iOS开发——JS网页交互—

iOS开发——JS网页交互——javaScript

JS中调用OC
 1 #import "ViewController.h"
 2 
 3 @interface ViewController () <UIWebViewDelegate>
 4 @end
 5 
 6 @implementation ViewController
 7 
 8 - (void)viewDidLoad
 9 {
10     [super viewDidLoad];
11     // 1.webView
12     UIWebView *webView = [[UIWebView alloc] init];
13     webView.frame = self.view.bounds;
14     webView.delegate = self;
15     [self.view addSubview:webView];
16     
17     // 2.加载网页
18     NSURL *url = [[NSBundle mainBundle] URLForResource:@"test" withExtension:@"html"];
19     NSURLRequest *request = [NSURLRequest requestWithURL:url];
20     [webView loadRequest:request];
21 }
22 
23 #pragma mark - UIWebViewDelegate
24 - (void)webViewDidFinishLoad:(UIWebView *)webView
25 {
26 
27 }
28 
29 /**
30  *  webView每当发送一个请求之前，都会先调用这个方法（能拦截所有请求）
31  */
32 - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
33 {
34     NSString *url = request.URL.absoluteString;
35     NSRange range = [url rangeOfString:@"hm://"];
36     NSUInteger loc = range.location;
37     if (loc != NSNotFound) { // url的协议头是hm，也可以随便起
38         // 方法名
39         NSString *method = [url substringFromIndex:loc + range.length];
40         
41         // 转成SEL
42 //        SEL sel = NSSelectorFromString(method);
43 //        [self performSelector:sel withObject:nil];
44         [self performSelector:NSSelectorFromString(method) withObject:nil];
45     }
46     return YES;
47 }
48 
49 /**
50  *  打电话
51  */
52 - (void)call
53 {
54     NSLog(@"call----");
55 }
56 
57 /**
58  *  打开照相机
59  */
60 - (void)openCamera
61 {
62     NSLog(@"openCamera----");
63 }
64 
65 @end
HTML网页代码图