Google 地图 API：当我尝试使用地图时，应用程序总是崩溃

Question

所以我目前正在尝试开发一个需要 google 地图 API 的应用程序。每当我尝试加载地图时，应用程序都会将我的地图实现为片段 class:

的子 class

package io.github.danisharsalan.meetupmarker;

import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;


public class MapActivityFragment extends Fragment {

MapView mMapView;
private GoogleMap googleMap;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_map_activity, container, false);

    mMapView = (MapView) rootView.findViewById(R.id.mapView);
    mMapView.onCreate(savedInstanceState);

    mMapView.onResume(); //needed to make map display immediately

    try{
        MapsInitializer.initialize(getActivity().getApplicationContext());
    } catch (Exception e){
        e.printStackTrace();
    }

    mMapView.getMapAsync(new OnMapReadyCallback() {
        @Override
        public void onMapReady(GoogleMap mMap) {
            googleMap = mMap;

            // For showing a move to my location button
            //googleMap.setMyLocationEnabled(true);

            // For dropping a marker at a point on the Map
            LatLng sydney = new LatLng(-34, 151);
            googleMap.addMarker(new MarkerOptions().position(sydney).title("Marker Title").snippet("Marker Description"));

            // For zooming automatically to the location of the marker
            CameraPosition cameraPosition = new CameraPosition.Builder().target(sydney).zoom(12).build();
            googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        }
    });


    return rootView;
}

@Override
public void onResume(){
    super.onResume();
    mMapView.onResume();
}

@Override
public void onPause(){
    super.onPause();
    mMapView.onPause();
}

@Override
public void onDestroy(){
    super.onDestroy();
    mMapView.onDestroy();
}

@Override
public void onLowMemory(){
    super.onLowMemory();
    mMapView.onLowMemory();
}


}'

这是 xml 文件，标题为 fragment_map_activity.xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="io.github.danisharsalan.meetupmarker.MapActivityFragment">

<!-- TODO: Update blank fragment layout -->

<com.google.android.gms.maps.MapView
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

</FrameLayout>

logcat 给我这个问题：

02-25 00:29:10.924 5473-5473/io.github.danisharsalan.meetupmarker E/AndroidRuntime: FATAL EXCEPTION: main Process: io.github.danisharsalan.meetupmarker, PID: 5473 java.lang.RuntimeException: API key not found. Check that is in the element of AndroidManifest.xml at com.google.maps.api.android.lib6.drd.q.b(:com.google.android.gms.DynamiteModulesB@11947480:40) at com.google.maps.api.android.lib6.auth.e.a(:com.google.android.gms.DynamiteModulesB@11947480:11) at com.google.android.gms.maps.internal.CreatorImpl.a(:com.google.android.gms.DynamiteModulesB@11947480:112) at com.google.android.gms.maps.internal.CreatorImpl.newMapViewDelegate(:com.google.android.gms.DynamiteModulesB@11947480:30) at com.google.android.gms.maps.internal.h.onTransact(:com.google.android.gms.DynamiteModulesB@11947480:45) at android.os.Binder.transact(Binder.java:499) at com.google.android.gms.internal.zzeu.zza(Unknown Source) at com.google.android.gms.maps.internal.zzf.zza(Unknown Source) at com.google.android.gms.maps.MapView$zzb.zza(Unknown Source) at com.google.android.gms.dynamic.zza.zza(Unknown Source) at com.google.android.gms.dynamic.zza.onCreate(Unknown Source) at com.google.android.gms.maps.MapView.onCreate(Unknown Source) at io.github.danisharsalan.meetupmarker.MapActivityFragment.onCreateView(MapActivityFragment.java:33) at android.support.v4.app.Fragment.performCreateView(Fragment.java:2354) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1419) at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1740) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1809) at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:799) at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2580) at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2367) at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2322) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2229) at android.support.v4.app.FragmentManagerImpl.run(FragmentManager.java:700) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)

如何解决我的 API 键问题？谢谢。

编辑： 事实证明，我只是在应该引用它的地方遗漏了我的 API 键。很抱歉创建了一个 low-quality 问题

Answer 1

看起来 Google 地图 API 键没有添加到 AndroidManifest 文件中。 您可以从 here

中获取 Google 地图 API 键

按如下方式在结束标记 </application >

之前插入 API 键

 <meta-data
    android:name="com.google.android.geo.API_KEY"
    android:value="YOUR_API_KEY"/>