Detect touch on whole screen - ios

Question

I want to call a method whenever a specific UIViewController is touched.
-touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event is a method that does what I'm looking for, exept it doesn't detect a touch on neither the statur bar, navigation bar or toolbar. How can I make a method that runs everytime the UIViewController is touched? Or in other words, the whole screen?

Answer 1

try adding a gesture recognition. to your window object, since it's a subclass of a uiview.
or like #Bamsworld said. "For full screen detection (including status bar) I think you'll need to sub class UIWindow and make it becomeFirstResponder: Override touches and handle from window sub class."

Answer 2

Subclass UIApplication say MyApplication and implement the method
- (void)sendEvent:(UIEvent *)event {
[super sendEvent:event];
// Do whatever you want
}
Then in main.m change the default implementation to
int main(int argc, char *argv[])
{
#autoreleasepool {
return UIApplicationMain(argc, argv, NSStringFromClass([MyApplication class]), NSStringFromClass([YourAppdelegate class]));
}
}
You will get each and every action in method
- (void)sendEvent:(UIEvent *)event

Answer 3

#import <QuartzCore/QuartzCore.h>
- (void)viewDidLoad
{
[super viewDidLoad];
[self.view setMultipleTouchEnabled:YES];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
// Remove old red circles on screen
NSArray *subviews = [self.view subviews];
for (UIView *view in subviews) {
[view removeFromSuperview];
}
// Enumerate over all the touches and draw a red dot on the screen where the touches were
[touches enumerateObjectsUsingBlock:^(id obj, BOOL *stop) {
// Get a single touch and it's location
UITouch *touch = obj;
CGPoint touchPoint = [touch locationInView:self.view];
// Draw a red circle where the touch occurred
UIView *touchView = [[UIView alloc] init];
[touchView setBackgroundColor:[UIColor redColor]];
touchView.frame = CGRectMake(touchPoint.x, touchPoint.y, 30, 30);
touchView.layer.cornerRadius = 15;
[self.view addSubview:touchView];
[touchView release];
}];
}