В настоящее время я разрабатываю пример, в котором я показываю 4 веб-просмотра на экране ipad и пытаюсь показать 4 различных URL-адреса в них.
Все веб-страницы отлично отображаются в веб-просмотре.
Также я показываю 4 индикатора активности, как только веб-страница начинает загружаться.
Но я не могу понять, как остановить индикатор активности на всех соответствующих веб-страницах один за другим, как только они загружены на экран.
-(void)createWebView
{
//******************** First *********
firstWebView=[[UIWebView alloc]init];
firstWebView.frame=CGRectMake(10, 50, 350, 470);
firstWebView.delegate=self;
firstIndicator = [[UIActivityIndicatorView alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
firstIndicator.center = CGPointMake(160, 240);
firstIndicator.hidesWhenStopped = YES;
[self.firstWebView addSubview:firstIndicator];
[firstIndicator startAnimating];
firstWebView.backgroundColor=[UIColor grayColor];
NSURL *firstUrl = [NSURL URLWithString:@"http://www.techtree.com"];
NSURLRequest *firstRequestObj = [NSURLRequest requestWithURL:firstUrl];
[firstWebView loadRequest:firstRequestObj];
[self.view addSubview:firstWebView];
//******************* Second *********
secondWebView=[[UIWebView alloc]init];
secondWebView.frame=CGRectMake(405, 50, 350, 470);
secondWebView.delegate=self;
secondIndicator = [[UIActivityIndicatorView alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
secondIndicator.center = CGPointMake(160, 240);
secondIndicator.hidesWhenStopped = YES;
[self.secondWebView addSubview:secondIndicator];
[secondIndicator startAnimating];
secondWebView.backgroundColor=[UIColor grayColor];
NSURL *secondUrl = [NSURL URLWithString:@"http://www.facebook.com"];
NSURLRequest *secondRequestObj = [NSURLRequest requestWithURL:secondUrl];
[secondWebView loadRequest:secondRequestObj];
[self.view addSubview:secondWebView];
//****************** Third ************
thirdWebView=[[UIWebView alloc] init];
thirdWebView.frame=CGRectMake(10, 528, 350, 470);
thirdWebView.delegate=self;
thirdIndicator = [[UIActivityIndicatorView alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
thirdIndicator.center = CGPointMake(160, 240);
thirdIndicator.hidesWhenStopped = YES;
[self.thirdWebView addSubview:thirdIndicator];
[thirdIndicator startAnimating];
thirdWebView.backgroundColor=[UIColor grayColor];
NSURL *thirdUrl = [NSURL URLWithString:@"http://www.yahoo.com"];
NSURLRequest *thirdRequestObj = [NSURLRequest requestWithURL:thirdUrl];
[thirdWebView loadRequest:thirdRequestObj];
[self.view addSubview:thirdWebView];
//***************** Fourth ************
fourthWebView=[[UIWebView alloc] init];
fourthWebView.frame=CGRectMake(405,528, 350, 470);
fourthWebView.delegate=self;
fourthIndicator = [[UIActivityIndicatorView alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
fourthIndicator.center = CGPointMake(160, 240);
fourthIndicator.hidesWhenStopped = YES;
[self.fourthWebView addSubview:fourthIndicator];
[fourthIndicator startAnimating];
fourthWebView.backgroundColor=[UIColor grayColor];
NSURL *fourthUrl = [NSURL URLWithString:@"http://stackoverflow.com"];
NSURLRequest *fourthRequestObj = [NSURLRequest requestWithURL:fourthUrl];
[fourthWebView loadRequest:fourthRequestObj];
[self.view addSubview:fourthWebView];
//******************** Memory Managemt **********
[firstWebView release];
[secondWebView release];
[thirdWebView release];
[fourthWebView release];
[firstIndicator release];
[secondIndicator release];
[thirdIndicator release];
[fourthIndicator release];
}