Question

我想移动一个按钮，这是我的代码。我甚至没有得到＆＃34; fires1＆＃34;当我尝试移动按钮时输出。它只是受到压力而且不会移动。我一直在搜索，我总是得到相同的答案，我已经将其应用到我的代码中。

任何人都知道为什么我的按钮不会移动？

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];
    [self.nextResponder touchesBegan:touches withEvent:event];
    NSLog(@"%@",@"fires1");
    if ([touches count] == 1) {
        // one finger
        CGPoint touchPoint = [[touches anyObject] locationInView:self.view];
        for (UIButton *iView in self.letterButtons) {
           // if ([iView isMemberOfClass:[UIButton 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];
                    NSLog(@"%@",@"works!");

                }
            //}
        }
    }
}

- (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
{
    CGPoint touchPoint = [[touches anyObject] locationInView:self.view];
    if (touchPoint.x > self.dropTarget.frame.origin.x &&
        touchPoint.x < self.dropTarget.frame.origin.x + self.dropTarget.frame.size.width &&
        touchPoint.y > self.dropTarget.frame.origin.y &&
        touchPoint.y < self.dropTarget.frame.origin.y + self.dropTarget.frame.size.height )
    {
       // self.dropTarget.currentTitle = self.dragObject.currentTitle;

    }
    self.dragObject.frame = CGRectMake(self.homePosition.x, self.homePosition.y,
                                       self.dragObject.frame.size.width,
                                       self.dragObject.frame.size.height);
}

Answer 1

如果你正在使用UIButton，我不明白你为什么要开始实施接触？删除触摸开始方法并将TouchDown事件上的所有按钮链接到此IBAction

-(IBAction)buttonPressed:(id)sender
{

  self.dragObject = (UIButton*)sender;
  self.homePosition = CGPointMake(sender.frame.origin.x,
                                                sender.frame.origin.y);
  [self.view bringSubviewToFront:self.dragObject];

}

调整你的touceshMoved方法，如

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
    {
     UITouch *touch = [touches anyObject];
     CGPoint currentPoint = [touch locationInView:self.view];
     self.dragObject.center = currentPoint;
    }

让你的touchesEnded方法看起来像这样

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
 BOOL btnAIntersectsWithBtnB = CGRectIntersectsRect(self.dragTarget.frame,self.dropObject.frame);
 if(btnAIntersectsWithBtnB)
 {
   self.dropTarget.currentTitle = self.dragObject.currentTitle;
 }
 self.dragObject.frame = CGRectMake(self.homePosition.x, self.homePosition.y,
                                       self.dragObject.frame.size.width,
                                       self.dragObject.frame.size.height);
}

无法使用touchesbegan移动Xcode UIButton

1 个答案: