做客戶端開發，肯定避免不了JS交互，于是自己對蘋果接口做了個簡易封裝：
JSExport-->UIWebView+Interaction、WKScriptMessageHandler -->WKWebView+Interaction以備以后使用。
代碼非常簡潔，見這里：https://github.com/V5zhou/JSInteraction.git
舊方式
舊的交互方式有通過UIWebViewDelegate實現的：JS與客戶端定義好跳轉頁面參數，在將要跳轉時捕獲關鍵字，然后處理業務。
iOS端：
- (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：
<!DOCTYPE html><html> <title>test</title> <meta charset="utf-8"> <body> <a href="javascript:document.location = 'objc://loading'" rel="external nofollow" class="btn">這是交互按鈕</a> </body></html>
UIWebView+JSExport方式
導入JavaScriptCore.framework，并導入我的擴展類#import "UIWebView+Interaction.h"。
使用方式
OC調JS：
[_webView InterActionToJs:@"alertMobile('15625298071')"];JS調OC:
- (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:@"確定", 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; } }];}添加動作
//自定義添加功能類型typedef NS_ENUM(NSUInteger, InterActionOcType) { InterActionOcType_alert = 0, InterActionOcType_present, InterActionOcType_xxxxxxx, //有啥需求就和這里添加};并且對應的html中添加JS,參數封裝為字典形式。例：
function myPresent(ctl) { var param = new Array(); param["animate"] = 1; param["toController"] = "SecondViewController"; WebViewInteraction.callBack(1, param); }其中callBack是通過這個JSExport實現的
@protocol WebViewJSExport <JSExport>JSExportAs(callBack /** callBack 作為js方法的別名 */, - (void)awakeOC:(InterActionOcType)type param:(NSDictionary *)param );@end
WKWebView+WKScriptMessageHandler方式
導入WebKit.framework，并導入我的擴展類#import "WKWebView+Interaction.h"。
使用方式
OC調JS：
[self.wkWebView InterActionToJs:@"JSReloadTitle('你點了刷新JS按鈕，我沒猜錯！')"];JS調OC:
//注冊交互類型 [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:@"確定", nil]; alert.alertViewStyle = UIAlertViewStylePlainTextInput; [alert show]; } break; default: break; } }];添加動作
//自定義添加功能類型typedef NS_ENUM(NSUInteger, WKInterActionOcType) { WKInterActionOcType_alert = 0, WKInterActionOcType_dismiss, WKInterActionOcType_xxxxxxx, //有啥需求就和這里添加};并且對應的html中添加JS,參數封裝為字典形式。例：
//js調ocfunction myDismiss() { window.webkit.messageHandlers.OCDismiss.postMessage({"animate" : 1}); //這里的OCDismiss對應注冊類型}其中callBack是通過WKScriptMessageHandler實現的
- (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內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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