- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
self.mapView.mapType = MKMapTypeStandard;
self.mapView.scrollEnabled = YES;
// 設置地圖不可旋轉
self.mapView.rotateEnabled = NO;
self.mapView.zoomEnabled = YES;
self.mapView.showsUserLocation = YES;
// 設置地圖中心的經緯度
CLLocationCoordinate2D center = {39.910650,116.47030};
// 設置地圖顯示的範圍,數值越小細節越清楚
MKCoordinateSpan span = {0.01,0.01};
// 二者合一設置顯示區域
MKCoordinateRegion region = {center,span};
[self.mapView setRegion:region animated:YES];
[self.view addSubview:self.mapView];
UILongPressGestureRecognizer *longGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.mapView addGestureRecognizer:longGesture];
// 設置代理
self.mapView.delegate = self;
}
- (void)longPress:(UILongPressGestureRecognizer *)longGesture{
// 獲取長按點得座標
CGPoint postion = [longGesture locationInView:self.mapView];
// 將長按點座標轉換爲經緯度
CLLocationCoordinate2D coord2D = [self.mapView convertPoint:postion toCoordinateFromView:self.mapView];
// 創建一個圓形覆蓋層對象
MKCircle *circle = [MKCircle circleWithCenterCoordinate:coord2D radius:100];
// 將單個的覆蓋層添加到指定的層級
[self.mapView addOverlay:circle level:MKOverlayLevelAboveLabels];
}
// 該方法返回的MKOverlayRenderer負責繪製覆蓋層控件
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay{
MKCircle *circle = (MKCircle *)overlay;
// iOS7之後,推薦使用MKXxxRenderer來負責渲染覆蓋層控件
MKCircleRenderer *circleRend = [[MKCircleRenderer alloc] initWithCircle:circle];
circleRend.alpha = 0.3;
// 填充顏色
circleRend.fillColor = [UIColor blueColor];
// 邊框顏色
circleRend.strokeColor = [UIColor redColor];
return circleRend;
}
/*********iOS7新增的MKTileOverlay覆蓋層*******************************************
- (void)longPress:(UILongPressGestureRecognizer *)longGesture{
// 指定本地圖片覆蓋
NSURL *url = [[NSBundle mainBundle] URLForResource:@"hmt" withExtension:@"png"];
MKTileOverlay *tileOverlay = [[MKTileOverlay alloc] initWithURLTemplate:[url description]];
[self.mapView addOverlay:tileOverlay];
}
// 該方法返回的MKOverlayRenderer負責繪製覆蓋層控件
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay{
MKTileOverlayRenderer *tileRender = [[MKTileOverlayRenderer alloc] initWithOverlay:(MKTileOverlay *)overlay];
tileRender.alpha = 0.2;
return circleRend;
}
*/
位置與地圖(三)給地圖添加覆蓋層
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