How to use gesture recognizer in an OpenGLES application of iPhone? - iphone

Question

While I know how to use gesture recognizer in a view-based application,but when I apply the same ideas in a OpenGLSE-based application:
for example,
I add a TapGestureRecognizer,and when I tap on the EAGLView,it crashes.
So can anyone show me a standard usage of UITapGestureRecognizer in an OpenGLES-based application?
best wishes.

Answer 1

Here some sample code from one of my opengles games with gesture support. (Doesn't crash and hope it helps)
- (void)viewDidLoad {
[super viewDidLoad];
CGRect rect = [[UIScreen mainScreen] bounds];
rect.size.height = 320;
rect.size.width = 480;
rect.origin.x = 0;
rect.origin.y = 0;
glView = [[EAGLView alloc] initWithFrame:rect pixelFormat:GL_RGB565_OES depthFormat:GL_DEPTH_COMPONENT16_OES preserveBackbuffer:NO];
[self.view addSubview: glView];
[glView addSubview: minimapView];
if(!shell->InitApplication())
printf("InitApplication error\n");
[NSTimer scheduledTimerWithTimeInterval:(1.0 / kFPS) target:self selector:#selector(update) userInfo:nil repeats:YES];
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(Panned:)];
[glView addGestureRecognizer:[pan autorelease]];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(Tapped:)];
[glView addGestureRecognizer:[tap autorelease]];
UITapGestureRecognizer *dbltap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(DoubleTapped:)];
[dbltap setNumberOfTapsRequired:2];
[glView addGestureRecognizer:[dbltap autorelease]];
UILongPressGestureRecognizer *longpress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(LongPressed:)];
[glView addGestureRecognizer:[longpress autorelease]];
}
And the selector function
- (void) LongPressed:(UILongPressGestureRecognizer*)sender{
NSLog(#"Long Pressed");
}