複製/剪下/粘貼螢幕中的圖片

標籤：

使用touchesEnded:withEvent：自訂複製粘貼菜單，copy:複製螢幕中的圖片,cut:剪下螢幕中的圖片,paste:粘貼螢幕中的圖片.

 1 @implementation prjCopyAndPaste 2  3 -(void)viewDidLoad 4 { 5     [super viewDidLoad]; 6 } 7  8 -(void)viewWillAppear:(BOOL)animated 9 {10     [super viewWillAppear:animated];11     self.view.backgroundColor = [UIColor whiteColor];12     13     [self setupImageWithName:@"img_01" center:self.view.center];14     [self setupImageWithName:@"img_02" center:CGPointMake(200, 300)];15     [self setupImageWithName:@"img_03" center:CGPointMake(50, 80)];16 }17 18 -(void)setupImageWithName:(NSString *)imageNamed center:(CGPoint)point19 {20     UIImageView *bug = [[UIImageView alloc]initWithImage:[UIImage imageNamed:imageNamed]];21     bug.center = point;22     [self.view addSubview:bug];23 }24 //成為第一響應者顯示編輯菜單25 -(BOOL)canBecomeFirstResponder26 {27     return YES;28 }29 30 -(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event31 {32     UITouch *touch = [touches anyObject];33     //連續兩次觸碰顯示菜單34     if ([self becomeFirstResponder] && 1 < [touch tapCount]) {35         UIMenuController *menu = [UIMenuController sharedMenuController];36         self.touchPoint = [touch locationInView:self.view];37         CGRect minRect;38         minRect.origin = self.touchPoint;39         [menu setTargetRect:minRect inView:self.view];40         [menu setMenuVisible:YES animated:YES];41     }42 }43 44 -(BOOL)canPerformAction:(SEL)action withSender:(id)sender45 {46     if (@selector(copy:) == action) {47         if ([self imageContainsPoint:self.touchPoint]) {48             return YES;49         }50     }else if(@selector(cut:) == action){51         if ([self imageContainsPoint:self.touchPoint]) {52             return YES;53         }54     }else if(@selector(paste:) == action){55         return (nil != [UIPasteboard generalPasteboard].image);56     }57     return NO;58 }59 60 -(UIImageView *)imageContainsPoint:(CGPoint)point61 {62     for (UIView *view in self.view.subviews) {63         if (CGRectContainsPoint(view.frame, point)) {64             if ([view isKindOfClass:[UIImageView class]]) {65                 return (UIImageView *)view;66             }67         }68     }69     return nil;70 }71 -(void)copy:(id)sender72 {73     UIImageView *imageView = [self imageContainsPoint:self.touchPoint];74     if (imageView) {75         [UIPasteboard generalPasteboard].image = imageView.image;76     }77 }78 -(void)cut:(id)sender79 {80     UIImageView *imageView = [self imageContainsPoint:self.touchPoint];81     if (imageView) {82         [imageView removeFromSuperview];83     }84 }85 -(void)paste:(id)sender86 {87     UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];88     if (pasteboard.image) {89         UIImageView *bug = [[UIImageView alloc] initWithImage:pasteboard.image];90         bug.center = self.touchPoint;91         [self.view addSubview:bug];92         pasteboard.image = bug.image;93     }94 }95 96 97 @end

View Code

實現效果

複製/剪下/粘貼螢幕中的圖片