Question

-(IBAction)actionPrevious:(id)sender{

    [self startact];
    pageNumber = pageNumber - 1;

    if (pageNumber>0) { 
        NSString *str_Img =[array_Image objectAtIndex:pageNumber];  
        NSData *mydata = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:str_Img]];
        UIImage *myimage = [[UIImage alloc] initWithData:mydata];
        [imageView1 setImage:myimage];
        [self.view addSubview:imageView1];
        lbl_PhotoName.text = [array_Name objectAtIndex:pageNumber];
        lbl_PhotoDate.text = [array_Date objectAtIndex:pageNumber];
        lbl_PhotoDesc.text = [array_Desc objectAtIndex:pageNumber];
        [mydata release];
        [myimage release];
    }
    [self endact];

}

-(void)startact{
        [act setHidden:NO];
        [act startAnimating];

}

-(void)endact{
    [act stopAnimating];
    [act setHidden:YES];
}

In above code activity activity indicator is not display. Photo are display using the web service. please Help!
Thank You

Answer 1

You need to work on the same thread and need to call by this way

[self performSelector:@selector(startact) withObject:nil afterDelay:1];