GoogleMapsDemo gives IllegalStateException

问题

I have did all steps which is give at google but lastly it give's this

errorCaused by: java.lang.IllegalStateException: The meta-data tag in your app's AndroidManifest.xml does not have the right value.  Expected 4132500 but found 0.  You must have the following declaration within the <application> element:     <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />

AndroidManifest.xml:

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

    <permission
        android:name="com.example.googlemapsdemo.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />
    <uses-permission android:name="com.example.googlemapsdemo.permission.MAPS_RECEIVE" />

    <uses-sdk
        android:minSdkVersion="12"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <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.WRITE_EXTERNAL_STORAGE" />

    <!-- Required to show current location -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <!-- Required OpenGL ES 2.0. for Maps V2 -->
    <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.example.googlemapsdemo.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="AIzaSyBLHwjdXsQK0sszxfrkoncHlqU3d2mDJok" />
    </application>

</manifest>

MainActivity.java:

package com.example.googlemapsdemo;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;

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

public class MainActivity extends Activity 
{
    private GoogleMap googleMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        try 
        {
            // Loading map
            initilizeMap();

        } catch (Exception e) 
        {
            e.printStackTrace();
        }

    }

    /**
     * function to load map. If map is not created it will create it for you
     * */
    private void initilizeMap() 
    {
        if (googleMap == null) 
        {
            googleMap = ((MapFragment) getFragmentManager().findFragmentById(
                    R.id.map)).getMap();

            // check if map is created successfully or not
            if (googleMap == null)
            {
                Toast.makeText(getApplicationContext(),
                        "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                        .show();
            }
        }
    }

    @Override
    protected void onResume() 
    {
        super.onResume();
        initilizeMap();
    }
}

回答1:

manifest file

For eclipse add this :

<meta-data android:name="com.google.android.gms.version" 
 android:value="@integer/google_play_services_version" />

If you are using Android Studio(latest version) with gradle0.7+ then add this line:

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

回答2:

Add the Google Play services version to your app's manifest

Edit your application's AndroidManifest.xml file, and add the following declaration within the element. This embeds the version of Google Play services that the app was compiled with.

You just need to add <meta-data> under <application> tag into your AndroidManifest.xml

....<application>
    <meta-data android:name="com.google.android.gms.version"  
     android:value="@integer/google_play_services_version" />
    </application>

来源：https://stackoverflow.com/questions/21397222/googlemapsdemo-gives-illegalstateexception