我们如何检测点按并按住上UITableViewCell ？
Answer 1:
在iOS 3.2或更高版本可以使用UILongPressGestureRecognizer
Answer 2:
下面是从我的应用程序直接取消代码。 您应该将这些方法（和一个布尔_cancelTouches成员）添加到您的UITableViewCell派生类。
-(void) tapNHoldFired {
self->_cancelTouches = YES;
// DO WHATEVER YOU LIKE HERE!!!
}
-(void) cancelTapNHold {
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(tapNHoldFired) object:nil];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
self->_cancelTouches = NO;
[super touchesBegan:touches withEvent:event];
[self performSelector:@selector(tapNHoldFired) withObject:nil afterDelay:.7];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[self cancelTapNHold];
if (self->_cancelTouches)
return;
[super touchesEnded:touches withEvent:event];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
[self cancelTapNHold];
[super touchesMoved:touches withEvent:event];
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
[self cancelTapNHold];
[super touchesCancelled:touches withEvent:event];
}
Answer 3:
//Add gesture to a method where the view is being created. In this example long tap is added to tile (a subclass of UIView):
// Add long tap for the main tiles
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longTap:)];
[tile addGestureRecognizer:longPressGesture];
[longPressGesture release];
-(void) longTap:(UILongPressGestureRecognizer *)gestureRecognizer{
NSLog(@"gestureRecognizer= %@",gestureRecognizer);
if ([gestureRecognizer state] == UIGestureRecognizerStateBegan) {
NSLog(@"longTap began");
}
}
Answer 4:
你或许应该处理UIControlTouchDown事件，这取决于你的意思是“持有”，火的NSTimer，因为你发起的触摸，将计算的时间间隔，并在烧成时或释放触摸（UIControlTouchUpInside和UIControlTouchUpOutside事件）无效的。 当计时器火灾，你有你的“点击并按住”检测。
文章来源: Detecting Tap & Hold in UITableView cells
