拖动 UIButton 时移动拖动手柄

Question

我有一个视图，它具有响应拖动事件的 UIButtons。一切正常，问题是按钮只有 70X70，并且在拖动时，按钮的图像在很大程度上被手指覆盖（过程是用户将图像（UIButton）拖动到视图上的目标区域） .有没有办法偏移拖动手柄，使其不是 UIButton 的中心点？理想情况下，我希望它位于 UIbutton 图像的右上角，因为左下角是我最关心用户看到的区域。

编辑：这是我用来处理触摸（拖动）事件的代码：

- (IBAction) imageTouch:(id) sender withEvent:(UIEvent *) event
{
    UIButton *thisButton = (UIButton *)sender;

    CGPoint centerPoint = [[[event allTouches] anyObject] locationInView:self.view];
    UIControl *control = sender;
    control.center = centerPoint;

    UIColor *selColor = [WebImageOperations getColorFromImage:self.targetImageView.image atX:point.x andY:point.y];

    NSInteger thisScore = [Scoring scoreFromUIColor:selColor withArrow:thisButton.tag];

    switch (thisButton.tag) {
        case 10:
            arrow10Score = thisScore;
            self.score10Label.text = [NSString stringWithFormat:@"%d", arrow10Score];
            break;
        case 12:
            arrow12Score = thisScore;
            self.score12Label.text = [NSString stringWithFormat:@"%d", arrow12Score];
            break;
        case 14:
            arrow14Score = thisScore;
            self.score14Label.text = [NSString stringWithFormat:@"%d", arrow14Score];
            break;

        default:
            break;
    }

    NSInteger totalScore = arrow10Score + arrow12Score + arrow14Score;
    self.totalScoreLabel.text = [NSString stringWithFormat:@"%d", totalScore];
}

Answer 1

我认为这是不可能的。如果有人遇到此问题并有解决方案，请在此处发布，我会将该答案标记为正确答案。