我必须创建自定义MKMapView
注释,它们与iOS提供的注释几乎相同,但颜色(白色)和形状略有不同。
我的第一次尝试是阻止打开原始的黑色UIAnnotationView
,并在AnnotationView
setSelected:animated:
为同一个UIAnnotationView
添加了新的子视图。将此视图添加到superview后,我已将其设置为动画。这只有一个问题:注释中的自定义按钮无法点击。
在此之后我发现了这个很好的例子:
https://github.com/tochi/custom-callout-sample-for-iOS
当用户点击CalloutAnnotation
时,会向地图添加新的PinAnnotation
。 PinAnnotation
没有AnnotationView
s,只有CalloutAnnotation
s。
这很好用,除了在创建注释视图时我无法弄清楚如何在注释视图上执行类似iOS的初始缩放动画。
我想要使用的动画如下(在SO上找到并且在我第一次尝试时工作正常):
- (void)animateCalloutAppearance:(CalloutAnnotationView *)annotaitonView
{
self.endFrame = annotaitonView.frame;
CGFloat scale = 0.001f;
annotaitonView.transform = CGAffineTransformMake(scale, 0.0f, 0.0f, scale, [self xTransformForScale:scale andAnnotation:annotaitonView], [self yTransformForScale:scale]);
[UIView animateWithDuration:0.075f delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
CGFloat scale = 1.2f;
annotaitonView.transform = CGAffineTransformMake(scale, 0.0f, 0.0f, scale, [self xTransformForScale:scale andAnnotation:annotaitonView], [self yTransformForScale:scale]);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
CGFloat scale = 0.90;
annotaitonView.transform = CGAffineTransformMake(scale, 0.0f, 0.0f, scale, [self xTransformForScale:scale andAnnotation:annotaitonView], [self yTransformForScale:scale]);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.075 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
CGFloat scale = 1.0;
annotaitonView.transform = CGAffineTransformMake(scale, 0.0f, 0.0f, scale, [self xTransformForScale:scale andAnnotation:annotaitonView], [self yTransformForScale:scale]);
} completion:nil];
}];
}];
}
#pragma mark - The helper methods
- (CGFloat)relativeParentXPosition:(CalloutAnnotationView *)annotationView {
return annotationView.bounds.size.width / 2.0f;
}
- (CGFloat)xTransformForScale:(CGFloat)scale andAnnotation:(CalloutAnnotationView *)annotationView {
CGFloat xDistanceFromCenterToParent = self.endFrame.size.width / 2.0f - [self relativeParentXPosition:annotationView];
CGFloat transformX = (xDistanceFromCenterToParent * scale) - xDistanceFromCenterToParent;
return transformX;
}
- (CGFloat)yTransformForScale:(CGFloat)scale {
CGFloat yDistanceFromCenterToParent = self.endFrame.size.height / 2.0f;
CGFloat transformY = yDistanceFromCenterToParent - yDistanceFromCenterToParent * scale;
return transformY;
}
答案 0 :(得分:2)
我在这个博客上找到了答案:http://blog.asynchrony.com/2010/09/building-custom-map-annotation-callouts-part-1/
棘手的部分是你必须在CalloutAnnotationView
的{{1}}中做动画:)
didMoveToSuperView
我希望它可以帮助其他人:)