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将图像作为子视图添加到另一个图像UIImageView时，我在新图像上添加了一个标记，该图像在编辑时应遵循（移动、放大/缩小、旋转）。

我无法让品牌保持连接到新图像的框架。 它最初在添加图像时连接，但一旦移动，标记就会离开图像框架。

这是我的代码：

 **viewDidLoad:**
 if (!_marque)
 {
    _marque = [[CAShapeLayer layer] retain];
    _marque.fillColor = [[UIColor clearColor] CGColor];
    _marque.strokeColor = [[UIColor cyanColor] CGColor];
    _marque.lineWidth = 1.0f;
    _marque.lineJoin = kCALineJoinRound;
    _marque.lineDashPattern = [NSArray arrayWithObjects:[NSNumber numberWithInt:10],[NSNumber numberWithInt:5], nil];
    _marque.bounds = CGRectMake(_stampedImageView.frame.origin.x, _stampedImageView.frame.origin.y, 0, 0);
    _marque.position = CGPointMake(_stampedImageView.frame.origin.x + self.view.frame.origin.x, _stampedImageView.frame.origin.y + self.view.frame.origin.y);
 }
 [[_stampedImageView layer] addSublayer:_marque];

 **marque Method:**
 if (![_marque actionForKey:@"linePhase"])
 {
    CABasicAnimation *dashAnimation;
    dashAnimation = [CABasicAnimation animationWithKeyPath:@"lineDashPhase"];
    [dashAnimation setFromValue:[NSNumber numberWithFloat:0.0f]];
    [dashAnimation setToValue:[NSNumber numberWithFloat:15.0f]];
    [dashAnimation setDuration:0.5f];
    [dashAnimation setRepeatCount:HUGE_VALF];
    [_marque addAnimation:dashAnimation forKey:@"linePhase"];
 }

_marque.bounds = CGRectMake(_stampedImageView.frame.origin.x, _stampedImageView.frame.origin.y, 0, 0);
_marque.position = CGPointMake(_stampedImageView.frame.origin.x, _stampedImageView.frame.origin.y);

CGMutablePathRef path = CGPathCreateMutable();
CGPathAddRect(path, NULL, frame);
[_marque setPath:path];
CGPathRelease(path);

_marque.hidden = NO;

 **panGestureRecognizer:**
 CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self.view];

if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan)
{
    _firstX = [_stampedImageView center].x;
    _firstY = [_stampedImageView center].y;
}

translatedPoint = CGPointMake(_firstX+translatedPoint.x, _firstY+translatedPoint.y);

[_stampedImageView setCenter:translatedPoint];
[self showOverlayWithFrame:_stampedImageView.frame];

有人可以帮我看看我错过了什么吗？

谢谢！

4

1 回答 1

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我认为您可能在这一行有错误：

CGPathAddRect(path, NULL, frame);

你还没有在我能看到的任何地方定义框架。也许_stampedImageView.frame？

于 2012-08-07T21:18:23.560 回答