Hi in my app I load a NSString from Internet using NSURL, and then a label shows the text. If i press the button to load the String, it becomes highlighted and stays highlighted for a couple of seconds. During that time i want a UIActivityIndicatorView to show up, to inform the user that the app is actually doing something. Ive tried just adding [activity startAnimating]; to the IBAction but it only starts animating when the button is back to the default state, not when its highlighted. ive also tried
if ([button state] == UIControlStateHighlited) {
[activity startAnimating];
}
but it doesn’t work.
awesome, now it works! Thanks a lot! You forgot to put [spinner start animating] into the code :D. There was a bug that if you pressed the button many times in a row the app would crash, so it got rid of it:
- (IBAction)load:(id)sender {
if ([act isAnimating]) {
}
else {
ASINetworkQueue *queue = [ASINetworkQueue queue];
ASIHTTPRequest *usdRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADUSD=X&f=l1"]];
ASIHTTPRequest *eurRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADEUR=X&f=l1"]];
ASIHTTPRequest *dateRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADEUR=X&f=d1"]];
ASIHTTPRequest *timeRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADEUR=X&f=t1"]];
[queue addOperation:usdRequest];
[queue addOperation:eurRequest];
[queue addOperation:dateRequest];
[queue addOperation:timeRequest];
[queue setQueueDidFinishSelector:@selector(parseLoadedData:)];
[queue setRequestDidFinishSelector:@selector(requestLoaded:)];
[queue setDelegate:self];
[queue go];
[act startAnimating];
}
}
- (void)requestLoaded:(ASIHTTPRequest *)request {
if([[request url] isEqual:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADUSD=X&f=l1"]]) {
usdString = [[request responseString] retain];
} else if([[request url] isEqual:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADEUR=X&f=l1"]]) {
eurString = [[request responseString] retain];
} else if([[request url] isEqual:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADEUR=X&f=d1"]]) {
dateString = [[request responseString] retain];
} else if([[request url] isEqual:[NSURL URLWithString:@"http://download.finance.yahoo.com/d/quotes.csv?s=CADEUR=X&f=t1"]]) {
timeString = [[request responseString] retain];
}
}
- (void)parseLoadedData:(ASIHTTPRequest *)request {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSString *Date = [dateString stringByReplacingOccurrencesOfString:@"\"" withString:@""];
NSString *Time = [timeString stringByReplacingOccurrencesOfString:@"\"" withString:@""];
NSString *total = [NSString stringWithFormat:@"%@ %@",Date,Time];
if ([eurString length] == 0) {
test.text = [defaults objectForKey:@"date"];
eur.text = [defaults objectForKey:@"eur"];
usd.text = [defaults objectForKey:@"usd"];
} else {
test.text = total;
eur.text = eurString;
usd.text = usdString;
[defaults setObject:test.text forKey:@"date"];
[defaults setObject:usd.text forKey:@"usd"];
[defaults setObject:eur.text forKey:@"eur"];
}
[defaults synchronize];
[eurString release];
[usdString release];
[dateString release];
[timeString release];
[act stopAnimating];
}
I think that you should rewrite your code. Maybe I’ll do it for you. 🙂
First of all, download [ASIHTTPRequest library][1]. It’s great library for working with network files. I think that you should use queue for this.
Then put this code in your view controller:
In your header file declare theese objects:
I think that it will work. 😉
EDIT: I updated the code so that is must work. I checked it myself. My method of loading your data is faster, safer and more efficient.