[英]Route-Me framework: RMPath becomes invisible if moving map programly
我使用SampleMap示例在2点之间绘制路径,然后将地图从头到尾移动。 当地图移动时,路径的超出可见区域的部分将变为不可见,直到用户用手指拖动地图。 有人有类似的问题吗? 有什么建议可以解决吗? 这是我用来绘制路径和移动地图的代码:
//Set map view center coordinate
CLLocationCoordinate2D center;
center.latitude = 47.582;
center.longitude = -122.333;
slideLocation = center;
[mapView.contents moveToLatLong:center];
[mapView.contents setZoom:17.0f];
// Add 2 markers(start/end) and RMPath with 2 points
RMMarker *newMarker;
UIImage *startImage = [UIImage imageNamed:@"marker-blue.png"];
UIImage *finishImage = [UIImage imageNamed:@"marker-red.png"];
UIColor* routeColor = [[UIColor alloc] initWithRed:(27.0 /255) green:(88.0 /255) blue:(156.0 /255) alpha:0.75];
RMPath* routePath = [[RMPath alloc] initWithContents:mapView.contents];
[routePath setLineColor:routeColor];
[routePath setFillColor:routeColor];
[routePath setLineWidth:10.0f];
[routePath setDrawingMode:kCGPathStroke];
CLLocationCoordinate2D newLocation;
newLocation.latitude = 47.580;
newLocation.longitude = -122.333;
[routePath addLineToLatLong:newLocation];
newLocation.latitude = 47.599;
newLocation.longitude = -122.333;
[routePath addLineToLatLong:newLocation];
[[mapView.contents overlay] addSublayer:routePath];
newLocation.latitude = 47.580;
newLocation.longitude = -122.333;
newMarker = [[RMMarker alloc] initWithUIImage:startImage anchorPoint:CGPointMake(0.5, 1.0)];
[mapView.contents.markerManager addMarker:newMarker AtLatLong:newLocation];
[newMarker release];
newMarker = nil;
newLocation.latitude = 47.599;
newLocation.longitude = -122.333;
newMarker = [[RMMarker alloc] initWithUIImage:finishImage anchorPoint:CGPointMake(0.5, 1.0)];
[mapView.contents.markerManager addMarker:newMarker AtLatLong:newLocation];
[newMarker release];
newMarker = nil;
作为解决方法,我在每个moveToLatLong上调用moveBy。
[mapView moveToLatLong:slideLocation];
[mapView moveBy:CGSizeMake(0,0)];
它可以工作,但是我不确定是否可以避免此错误的正确方法。
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