Uma contagem de toques iniciados não é igual à contagem de toques finais
Eu tenho o seguinte código para fins de teste:
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[self customTouchHandler:touches];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
[self customTouchHandler:touches];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
[self customTouchHandler:touches];
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
[self customTouchHandler:touches];
}
- (void)customTouchHandler:(NSSet *)touches
{
for(UITouch* touch in touches){
if(touch.phase == UITouchPhaseBegan)
touchesStarted++;
if(touch.phase == UITouchPhaseEnded || touch.phase == UITouchPhaseCancelled)
touchesFinished++;
}
NSLog(@"%d / %d", touchesStarted, touchesFinished);
}
Suponho que quando não há toque na tela,touchesStarted deve ser sempre igual atouchesFinished, mas eu tenho uma saída bastante estranha:
2014-04-16 13:44:27.780 App[5925:60b] 2 / 0
2014-04-16 13:44:27.911 App[5925:60b] 2 / 1
Pressionei a tela com dois dedos e os soltei quase (mas não) ao mesmo tempo.
Estou esquecendo de algo? Vários toques ativados para minha visão. A propósito, a vista éSKView e o código pertence ao meu costumeSKScene.
ATUALIZAR
Como muitos de vocês não conseguem reproduzir esse comportamento estranho, preparei um exemplo de projeto do Xcode:https://www.dropbox.com/s/qmgxka1gtgwquio/TapTest.zip
Tente tocar com dois dedos ao mesmo tempo várias vezes.touchesStarted deve ser igual atouchesEnded quando você remove os dedos, certo? Mas eles não são. Aqui está a minha saída:
2014-04-24 12:49:06.359 TapTest[8207:60b] 1 / 0
2014-04-24 12:49:06.376 TapTest[8207:60b] 2 / 0
2014-04-24 12:49:06.458 TapTest[8207:60b] 2 / 0
2014-04-24 12:49:06.460 TapTest[8207:60b] 2 / 1
2014-04-24 12:49:06.491 TapTest[8207:60b] 2 / 2
2014-04-24 12:49:07.325 TapTest[8207:60b] 3 / 2
2014-04-24 12:49:07.342 TapTest[8207:60b] 4 / 2
2014-04-24 12:49:07.408 TapTest[8207:60b] 4 / 2
2014-04-24 12:49:07.410 TapTest[8207:60b] 4 / 3
2014-04-24 12:49:07.426 TapTest[8207:60b] 4 / 3
2014-04-24 12:49:07.441 TapTest[8207:60b] 4 / 4
2014-04-24 12:49:07.842 TapTest[8207:60b] 6 / 4
2014-04-24 12:49:07.925 TapTest[8207:60b] 6 / 4
2014-04-24 12:49:07.941 TapTest[8207:60b] 6 / 5
2014-04-24 12:49:08.042 TapTest[8207:60b] 8 / 5
2014-04-24 12:49:08.125 TapTest[8207:60b] 8 / 6
2014-04-24 12:49:08.259 TapTest[8207:60b] 9 / 6
2014-04-24 12:49:08.293 TapTest[8207:60b] 9 / 6
2014-04-24 12:49:08.308 TapTest[8207:60b] 9 / 7
2014-04-24 12:49:08.425 TapTest[8207:60b] 10 / 7
2014-04-24 12:49:08.442 TapTest[8207:60b] 11 / 7
2014-04-24 12:49:08.444 TapTest[8207:60b] 11 / 7
2014-04-24 12:49:08.492 TapTest[8207:60b] 11 / 8
2014-04-24 12:49:08.575 TapTest[8207:60b] 11 / 9
2014-04-24 12:49:08.642 TapTest[8207:60b] 12 / 9
2014-04-24 12:49:08.659 TapTest[8207:60b] 13 / 9
2014-04-24 12:49:08.660 TapTest[8207:60b] 13 / 9
2014-04-24 12:49:08.692 TapTest[8207:60b] 13 / 9
2014-04-24 12:49:08.694 TapTest[8207:60b] 13 / 10
2014-04-24 12:49:08.708 TapTest[8207:60b] 13 / 10
2014-04-24 12:49:08.741 TapTest[8207:60b] 13 / 11
2014-04-24 12:49:08.792 TapTest[8207:60b] 14 / 11
2014-04-24 12:49:08.809 TapTest[8207:60b] 15 / 11
2014-04-24 12:49:08.810 TapTest[8207:60b] 15 / 11
2014-04-24 12:49:08.890 TapTest[8207:60b] 15 / 11
2014-04-24 12:49:08.892 TapTest[8207:60b] 15 / 12
2014-04-24 12:49:08.908 TapTest[8207:60b] 15 / 13
2014-04-24 12:49:09.042 TapTest[8207:60b] 17 / 13
2014-04-24 12:49:09.141 TapTest[8207:60b] 17 / 14
2014-04-24 12:49:09.242 TapTest[8207:60b] 19 / 14
2014-04-24 12:49:09.341 TapTest[8207:60b] 19 / 14
2014-04-24 12:49:09.358 TapTest[8207:60b] 19 / 15
2014-04-24 12:49:09.441 TapTest[8207:60b] 21 / 15
2014-04-24 12:49:09.525 TapTest[8207:60b] 21 / 15
2014-04-24 12:49:09.542 TapTest[8207:60b] 21 / 15
2014-04-24 12:49:09.559 TapTest[8207:60b] 21 / 16
2014-04-24 12:49:09.608 TapTest[8207:60b] 22 / 16
2014-04-24 12:49:09.625 TapTest[8207:60b] 23 / 16
2014-04-24 12:49:09.626 TapTest[8207:60b] 23 / 16
2014-04-24 12:49:09.708 TapTest[8207:60b] 23 / 16
2014-04-24 12:49:09.709 TapTest[8207:60b] 23 / 17
2014-04-24 12:49:09.774 TapTest[8207:60b] 23 / 18
2014-04-24 12:49:09.810 TapTest[8207:60b] 24 / 18
2014-04-24 12:49:09.826 TapTest[8207:60b] 25 / 18
2014-04-24 12:49:09.828 TapTest[8207:60b] 25 / 18
2014-04-24 12:49:09.908 TapTest[8207:60b] 25 / 18
2014-04-24 12:49:09.909 TapTest[8207:60b] 25 / 19
2014-04-24 12:49:09.974 TapTest[8207:60b] 25 / 20
2014-04-24 12:49:09.992 TapTest[8207:60b] 26 / 20
2014-04-24 12:49:10.026 TapTest[8207:60b] 27 / 20
2014-04-24 12:49:10.027 TapTest[8207:60b] 27 / 20
2014-04-24 12:49:10.091 TapTest[8207:60b] 27 / 20
2014-04-24 12:49:10.094 TapTest[8207:60b] 27 / 21
2014-04-24 12:49:10.125 TapTest[8207:60b] 27 / 22