IOS中UIWebView、WKWebView之JS交互

时间:2021-05-02

做客户端开发,肯定避免不了JS交互,于是自己对苹果接口做了个简易封装:

JSExport-->UIWebView+Interaction、WKScriptMessageHandler -->WKWebView+Interaction以备以后使用。

代码非常简洁,见这里:https://github.com/V5zhou/JSInteraction.git

旧方式

旧的交互方式有通过UIWebViewDelegate实现的:JS与客户端定义好跳转页面参数,在将要跳转时捕获关键字,然后处理业务。

iOS端:

? 1 2 3 4 5 6 7 8 9 - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { NSString *urlString = [[request URL] absoluteString]; if ([urlString isEqualToString:@"objc://loading"]) { if (_gotoRootViewController) { _gotoRootViewController(); } } return YES; }

JS端:

? 1 2 3 4 5 6 7 8 <!DOCTYPE html> <html> <title>test</title> <meta charset="utf-8"> <body> <a href="javascript:document.location = 'objc://loading'" rel="external nofollow" class="btn">这是交互按钮</a> </body> </html>

UIWebView+JSExport方式

导入JavaScriptCore.framework,并导入我的扩展类#import "UIWebView+Interaction.h"。

使用方式

OC调JS:

? 1 [_webView InterActionToJs:@"alertMobile('15625298071')"];

JS调OC:

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 - (void)webViewDidFinishLoad:(UIWebView *)webView { [self.webView InterActionToOc:^(InterActionOcType functionType, NSDictionary *param) { switch (functionType) { case InterActionOcType_alert: { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:param[@"title"] message:param[@"content"] delegate:nil cancelButtonTitle:nil otherButtonTitles:@"确定", nil]; [alert show]; } break; case InterActionOcType_present: { self.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; Class Cls = NSClassFromString(param[@"toController"]); BOOL isAnimate = [param[@"animate"] boolValue]; UIViewController *ctl = [[Cls alloc] init]; [self presentViewController:ctl animated:isAnimate completion:nil]; } break; default: break; } }]; }

添加动作

? 1 2 3 4 5 6 //自定义添加功能类型 typedef NS_ENUM(NSUInteger, InterActionOcType) { InterActionOcType_alert = 0, InterActionOcType_present, InterActionOcType_xxxxxxx, //有啥需求就和这里添加 };

并且对应的html中添加JS,参数封装为字典形式。例:

? 1 2 3 4 5 6 function myPresent(ctl) { var param = new Array(); param["animate"] = 1; param["toController"] = "SecondViewController"; WebViewInteraction.callBack(1, param); }

其中callBack是通过这个JSExport实现的

? 1 2 3 4 5 6 @protocol WebViewJSExport <JSExport> JSExportAs (callBack /** callBack 作为js方法的别名 */, - (void)awakeOC:(InterActionOcType)type param:(NSDictionary *)param ); @end

WKWebView+WKScriptMessageHandler方式

导入WebKit.framework,并导入我的扩展类#import "WKWebView+Interaction.h"。

使用方式

OC调JS:

? 1 [self.wkWebView InterActionToJs:@"JSReloadTitle('你点了刷新JS按钮,我没猜错!')"];

JS调OC:

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 //注册交互类型 [self.wkWebView registerScriptTypes:@{@"OCDismiss" : @(WKInterActionOcType_dismiss), @"OCShowAlert" : @(WKInterActionOcType_alert)}]; [self.wkWebView InterActionToOc:^(WKInterActionOcType functionType, NSDictionary *param) { switch (functionType) { case WKInterActionOcType_dismiss: { BOOL isAnimate = [param[@"animate"] boolValue]; [self dismissViewControllerAnimated:isAnimate completion:nil]; } break; case WKInterActionOcType_alert: { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"JS去做平方" message:nil delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil]; alert.alertViewStyle = UIAlertViewStylePlainTextInput; [alert show]; } break; default: break; } }];

添加动作

? 1 2 3 4 5 6 //自定义添加功能类型 typedef NS_ENUM(NSUInteger, WKInterActionOcType) { WKInterActionOcType_alert = 0, WKInterActionOcType_dismiss, WKInterActionOcType_xxxxxxx, //有啥需求就和这里添加 };

并且对应的html中添加JS,参数封装为字典形式。例:

? 1 2 3 4 //js调oc function myDismiss() { window.webkit.messageHandlers.OCDismiss.postMessage({"animate" : 1}); //这里的OCDismiss对应注册类型 }

其中callBack是通过WKScriptMessageHandler实现的

? 1 2 3 4 5 6 7 8 9 10 - (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message { dispatch_async(dispatch_get_main_queue(), ^{ NSString *name = message.name; NSDictionary *value = message.body; WKInterActionOcType type = [self.typeDict[name] integerValue]; if (self.block) { self.block(type, value); } }); }

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。

原文链接:http://www.jianshu.com/p/5b2bbd283e2f?utm_source=tuicool&utm_medium=referral

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