本工程为基于高德地图iOS SDK进行封装，实现了定位轨迹记录并回放的功能
基于3D地图SDK，可以记录定位点信息并保存，对保存的定位轨迹进行回放。保存的时候会进行轨迹纠偏操作，将定位点抓到道路上。
| 类 | 接口 | 说明 | 版本 |
|---|---|---|---|
| MovingAnnotationView | - (void)addTrackingAnimationForPoints:(NSArray *)points duration:(CFTimeInterval)duration; | 继承自MAAnnotationView，实现了添加动画添加经纬度 | --- |
| MATraceManager | - (NSOperation *)queryProcessedTraceWith:type:processingCallback:finishCallback:failedCallback: | 获取纠偏后的经纬度点集 | v4.3.0 |
Objective-C
/* 定位回调 */
- (void)mapView:(MAMapView *)mapView didUpdateUserLocation:(MAUserLocation *)userLocation updatingLocation:(BOOL)updatingLocation
{
if (!updatingLocation)
{
return;
}
if (!self.isRecording)
{
return;
}
if (userLocation.location.horizontalAccuracy < 100 && userLocation.location.horizontalAccuracy > 0)
{
double lastDis = [userLocation.location distanceFromLocation:self.currentRecord.endLocation];
if (lastDis < 0.0 || lastDis > 10)
{
[self.locationsArray addObject:userLocation.location];
// NSLog(@"date: %@,now :%@",userLocation.location.timestamp, [NSDate date]);
[self.tipView showTip:[NSString stringWithFormat:@"has got %ld locations",self.locationsArray.count]];
[self.currentRecord addLocation:userLocation.location];
if (self.polyline == nil)
{
self.polyline = [MAPolyline polylineWithCoordinates:NULL count:0];
[self.mapView addOverlay:self.polyline];
}
NSUInteger count = 0;
CLLocationCoordinate2D *coordinates = [self coordinatesFromLocationArray:self.locationsArray count:&count];
if (coordinates != NULL)
{
[self.polyline setPolylineWithCoordinates:coordinates count:count];
free(coordinates);
}
[self.mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
// trace
[self.tempTraceLocations addObject:userLocation.location];
if (self.tempTraceLocations.count >= kTempTraceLocationCount)
{
[self queryTraceWithLocations:self.tempTraceLocations withSaving:NO];
[self.tempTraceLocations removeAllObjects];
// 把最后一个再add一遍，否则会有缝隙
[self.tempTraceLocations addObject:userLocation.location];
}
}
}
[self.statusView showStatusWith:userLocation.location];
}
/* 对记录的轨迹进行纠偏. */
- (void)queryTraceWithLocations:(NSArray<CLLocation *> *)locations withSaving:(BOOL)saving
{
NSMutableArray *mArr = [NSMutableArray array];
for(CLLocation *loc in locations)
{
MATraceLocation *tLoc = [[MATraceLocation alloc] init];
tLoc.loc = loc.coordinate;
tLoc.speed = loc.speed * 3.6; //m/s 转 km/h
tLoc.time = [loc.timestamp timeIntervalSince1970] * 1000;
tLoc.angle = loc.course;
[mArr addObject:tLoc];
}
__weak typeof(self) weakSelf = self;
__unused NSOperation *op = [self.traceManager queryProcessedTraceWith:mArr type:-1 processingCallback:nil finishCallback:^(NSArray<MATracePoint *> *points, double distance) {
NSLog(@"trace query done!");
if (saving) {
weakSelf.totalTraceLength = 0.0;
[weakSelf.currentRecord updateTracedLocations:points];
weakSelf.isSaving = NO;
if ([weakSelf saveRoute])
{
[weakSelf.tipView showTip:@"recording save succeeded"];
}
else
{
[weakSelf.tipView showTip:@"recording save failed"];
}
}
[weakSelf updateUserlocationTitleWithDistance:distance];
[weakSelf addFullTrace:points];
} failedCallback:^(int errorCode, NSString *errorDesc) {
NSLog(@"query trace point failed :%@", errorDesc);
if (saving) {
weakSelf.isSaving = NO;
}
}];
}
Swift
func mapView(_ mapView: MAMapView!, didUpdate userLocation: MAUserLocation!, updatingLocation: Bool) {
if !updatingLocation {
return
}
let location: CLLocation? = userLocation.location
if location == nil || !isRecording {
return
}
// filter the result
if userLocation.location.horizontalAccuracy < 100.0 {
let lastDis = userLocation.location.distance(from: self.currentRecord!.endLocation())
if lastDis < 0.0 || lastDis > 10 {
addLocation(location: userLocation.location)
if self.polyline == nil {
self.polyline = MAPolyline.init(coordinates: nil, count: 0)
self.mapView.add(self.polyline!)
}
var coordinates = coordinatesFromLocationArray(locations: self.currentRecord!.locations)
if coordinates != nil {
self.polyline!.setPolylineWithCoordinates(&coordinates!, count: coordinates!.count)
}
self.mapView.setCenter(userLocation.location.coordinate, animated: true)
// trace
self.tempTraceLocations.append(userLocation.location)
if self.tempTraceLocations.count >= kTempTraceLocationCount {
self.queryTrace(withLocations: self.tempTraceLocations, withSaving: false)
self.tempTraceLocations.removeAll()
// 把最后一个再add一遍，否则会有缝隙
self.tempTraceLocations.append(userLocation.location)
}
}
}
var speed = location!.speed
if speed < 0.0 {
speed = 0.0
}
let infoArray: [(String, String)] = [
("coordinate", NSString(format: "<%.4f, %.4f>", location!.coordinate.latitude, location!.coordinate.longitude) as String),
("speed", NSString(format: "%.2fm/s(%.2fkm/h)", speed, speed * 3.6) as String),
("accuracy", "\(location!.horizontalAccuracy)m"),
("altitude", NSString(format: "%.2fm", location!.altitude) as String)]
statusView!.showStatusInfo(info: infoArray)
}
* 对记录的轨迹进行纠偏. */
func queryTrace(withLocations locations: [CLLocation], withSaving saving: Bool) {
var mArr = [MATraceLocation]()
for loc: CLLocation in locations {
let tLoc = MATraceLocation()
tLoc.loc = loc.coordinate
tLoc.speed = loc.speed * 3.6
//m/s 转 km/h
tLoc.time = loc.timestamp.timeIntervalSince1970 * 1000
tLoc.angle = loc.course
mArr.append(tLoc)
}
weak var weakSelf = self
_ = traceManager.queryProcessedTrace(with: mArr, type: AMapCoordinateType(rawValue: UInt.max)!, processingCallback: { (index:Int32, arr:[MATracePoint]?) in
}, finishCallback: { (arr:[MATracePoint]?, distance:Double) in
if saving {
weakSelf?.totalTraceLength = 0.0
weakSelf?.currentRecord?.updateTracedLocations(arr)
weakSelf?.saveRoute()
weakSelf?.isSaving = false
weakSelf?.showTip(tip: "recording save done")
}
weakSelf?.updateUserlocationTitle(withDistance: distance)
weakSelf?.addFullTrace(arr)
}, failedCallback: { (errCode:Int32, errDesc:String?) in
print(errDesc ?? "error")
weakSelf?.isSaving = false
})
}