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使用WebView构建HyBird应用
HyBird是一种本地技术与Web相结合，能过实现跨平台的移动应用开发，最常用的一个框架：PhoneGap
一：首先，写好html代码
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, maximum-scale=1.0, user-scalable=no;" /> 5 <meta http-equiv="Content-type" content="text/html; charset=utf-8"/> 6 <script> 7 //从iOS对象中调用 8 function helloWorld(msg) { 9 document.getElementById(‘message‘).innerHTML = msg; 10 } 11 //调用iOS对象 12 function showAndroidDialog(msg) { 13 var myJSONObject = new Object(); 14 myJSONObject.title = ‘HelloWorld‘; 15 myJSONObject.message = msg; 16 var JSONString = JSON.stringify(myJSONObject); 17 var uri = ‘gap://XXXClass.XXXmethod#‘ + JSONString; 18 window.location = uri; 19 } 20 </script> 21 22 </head> 23 <body> 24 <h2>iOS本地与Web互相调用</h2> 25 <button onclick=‘showAndroidDialog("JS to iOS 对象")‘>调用iOS对象</button> 26 <br><br> 27 <div id=‘message‘></div> 28 </body> 29 </html>
二：在iOS中调用javaScript代码：
1 - (void)viewDidLoad 2 { 3 [super viewDidLoad]; 4 // Do any additional setup after loading the view, typically from a nib. 5 6 self.webView.delegate = self; 7 NSString *path = [[NSBundle mainBundle] pathForResource:@"www/index" ofType:@"html"]; 8 [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath: path]]]; 9 } 10 11 - (void)didReceiveMemoryWarning 12 { 13 [super didReceiveMemoryWarning]; 14 // Dispose of any resources that can be recreated. 15 } 16 17 #pragma mark UIWebViewDelegate 18 19 - (void)webViewDidFinishLoad:(UIWebView *)webView 20 { 21 [self.webView stringByEvaluatingJavaScriptFromString:@"helloWorld(‘从iOS对象中调用JS Ok.‘)"]; 22 } 23 24 25 - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType 26 { 27 NSString *actionType = request.URL.host; 28 NSString *scheme = request.URL.scheme; 29 NSString *fragment = [request.URL.fragment URLDecodedString]; 30 NSData *responseData = [fragment dataUsingEncoding:NSUTF8StringEncoding]; 31 32 if ( [scheme isEqualToString:@"gap"] ) { 33 if ([actionType isEqualToString:@"XXXClass.XXXmethod"]) { 34 35 NSError* error; 36 NSDictionary* json = [NSJSONSerialization 37 JSONObjectWithData:responseData 38 options:NSJSONReadingAllowFragments 39 error:&error]; 40 41 NSLog(@"title: %@ , message: %@",[json objectForKey:@"title"], [json objectForKey:@"message"] ); 42 43 } 44 } 45 return true; 46 }
注：这里用到了一个NSString的分类用于字符串雨URL的编码与解码
1 - (NSString *)URLEncodedString 2 { 3 NSString *result = (NSString *) 4 CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, 5 (CFStringRef)self, 6 NULL, 7 CFSTR("!*‘();:@&=+$,/?%#[] "), 8 kCFStringEncodingUTF8)); 9 return result; 10 } 11 12 - (NSString*)URLDecodedString 13 { 14 NSString *result = (NSString *) 15 CFBridgingRelease(CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, 16 (CFStringRef)self, 17 CFSTR(""), 18 kCFStringEncodingUTF8)); 19 return result; 20 }
iOS开发——网络编程OC篇&使用WebView构建HyBird应用
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原文地址：http://www.cnblogs.com/iCocos/p/4555756.html
