iOS Touch Injection ala KIF doesn't work in some cases - ios

Question

I am developing an enterprise App that injects touches. The method I use is the same with the one seen in the KIF framework (see https://github.com/square/KIF/tree/master/Additions).
There is at least one case, where this method doesn't work:
When the user taps on the device, the injection doesn't work anymore for scrollviews. They don't scroll anymore, when I inject moving touch events. When the user himself scrolls at the device, the injection does work again. It seems like a state is not set with KIFs method, but it is set by iOS when a real touch occurs.
Does anyone know more about it ? Maybe has an idea wich state it could be ? I tried already several private API calls that sounded right, but none worked.
Here is some code, describing the method I used:
Touch down:
UITouch *touch = [[[UITouch alloc] initAtLocation:point inWindow:hitView.window] autorelease];
[touch setPhase:UITouchPhaseBegan];
UIEvent *newEvent = [hitView _eventWithTouch:touch];
[_activeTouchEvents addObject:touch];
[[UIApplication sharedApplication] sendEvent:newEvent];
Touch move
UITouch* touch = _activeTouchEvent;
[touch setPhase:UITouchPhaseMoved];
[touch setLocationInWindow:point];
UIEvent *newEvent = [hitView _eventWithTouch:touch];
[[UIApplication sharedApplication] sendEvent:newEvent];
Touch up
UITouch* touch = _activeTouchEvent;
[touch setPhase:UITouchPhaseEnded];
[touch setLocationInWindow:point];
UIEvent *newEvent = [hitView _eventWithTouch:touch];
[[UIApplication sharedApplication] sendEvent:newEvent];
[_activeTouchEvent release];
_activeTouchEvent = nil;
UIView (extension)
- (UIEvent *)_eventWithTouch:(UITouch *)touch;
{
UIEvent *event = [[UIApplication sharedApplication] performSelector:#selector(_touchesEvent)];
CGPoint location = [touch locationInView:touch.window];
KIFEventProxy *eventProxy = [[KIFEventProxy alloc] init];
eventProxy->x1 = location.x;
eventProxy->y1 = location.y;
eventProxy->x2 = location.x;
eventProxy->y2 = location.y;
eventProxy->x3 = location.x;
eventProxy->y3 = location.y;
eventProxy->sizeX = 1.0;
eventProxy->sizeY = 1.0;
eventProxy->flags = ([touch phase] == UITouchPhaseEnded) ? 0x1010180 : 0x3010180;
eventProxy->type = 3001;
NSSet *allTouches = [event allTouches];
[event _clearTouches];
[allTouches makeObjectsPerformSelector:#selector(autorelease)];
[event _setGSEvent:(struct __GSEvent *)eventProxy];
[event _addTouch:touch forDelayedDelivery:NO];
[eventProxy release];
return event;
}
UITouch (extension)
- (id)initAtLocation:(CGPoint)point inWindow:(UIWindow *)window
{
self = [super init];
if (self == nil) {
return nil;
}
// Create a fake tap touch
_tapCount = 1;
_locationInWindow = point;
_previousLocationInWindow = _locationInWindow;
UIView *hitTestView = [window hitTest:_locationInWindow withEvent:nil];
_window = [window retain];
_view = [hitTestView retain];
_gestureView = [hitTestView retain];
_gestureRecognizers = [[NSMutableArray arrayWithArray:[hitTestView gestureRecognizers]] retain];
_phase = UITouchPhaseBegan;
_touchFlags._firstTouchForView = 1;
_touchFlags._isTap = 1;
_timestamp = [[NSProcessInfo processInfo] systemUptime];
return self;
}
- (void)setPhase:(UITouchPhase)phase;
{
_phase = phase;
_timestamp = [[NSProcessInfo processInfo] systemUptime];
}
Edit 1: Codeblock of "Touch down" was not right