github Object-C javascript 消息互通 WebViewJavascriptBridge

WebViewJavascriptBridge：github地址

如何使用：

1) 把WebViewJavascriptBridge文件夹添加到工程中

2) 导入文件，并添加相关属性

#import "WebViewJavascriptBridge.h"

……

@property WebViewJavascriptBridge* bridge;

3) 初始化

self.bridge = [WebViewJavascriptBridge bridgeForWebView:webView handler:^(id data, WVJBResponseCallback responseCallback) {
    NSLog(@"Received message from javascript: %@", data);
    responseCallback(@"Right back atcha");
}];

4) ObjC 向 javascript发送消息

[self.bridge send:@"Well hello there"];
[self.bridge send:[NSDictionary dictionaryWithObject:@"Foo" forKey:@"Bar"]];
[self.bridge send:@"Give me a response, will you?" responseCallback:^(id responseData) {
    NSLog(@"ObjC got its response! %@", responseData);
}];

5) 设置javascript消息处理

function connectWebViewJavascriptBridge(callback) {
    if (window.WebViewJavascriptBridge) {
        callback(WebViewJavascriptBridge)
    } else {
        document.addEventListener('WebViewJavascriptBridgeReady', function() {
            callback(WebViewJavascriptBridge)
        }, false)
    }
}

connectWebViewJavascriptBridge(function(bridge) {

    /* Init your app here */

    bridge.init(function(message, responseCallback) {
        alert('Received message: ' + message)   
        if (responseCallback) {
            responseCallback("Right back atcha")
        }
    })
    bridge.send('Hello from the javascript')
    bridge.send('Please respond to this', function responseCallback(responseData) {
        console.log("Javascript got its response", responseData)
    })
})