iOS 在UIWebView中JavaScriptCore实现OC与JS的交互

在webView中实现oc与js的交互一般有两种方式：

1、拦截点击事件的URL进行交互

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{

NSString *path=[[request URL] absoluteString];

if ([path isEqualToString:[NSString stringWithFormat:@"%@/ddhong/user/bindMadaiAccountSuc.jsp",kBaseUrl]]) {

....进行事件处理.......

}

if (navigationType == UIWebViewNavigationTypeLinkClicked)

{

NSString *path=[[request URL] absoluteString];

if ([path isEqualToString:[NSString stringWithFormat:@"%@/application/skiptoalllistcreditloan",kBaseUrl]]) {

.....进行事件处理......

}

}

return YES;

}

2、用JavaScriptCore实现交互
导入头文件：

#import

@protocol JSObjcDelegate

//这两个方法的名字必须与js页面里面调用的方法名字一致

- (void)jumpPublishDynamic;

- (void)jumpLogin;

@end

@interfaceViewController()

@property(nonatomic,strong)UIWebView*webView;

@property(nonatomic,strong)JSContext *jsContext;

@end

@implementation ViewController

- (void)viewDidLoad {  

     [superviewDidLoad];   

     [selfCustomUI];

}

- (void)CustomUI{

   self.webView = [[UIWebViewalloc]initWithFrame:self.view.bounds];

self.webView.delegate =self; 

  [self.view addSubview:_webView];

NSURL*url = [[NSBundlemainBundle] URLForResource:@"untitled3"withExtension:@"html"];

  [self.webView loadRequest:[NSURLRequestrequestWithURL:url]];

}

- (void)webViewDidFinishLoad:(UIWebView*)webView{

self.jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

//此处的JSInterface必须与js页面调用方面的类名名字一致

self.jsContext[@"JSInterface"] = self;

self.jsContext.exceptionHandler = ^(JSContext *context, JSValue *exceptionValue) {

context.exception = exceptionValue;

NSLog(@"异常信息：%@", exceptionValue);

};

}

//js调用oc方法的实现

#pragma mark - JSObjcDelegate

- (void)jumpPublishDynamic {

[self pushController:[PublishViewController class] withTitle:@""];

}

- (void)jumpLogin {

[self pushController:[LoginViewController class] withInfo:nil];

}