的TouchEvent在UIScrollView中

Question

所有子視圖，

我有一個問題，我已經看過了所有可能的答案在計算器上（和其它互聯網），但我嘗試所有的解決方案，沒有任何工程....

我有一個UIImageView作爲子視圖來創建一個板的UIScrollView。我可以放大和縮小，工作正常。也滾動工作正常！

現在，我想拖拽&將其他UIImageViews（圖塊）拖放到ScrollView中，同時也將ScrollView拖出。但是當我將UIImageView拖放到ScrollView中時，我無法拖放子視圖。

我已經在viewDidLoad中設置了setCanCancelContentTouches：UIScrollView的NO。
我已經創建了一個子類TileImageView，並在init中將exclusiveTouch設置爲YES。
注意： boardImage是一個'正常的'UIImageView'，這些圖塊與子類一起！

此外：當我設置boardImage的UserInteraction設置爲NO時，ScrollView會縮放但不會記錄touchBegan。如果我將它設置爲YES，ScrollView不會縮放，但touchBegan會被記錄下來。

所以我離開它，所以我可以縮放，但是一旦它們在ScrollView中，它們不再可拖動。
我在做什麼錯？或者我錯過了什麼？

PS：設置delaysContentTouches屬性使滾動無效的，這樣也沒有辦法了......

代碼： RootViewController_iphone.m

@implementation RootViewController_iphone 

@synthesize boardScrollView; 
@synthesize dragObject; 
@synthesize boardImage; 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view from its nib. 

    UIImage *image = [UIImage imageNamed:@"greyblue_numbered_15x15_900x900.png"]; 
    self.boardImage = [[UIImageView alloc] initWithImage:image]; 
    self.boardImage.frame = (CGRect){.origin=CGPointMake(0.0f, 0.0f), .size=image.size}; 
    [self.boardScrollView addSubview:self.boardImage]; 

    self.boardImage.userInteractionEnabled = YES; 

    self.boardScrollView.contentSize = image.size; 
    self.boardScrollView.userInteractionEnabled = YES; 
    self.boardScrollView.canCancelContentTouches = NO; 
} 

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
if ([touches count] == 1) { 
    // one finger 

    CGPoint touchPoint = [[touches anyObject] locationInView:self.view]; 

    for (UIImageView *iView in self.view.subviews) { 
     if ([iView isMemberOfClass:[TileImageView class]]) { 
      if (touchPoint.x > iView.frame.origin.x && 
       touchPoint.x < iView.frame.origin.x + iView.frame.size.width && 
       touchPoint.y > iView.frame.origin.y && 
       touchPoint.y < iView.frame.origin.y + iView.frame.size.height) 
      { 
       self.dragObject = iView; 
       self.touchOffset = CGPointMake(touchPoint.x - iView.frame.origin.x, 
               touchPoint.y - iView.frame.origin.y); 
       self.homePosition = CGPointMake(iView.frame.origin.x, 
               iView.frame.origin.y); 
       [self.view bringSubviewToFront:self.dragObject]; 
      } 
     } 
    } 
} 

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    CGPoint touchPoint = [[touches anyObject] locationInView:self.view]; 

    CGRect newDragObjectFrame = CGRectMake(touchPoint.x - touchOffset.x, 
              touchPoint.y - touchOffset.y, 
              self.dragObject.frame.size.width, 
              self.dragObject.frame.size.height); 
    self.dragObject.frame = newDragObjectFrame; 
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    UITouch *touch = [[event allTouches] anyObject]; 
    NSString *tmp = touch.view.description; 

    CGPoint touchPointScreen = [[touches anyObject] locationInView:self.view]; 
    CGPoint touchPointImage = [[touches anyObject] locationInView:self.boardImage]; 
    CGPoint touchPointBoard = [[touches anyObject] locationInView:self.boardScrollView]; 

    if (touchPointScreen.x > self.boardScrollView.frame.origin.x && 
     touchPointScreen.x < self.boardScrollView.frame.origin.x + self.boardScrollView.frame.size.width && 
     touchPointScreen.y > self.boardScrollView.frame.origin.y && 
     touchPointScreen.y < self.boardScrollView.frame.origin.y + self.boardScrollView.frame.size.height) 
     { 
     self.dragObject.frame = CGRectMake(touchPointImage.x - touchOffset.x, 
              touchPointImage.y - touchOffset.y, 
              self.dragObject.frame.size.width, 
              self.dragObject.frame.size.height); 

     [self.boardImage addSubview:self.dragObject]; // add to image 


     } 
} 

代碼： TileImageView.m

@implementation TileImageView: 

- (id)initWithFrame:(CGRect)frame 
{ 
    self = [super initWithFrame:frame]; 
    if (self) { 
     // Initialization code 
     self.exclusiveTouch = YES; 
    } 
    return self; 
} 

Answer 1

您已經有了子類UIImageView，因此您可以在子類中執行以下操作：
1-覆蓋touchsBegan，didEnd和didMove
2-內這些方法將它們傳遞到其是UIScrollView的上海華：[self.superview touchsBegan .... ]
3-如果不的UIImageView接收這些消息，則在初始化添加self.userInteractionEnabled = YES; 希望這正在進行以幫助您