Inside “application:didFinishLaunchingWithOptions:” method:

tabBarController = [[UITabBarController alloc] init];
tabBarController.viewControllers = [NSArray arrayWithObjects:navController1, viewController1, viewController2, nil];
[window addSubview:tabBarController.view];
[self makeTabBarHidden:TRUE];

Here is the “makeTabBarHidden” method:

-(void)makeTabBarHidden:(BOOL)hide {
	// Custom code to hide TabBar
	if ( [tabBarController.view.subviews count] < 2 ) {
		return;
	}

	UIView *contentView;

	if ( [[tabBarController.view.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]] ) {
		contentView = [tabBarController.view.subviews objectAtIndex:1];
	} else {
		contentView = [tabBarController.view.subviews objectAtIndex:0];
	}

	if (hide) {
		contentView.frame = tabBarController.view.bounds;
	}
	else {
		contentView.frame = CGRectMake(tabBarController.view.bounds.origin.x,
									   tabBarController.view.bounds.origin.y,
									   tabBarController.view.bounds.size.width,
									   tabBarController.view.bounds.size.height - tabBarController.tabBar.frame.size.height);
	}

	tabBarController.tabBar.hidden = hide;
}

And you are probably wondering how to change the views that are normally controlled by the tab bar? Here is the answer…just simply change the selectedIndex property of the tab bar.

tabBarController.selectedIndex = 1;

Part of this code came from a post I found on iPhoneDevSDK.com, so I took it one step further and made it a complete solution.

Here is the link to the tutorial.

I am going to start off with the the basic Hello World example that is created for you when you create a new Cocos2d project.

In the HelloWorld.h file add the following lines of code to import the needed files:

#import "SimpleAudioEngine.h"
#import "CocosDenshion.h"
#import "CDAudioManager.h"

Now we will move to the HelloWorld.m file to add the rest of the code. Inside the init method will will preload the background music so there is no lag when opening this layer. Since we only have one layer, it makes no difference. This will help when you have multiple layers in a game. One thing to note, the backgroundMusicVolume can be set from the range of 0.0 to 1.0. If you load a new background music file, you will need to set this again.

SimpleAudioEngine *sae = [SimpleAudioEngine sharedEngine];
if (sae != nil) {
	[sae preloadBackgroundMusic:@"mario-theme.mp3"];
	if (sae.willPlayBackgroundMusic) {
		sae.backgroundMusicVolume = 0.5f;
	}
}	

To play the background sound and other sounds use the following code:

// Start the background music from the beginning and stop the background music
[[SimpleAudioEngine sharedEngine] playBackgroundMusic:@"mario-theme.mp3"];
[[SimpleAudioEngine sharedEngine] stopBackgroundMusic];

// Mute and unmute all sounds
[CDAudioManager sharedManager].mute = TRUE;
[CDAudioManager sharedManager].mute = FALSE;

// Pause and unpause the background music
[[SimpleAudioEngine sharedEngine] pauseBackgroundMusic];
[[SimpleAudioEngine sharedEngine] resumeBackgroundMusic];

As you can see, CocosDenshion is very simple and easy to use. More information on it can be found here.
If you would like to see this in working action, then head on over to my github repository and download the sample project.
http://github.com/ndubbs/CocosDenshion-Example
As always, comments are welcomed and greatly appreciated.

http://itunes.com/apps/dctrafficcams

What you really want to do is register all of the possible values for each dropdownlist. Where can you do this? You have to overriding the Render sub procedure in the code behind file. Here is sample code to fix this issue:

Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
        If (Me.FormView1.CurrentMode = DetailsViewMode.Insert) Then
            Dim ddl1 As DropDownList = CType(Me.FormView1.FindControl("ddlDepartment"), DropDownList)
            Dim ddl2 As DropDownList = CType(Me.FormView1.FindControl("ddlEquipment"), DropDownList)

            'Load the data from the Departments table into the dropdownlist control for validation
            Dim departmentsAdapter As New DepartmentsTableAdapter
            For Each row As DataRow In departmentsAdapter.GetDepartments
                Page.ClientScript.RegisterForEventValidation(ddl1.UniqueID, _
                Trim(row("DepartmentName").ToString()))
            Next

            'Load the data from the Equipment table into the dropdownlist control for validation
            Dim equipmentAdapter As New EquipmentTableAdapter
            For Each row As DataRow In equipmentAdapter.GetAllEquipment
                Page.ClientScript.RegisterForEventValidation(ddl2.UniqueID, _
                Trim(row("EquipmentName").ToString()))
            Next
        End If

