Question

我希望在我的应用程序中使整个地图变暗，除了小的选择＆＃34;正常显示的部分。

要在 Google Maps API for Android 中执行此功能，我创建了一个多边形，并且我调用了setHoles函数：

List points = Arrays.asList(new LatLng(-90 + delta, -180 + delta),
                new LatLng(-90 + delta, 0),
                new LatLng(-90 + delta, 180 - delta),
                new LatLng(0, 180 - delta),
                new LatLng(90 - delta, 180 - delta),
                new LatLng(90 - delta, 0),
                new LatLng(90 - delta, -180 + delta),
                new LatLng(0, -180 + delta));
defaultZone = map.addPolygon(new PolygonOptions().addAll(points));
defaultZone.setFillColor(0x99000000);

defaultZone.setHoles(Arrays.asList(pointsLatLong));

这对于 Android 非常有用，我想在 iOS 应用程序中重现相同的效果，但GMSPolygon类没有{{1}函数，我无法弄清楚如何在多边形中创建孔（我试图在地图上绘制暗多边形，然后绘制＆＃34;选择＆＃34;区域，上面有透明颜色但它吸食了鼻涕。）

有人能帮助我吗？一个功能可以在 Android 中完成，而不是在 iOS 中使用相同的框架

，这似乎很奇怪

Answer 1

这是iOS SDK的已知限制。正在跟踪请求：

https://code.google.com/p/gmaps-api-issues/issues/detail?id=5464

投票吧！

Answer 2

这是一个众所周知的请求，谷歌将最有可能在下一个iOS地图SDK发布中包含。

在此链接上发表评论https://code.google.com/p/gmaps-api-issues/issues/detail?id=5464

Answer 3

迅速

override func loadView() {
  let hydeParkLocation = CLLocationCoordinate2D(latitude: -33.87344, longitude: 151.21135)
  let camera = GMSCameraPosition.camera(withTarget: hydeParkLocation, zoom: 16)
  let mapView = GMSMapView.map(withFrame: .zero, camera: camera)
  mapView.animate(to: camera)

  let hydePark = "tpwmEkd|y[QVe@Pk@BsHe@mGc@iNaAKMaBIYIq@qAMo@Eo@@[Fe@DoALu@HUb@c@XUZS^ELGxOhAd@@ZB`@J^BhFRlBN\\BZ@`AFrATAJAR?rAE\\C~BIpD"
  let archibaldFountain = "tlvmEqq|y[NNCXSJQOB[TI"
  let reflectionPool = "bewmEwk|y[Dm@zAPEj@{AO"

  let polygon = GMSPolygon()
  polygon.path = GMSPath(fromEncodedPath: hydePark)
  polygon.holes = [GMSPath(fromEncodedPath: archibaldFountain)!, GMSPath(fromEncodedPath: reflectionPool)!]
  polygon.fillColor = UIColor(colorLiteralRed: 1.0, green: 0.0, blue: 0.0, alpha: 0.2)
  polygon.strokeColor = UIColor(colorLiteralRed: 1.0, green: 0.0, blue: 0.0, alpha: 1.0)
  polygon.strokeWidth = 2
  polygon.map = mapView
  view = mapView
}

目标c

- (void)loadView {
  CLLocationCoordinate2D hydeParkLocation = CLLocationCoordinate2DMake(-33.87344, 151.21135);
  GMSCameraPosition *camera = [GMSCameraPosition cameraWithTarget:hydeParkLocation
                                                             zoom:16];
  _mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];

  NSString *hydePark = @"tpwmEkd|y[QVe@Pk@BsHe@mGc@iNaAKMaBIYIq@qAMo@Eo@@[Fe@DoALu@HUb@c@XUZS^ELGxOhAd@@ZB`@J^BhFRlBN\\BZ@`AFrATAJAR?rAE\\C~BIpD";
  NSString *archibaldFountain = @"tlvmEqq|y[NNCXSJQOB[TI";
  NSString *reflectionPool = @"bewmEwk|y[Dm@zAPEj@{AO";

  GMSPolygon *polygon = [[GMSPolygon alloc] init];
  polygon.path = [GMSPath pathFromEncodedPath:hydePark];
  polygon.holes = @[[GMSPath pathFromEncodedPath:archibaldFountain],
                    [GMSPath pathFromEncodedPath:reflectionPool]];
  polygon.fillColor = [UIColor colorWithRed:1.0 green:0.0 blue:0.0 alpha:0.2];
  polygon.strokeColor = [UIColor colorWithRed:1.0 green:0.0 blue:0.0 alpha:1.0];
  polygon.strokeWidth = 2;
  polygon.map = _mapView;
  self.view = _mapView;
}

reference

使用谷歌地图为ios添加多边形孔

3 个答案: