;(function() {
if (window.WebViewJavascriptBridge) { return }
var messagingIframe
var sendMessageQueue = []
var receiveMessageQueue = []
var messageHandlers = {}
var CUSTOM_PROTOCOL_SCHEME = 'wvjbscheme'
var QUEUE_HAS_MESSAGE = '__WVJB_QUEUE_MESSAGE__'
var responseCallbacks = {}
var uniqueId = 1
function _createQueueReadyIframe(doc) {
messagingIframe = doc.createElement('iframe')
messagingIframe.style.display = 'none'
messagingIframe.src = CUSTOM_PROTOCOL_SCHEME + '://' + QUEUE_HAS_MESSAGE
doc.documentElement.appendChild(messagingIframe)
}
function init(messageHandler) {
if (WebViewJavascriptBridge._messageHandler) { throw new Error('WebViewJavascriptBridge.init called twice') }
WebViewJavascriptBridge._messageHandler = messageHandler
var receivedMessages = receiveMessageQueue
receiveMessageQueue = null
for (var i=0; i<receivedMessages.length; i++) {
_dispatchMessageFromObjC(receivedMessages[i])
}
}
function send(data, responseCallback) {
_doSend({ data:data }, responseCallback)
}
function registerHandler(handlerName, handler) {
messageHandlers[handlerName] = handler
}
function callHandler(handlerName, data, responseCallback) {
_doSend({ handlerName:handlerName, data:data }, responseCallback)
}
function _doSend(message, responseCallback) {
if (responseCallback) {
var callbackId = 'cb_'+(uniqueId++)+'_'+new Date().getTime()
responseCallbacks[callbackId] = responseCallback
message['callbackId'] = callbackId
}
sendMessageQueue.push(message)
messagingIframe.src = CUSTOM_PROTOCOL_SCHEME + '://' + QUEUE_HAS_MESSAGE
}
function _fetchQueue() {
var messageQueueString = JSON.stringify(sendMessageQueue)
sendMessageQueue = []
return messageQueueString
}
function _dispatchMessageFromObjC(messageJSON) {
setTimeout(function _timeoutDispatchMessageFromObjC() {
var message = JSON.parse(messageJSON)
var messageHandler
var responseCallback
if (message.responseId) {
responseCallback = responseCallbacks[message.responseId]
if (!responseCallback) { return; }
responseCallback(message.responseData)
delete responseCallbacks[message.responseId]
} else {
if (message.callbackId) {
var callbackResponseId = message.callbackId
responseCallback = function(responseData) {
_doSend({ responseId:callbackResponseId, responseData:responseData })
}
}
var handler = WebViewJavascriptBridge._messageHandler
if (message.handlerName) {
handler = messageHandlers[message.handlerName]
}
try {
handler(message.data, responseCallback)
} catch(exception) {
if (typeof console != 'undefined') {
console.log("WebViewJavascriptBridge: WARNING: javascript handler threw.", message, exception)
}
}
}
})
}
function _handleMessageFromObjC(messageJSON) {
if (receiveMessageQueue) {
receiveMessageQueue.push(messageJSON)
} else {
_dispatchMessageFromObjC(messageJSON)
}
}
window.WebViewJavascriptBridge = {
init: init,
send: send,
registerHandler: registerHandler,
callHandler: callHandler,
_fetchQueue: _fetchQueue,
_handleMessageFromObjC: _handleMessageFromObjC
}
var doc = document
_createQueueReadyIframe(doc)
var readyEvent = doc.createEvent('Events')
readyEvent.initEvent('WebViewJavascriptBridgeReady')
readyEvent.bridge = WebViewJavascriptBridge
doc.dispatchEvent(readyEvent)
})();
UIWebView与 javascript的交互
需积分: 14 63 浏览量
2015-04-21
17:12:05
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HTML5Demo.zip （24个子文件） 
HTML5Demo 
.DS_Store 6KB HTML5Demo WebViewJavascriptBridge WebViewJavascriptBridge.h 2KB WebViewJavascriptBridge.m 15KB
WebViewJavascriptBridge.js.txt 3KB ViewController.m 2KB Info.plist 1KB main.m 327B test.js 92B Base.lproj Main.storyboard 2KB LaunchScreen.xib 4KB Images.xcassets AppIcon.appiconset Contents.json 585B ViewController.h 278B AppDelegate.h 270B
test.html 726B AppDelegate.m 2KB HTML5Demo.xcodeproj project.xcworkspace xcshareddata HTML5Demo.xccheckout 3KB contents.xcworkspacedata 154B xcuserdata jack.xcuserdatad UserInterfaceState.xcuserstate 18KB xcuserdata jack.xcuserdatad xcdebugger Breakpoints_v2.xcbkptlist 1KB xcschemes HTML5Demo.xcscheme 4KB xcschememanagement.plist 571B project.pbxproj 18KB HTML5DemoTests Info.plist 742B HTML5DemoTests.m 858B资源评论
