/** 位置管理者 */
@property (nonatomic, strong)CLLocationManager *locationManager;
/** 地图 */
@property (nonatomic, weak) MKMapView *mapView;
/** 点数组 */
@property (nonatomic, strong) NSMutableArray *locArray;
/** 轨迹线 */
@property (nonatomic, strong) MKPolyline *polyLine;
初始化位置管理者
-(CLLocationManager *) locationManager
{
if (_locationManager == nil)
{
_locationManager = [[CLLocationManager alloc] init];
_locationManager.distanceFilter = 5; //5米更新一次
_locationManager.desiredAccuracy = kCLLocationAccuracyBest;
_locationManager.delegate = self;
_locationManager.pausesLocationUpdatesAutomatically = NO;
[_locationManager setActivityType:CLActivityTypeFitness];
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9)
{
_locationManager.allowsBackgroundLocationUpdates = YES;
}
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
{
//使用期间
[_locationManager requestAlwaysAuthorization];
}
}
return _locationManager;
}
** 初始化地图**
JZLocationConverter 转换坐标的类在这里~
- (MKMapView *)mapView{
if (!_mapView) {
MKMapView *mapView = [[MKMapView alloc]initWithFrame:self.view.bounds];
MKCoordinateSpan span;
span.latitudeDelta = 0.005;
span.longitudeDelta = 0.005;//值越小代表地图越精细
MKCoordinateRegion region ;
region.center = [JZLocationConverter wgs84ToGcj02:self.locationManager.location.coordinate];
region.span = span;
//设置显示区域
[mapView setRegion:region];
//跟踪
mapView.userTrackingMode = MKUserTrackingModeFollow;
//显示定位
mapView.showsUserLocation = YES;
mapView.delegate = self;
_mapView = mapView;
}
return _mapView;
}
** 初始化数组**
- (NSMutableArray *)locArray {
if (!_locArray) {
_locArray = [NSMutableArray array];
}
return _locArray;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.view addSubview:self.mapView];
}
** locationManager更新位置Delegate**
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations {
//标准坐标
CLLocation *standLoc = [locations lastObject];
CLLocationCoordinate2D standCoor=standLoc.coordinate;
//中国坐标
CLLocationCoordinate2D chinaCoor = [ JZLocationConverter wgs84ToGcj02:standCoor];
CLLocation *chinaLoc = [[CLLocation alloc]initWithCoordinate:chinaCoor altitude:standLoc.altitude horizontalAccuracy:standLoc.horizontalAccuracy verticalAccuracy:standLoc.verticalAccuracy course:standLoc.course speed:standLoc.speed timestamp:standLoc.timestamp];
//控制精度，精度低的点舍弃
if (standLoc.horizontalAccuracy > 150) {
return;
}
//添加点到数组
[self.locArray addObject:chinaLoc];
//绘制轨迹
[self drawWalkPolyline];
[self.mapView setCenterCoordinate:chinaCoor animated:NO];
}
** 绘制，需要注意的是，这段代码用到了C++语法，所以需要把ViewController.m改成ViewController.mm**
- (void)drawWalkPolyline
{
//轨迹点
NSUInteger count = self.locArray.count;
// 手动分配存储空间，结构体：地理坐标点，用直角地理坐标表示 X：横坐标 Y：纵坐标
MKMapPoint *tempPoints = new MKMapPoint[count];
[self.locArray enumerateObjectsUsingBlock:^(CLLocation *location, NSUInteger idx, BOOL *stop) {
MKMapPoint locationPoint = MKMapPointForCoordinate(location.coordinate);
tempPoints[idx] = locationPoint;
}];
//移除原有的绘图
if (self.polyLine) {
[_mapView removeOverlay:self.polyLine];
}
// 通过points构建BMKPolyline
self.polyLine = [MKPolyline polylineWithPoints:tempPoints count:count];
//添加路线,绘图
if (self.polyLine) {
[_mapView addOverlay:self.polyLine];
}
// 清空 tempPoints 内存
delete []tempPoints;
}
** 所有轨迹缩放到地图可见**
- (void)zoomToMapPoints:(MKMapView*)mapView
{
if(self.locArray .count)
{//保证self.loc.locArray不为空，才执行
CLLocation *firstLoc = self.locArray[0];
CLLocationCoordinate2D location = firstLoc.coordinate;
//放大地图到自身的经纬度位置。
MKCoordinateSpan span ;
// span.latitudeDelta = 0.009 ;
// span.longitudeDelta = 0.009 ;
//根据跑步数据结果来微调地图区域设定
double min_Long = 180;
double max_Long = -180;
double min_Lat = 90;
double max_Lat = -90;
double temp_val = 0;
double deltaLong = 0;
double deltaLat = 0;
for (int j = 0; j<self.locArray .count; j++)
{
CLLocation *loc = self.locArray[j];
CLLocationCoordinate2D tempLoca = loc.coordinate;
temp_val = tempLoca.longitude;
if(temp_val < min_Long) min_Long = temp_val;
if(temp_val > max_Long) max_Long = temp_val;
temp_val = tempLoca.latitude;
if(temp_val > max_Lat) max_Lat = temp_val;
if(temp_val < min_Lat) min_Lat = temp_val;
}
deltaLong = max_Long - min_Long;
deltaLat = max_Lat - min_Lat;
if( deltaLong > deltaLat)
{
span.latitudeDelta = deltaLong /0.5;
span.longitudeDelta = deltaLong /0.5;
}
else
{
span.latitudeDelta = deltaLat /0.5;
span.longitudeDelta = deltaLat /0.5;
}
location.latitude = (3*max_Lat + 7*min_Lat)/10;
location.longitude = (max_Long + min_Long)/2;
MKCoordinateRegion region={location,span};
[_mapView setRegion:region animated:YES];
}
}
