Android Maps v2 使用指南针旋转 mapView [英] Android Maps v2 rotate mapView with compass

问题描述

我正在开发一个需要使用指南针旋转 mapView 的应用程序.我知道如何旋转相机，但我需要用罗盘旋转 mapView.中心点应该是当前位置.我找到了 Maps V1 的代码，但我需要用 Maps V2 来做

I'm developing an app which needs to rotate the mapView with a compass. I know how to rotate the camera but I need to rotate the mapView with the compass. the center point should be the current location. I found codes for Maps V1 but I need to do it with Maps V2

推荐答案

好的，我自己想出来了.首先，您需要从罗盘计算方位.然后可以旋转 Maps api-2 相机.

OK, i figured it out myself. first you need to calculate the bearing from the compass. then the Maps api-2 camera can be rotated.

public void updateCamera(float bearing) {
            CameraPosition currentPlace = new CameraPosition.Builder()
                    .target(new LatLng(centerLatitude, centerLongitude))
                    .bearing(bearing).tilt(65.5f).zoom(18f).build();
            googleMap.moveCamera(CameraUpdateFactory.newCameraPosition(currentPlace));

    }

在您的代码中设置 SensorListener 并在 onSensorChanged 事件中调用此方法.我添加了一个倾斜值，因此地图将在 3D 中旋转.

set SensorListener in your code and call this method in onSensorChanged event. i have added a tilt value so the map will rotate in 3D.

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