/这段代码是固定的，必须要放到js中/
function setupWebViewJavascriptBridge(callback) {
if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
window.WVJBCallbacks = [callback];
var WVJBIframe = document.createElement('iframe');
WVJBIframe.style.display = 'none';
WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
document.documentElement.appendChild(WVJBIframe);
setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
}
<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="content-type">
<title>
js调用java
</title>
</head>
<body>
<p>
<div id="show"></div>
</p>
<p>
<input type="button" id="enter3" value="payInterface" onclick="payInterface();" />
</p>
</body>
<script>
function setupWebViewJavascriptBridge(callback) {
if (window.WebViewJavascriptBridge) {
callback(WebViewJavascriptBridge)
} else {
document.addEventListener(
'WebViewJavascriptBridgeReady'
, function () {
callback(WebViewJavascriptBridge)
},
false
);
}
if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
window.WVJBCallbacks = [callback];
var WVJBIframe = document.createElement('iframe');
WVJBIframe.style.display = 'none';
WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
document.documentElement.appendChild(WVJBIframe);
setTimeout(function () { document.documentElement.removeChild(WVJBIframe) }, 0)
}
//在改function 中添加原生调起js方法
setupWebViewJavascriptBridge(function (bridge) {
//注册原生调起方法
//参数1： buttonjs 注册flag 供原生使用，要和原生统一
//参数2： data 是原生传给js 的数据
//参数3： responseCallback 是js 的回调，可以通过该方法给原生传数据
bridge.registerHandler("gotoGoodsDetailHandler", function (data, responseCallback) {
document.getElementById("show").innerHTML = "buuton js" + data;
responseCallback("button js callback");
});
document.getElementById('enter3').onclick = function (e) {
var data = "hello"
//参数1： pay 注册flag 供原生使用，要和原生统一
//参数2： 是调起原生时向原生传递的参数
//参数3： 原生调用回调返回的数据
bridge.callHandler('getBlogNameFromObjC', data, function (resp) {
document.getElementById("show").innerHTML = "payInterface" + resp;
}
);
}
})
</script>
</html>
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