如何区分点击和拖动

Question

我正在创建一个应用程序，我正在尝试制作它，以便我可以在屏幕上拖动一个精灵（顶部有第二个精灵），但如果我只是点击精灵，则应该调用其他方法。

当我触摸精灵的边缘时，拖动工作正常，但是当我尝试从精灵的中间（第二个精灵位于顶部）拖动时，拖动根本不起作用，但点击被调用。

我知道为什么不这样做，不过，两个精灵的触碰是相互冲突的，因为上面的那个在触碰下面的第二个之前就吞噬了触碰。

如果手指移动，我希望精灵拖动，但我希望仅在轻击时注册轻击（即手指在屏幕上没有移动），我该如何实现这一点？

我正在使用的精灵的视觉效果（如果有帮助的话）：

黄色符文是与其下面的石头分开的精灵（因为涉及动画）。

--------Touch for the top sprite----------
-(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent *)event{
    lastTouchLocation = [RuneScene locationFromTouch:touch];
    BOOL isTouchHandled = CGRectContainsPoint([charSprite boundingBox], lastTouchLocation);

    return isTouchHandled;
}
-(void) ccTouchEnded:(UITouch*)touch withEvent:(UIEvent *)event{
    NSLog(@"Tap received!");

}

------Touch for the bottom sprite--------

-(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent *)event{
    lastTouchLocation = [RuneScene locationFromTouch:touch];
    BOOL isTouchHandled = NO;

    // Check if this touch is on the Spider's sprite.
    if (CGRectContainsPoint([current.runeSprite boundingBox], lastTouchLocation)){
        mover = current;
        isTouchHandled = YES;
    }
    else if(CGRectContainsPoint([rune1.runeSprite boundingBox], lastTouchLocation)){
        mover = rune1;
        isTouchHandled = YES;
    }
    else if(CGRectContainsPoint([rune2.runeSprite boundingBox], lastTouchLocation)){
        mover = rune2;
        isTouchHandled = YES;
    }else if(CGRectContainsPoint([rune3.runeSprite boundingBox], lastTouchLocation)){
        mover = rune3;
        isTouchHandled = YES;
    }else if(CGRectContainsPoint([rune4.runeSprite boundingBox], lastTouchLocation)){
        mover = rune4;
        isTouchHandled = YES;
    }else if(CGRectContainsPoint([rune5.runeSprite boundingBox], lastTouchLocation)){
        mover = rune5;
        isTouchHandled = YES;
    }else if(CGRectContainsPoint([rune6.runeSprite boundingBox], lastTouchLocation)){
        mover = rune6;
        isTouchHandled = YES;
    }else if(CGRectContainsPoint([rune7.runeSprite boundingBox], lastTouchLocation)){
        mover = rune7;
        isTouchHandled = YES;
    }else if(CGRectContainsPoint([rune0.runeSprite boundingBox], lastTouchLocation)){
        mover = rune0;
        isTouchHandled = YES;
    }

    // Stop the move action so it doesn't interfere with the user's scrolling.
    //[self stopActionByTag:ActionTagCastingLayerMovesBack];

    // Always swallow touches, GameLayer is the last layer to receive touches.
    return isTouchHandled;

}

-(void) ccTouchMoved:(UITouch*)touch withEvent:(UIEvent *)event{
    CGPoint currentTouchLocation = [RuneScene locationFromTouch:touch]; 

    // Take the difference of the current to the last touch location.
    CGPoint moveTo = ccpSub(lastTouchLocation, currentTouchLocation);

    // Then reverse it since the goal is not to give the impression of moving the camera over the background, 
    // but to touch and move the background.
    moveTo = ccpMult(moveTo, -1);

    lastTouchLocation = currentTouchLocation;

    [self moveActionWithLocation: moveTo];
}

-(void) ccTouchEnded:(UITouch*)touch withEvent:(UIEvent *)event{
    if (!current.isPlaced && mover == current && currentR < Rune6) {
        // Move the game layer back to its designated position.
        CCMoveTo* move = [CCMoveTo actionWithDuration:1 position:curPt];
        CCEaseIn* ease = [CCEaseIn actionWithAction:move rate:0.5f];
        //ease.tag = ActionTagCastingLayerMovesBack;
        [current.runeSprite runAction:ease];

        [current setIsPlaced:YES];
        current.charSprite = [characters objectAtIndex:currentR];
        current.charSprite.position = curPt;
        //charSprite.visible = YES;
        [current performSelector:@selector(fade:) withObject:current.charSprite afterDelay:1];
        [current reorderChild:current.charSprite z:10];

        [self updateCurrentRune:currentR];
        [self updateCurrentCastNum:currentP];
        [self reorderChild:current z:10];
    }
}

我尝试研究 UITapGestureRecognizer，但我所做的一切尝试都不起作用。我的图层/精灵不允许我将它们添加为手势。我还阅读了有关 CCGrstureRecognizer 的内容或 cocos2d 论坛上的内容，但我找不到该类的任何文档，也无法找到如何实际使用它...

这里有人知道如何帮助我解决问题吗？问题？

Answer 1

而不是使用（如果 CGRectContainsPoint）尝试使用视图的 pointInside:withEvent: 返回 NO。这将导致系统表现得好像您的视图根本不存在一样。