IOS自定义复制、拷贝功能

http://ios-iphone.diandian.com/post/2012-03-30/18195173

（1）、重写canBecomeFirstResponder方法

- (BOOL)canBecomeFirstResponder{

[super canBecomeFirstResponder];

return YES;

}

（2）、创建自定义UIMenuController

UIMenuItem *share = [[UIMenuItem alloc] initWithTitle:@"分享" action:@selector(share:)];

UIMenuItem *email = [[UIMenuItem alloc] initWithTitle:@"邮件" action:@selector(email:)];

UIMenuItem *print = [[UIMenuItem alloc] initWithTitle:@"打印" action:@selector(print:)];

UIMenuController *menu = [UIMenuController sharedMenuController];

[menu setMenuItems:[NSArray arrayWithObjects:share, email,print, nil]];

[menu setTargetRect:self.frame inView:self.superview];

[menu setMenuVisible:YES animated:YES];

（3）、判断显示哪个menu

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender

{

[super canPerformAction:action withSender:sender];

if ( action == @selector(share:) || action == @selector(email:) || action == @selector(print:))

{

return YES;

}

else

{

return NO;

}

}