捏像Reeder應用程序拍照全屏

Question

試圖想出一個方法來做同樣的事情reeder應用程序的創建者在他的iphone/ipad應用程序與捏到展開照片全屏。

我有一個表格單元格中的uiimageview，我想轉換到一個全屏視圖上捏打開，或者雙擊。也想使用類似的動畫。

任何提示將不勝感激！

Answer 1

好吧，我設法把我自己放在一起。不太確定如何使用過渡方法，但我需要在同一位置複製視圖，然後將其解決。

http://screencast.com/t/MLTuGkIYh

所以在我的小區包含大圖像I掛鉤都捏，然後點擊手勢識別。

self.imageView.contentMode = UIViewContentModeScaleAspectFit; 
    self.imageView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight); 
    UIPinchGestureRecognizer *pinchGesture = [[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinchGesture:)] autorelease]; 
    UITapGestureRecognizer *tapGesture = [[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)] autorelease]; 
    tapGesture.numberOfTapsRequired = 2; 
    self.imageView.userInteractionEnabled = YES; 
    self.imageView.multipleTouchEnabled = YES; 
    [self.imageView addGestureRecognizer:pinchGesture]; 
    [self.imageView addGestureRecognizer:tapGesture]; 
    [cell.contentView addSubview:self.imageView]; 

然後這裏是其餘的代碼。基本上，當我認識到手勢（並捏，確保它完成）我把重複的視圖在同一個確切的位置（通過convertRect東西獲得），然後動畫化其框架和背景顏色。從它返回時，我做相反的事。

- (void)handlePinchGesture:(id)sender 
{ 
    if (((UIPinchGestureRecognizer *)sender).state == UIGestureRecognizerStateEnded) { 
     if(((UIPinchGestureRecognizer *)sender).view == self.imageView) 
     { 
      if (((UIPinchGestureRecognizer *)sender).scale > 1) { 
       [self showFloorPlanFullScreen]; 
      } 
     } else { 
      if (((UIPinchGestureRecognizer *)sender).scale < 1) { 
       [self closeFloorPlanFullScreen]; 
      } 
     } 
    } 
} 
- (void)handleTap:(id)sender 
{ 
    if (((UITapGestureRecognizer *)sender).view == self.imageView) { 
     [self showFloorPlanFullScreen]; 
    } else { 
     [self closeFloorPlanFullScreen]; 
    } 
} 

- (void)showFloorPlanFullScreen 
{ 
    CGRect newRect = [self.imageView convertRect:self.imageView.bounds toView:[self.splitViewController.view superview]]; 
    UIImage *image = self.imageView.image; 
    self.fullScreenImageView = [[[UIImageView alloc] initWithImage:image] autorelease]; 

    UIPinchGestureRecognizer *pinchGesture = [[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinchGesture:)] autorelease]; 
    UITapGestureRecognizer *tapGesture = [[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)] autorelease]; 
    tapGesture.numberOfTapsRequired = 2; 
    self.fullScreenImageView.userInteractionEnabled = YES; 
    self.fullScreenImageView.multipleTouchEnabled = YES; 
    [self.fullScreenImageView addGestureRecognizer:pinchGesture]; 
    [self.fullScreenImageView addGestureRecognizer:tapGesture]; 

    self.fullScreenImageView.contentMode = UIViewContentModeScaleAspectFit; 
    self.fullScreenImageView.frame = newRect; 
    self.fullScreenImageView.backgroundColor = [UIColor clearColor]; 
    [[self.splitViewController.view superview] addSubview:self.fullScreenImageView]; 

    CGRect splitViewRect = self.splitViewController.view.frame; 
    [UIView animateWithDuration:0.5 animations:^{ 
     self.fullScreenImageView.backgroundColor = [UIColor blackColor]; 
     self.fullScreenImageView.frame = splitViewRect; 
    }]; 
} 


- (void)closeFloorPlanFullScreen 
{ 
    CGRect newRect = [self.imageView convertRect:self.imageView.bounds toView:[self.splitViewController.view superview]]; 
    [UIView animateWithDuration:0.5 
        animations:^{ 
     self.fullScreenImageView.backgroundColor = [UIColor clearColor]; 
     self.fullScreenImageView.frame = newRect; 
        } 
        completion:^(BOOL finished) { 
         [self.fullScreenImageView removeFromSuperview]; 
         self.fullScreenImageView = nil; 
        }]; 
} 

如果你想要的圖片實際大小調整變焦時，我將盡快推薦添加重複的視圖作爲捏開始（只要它的縮放> 1），然後應用轉換：

CGAffineTransform myTransformation = CGAffineTransformMakeScale(((UIPinchGestureRecognizer *)sender).scale, ((UIPinchGestureRecognizer *)sender).scale); 
self.fullScreenImageView.transform = myTransformation; 

一旦捏收到結束狀態，我會淡入黑色並調整框架。我決定不採用這種方法，因爲我認爲只是認識到捏或雙擊是足夠好的。

Answer 2

您必須將UIImageView嵌入到UIControl中，並將IBAction鏈接到UIControl事件。

Answer 3

在圖像視圖上使用UIPinchGestureRecognizer可識別捏合和UIView轉換方法，以將圖像視圖最大化爲全尺寸。