UIMenuController method setTargetRect:inView: not working in UITableView

只愿长相守 提交于 2019-11-29 01:53:37

1) First, please do this in your view controller's viewDidLoad method.

 UIMenuItem *testMenuItem = [[UIMenuItem alloc] initWithTitle:@"Test"
    action:@selector(test:)];
[[UIMenuController sharedMenuController] setMenuItems: @[testMenuItem]];
 [[UIMenuController sharedMenuController] update];

 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(menuControllerWillShow:) name:UIMenuControllerWillShowMenuNotification object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(menuControllerWillHide:) name:UIMenuControllerWillHideMenuNotification object:nil];

2) Then, add these two Methods. and set menuFrame inView to your cell

-(void)menuControllerWillShow:(NSNotification *)notification{
 //Remove Will Show Notification to prevent
 // "menuControllerWillShow" function to be called multiple times
 [[NSNotificationCenter defaultCenter]removeObserver:self name:UIMenuControllerWillShowMenuNotification object:nil];

//Hide the Original Menu View
UIMenuController* menuController = [UIMenuController sharedMenuController];
CGSize size = menuController.menuFrame.size;
CGRect menuFrame;
menuFrame.origin.x = self.tableView.frame.origin.x;
menuFrame.size = size;
[menuController setMenuVisible:NO animated:NO];

//Modify its target rect and show it again to prevent glitchy appearance
   [menuController setTargetRect:menuFrame inView:cell];
    [menuController setMenuVisible:YES animated:YES];
}

 -(void)menuControllerWillHide:(NSNotification *)notification{
    //re-register menuControllerWillShow
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(menuControllerWillShow:)
 name:UIMenuControllerWillShowMenuNotification object:nil];
 }

3) Implement tableView Delegates and implement these methods.

- (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath {
    cell = (TableViewCell*)[tableView cellForRowAtIndexPath:indexPath];

    return YES;
}
-(BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
    return NO;
}
- (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
    // required
}

4) Setup the cells (subclassing UITableViewCell) with

 -(BOOL) canPerformAction:(SEL)action withSender:(id)sender {
    return (action == @selector(copy:) || action == @selector(test:)); } /// this methods will be called for the cell menu items
 -(void) test: (id) sender {
     NSLog(@"test"); }

 -(void) copy:(id)sender {
   NSLog(@"copy"); }
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