android - 谷歌地图在 map 上不显示任何东西

Question

我正在显示 Activity 中的 map ......但是当我在设备上运行应用程序时它没有显示任何东西，它只显示白色屏幕和放大缩小选项......MAP 键是正确的......谢谢......

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.edxample.finalmap"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />



     <permission android:name="com.edxample.finalmap.permission.MAPS_RECEIVE"
         android:protectionLevel="signature" />
     <uses-permission android:name="com.edxample.finalmap.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <uses-feature android:glEsVersion="0x00020000"
        android:required="true" />




    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.edxample.finalmap.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>

        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="AIzaSyBL8ANi3jKkM0tF65C_Qus2_JgWRzClhfU" />

    </application>

</manifest>

activity_main.xml

<RelativeLayout 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=".MainActivity" >

     <fragment
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        xmlns:map="http://schemas.andoid.com/apk/es-auto"
        android:name="com.google.android.gms.maps.SupportMapFragment" />


</RelativeLayout>

主要 Activity

package com.edxample.finalmap;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends FragmentActivity  {

    private GoogleMap googleMap;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if(check()) 
        {
            setContentView(R.layout.activity_main);
            Toast.makeText(this, "In Google play service.", Toast.LENGTH_LONG).show();
            initFun();
        }
        else
        {
            Toast.makeText(this, "Google play service not available.", Toast.LENGTH_LONG).show();
        }
    }


    private Boolean check()
    {
        int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
        if(status==ConnectionResult.SUCCESS)
        {
            return true;
        }

        return false;
    }

    public void initFun()
    {
        SupportMapFragment sp = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
        googleMap = sp.getMap();
        googleMap.setMyLocationEnabled(true);
        googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);


    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

Answer 1

使用您的主数据包名称生成 key 。
例如:我是我的项目，google map v2 在 com.ftravelbook.googlemapv2 中但是当生成 key 时，你必须使用你的主数据包名称(com.ftravelbook)以下是一些截图: