function setupWebViewJavascriptBridge(callback) {
//第一次调用这个方法的时候，为false
if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
//第一次调用的时候，为false
if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
//把callback对象赋值给对象
window.WVJBCallbacks = [callback];
//加载WebViewJavascriptBridge_JS中的代码
var WVJBIframe = document.createElement(‘iframe’);
WVJBIframe.style.display = ‘none’;
WVJBIframe.src = ‘https://__bridge_loaded__’;
document.documentElement.appendChild(WVJBIframe);
setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
}
//驱动所有hander的初始化
setupWebViewJavascriptBridge(function(bridge) {
//收到IOS传的方法
bridge.registerHandler(‘testJavascriptHandler’, function(data, responseCallback) {
//OC中传过来的数据
log(‘ObjC called testJavascriptHandler with’, data);
var responseData = { ‘Javascript Says’:’Right back atcha!’ };
responseCallback(responseData);
})
//向OC传方法
bridge.callHandler(‘testObjcHandler’, {‘foo’: ‘bar’}, function(response) {
})
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