ios Google Map - 如何在不缩放到相机的情况下获取我的设备位置答案

【问题标题】：ios Google Map - how to get my device location without zooming to the cameraios Google Map - 如何在不缩放到相机的情况下获取我的设备位置
【发布时间】：2015-11-07 04:20:03
【问题描述】：

我正在制作按钮以定期获取我的位置。在实现方面，即使不使用 GMSCameraUpdate 对焦，该设备也会让谷歌地图相机定期成为地图的中心。您能告诉我要增强什么，以便我们可以定期获取更新的设备位置，而无需缩放相机吗？

以下是我在 onClick 后触发缩放的工作

 if(self.myMapView.myLocation !=nil){
        [self.locationManager stopUpdatingLocation];
        [CATransaction begin];
        [CATransaction setAnimationDuration:0.2];
        GMSCameraUpdate *move = [GMSCameraUpdate setTarget:self.myMapView.myLocation.coordinate  zoom:self.myMapView.camera.zoom];
        [self.myMapView animateWithCameraUpdate:move];
        [CATransaction commit];
    }

获取位置后委托

- (void)locationManager:(CLLocationManager *)manager
     didUpdateLocations:(NSArray *)locations{
    CLLocation *location = [locations lastObject];


    if(location==nil){
        location = self.myMapView.myLocation;
    }

    myDeviceLocation = location;

    NSLog(@"adasdads zoom ");
    if (markera == nil) {
        markera = [[GMSMarker alloc] init] ;
        markera.position   = CLLocationCoordinate2DMake(22.2855200, 114.1576900);
        markera.groundAnchor = CGPointMake(0.5f, 0.97f); // Taking into account walker's shadow

        markera.map = self.myMapView;


    }else {
        [CATransaction begin];
        [CATransaction setAnimationDuration:2.0];
        markera.position = location.coordinate;
        markera.icon = nil;
        [CATransaction commit];

    }

    GMSCameraUpdate *move = [GMSCameraUpdate setTarget:location.coordinate zoom:17];
    [self.myMapView animateWithCameraUpdate:move];
}



-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)statusX {

    NSLog(@"status  : %d" , statusX);
    if (status == kCLAuthorizationStatusDenied) {
        //location denied, handle accordingly
        NSLog(@"denied ");

    }
else if (statusX == kCLAuthorizationStatusAuthorized) {
    //hooray! begin startTracking
    NSLog(@"proceed ");
    dispatch_async(dispatch_get_main_queue(), ^{
        self.myMapView.myLocationEnabled = YES;
    });



}else   if (statusX == kCLAuthorizationStatusAuthorizedAlways || statusX == kCLAuthorizationStatusAuthorizedWhenInUse) {
    self.myMapView.myLocationEnabled = YES;

    NSLog(@"gogogo ");
    dispatch_async(dispatch_get_main_queue(), ^{
      //  self.myMapView.myLocationEnabled = YES;
    });

【问题讨论】：

从didUpdateLocations 中删除更改地图视图相机的代码？
现已移除，但在调用 startUpdateLocation 时，相机仍对焦

标签： ios google-maps cllocationmanager

【解决方案1】：

你可以试试这个

从您的 didUpdateLocations 委托中删除此代码：

GMSCameraUpdate *move = [GMSCameraUpdate setTarget:location.coordinate zoom:17];
[self.myMapView animateWithCameraUpdate:move];

将其移至您可以稍后调用的新函数。

在didUpdateLocations中设置你的新用户位置，然后调用[locationManager stopUpdatingLocation]，然后调用你的新自定义函数来设置摄像头。

在您的新自定义函数中，更改：

[self.myMapView animateWithCameraUpdate:move];

收件人：

CLLocationCoordinate2D target = myLocation;  //2d coord
self.myMapView.camera = [GMSCameraPosition cameraWithTarget:target zoom:17];

【讨论】：