Google Maps API V2'无法加载地图。 即使我检查权限和密钥库也无法联系Google服务器

Question

I follow the guide to create a google map sample,

but it always throw following error.

E/Google Maps Android API(27821): Failed to load map.  Could not contact Google servers.

permission READ_GSERVICES and debug and release keystore have been tested. They also can't resolve above problem. Could anyone tell me why it throw that error?

Manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.where.common"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />
    <permission
        android:name="com.where.common.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />
    <uses-permission android:name="com.where.common.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <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" >
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="AIzaSyDawEkMP7gdiB4nOOkXcdUcxSAvm0kfCmI" />
        <activity
            android:name="com.where.common.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>

Java file:

package com.where.common;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

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

}

View file:

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

Answer 1

Make sure all below mentioned points are taken care:

1) Wrong service was enabled. Make sure the " Google Maps Android API v2 ", not " Google Maps API v2 " is enabled and re-generate the API key.

2) Add the following elements to your manifest. Replace com.example.mapdemo with the package name of your application.

3) Use of correct certificate and key . Release certificate, which WILL NOT WORK during debugging when you run the app on my phone. You have to use the debugging keystore certificate fingerprint instead.

Answer 2

在尝试新的API KEY之前，请不要忘记清除程序缓存：)因为即使您更改API密钥，Android也会使用第一个API密钥。

Answer 3

did you added all the other need permissions?

<permission android:name="com.eadesign.skygiraffefinalv2.permission.MAPS_RECEIVE" android:protectionLevel="signature"/>
<uses-permission android:name="com.eadesign.skygiraffefinalv2.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-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

UPDATE:

1. The meta-data part should be at the most lower part of the application tag, like so:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.where.common"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="16" />
<permission
    android:name="com.where.common.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />
<uses-permission android:name="com.where.common.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<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.where.common.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="AIzaSyDawEkMP7gdiB4nOOkXcdUcxSAvm0kfCmI" />
</application>

2. another problem I see is that you develop your application for API V8, so you have to use the SupportMapFragment and FragmentActivity for your Activity .

3. and last thing for your Map to work you have to add an License activity for Google Licensing info.

Answer 4

Finally, I find why this would happen. Because I write

<uses-permission android:name="android.permission.com.google.android.providers.gsf.permission.READ_GSERVICES" />

It is wrong. It should be

<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

Here I thanks for Emil Adz's patience to help me!

Answer 5

I had same problem. After creating API key a lot of time,the problem still exists. Then i simply uninstall the application and installed it again.basically the application is storing wrong api key credentials in the cache memory.And when we rerun the the app,It just loads it from cache.So installing the application again solves my problem.

Answer 6

Did you solve the problem? May be this is the problem ->

Wrong service was enabled. Make sure the "Google Maps Android API v2", not "Google Maps API v2" is enabled and re-generate the API key. ( https://stackoverflow.com/a/13805807/1300982 )

If this is the problem, do not forget to Regenerate the API Key.

Answer 7

我通过将支持添加到布局类的片段中解决了这个问题：

class="com.google.android.gms.maps.SupportMapFragment"

Answer 8

I had a similar issue as user2204477. I had

<uses-permission android:name="com.google.android.providers.gsf.permissions.READ_GSERVICES" />

It should be

<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

Note the wrong one says "permissions" and the correct one says "permission". I just wasted 5 hours trying to figure this out lol.

Answer 9

I had same problem! Reinstalled it 50 times. Just clear cache and remove all data for application on Android device before deleting. It helps, thanks to Gods...

Answer 10

Check permissions

<uses-permission android:name="android.permission.INTERNET" />
<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-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

<permission
    android:name="com.packagename.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />