I would like to handle a long press on a UITableViewCell to print a "quick access menu". Does someone already did this ?
Particularly the gesture recognize on UITableView ?
Source: Tips4all
Source: Tips4all
I have a 2.67 GHz Celeron processor, 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding is that the Android emulator should start fairly quickly on such a machine, but for me it does not. I have followed all instructions in setting up the IDE, SDKs, JDKs and such and have had some success in staring the emulator quickly but is very particulary. How can I, if possible, fix this problem?
First add the long press gesture recognizer to the table view:
ReplyDeleteUILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:@selector(handleLongPress:)];
lpgr.minimumPressDuration = 2.0; //seconds
lpgr.delegate = self;
[self.myTableView addGestureRecognizer:lpgr];
[lpgr release];
Then in the gesture handler:
-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer
{
CGPoint p = [gestureRecognizer locationInView:self.myTableView];
NSIndexPath *indexPath = [self.myTableView indexPathForRowAtPoint:p];
if (indexPath == nil)
NSLog(@"long press on table view but not on a row");
else
NSLog(@"long press on table view at row %d", indexPath.row);
}
You have to be careful with this so that it doesn't interfere with the user's normal tapping of the cell and also note that handleLongPress may fire multiple times before user lifts their finger.
Use the UITouch timestamp property in touchesBegan to launch a timer or stop it when touchesEnded got fired
ReplyDeleteLooks to be more efficient to add the recognizer directly to the cell as shown here:
ReplyDeletehttp://www.cocoanetics.com/2010/08/taphold-for-tableview-cells-then-and-now/
(scroll to the example at the bottom)