UISwipeGesture 无法使用自定义 UIView

Question

这是我的 GameViewController.m 文件：

- (void)viewDidLoad {
    [super viewLoad];
    .
    .
    .
    _board = [[TwinstonesBoardModel alloc] init];
    [_board setToInitialStateMain];
    TwinstonesStoneView* twinstonesBoard = [[TwinstonesStoneView alloc]
                                      initWithMainFrame:CGRectMake(12, 160, 301.5, 302.5)
                                      andBoard:_board];
    [self.view addSubview:twinstonesBoard];

    TwinstonesStonesView *stoneOne = [[TwinstonesStoneView alloc] init];
    TwinstonesStonesView *one = (TwinstonesStoneView*)stoneOne.stoneUnoView;
    TwinstonesStonesView *stoneTwo = [[TwinstonesStoneView alloc] init];
    TwinstonesStonesView *two = (TwinstonesStoneView*)stoneTwo.stoneDueView;

    UISwipeGestureRecognizer* swipeLeft = [[UISwipeGestureRecognizer alloc]
                                         initWithTarget:self
                                         action:@selector(swipeLeft:)];
    swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
    swipeLeft.numberOfTouchesRequired = 1;
    [one addGestureRecognizer:swipeLeft];
    [two addGestureRecognizer:swipeLeft];

这是我的 TwinstonesStoneView.m 文件中的相关代码：

@implementation TwinstonesStoneView
{
    NSMutableArray* _array;
    NSMutableArray* _emptyArray;
    CGRect _frame;
    NSUInteger _column;
    NSUInteger _row;
    TwinstonesBoardModel* _board;

    int _i;
}

- (id)initWithMainFrame:(CGRect)frame andBoard:
                                   (TwinstonesBoardModel*)board
{
  if (Self = [super initWithFrame:frame])
  {
    float rowHeight = 49.0;
    float columnWidth = 49.0;
    float barrierHorizontalRowHeight = 12.5;
    float barrierVerticalColumnWidth = 12.5;

    for (int row = 0; row < 5; row++) 
    {
      for (int col = 0; col < 5; col++)
      {
        TwinstonesStonesView* square = [[TwinstonesStoneView alloc]
             initWithEmptyFrame:CGRectFrame(//spacial equations, not important)
             column:col
             row:row
             board:board];

        BoardCellState state = [board cellStateAtColumn:col andRow:row];

        if (state == BoardCellStateStoneOne) {
            // _stoneUnoView is a public property
            // 'stoneOneCreation' creates a UIImageView of the stone
            _stoneUnoView = [UIImageView stoneOneCreation];
            [self addSubview:square];
            [square addSubview:_stoneUnoView];
            [_array insertObject:_stoneUnoView atIndex:0];
        } else if (state == BoardCellStateStoneTwo) {
            // same idea as above
            _stoneDueView = [UIImageView stoneTwoCreation];
            [self addSubview:square];
            [square addSubview:_stoneDueView];
            [_array insertObject:_stoneDueView atIndex:1];
        } else {
            // based on the 'init' method I write below, I assumed this
            // would return an empty square cell
            [self addSubview:square];
            [_emptyArray insertObject:square atIndex:_i];
            _i++;
        }
      }
    }
    self.backgroundColor = [UIColor clearColor];
  }
  return self;
}

- (UIView*)stoneUnoView {
    return _stoneUnoView;
}

- (UIView*)stoneDueView {
    return _stoneDueView;
}

- (id)initWithEmptyFrame:(CGRect)frame
                  column:(NSUInteger)column
                     row:(NSUInteger)row
                   board:(TwinstonesBoardModel*)board
{
    self = [super initWithFrame:frame];
    return self;
}

- (void)swipeLeft:(UIGestureRecognizer*)recognizer
{
    NSLog(@"Swipe Left");
    UIView* view = recognizer.view;
    [self move:CGPointMake(-1, 0) withView:view];
}

- (void)move:(CGPoint)direction withView:view {
    // whatever code I decide to put for stone movement
}

@end

对于（可能）不必要的长度，我深表歉意，我只是想弄清楚这几天，但没有成功。这是我正在尝试做的事情的要点：

setInititalStateMain 设置两个棋子在 5x5 网格中的位置
在 GameViewController.m 中，我正在尝试捕获 'stoneUnoView' 和 'stoneDueView' 属性（在 TwinstonesStoneView.m 文件中设置），为它们提供滑动手势，并进行交互与他们一起使用 TwinstonesStoneView.m 中提供的方法。
我是否产生了过多的观看次数？要注意的是，当我运行程序时，一切都按照我在 IPhone 上看到的内容进行。石头出现在我的屏幕上，但当我尝试与它们互动时，控制台中甚至没有显示 'NSLog' 消息。
'stoneOneCreation' 方法（和...两个）是 UIImageView 的，但是，如您所见，我将它们存储在 UIView 指针中。
我还使用了“[一个setUserInteractionEnabled:YES]”（和...两个），但这也没有帮助。
如果我将手势识别器添加到 self.view，一切正常（石头、游戏板和其他图形的显示出现，当我与屏幕的任何部分交互时，我将指示输出到控制台……只是不是特定于石头的交互）。

非常感谢您忍受这一切，如果有人知道出了什么问题，这将非常有帮助。 PS: 所有文件 #import 都是正确的，所以这不是问题。

我正在使用 XCode 7，Objective-C 语言，并为 iOS

开发

Anthony

Answer 1

您应该将不同的滑动手势识别器实例添加到不同的 UIView 实例。

UISwipeGestureRecognizer* swipeLeft1 = [[UISwipeGestureRecognizer alloc]
                                     initWithTarget:self
                                     action:@selector(swipeLeft:)];
swipeLeft1.direction = UISwipeGestureRecognizerDirectionLeft;
swipeLeft1.numberOfTouchesRequired = 1;
[one addGestureRecognizer:swipeLeft1];

 UISwipeGestureRecognizer* swipeLeft2 = [[UISwipeGestureRecognizer alloc]
                                     initWithTarget:self
                                     action:@selector(swipeLeft:)];
swipeLeft2.direction = UISwipeGestureRecognizerDirectionLeft;
swipeLeft2.numberOfTouchesRequired = 1;
[two addGestureRecognizer:swipeLeft2];

我认为这是因为手势识别器只读 view 属性.

Answer 2

您好，可能是该视图禁用了用户交互，手势仅适用于具有 userInteractionEnable = YES 的视图。

UISwipeGesture 无法使用自定义 UIView

UISwipeGesture Not working using custom UIView

xcode

objective-c

ios

uiswipegesturerecognizer