iPhone控制項之UIWebView

 1 #import <UIKit/UIKit.h>
 2 
 3 @interface UITestViewController : UIViewController <UIWebViewDelegate>
 4 {
 5 
 6 }
 7 
 8 @end
 9 
10 
11 
12 
13 //
14 //  UITestViewController.m
15 //  UITest
16 //
17 
18 #import "UITestViewController.h"
19 
20 UIActivityIndicatorView *activity;
21 
22 @implementation UITestViewController
23 
24 - (void)viewDidLoad {
25     
26     [super viewDidLoad];
27     
28     [self.view setBackgroundColor:[UIColor blackColor]];
29     
30     CGRect webRect = CGRectMake(10,10,300,380);
31     UIWebView *myWebView = [[UIWebView alloc] initWithFrame:webRect];
32     myWebView.scalesPageToFit = YES;
33     
34     myWebView.delegate = self;
35     
36     NSURL *url = [NSURL URLWithString:@"http://www.google.com"];
37     NSURLRequest *request = [NSURLRequest requestWithURL:url];
38     [myWebView loadRequest:request];
39     
40     [self.view addSubview:myWebView];
41     
42     activity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
43     [activity setCenter:CGPointMake(160,420)];
44     [self.view addSubview:activity];    
45     
46     [myWebView release];
47 }
48 
49 - (void)webViewDidStartLoad:(UIWebView *)webView
50 {
51     [activity startAnimating];
52 }
53 
54 - (void)webViewDidFinishLoad:(UIWebView *)webView
55 {
56     [activity stopAnimating];
57     [webView stringByEvaluatingJavaScriptFromString:@"alert('Finished Loading!');"];
58 }
59 
60 - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
61 {
62     [activity stopAnimating];
63     NSLog(@"Error: %@",error);
64 }
65 
66 - (void)didReceiveMemoryWarning {
67     // Releases the view if it doesn't have a superview.
68     [super didReceiveMemoryWarning];
69     
70     // Release any cached data, images, etc that aren't in use.
71 }
72 
73 - (void)viewDidUnload {
74     // Release any retained subviews of the main view.
75 // e.g. self.myOutlet = nil;
76 }
77 
78 
79 - (void)dealloc {
80     
81     [activity release];
82     [super dealloc];
83 }
84 
85 @end