錯誤水平

Question

我創建爲iPad一個謎引擎（iOS版SDK 4.2）

我有控制一個UIView（rootView）保持較小的UIView（puzzleView）和十二拼圖一個PuzzleViewController （PuzzlePieceView類擴展UIImageView）。

理念很簡單。 puzzlePieces圍繞着puzzleView並被挑選並拖動到puzzleView。當挑選這些作品時，他們會將它們放大一倍，並將其放在中心位置以放置手指觸摸的位置。 當它們被放置在正確的位置時，它們將保持放置（它們從rootView中移除並作爲子視圖添加到puzzleView中），如果它們落在錯誤的位置，它們會返回到原始位置和大小。

目前我最重要的觸摸開始/移動/結束/取消在PuzzlePieceView類，使每個智力玩具控制自己的動作。

這裏就是他們做的

#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。

我只剩下一個bug了。 當我試圖製作一個橫向移動任何puzzlePiece觸摸得到取消。 這隻發生在移動以快速方式開始時。如果我接觸這件作品並等待片刻（大約一秒鐘），那麼這些作品就會完美地移動。 這些碎片也在垂直方向上完美移動。

我試着不改變puzzlePiece大小視圖時第一次接觸卜錯誤依然存在，

Answer 1

我找到了解決這個。 我的一個隊友在RootView中註冊了UISwipeGestureRecognizer，而不是特定的子視圖，應該識別swipeGesture。