UIActivityIndicator in xcode? - iphone

Question

I m trying out for the concept of UIActivityIndicator.In the firstView I have a tableView loaded with data and corresponding accessorybutttons.So when a accessorybutton of a tableViewCell is tapped then DetailsView is loaded.Meanwhile Im adding an activityIndicator when accessorybutton is tapped.
- (void) tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
activityIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(143, 220, 37, 37)];
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
activityIndicator.color = [UIColor blackColor];
[self.view addSubview:activityIndicator];
[activityIndicator startAnimating];
activityIndicator.frame=CGRectMake(140, 195, 37, 37);
DetailsView *detailView= [[DetailsView alloc] initWithNibName:#"DetailsView" bundle:nil];
detailView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
UILabel *empid=(UILabel*)[cell viewWithTag:117];
detailView.Id=[empid text];
[self presentModalViewController: detailView animated:NO];
[detailView release];
}
Then in DetailsView based on the empid it received from firstView it loads some data
- (void)viewDidLoad
{
activityIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(143, 220, 37, 37)];
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
activityIndicator.color = [UIColor blackColor];
[self.view addSubview:activityIndicator];
activityIndicator.frame=CGRectMake(140, 195, 37, 37);
////loads data from service url and parsing is done
[activityIndicator stopAnimating];
}
Until here it is working perfectly..I have a back button in DetailsView and whenever it is pressed presentmodalViewController is dismissed.
-(IBAction)btnBack
{
[self dismissModalViewControllerAnimated:NO];
}
But now the problem is I can see the presentmodalViewController getting dismissed but the activityindicator which started animating when accessorybutton is tapped still animating.So how do I stop that animating activityIndicator when presentView is dismissed and display only the data of prevoius view.

Answer 1

in ViewWillAppear method of first view write below code
[activityIndicator hidesWhenStopped];
tell me whether it is working or not!!!
Happy coding!!!!

Answer 2

Use following code
- (void) tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
detailView.Id=[empid text];
[activityIndicator stopAnimating];
[self presentModalViewController: detailView animated:NO];
}
or in your viewWillDisappear of FirstView
{
[activityIndicator stopAnimating];
[activityIndicator removeFromSuperView];
}

Answer 3

in DetailsView class in viewDidLoad method just add activityIndicator as a subview and start animating like bellow..
- (void)viewDidLoad
{
activityIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(143, 220, 37, 37)];
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
activityIndicator.color = [UIColor blackColor];
[self.view addSubview:activityIndicator];
activityIndicator.frame=CGRectMake(140, 195, 37, 37);
[activityIndicator startAnimating];
}
And also stopAnimating when your data download complete or fail and also in bellow method add in btnBack method or viewWillDisappear just add this bellow code
[activityIndicator stopAnimating];
[activityIndicator removeFromSuperview];///Add this line if you want to remove from superview

Answer 4

In the viewWillAppear of first view add [activityIndicator stopAnimating];
-(void)viewWillAppear:(BOOL)animated
{
if (activityIndicator)
{
[activityIndicator stopAnimating];
}
}