javascript如何調用objective-c的方法

如題~想要實現
javascript與objc的互動

如何?javascript調用objc內部的某一個介面呢?

我是這樣實現的

例如某一入口
<input type="button" id="enter" value="enter" onclick="testClick('printLog1:Log2:','ddddd','aaaaa');"/>

js裡面
function testClick(cmd,parameter1,parameter2)
{
    alert(1);
    document.write(Date());
    window.location.href="objc://"+cmd+":/"+parameter1+":/"+parameter2;
}

注意,window.location.href="objc://"+cmd+":/"+parameter1+":/"+parameter2;   // cmd是方法名稱不要有空格,後者是附帶的參數
其中參數的格式按照自己的需要來定


- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType 
{ 
    NSString *urlString = [[request URL] absoluteString];
    
    NSArray *urlComps = [urlString componentsSeparatedByString:@"://"];
    
    if([urlComps count] && [[urlComps objectAtIndex:0] isEqualToString:@"objc"])
    {
        
        NSArray *arrFucnameAndParameter = [(NSString*)[urlComps objectAtIndex:1] componentsSeparatedByString:@":/"];
        NSString *funcStr = [arrFucnameAndParameter objectAtIndex:0];
        
        if (1 == [arrFucnameAndParameter count])
        {
            // 沒有參數
            if([funcStr isEqualToString:@"doFunc1"])  
            {
                
                /*調用本地函數1*/
                NSLog(@"doFunc1");
                
            }
        }
        else 
        {
            //有參數的
            if([funcStr isEqualToString:@"printLog1:Log2:"]) 
            {
                [self printLog1:[arrFucnameAndParameter objectAtIndex:1] Log2:[arrFucnameAndParameter objectAtIndex:2]];
            }
        }
        return NO;
}