This is it ! Code for Full Screen Camera STEP bySTEP idiot prove !

Question

1: Create a Normal View Based Application
2: Drag in "BTLFullScreenCameraController" *.h and *.m files into Xcode.
3: In the Header file, implement this:
#import "BTLFullScreenCameraController.h"
4: Add in the delegations <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
UIView *BaseView; //Base View that everything else adds to.
BTLFullScreenCameraController *camera; //The Magic
UIImageView *LCARS_Frame; //The ImageView that frames the whole camera [LCARS Frame]
UILabel *label; //Labels and more labels [Possibly the information tags]
@property (nonatomic, retain) UIView *BaseView;
@property (nonatomic, retain) BTLFullScreenCameraController *camera;
@property (nonatomic, retain) UIImageView *LCARS_Frame;
@property (nonatomic, retain) UILabel *label;
//Camera Initialization
- (void)initCamera;
- (void)startCamera;
5: In the *.m File:
On the of the @implementation file, add this:
#define OVERLAY_ALPHA 0.50f
@synthesize BaseView;
@synthesize camera;
@synthesize LCARS_Frame;
@synthesize label;
- (void)loadView
self.navigationController.toolbarHidden = YES;
self.navigationController.navigationBarHidden = YES;
[UIApplication sharedApplication].statusBarHidden = YES; //This code remove the time and battery indicator top bar.
self.BaseView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; //You need to Rect the BaseView to take up the battery indicator's space.
self.BaseView.opaque = NO; //This somehow affects the LCARS Frame image that will be super imposed on top by allow the next line to work.
self.BaseView.alpha = OVERLAY_ALPHA; //This line can only work after the previous line.
//Add Image First
LCARS_Frame = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"binocs.png"]] autorelease];
[self.BaseView addSubview:LCARS_Frame];
//Then Label, else label will be under the opacity of the image and get darker.
label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
label.text = @"AR Up";
label.textAlignment = UITextAlignmentCenter;
label.adjustsFontSizeToFitWidth = YES;
label.textColor = [UIColor redColor];
label.backgroundColor = [UIColor darkGrayColor];
label.shadowOffset = CGSizeMake(0, -1);
label.shadowColor = [UIColor blackColor];
[self.BaseView addSubview:label];
self.view = self.BaseView; //Set BaseView as the default view.
[super viewDidLoad];
//Just copy and paste this code, it will work.
-(void) viewDidAppear:(BOOL)animated
[self initCamera];
[self startCamera];
- (void) initCamera {
if ([BTLFullScreenCameraController isAvailable]) {
NSLog(@"Initializing camera.");
BTLFullScreenCameraController *tmpCamera = [[BTLFullScreenCameraController alloc] init];
[tmpCamera.view setBackgroundColor:[UIColor blueColor]];
[tmpCamera setCameraOverlayView:self.view];
tmpCamera.overlayController = self;
#ifdef BTLINCLUDE_IMAGESHARING
BTLImageShareController *shareController = [[BTLImageShareController alloc] init];
shareController.delegate = self;
[self.view addSubview:shareController.view];
tmpCamera.shareController = shareController;
#endif
self.camera = tmpCamera;
[tmpCamera release];
} else {
NSLog(@"Camera not available.");
- (void)startCamera {
// TODO: figure out why simply setting the view is not working
// since the modal view is not as desirable
// This isn't working but should:
//self.view = self.camera.view;
// Modal view always works, but it's harder to work with.
[self.camera displayModalWithController:self animated:YES];

Answer 1

1) Use, this can be done, as you said in 1.4 there is Full Screen mode for windows.
2) There is no way to catch Alt-Tab. It would too dangerous to allow to catch it and prevent. All you can do is to react on it, I am sure you'll receive some focus event(DEACTIVATE, WINDOW_LOST_FOCUS, FOCUS_LOST) when user switches from your application by Alt-Tab
3) There is no way to prevent screen capture, it is system call, I am sure you can write some C application using hooks to catch and filter out key sequence for screen capture but not in Java.