insertSubView: is not showing my views - iphone

Question

I am stuck in a tutorial, trying to switch views with a toolbar. My code builds fine and I put some alerts in to check the toolbar was working, and it is. But my subviews I am inserting are just not showing up at all. Can anybody help please?
Here is my main controller code..
MainViewController.h is
#import
#class FlavourPickerView;
#class ShakeView;
#class ResultsView;
#interface MainViewController : UIViewController {
IBOutlet FlavourPickerView *flavourPickerView;
IBOutlet ShakeView *shakeView;
IBOutlet ResultsView *resultsView;
}
#property (retain,nonatomic) FlavourPickerView *flavourPickerView;
#property (retain,nonatomic) ShakeView *shakeView;
#property (retain,nonatomic) ResultsView *resultsView;
-(IBAction)loadFlavourPickerView:(id)sender;
-(IBAction)loadShakeView:(id)sender;
-(IBAction)loadResultsView:(id)sender;
-(void)clearView;
#end
and here is MainViewController.m
#import "MainViewController.h"
#import "FlavourPickerView.h"
#import "ShakeView.h"
#import "ResultsView.h"
#implementation MainViewController
#synthesize flavourPickerView;
#synthesize shakeView;
#synthesize resultsView;
-(IBAction)loadFlavourPickerView:(id)sender{
UIAlertView *alertDialog;
alertDialog = [[UIAlertView alloc]
initWithTitle:#"Flavour selected"
message:#"Seems to work"
delegate:nil
cancelButtonTitle:#"OK!"
otherButtonTitles:nil];
[alertDialog show];
[alertDialog release];
[self clearView];
[self.view insertSubview:flavourPickerView.view atIndex:10];
}
-(IBAction)loadShakeView:(id)sender{
UIAlertView *alertDialog;
alertDialog = [[UIAlertView alloc]
initWithTitle:#"Shaker selected"
message:#"Seems to work"
delegate:nil
cancelButtonTitle:#"OK!"
otherButtonTitles:nil];
[alertDialog show];
[alertDialog release];
[self clearView];
[self.view insertSubview:shakeView.view atIndex:0];
}
-(IBAction)loadResultsView:(id)sender{
UIAlertView *alertDialog;
alertDialog = [[UIAlertView alloc]
initWithTitle:#"Results selected"
message:#"Seems to work"
delegate:nil
cancelButtonTitle:#"OK!"
otherButtonTitles:nil];
[alertDialog show];
[alertDialog release];
[self clearView];
[self.view insertSubview:resultsView.view atIndex:0];
}
-(void)clearView{
if(flavourPickerView.view.superview){
[flavourPickerView.view removeFromSuperview];
}else if(shakeView.view.superview){
[shakeView.view removeFromSuperview];
}else{
[resultsView.view removeFromSuperview];
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[self loadFlavourPickerView:nil];
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[flavourPickerView release];
[shakeView release];
[resultsView release];
[super dealloc];
}
#end
and here is an example of one of the other views, starting with FlavourPickerView.h
#import
#interface FlavourPickerView : UIViewController {
}
#end
and FlavourPickerView.m
#import "FlavourPickerView.h"
#implementation FlavourPickerView
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
#end
There is also a nib for the flavourPickerView and I have added subviews into my mainView, with the Class set to FlavourPickerView and nib name is FlavourPickerView.xib.

Answer 1

Are flavourPickerView, shakeView, and resultsView properly initialized when you add their view to this UIViewController view?
Another thing: avoid to call a UIViewController just 'XXXView', try instead 'XXXViewController'