(int i = 0; i JSValue *jsVal = args[i]; if(i==0) { imageUrl = [jsVal toString]; }else{ imageArr = [jsVal toArray]; } } NSInteger index = [imageArr indexOfObject:imageUrl]; dispatch_async(dispatch_get_main_queue(), ^{ [[XLImageViewer shareInstanse] showNetImages:imageArr index:index fromImageContainer:self.view title:@[]]; }); JSValue *content = [JSContext currentThis]; NSLog(@"content为: %@",content); }; context.exceptionHandler= ^(JSContext*context,JSValue*exceptionValue) { context.exception= exceptionValue; // 比如把js中的方法名改掉，OC找不到相应方法，这里就会打印异常信息 NSLog(@"异常信息：%@", exceptionValue); }; } 2.APP向html传值 （wkwebview） WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init]; configuration.userContentController = [WKUserContentController new]; [configuration.userContentController addScriptMessageHandler:self name:@"jumpLogin"]; [configuration.userContentController addScriptMessageHandler:self name:@"getUserName"]; [configuration.userContentController addScriptMessageHandler:self name:@"jumpUserInfoPage"]; WKPreferences *preferences = [WKPreferences new]; preferences.javaScriptCanOpenWindowsAutomatically = YES; preferences.javaScriptEnabled=YES; configuration.preferences= preferences; _webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT) configuration:configuration]; _webView.UIDelegate=self; _webView.navigationDelegate = self; 需要服务器先行注册一个方法给APP调用，然后在代理方法中实现传值 - (void)userContentController:(WKUserContentController*)userContentController didReceiveScriptMessage:(WKScriptMessage*)message { NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; NSString*userName = [userDefaultsobjectForKey:@"KEY_USER_NAME"]; [UsergetAccount:^(NSString*username,NSString*password,NSString*token) { NSLog(@"username:%@,password:%@,token:%@",username,password,token); NSString* jsStr = [NSStringstringWithFormat:@"getUserName('%@,%@')",userName,password]; [self.webViewevaluateJavaScript:jsStrcompletionHandler:^(id_Nullableresult,NSError*_Nullableerror) { NSLog(@"result=%@ error=%@",result, error); }]; }]; }