当使用诸如example.com/test之类的weblink加载webview时，JavaScript会正确加载，但是当从资产文件夹的内部html文件加载webview时，JavaScript无法正常工作。
HTML文件代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>payment</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<!-- The Payment Form -->
<form id="iframes" action="" method="GET">
<div class="form-group">
<label for="iframesCardNumber">Card Number:</label>
<div class="iframeholder" id="iframesCardNumber"></div>
</div>
<div class="form-group">
<label for="iframesCardExpiration">Card Expiration:</label>
<div class="iframeholder" id="iframesCardExpiration"></div>
</div>
<div class="form-group">
<label for="iframesCardCvv">Card CVV:</label>
<div class="iframeholder" id="iframesCardCvv"></div>
</div>
<input type="submit" class="btn btn-primary" value="Submit" />
</form>
<!-- The SecureSubmit Javascript Library -->
<script type="text/javascript" src="https://api2.heartlandportico.com/SecureSubmit.v1/token/2.1/securesubmit.js"></script>
<!-- The Integration Code -->
<script type="text/javascript">
(function (document, Heartland) {
// Create a new `HPS` object with the necessary configuration
var hps = new Heartland.HPS({
publicKey: '..............',
type: 'iframe',
// Configure the iframe fields to tell the library where
// the iframe should be inserted into the DOM and some
// basic options
fields: {
cardNumber: {
target: 'iframesCardNumber',
placeholder: '•••• •••• •••• ••••'
},
cardExpiration: {
target: 'iframesCardExpiration',
placeholder: 'MM / YYYY'
},
cardCvv: {
target: 'iframesCardCvv',
placeholder: 'CVV'
}
},
// Collection of CSS to inject into the iframes.
// These properties can match the site's styles
// to create a seamless experience.
style: {
'input[type=text],input[type=tel]': {
'box-sizing':'border-box',
'display': 'block',
'width': '100%',
'height': '34px',
'padding': '6px 12px',
'font-size': '14px',
'line-height': '1.42857143',
'color': '#555',
'background-color': '#fff',
'background-image': 'none',
'border': '1px solid #ccc',
'border-radius': '4px',
'-webkit-box-shadow': 'inset 0 1px 1px rgba(0,0,0,.075)',
'box-shadow': 'inset 0 1px 1px rgba(0,0,0,.075)',
'-webkit-transition': 'border-color ease-in-out .15s,-webkit-box-shadow ease-in-out .15s',
'-o-transition': 'border-color ease-in-out .15s,box-shadow ease-in-out .15s',
'transition': 'border-color ease-in-out .15s,box-shadow ease-in-out .15s'
},
'input[type=text]:focus,input[type=tel]:focus': {
'border-color': '#66afe9',
'outline': '0',
'-webkit-box-shadow': 'inset 0 1px 1px rgba(0,0,0,.075),0 0 8px rgba(102,175,233,.6)',
'box-shadow': 'inset 0 1px 1px rgba(0,0,0,.075),0 0 8px rgba(102,175,233,.6)'
},
'input[type=submit]' : {
'box-sizing':'border-box',
'display': 'inline-block',
'padding': '6px 12px',
'margin-bottom': '0',
'font-size': '14px',
'font-weight': '400',
'line-height': '1.42857143',
'text-align': 'center',
'white-space': 'nowrap',
'vertical-align': 'middle',
'-ms-touch-action': 'manipulation',
'touch-action': 'manipulation',
'cursor': 'pointer',
'-webkit-user-select': 'none',
'-moz-user-select': 'none',
'-ms-user-select': 'none',
'user-select': 'none',
'background-image': 'none',
'border': '1px solid transparent',
'border-radius': '4px',
'color': '#fff',
'background-color': '#337ab7',
'border-color': '#2e6da4'
},
'input[type=submit]:hover':{
'color': '#fff',
'background-color': '#286090',
'border-color': '#204d74'
},
'input[type=submit]:focus, input[type=submit].focus':{
'color': '#fff',
'background-color': '#286090',
'border-color': '#122b40',
'text-decoration': 'none',
'outline': '5px auto -webkit-focus-ring-color',
'outline-offset': '-2px'
}
},
// Callback when a token is received from the service
onTokenSuccess: function (resp) {
alert('Here is a single-use token: ' + resp.token_value);
},
// Callback when an error is received from the service
onTokenError: function (resp) {
alert('There was an error: ' + resp.error.message);
}
});
// Attach a handler to interrupt the form submission
Heartland.Events.addHandler(document.getElementById('iframes'), 'submit', function (e) {
// Prevent the form from continuing to the `action` address
e.preventDefault();
// Tell the iframes to tokenize the data
hps.Messages.post(
{
accumulateData: true,
action: 'tokenize',
message: '........'
},
'cardNumber'
);
});
}(document, Heartland));
</script>
</body>
</html>
我想JavaScript内的CSS代码无法正确加载。但是从示例网站链接（例如example.com/test
）加载后，效果很好相关的Java代码如下：
public static String wikiLink = "file:///android_asset/test.html"
..............
..............
.............
WebSettings settings = webView.getSettings();
//Using JavaScript in WebView, it will enable Javascript support for your website
settings.setJavaScriptEnabled(true);
//Zoom control
settings.setBuiltInZoomControls(true);
settings.setSupportZoom(true);
settings.setDisplayZoomControls(false);
//Handling Page Navigation
webView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
wikiLink = url;
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
webView.setVisibility(View.VISIBLE);
layoutProgress.setVisibility(View.GONE);
progressBar.setIndeterminate(false);
super.onPageFinished(view, url);
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
layoutProgress.setVisibility(View.VISIBLE);
progressBar.setIndeterminate(true);
super.onPageStarted(view, url, favicon);
}
});
//End of Handling Page Navigation
webView.setWebChromeClient(new WebChromeClient(){
public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
Log.d("LogTag", message);
result.confirm();
return true;
}
});
webView.getSettings().setUserAgentString("Test");
webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setAllowUniversalAccessFromFileURLs(true);
if(isOnline()) {
if (webViewBundle == null) {
webView.loadUrl(wikiLink);
} else {
webView.restoreState(webViewBundle);
}
} else {
String summary = "<html><body><font color='red'>No Internet Connection</font></body></html>";
webView.loadData(summary, "text/html", null);
toast("No Internet Connection.");
}
如何解决此问题？
答案 0 :(得分：0)
也许在我已经调用javascript函数时，页面尚未正确加载。
我这样在WebView上添加了一个加载侦听器
mWebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if (url.equals("file:///android_asset/page.html")) {
mWebView.loadUrl("javascript:plot();");
}
}
});
现在，它可以在每次通话时正常工作。
再次感谢您的关注！
答案 1 :(得分：0)
我遇到的问题是，html源中的第一个“＃”之后，webview“ loadData”没有显示内容 在更新Chrome浏览器之前，一切都很好，请进行二次更新-我遇到了问题。
从loadData更改为loadDataWithBaseURL为我解决了该问题
答案 2 :(得分：0)
Heartland JavaScript库需要通过HTTP / HTTPS方案而不是文件进行加载，因为它使用Window.postMessage API在父窗口（您的WebView内容）和子iframe窗口之间进行通信。这是浏览器和Heartland库级别的限制，以帮助实现安全性和跨域资源共享（CORS）。
唯一的解决方法是在Android应用程序中使用本机输入/控件。