iOS webview 和 js 交互

来源：互联网发布：布比网络编辑：程序博客网时间：2024/06/05 16:30

1.先上一段 html 代码

<html>

<head>

</head>

<body>

<h1>这是一段内容</h1>

</body>

</html>

2. js 代码

function loadURL(url) {

var iFrame;

iFrame = document.createElement("iframe");

iFrame.setAttribute("src", url);

iFrame.setAttribute("style","display:none;");

iFrame.setAttribute("height","0px");

iFrame.setAttribute("width","0px");

iFrame.setAttribute("frameborder","0");

document.body.appendChild(iFrame);

//发起请求后这个iFrame就没用了，所以把它从dom上移除掉

iFrame.parentNode.removeChild(iFrame);

iFrame =null;

}

function check() {

loadURL("lichongyang:abc");

}

function check2() {

loadURL("lichongyang2:abc");

}

3.当js 调用 iOS 的时候通过上面的js 代码会重定向一个请求的url 在

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

NSURL * url = [request URL];

if ([[urlabsoluteString] rangeOfString:@"abc"].location!=NSNotFound) {

UIAlertView * alertView = [[[UIAlertViewalloc] initWithTitle:@"test"message:[url absoluteString]delegate:nilcancelButtonTitle:@"OK"otherButtonTitles:nil]autorelease];

[alertViewshow];

return NO;

}

//获取当前页面的title

//self.title ＝ [webView stringByEvaluatingJavaScriptFromString:@"document.title"];

return YES;

}

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