抱歉,如果这很简单。基本上,这是我的代码:
MainViewController.h:
#import "FlipsideViewController.h"
@interface MainViewController : UIViewController <UIWebViewDelegate, FlipsideViewControllerDelegate> {
IBOutlet UIWebView *webView;
IBOutlet UIActivityIndicatorView *spinner;
}
- (IBAction)showInfo;
@property(nonatomic,retain) UIWebView *webView;
@property(nonatomic,retain) UIActivityIndicatorView *spinner;
@end
MainViewController.m:
#import "MainViewController.h"
#import "MainView.h"
@implementation MainViewController
@synthesize webView;
@synthesize spinner;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad {
NSURL *siteURL;
NSString *siteURLString;
siteURLString=[[NSString alloc] initWithString:@"http://www.site.com"];
siteURL=[[NSURL alloc] initWithString:siteURLString];
[webView loadRequest:[NSURLRequest requestWithURL:siteURL]];
[siteURL release];
[siteURLString release];
[super viewDidLoad];
}
- (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller {
[self dismissModalViewControllerAnimated:YES];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[spinner stopAnimating];
spinner.hidden=FALSE;
NSLog(@"viewDidFinishLoad went through nicely");
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
[spinner startAnimating];
spinner.hidden=FALSE;
NSLog(@"viewDidStartLoad seems to be working");
}
- (IBAction)showInfo {
FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideView" bundle:nil];
controller.delegate = self;
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controller animated:YES];
[controller release];
}
- (void)dealloc {
[spinner release];
[webView release];
[super dealloc];
}
@end
不幸的是,我的日志中没有任何内容,而且由于某种原因,UIActivityIndicator
似乎从未出现过。这里出了什么问题?
谢谢大家
jack
最佳答案
您需要设置 UIWebView 委托(delegate)。您实现了该协议(protocol),但您从不告诉 UIWebView 这个类是委托(delegate),因此永远不会调用这些方法。
webView.delegate = self;
另外,您可能想看看这个 question/answer关于如何实现 UIWebViewDelegate 方法。
关于iphone - 根据 UIWebView 是否正在加载,事件指示器不显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2480550/