viewdidLoad/ viewDidAppear issue - iphone

Question

I m loading a view which gets data from webservices. So depending upon the response code from server I show the current view or redirect to another view (ErrorView) if responsecode is 400.But I'm not being redirected to ErrorView and find a message in console "Attempt to present <ErrorView: 0xe332f30> on ViewController while a presentation is in progress!"
After googling it out I found to place vieDidLoad code to viewDidAppear
After placing the entire code , it redirects to error view and works correctly.But in ios7 for Status bar issue I used the code
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if(responsecode==200)
{
//load current view
}
else
{
//Load anotherview(ErrorView)
}
float systemVersion=[[[UIDevice currentDevice] systemVersion] floatValue];
if(systemVersion>=7.0f)
{
CGRect tempRect;
for(UIView *sub in [[self view] subviews])
{
tempRect = [sub frame];
tempRect.origin.y += 20.0f;
[sub setFrame:tempRect];
}
}
}
First the statusbar appear on the top ,then after loading the entire viewdata , view gets adjusted and status bar dropsdown by 20px , which looks odd.Can I get it to be adjusted automatically before the viewloads completely ?
Any ideas/suggestions would be appreciable.

Answer 1

I think, you should seperate this code
-(void)viewDidLoad
{
float systemVersion=[[[UIDevice currentDevice] systemVersion] floatValue];
if(systemVersion>=7.0f)
{
CGRect tempRect;
for(UIView *sub in [[self view] subviews])
{
tempRect = [sub frame];
tempRect.origin.y += 20.0f;
[sub setFrame:tempRect];
}
}
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if(responsecode==200)
{
//load current view
}
else
{
//Load anotherview(ErrorView)
}
}