Here is the code:
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if ([touches count] == 1) {
// code
} else {
// code
}
}
When I simulate the double tap with the Option key in simulator, the code always chooses the first part of my if statement, as if there were only 1 touch received.
Why am I not receiving both touches?
The multipleTouchEnabled
property needs to be set to YES before the view can accept multitouch.
来源:https://stackoverflow.com/questions/2287102/how-to-enable-multiple-touches-in-an-ios-app