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[英]how to fail UILongPressGestureRecognizer for UIPanGestureRecognizer?
[英]UILongPressGestureRecognizer don't work after the use of a UIPanGestureRecognizer
當我的hitView部分來自UIPanGestureRecognizer之后的超級視圖時,UILongPressGestureRecognizer不起作用。 為什么?
- (id)initWithFrame:(CGRect)frame
{
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
[panGesture setMaximumNumberOfTouches:1];
[panGesture setDelegate:self];
[_glassesImage addGestureRecognizer:panGesture];
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(enchance:)];
longPressGesture.minimumPressDuration = 0.2;
[_glassesImage addGestureRecognizer:longPressGesture];
[self addSubview:_glassesImage];
}
- (void)enchance:(UILongPressGestureRecognizer *)gestureRecognizer
{
UIView *hitView = [gestureRecognizer view];
hitView.alpha=0.6;
inLongPress=YES;
gestureRecognizer.allowableMovement = 200;
if ([gestureRecognizer state] == UIGestureRecognizerStateEnded){
hitView.alpha=1.0;
inLongPress=NO;
}
}
嘗試為手勢識別器定義一個委托,然后提供以下實現:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
( 參考 )
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}
將委托添加到longPressGesture。
longPressGesture.delegate = self;
我認為這將對您有所幫助。
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