        MyBase.Render(writer)

End Sub

I also needed to add required field validators to the drop down lists. This will make sure the user actually selects a value. To do this was pretty simple, you just need to set the InitialValue equal to “”. See the sample code below:

<cc1:CascadingDropDown  ID="CascadingDropDown1"
                        runat="server"
                        Category="Department"
                        LoadingText="Loading..."
                        PromptText="Select a Department"
                        TargetControlID="ddlDepartment"
                        ServiceMethod="GetDepartments"
                        ServicePath="EquipmentService.asmx">
</cc1:CascadingDropDown>
<cc1:CascadingDropDown  ID="CascadingDropDown2"
                        runat="server"
                        Category="Equipment"
                        LoadingText="Loading..."
                        PromptText="Select Equipment"
                        ParentControlID="ddlDepartment"
                        TargetControlID="ddlEquipment"
                        ServiceMethod="GetEquipment"
                        ServicePath="EquipmentService.asmx">
</cc1:CascadingDropDown> 

<asp:DropDownList ID="ddlDepartment" runat="server"
			      SelectedValue='<%# Bind("Department") %>'>
</asp:DropDownList>

<asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server"
				    ControlToValidate="ddlDepartment"
            			    InitialValue=""  ErrorMessage="Department is required"
				    Display="Dynamic" >*</asp:RequiredFieldValidator>

<asp:DropDownList ID="ddlEquipment" runat="server" SelectedValue='<%# Bind("Equipment") %>'>

</asp:DropDownList>
<asp:RequiredFieldValidator id="RequiredFieldValidator2" runat="server"
				    ControlToValidate="ddlEquipment"
        			    InitialValue=""  ErrorMessage="Department is required"
				    Display="Dynamic" >*</asp:RequiredFieldValidator>

That’s it! You now have cascading drop down lists that are fully functioning in a data bound formview.

Download the Reachability project from Apple. The link to the project is:
http://developer.apple.com/iphone/library/samplecode/Reachability/index.html

The two files we will need are: Reachability.h and Reachability.m

Add SystemConiguration Framework:
1. Control click (right click) on the Frameworks folder and select Add then select Existing Frameworks.
2. Scroll down and select SystemConfiguration.framework.
3. Click Add.
4. Control click (right click) on the project icon and select Add then select Existing Files.
5. Find the Classes folder in the Reachability project, and select the files Reachability.h and Reachability.m.
6. Click Add, then make sure the check box is selected for “Copy items into destination group’s folder (if needed).”
7. Click Add.

Inside ViewController.h file, add the following statement to the top of the header file.

#import "Reachability.h"

Inside the interface definition of the view controller, add the variable definitions:

NSString *urlAddress;
NSURL *url;
NSURLRequest *requestObj;
NetworkStatus remoteHostStatus;
NetworkStatus internetConnectionStatus;

Add the following properties:

@property (nonatomic, retain) NSString *urlAddress;
@property (nonatomic, retain) NSURL *url;
@property (nonatomic, retain) NSURLRequest *requestObj;
@property NetworkStatus remoteHostStatus;
@property NetworkStatus internetConnectionStatus;

Inside ViewController.m file add the synthesize statements after the implementation statement:

@synthesize webView, urlAddress, url, requestObj;
@synthesize remoteHostStatus, internetConnectionStatus;

Inside the viewDidLoad method, add the following lines of code to set the variables:

[[Reachability sharedReachability] setAddress:@"http://www.apple.com"];
[[Reachability sharedReachability] setNetworkStatusNotificationsEnabled:YES];

Inside the programming logic, use the following lines of code to test network connectivity. Substitute the code you would like to execute where the “NSLog(@”Connection Made”)” statement is.

// Query the SystemConfiguration framework for the state of the device's network connections.
self.remoteHostStatus = [[Reachability sharedReachability] remoteHostStatus];
self.internetConnectionStatus = [[Reachability sharedReachability] internetConnectionStatus];

// Check if there is a connection
if (self.internetConnectionStatus == NotReachable && self.remoteHostStatus == NotReachable)
{
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error Loading"
                                     message:@"No Internet   Connection"
                                     delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
     [alert show];
     [alert release];
} else {
        NSLog(@"Connection Made");
}

Don’t forget to clean up and add the following statements to the dealloc method.

[urlAddress release];
[url release];
[requestObj release];

 cd desktop/cocos2d-iphone-0.8.2

Step 4: Run the install template script.

./install_template.sh

The process is complete. Startup XCode and have fun!