WebView myWebView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.addJavascriptInterface(new WebAppInterface(this), "JsAndroid");

function callApp(method) {
        var args = [].slice.call(arguments).splice(1);
        var s = "";
        if (/android/i.test(navigator.userAgent)) {//安卓
            s = window["JsAndroid"][method].apply(window.JsAndroid, args);
        }
        if (/ipad|iphone|mac/i.test(navigator.userAgent)) {//ios
            s = window["JsIOS"][method].apply(this, args);
        }
        return s;
    }

//与IOS交互的方法
window.EasyJS = {
    __callbacks: {},
    
    invokeCallback: function (cbId, removeAfterExecute) {
        var args = Array.prototype.slice.call(arguments).splice(2);

        for (var i = 0, l = args.length; i < l; i++) {
            args[i] = decodeURIComponent(args[i]);
        }

        var cb = EasyJS.__callbacks[cbId];
        if (removeAfterExecute) {
            EasyJS.__callbacks[cbId] = undefined;
        }
        return cb.apply(null, args);
    },

    call: function (obj, functionName, args) {
        var formattedArgs = [];
        for (var i = 0, l = args.length; i < l; i++) {
            if (typeof args[i] == "function") {
                formattedArgs.push("f");
                var cbId = "__cb" + (+new Date);
                EasyJS.__callbacks[cbId] = args[i];
                formattedArgs.push(cbId);
            } else {
                formattedArgs.push("s");
                formattedArgs.push(encodeURIComponent(args[i]));
            }
        }

        var argStr = (formattedArgs.length > 0 ? ":" + encodeURIComponent(formattedArgs.join(":")) : "");

        var iframe = document.createElement("IFRAME");
        iframe.setAttribute("src", "easy-js:" + obj + ":" + encodeURIComponent(functionName) + argStr);
        document.documentElement.appendChild(iframe);
        iframe.parentNode.removeChild(iframe);
        iframe = null;

        var ret = EasyJS.retValue;
        EasyJS.retValue = undefined;

        if (ret) {
            return decodeURIComponent(ret);
        }
    },

    inject: function (obj, methods) {
        alert(obj);
        window[obj] = {};
        var jsObj = window[obj];
        for (var i = 0, l = methods.length; i < l; i++) {
            (function () {
                var method = methods[i];
                var jsMethod = method.replace(new RegExp(":", "g"), "");
                jsObj[jsMethod] = function () {
                    alert("qq");
                    return EasyJS.call(obj, method, Array.prototype.slice.call(arguments));
                };
            })();
        }
    }
};