UIMenuController,UIPasteboard:複製，粘貼詳解

標籤：複製 粘貼

首先用下面四張圖，說明我要實現的功能。【講一張圖片複製到另外一個UIimageView上】

實現代碼如下：

-(IBAction)panGestureTop:(UILongPressGestureRecognizer *)longPress{     UIMenuItem * itemPase = [[UIMenuItem alloc] initWithTitle:@"複製" action:@selector(copyimage)];     UIMenuItem * itemTrans = [[UIMenuItem alloc] initWithTitle:@"轉寄" action:@selector(trans)];     UIMenuItem * itemCollect = [[UIMenuItem alloc] initWithTitle:@"收藏" action:@selector(collect)];     UIMenuItem * itemJoin = [[UIMenuItem alloc] initWithTitle:@"加入" action:@selector(join)];        UIMenuController * menuController = [UIMenuController sharedMenuController];    [menuController setMenuItems: @[itemPase,itemCollect,itemTrans,itemJoin]];        CGPoint location = [longPress locationInView:[longPress view]];    CGRect menuLocation = CGRectMake(location.x, location.y, 0, 0);    [menuController setTargetRect:menuLocation inView:[longPress view]];    menuController.arrowDirection = UIMenuControllerArrowDown;    [menuController setMenuVisible:YES animated:YES];}-(BOOL)canBecomeFirstResponder{    return YES;}-(void)copyimage{        UIPasteboard * pasterBoard = [UIPasteboard pasteboardWithName:@"com.test.image" create:YES];    pasterBoard.image = [self.topImgView image];    }-(IBAction)panGestureBottom:(UILongPressGestureRecognizer *)longPress{    UIMenuItem * itemPase = [[UIMenuItem alloc] initWithTitle:@"粘貼" action:@selector(pase)];        UIMenuController * menuController = [UIMenuController sharedMenuController];    [menuController setMenuItems: @[itemPase]];        CGPoint location = [longPress locationInView:[longPress view]];    CGRect menuLocation = CGRectMake(location.x, location.y, 0, 0);    [menuController setTargetRect:menuLocation inView:[longPress view]];    menuController.arrowDirection = UIMenuControllerArrowDown;        [menuController setMenuVisible:YES animated:YES];}-(void)pase{    UIPasteboard * pasterBoard = [UIPasteboard pasteboardWithName:@"com.test.image" create:NO];    self.bottomImgView.image = pasterBoard.image;}

當操作的時候，我們需要把當前的UIViewController變成第一響應者。

複製相當於copy了一份，加入我在複製過圖片之後，粘貼圖片之前，把原來的那個image刪除掉，則依然可以進行粘貼。