IOS Study Notes 36 -- UIPasteboard/UIMenuController (2)

Okay. In the previous article, we talked about generating a clipboard on UILabel. In this article, we will write two ways to use the clipboard on UITableView;

I. Use in custom Cells

In fact, cell usage is basically the same as label usage.

1. Release Method:

-(BOOL) canBecomeFirstResponder {

Return YES;

}

-(BOOL) can1_maction :( SEL) action withSender :( id) sender {

If (action ==@ selector (cut :)){

Return NO;

}

Else if (action ==@ selector (copy :)){

Return YES;

}

Else if (action ==@ selector (paste :)){

Return NO;

}

Else if (action ==@ selector (select :)){

Return NO;

}

Else if (action ==@ selector (selectAll :)){

Return NO;

}

Else {

Return [super canPerformAction: action withSender: sender];

}

}

Then, of course, the copy method is implemented ..

-(Void) copy :( id) sender {

NSLog (@ "copy ");

UIPasteboard * pasteboard = [UIPasteboard generalPasteboard];

[Pasteboard setString: [[self textLabel] text];

}

However, the most important step is to use this method to stimulate the copy menu.

-(Void) setHighlighted :( BOOL) highlighted animated :( BOOL) animated {

[[Self delegate] performSelector: @ selector (showMenu :)

WithObject: self afterDelay: 0.9f];

[Super setHighlighted: highlighted animated: animated];

}

As for the Menu Generation, you should have read the previous article and are familiar with the code:

// Display menu

-(Void) showMenu :( id) cell {

If ([cell isHighlighted]) {

[Cell becomeFirstResponder];

UIMenuController * menu = [UIMenuController sharedMenuController];

[Menu setTargetRect: [cell frame] inView: [self view];

[Menu setMenuVisible: YES animated: YES];

}

}

Okay, the rest is about how to use a custom cell. You should be familiar with it. I will not introduce it one by one. Since then, the first method of using clipboard has been introduced.
II. The second method is simpler, because (_ MAC_NA ,__ IPHONE_5_0) three methods have been released, which is very easy to use. I will directly use Farah above.

-(BOOL) tableView :( UITableView *) tableView shouldShowMenuForRowAtIndexPath :( NSIndexPath *) indexPath {

Return YES;

}

 

-(BOOL) tableView :( UITableView *) tableView can1_maction :( SEL) action forRowAtIndexPath :( NSIndexPath *) indexPath withSender :( id) sender {

If (action ==@ selector (copy :)){

Return YES;

}

Return NO;

}

 

-(Void) tableView :( UITableView *) tableView upload maction :( SEL) action forRowAtIndexPath :( NSIndexPath *) indexPath withSender :( id) sender {

UITableViewCell * cell = [tableView cellForRowAtIndexPath: indexPath];

If (action ==@ selector (copy :)){

[UIPasteboard generalPasteboard]. string = cell. textLabel. text;

}

}

With the above three methods, I think you can easily use the clipboard in the cell ..

Well, the second article is complete. Continue to focus on customizing the clipboard ----- see the next version.