错误水平

Question

我创建为iPad一个谜引擎（iOS版SDK 4.2）

我有控制一个UIView（rootView）保持较小的UIView（puzzleView）和十二拼图一个PuzzleViewController （PuzzlePieceView类扩展UIImageView）。

理念很简单。 puzzlePieces围绕着puzzleView并被挑选并拖动到puzzleView。当挑选这些作品时，他们会将它们放大一倍，并将其放在中心位置以放置手指触摸的位置。 当它们被放置在正确的位置时，它们将保持放置（它们从rootView中移除并作为子视图添加到puzzleView中），如果它们落在错误的位置，它们会返回到原始位置和大小。

目前我最重要的触摸开始/移动/结束/取消在PuzzlePieceView类，使每个智力玩具控制自己的动作。

这里就是他们做的

#pragma mark UIResponder overriding 

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    NSLog(@"PuzzlePiece touchesBegan"); 
    if (!isDeployed) { 
     if (self.initialSize.width == 0 || self.initialSize.height ==0) { //if there is still no initial size 
      self.initialSize = self.frame.size; 
     } 
     NSLog(@"self.initialLocation.x %f %f", self.initialLocation.x, self.initialLocation.y); 
     if (self.initialLocation.x == 0. || self.initialLocation.y == 0.) { //if there is still no initial location 
      self.initialLocation = self.center; //record the initial location 
     } 
     UITouch *touch = [[event allTouches] anyObject]; 
     self.center = [touch locationInView:self.superview]; //set the center of the view as the point where the finger touched it 
     [self.superview bringSubviewToFront:self]; //the piece brings itself as frontMostView so that it is always visible and never behind any other piece while moving 
    } 
} 

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { 
    NSLog(@"PuzzlePiece touchesMoved"); 
    if (self.frame.size.width == self.initialSize.width) { 
     self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, self.image.size.width, self.image.size.height); 
    } 
    if (!isDeployed) { 
     UITouch *touch = [[event allTouches] anyObject]; 
     self.center = [touch locationInView:self.superview]; //set the center of the view as the point where the finger moved to 
    } 
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 
    NSLog(@"PuzzlePiece touchesEnded"); 
    if (!isDeployed) { 
     UITouch *touch = [[event allTouches] anyObject]; 
     NSLog(@"point %@ x%f y%f", self.puzzleView, [touch locationInView:self.puzzleView].x, [touch locationInView:self.puzzleView].y); 
     if (CGRectContainsPoint(self.dropZone,[touch locationInView:self.puzzleView])) { 
      [self removeFromSuperview]; 
      [self.puzzleViewController addPiece:self]; 
      self.center = self.finalCenter; 
      self.isDeployed = YES; 
     } 
     else { 
      [self restoreToInitialSize]; 
      [self restoreToInitialPosition]; 
     } 
    } 

} 

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event { 
    NSLog(@"PuzzlePiece touchesCancelled"); 
    if (!isDeployed) { 
     [self restoreToInitialSize]; 
     [self restoreToInitialPosition]; 
    } 
} 

#pragma mark - 

似乎很容易，它是。

我只剩下一个bug了。 当我试图制作一个横向移动任何puzzlePiece触摸得到取消。 这只发生在移动以快速方式开始时。如果我接触这件作品并等待片刻（大约一秒钟），那么这些作品就会完美地移动。 这些碎片也在垂直方向上完美移动。

我试着不改变puzzlePiece大小视图时第一次接触卜错误依然存在，

Answer 1

我找到了解决这个。 我的一个队友在RootView中注册了UISwipeGestureRecognizer，而不是特定的子视图，应该识别swipeGesture。