Objective-c与js相互调用

原文地址：http://blog.csdn.net/ikmb/article/details/6716831

一 objective-c调用js

1. NSString *currentURL = [webView stringByEvaluatingJavaScriptFromString:@"document.location.href"];
2. //注: webView是UIWebView实例

二 js调用objective-c

1.obj-c部分

1. - (void)viewDidLoad {
2. [super viewDidLoad];
3. self.myWebView.delegate=self;
4. }
5. //-------------------------------------------------
6. - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
7. {
8. //此url解析规则自己定义
9. NSString* rurl=[[request URL] absoluteString];
10. if ([rurl hasPrefix:@"protocol://"]) {
11. UIAlertView* alert=[[UIAlertView alloc]initWithTitle:@"Called by JavaScript"
12. message:@"You've called iPhone provided control from javascript!!" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
13. [alert show];
14. [alert release];
15. return false;
16. }
17. return true;
18. }

2. js部分

1. function sendCommand(cmd,param){
2. var url="protocol://"+cmd+":"+param;
3. document.location = url;
4. }

3.html部分

1. <input type="button" value="call obj-c" onClick="sendCommand('act','param');" />

原文地址：http://blog.csdn.net/ikmb/article/details/6716831

一 objective-c调用js

1. NSString *currentURL = [webView stringByEvaluatingJavaScriptFromString:@"document.location.href"];
2. //注: webView是UIWebView实例

二 js调用objective-c

1.obj-c部分

1. - (void)viewDidLoad {
2. [super viewDidLoad];
3. self.myWebView.delegate=self;
4. }
5. //-------------------------------------------------
6. - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
7. {
8. //此url解析规则自己定义
9. NSString* rurl=[[request URL] absoluteString];
10. if ([rurl hasPrefix:@"protocol://"]) {
11. UIAlertView* alert=[[UIAlertView alloc]initWithTitle:@"Called by JavaScript"
12. message:@"You've called iPhone provided control from javascript!!" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
13. [alert show];
14. [alert release];
15. return false;
16. }
17. return true;
18. }

2. js部分

1. function sendCommand(cmd,param){
2. var url="protocol://"+cmd+":"+param;
3. document.location = url;
4. }

3.html部分

1. <input type="button" value="call obj-c" onClick="sendCommand('act','param');" />