Text Relatives II

[Text Relatives II]

　　When your app determines that the user has requested the edit menu—which could be the action of making a selection—you should complete the following steps to display the menu:

1. Call the sharedMenuController class method of UIMenuController to get the global menu-controller instance.

2. Compute the boundaries of the selection and with the resulting rectangle call the setTargetRect:inView: method. The edit menu is displayed above or below this rectangle, depending how close the selection is to the top or bottom of the screen.

3. Call the setMenuVisible:animated: method (with YES for both arguments) to animate the display of the edit menu above or below the selection.

　　Displaying the edit menu:

 1 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
 2     UITouch *theTouch = [touches anyObject];
 3  
 4     if ([theTouch tapCount] == 2  && [self becomeFirstResponder]) {
 5  
 6         // selection management code goes here...
 7  
 8         // bring up edit menu.
 9         UIMenuController *theMenu = [UIMenuController sharedMenuController];
10         CGRect selectionRect = CGRectMake (currentSelection.x, currentSelection.y, SIDE, SIDE);
11         [theMenu setTargetRect:selectionRect inView:self];
12         [theMenu setMenuVisible:YES animated:YES];
13  
14     }
15 }

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