android - 谷歌地图未显示在底部导航 Activity fragment 中(kotlin)

Question

我只看到带有 google Logo 的灰色、空的、空白的窗口

1. Activity fragment 映射

   <?xml version="1.0" encoding="utf-8"?>
   <androidx.constraintlayout.widget.ConstraintLayout
       xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto"
       android:layout_width="match_parent"
       android:layout_height="match_parent">
   
       <fragment
           android:id="@+id/map"
           android:name="com.google.android.gms.maps.SupportMapFragment"
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           />
   
   </androidx.constraintlayout.widget.ConstraintLayout>
   

2. MapFragment 类

   class MapFragment : Fragment(), OnMapReadyCallback{
   
   private lateinit var mMap: GoogleMap
   

在onCreateView中

    // Inflate the layout for this fragment
    var rootView = inflater.inflate(R.layout.fragment_map, container, false)

    var mapFragment = getChildFragmentManager().findFragmentById(R.id.map) as SupportMapFragment
    mapFragment?.getMapAsync(this)

    return rootView

还有更多代码

override fun onMapReady(googleMap: GoogleMap) {
    mMap = googleMap

    // Add a marker in Sydney and move the camera
    val sydney = LatLng(-34.0, 151.0)
    mMap.addMarker(MarkerOptions().position(sydney).title("Marker in Sydney"))
    mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney))
}

1. 启用 SDK，添加 API key 并在 Google API 中配置 SHA1

2. 安卓 list

   <?xml version="1.0" encoding="utf-8"?>
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:dist="http://schemas.android.com/apk/distribution"
       package="com.domain.name">
   
       <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
   
       <dist:module dist:instant="true" />
   
       <application
           android:allowBackup="true"
           android:icon="@mipmap/ic_launcher"
           android:label="@string/app_name"
           android:roundIcon="@mipmap/ic_launcher_round"
           android:supportsRtl="true"
           android:theme="@style/AppTheme">
   
           <meta-data
               android:name="com.google.android.gms.version"
               android:value="@integer/google_play_services_version" />
   
           <meta-data
               android:name="com.google.android.geo.API_KEY"
               android:value="@string/google_maps_api_key"/>
   
           <activity
               android:name=".MainActivity"
               android:label="@string/app_name">
               <intent-filter>
                   <action android:name="android.intent.action.MAIN" />
   
                   <category android:name="android.intent.category.LAUNCHER" />
               </intent-filter>
           </activity>
       </application>
   </manifest>
   

3. 在 Strings.xml 中

       <string name="google_maps_api_key">AIz....2Y</string>
   

在Google Map Activity project/application map created key 工作正常

Answer 1

您必须在 AndroidManifest.xml 中添加 API key 以启用必要的 API

<meta-data
    android:name="com.google.android.geo.API_KEY"
    android:value="PASTE-YOUR-API-KEY-HERE" />

Check this获取API KEY