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android - Mapbox 未在 Android 模拟器上显示真实位置

问题描述

Mapbox 在我的真实设备（Samsung S8）上显示当前位置没有问题LocationComponent，但是我尝试了多个模拟器（Pixel 2、3、3XL）和 Android Pie/Q，地图总是显示谷歌总部而不是真实位置：

在此处输入图像描述

这是我的代码：

class MapFragment : Fragment(), LocationEngineCallback<LocationEngineResult> {
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        mapView = view.findViewById(R.id.mapView)
        mapView?.onCreate(savedInstanceState)
        mapView?.getMapAsync { mapboxMap ->
        mapbox = mapboxMap
            mapbox.setStyle(Style.MAPBOX_STREETS) {
                style -> showUserLocation(style)
            }
        }

...

@SuppressWarnings("MissingPermission")
private fun showUserLocation(style: Style){
    Log.d(TAG, "showUserLocation")
    if (PermissionsManager.areLocationPermissionsGranted(homeActivity)){
        val locationComponentOptions = LocationComponentOptions.builder(homeActivity)
            .bearingTintColor(Color.WHITE)
            .accuracyAlpha(0.1f)
            .build()

        val locationComponentActivationOptions = LocationComponentActivationOptions
            .builder(homeActivity, style)
            .locationComponentOptions(locationComponentOptions)
            .useDefaultLocationEngine(true)
            .build()

        locationComponent = mapbox.locationComponent
        locationComponent?.activateLocationComponent(locationComponentActivationOptions)
        locationComponent?.isLocationComponentEnabled = true
        locationComponent?.cameraMode = CameraMode.TRACKING
        locationComponent?.renderMode = RenderMode.COMPASS
        createLocationEngine()
        Toast.makeText(homeActivity, "Show location", Toast.LENGTH_LONG).show()
        Log.d(TAG, "Show location")
    } else {
        Toast.makeText(homeActivity, "Permissions not granted", Toast.LENGTH_LONG).show()
    }

}

...

@SuppressWarnings("MissingPermission")
private fun createLocationEngine(){
    locationEngine = LocationEngineProvider.getBestLocationEngine(homeActivity)
    val request = LocationEngineRequest.Builder(LOCATION_INTERVAL)
        .setFastestInterval(LOCATION_INTERVAL)
        .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
        .setMaxWaitTime(MAX_WAIT_TIME)
        .build()
    locationEngine?.getLastLocation(this)

}

片段.xml

<com.mapbox.mapboxsdk.maps.MapView
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    mapbox:mapbox_cameraZoom="@integer/defaultZoom"
    mapbox:mapbox_cameraBearing="34.33"
    mapbox:mapbox_cameraZoomMax="@integer/defaultZoom"
    mapbox:mapbox_cameraZoomMin="@integer/defaultZoom"
    mapbox:mapbox_uiRotateGestures="false"
    mapbox:mapbox_uiTiltGestures="false"
    mapbox:mapbox_uiScrollGestures="false"
    mapbox:mapbox_uiDoubleTapGestures="false" />

知道为什么它在模拟器上不起作用吗？

这是我用过的模拟器：

在此处输入图像描述

标签： androidandroid-studioandroid-emulatormapbox

解决方案

模拟器使用模拟位置。因为它们仅用于开发目的，所以使用模拟位置是有意义的。您可以为模拟器设置任何位置（您的真实位置也是如此）。为此，请点击模拟器控制按钮底部的三点 ( ... )。在打开的窗口中，您可以看到纬度和经度字段。看：

例子

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