谷歌地图 API v2 不工作

【问题标题】：Google Maps API v2 not working谷歌地图 API v2 不工作
【发布时间】：2013-02-15 00:52:43
【问题描述】：

我正在尝试使用 Google Maps API v2 构建一个应用程序，但问题是，尽管我遵循了所有必需的说明，但该应用程序不断给我强制关闭。

这里是安卓部分

import android.support.v4.app.FragmentActivity;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;

public class GPSonMap extends FragmentActivity{

 MapView map;
 MapController controller;
 LocationManager locationManager;
 LocationListener listener;
 PendingIntent pendingIntent ;
 Criteria criteria;
 MapOverlay overlay;


@Override
public void onCreate(Bundle onsaved)
{
    super.onCreate(onsaved);
    setContentView(R.layout.map);
    Log.d("", "entered");


    map = (MapView)findViewById(R.id.mapView);
    }

这里是 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=".MapsActivity" >

<fragment

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

</RelativeLayout>

这是我的清单

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

        <uses-sdk
            android:minSdkVersion="14"
            android:targetSdkVersion="17" />
      <!--   <permission
              android:name="com.example.example.permission.MAPS_RECEIVE"
              android:protectionLevel="signature"/>
            <uses-permission android:name="com.bachelor.bond.permission.MAPS_RECEIVE"/>. -->

           <uses-permission android:name="android.permission.INTERNET" />
         <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
        <permission android:name="com.example.example.permission.C2D_MESSAGE" android:protectionLevel="signature" />
    <uses-permission android:name="com.example.example.permission.C2D_MESSAGE" /> 

    <!-- App receives GCM messages. -->
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <!-- GCM connects to Google Services. -->
    <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.READ_PHONE_STATE"/> 
    <!-- GCM requires a Google account. -->
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <!-- Keeps the processor from sleeping when a message is received. -->
    <uses-permission android:name="android.permission.WAKE_LOCK"
         />
    <uses-permission android:name="com.example.example.permission.MAPS_RECEIVE"/>
    <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" />  
    <!-- Permission to vibrate -->
        <uses-permission android:name="android.permission.VIBRATE"/>
        <uses-permission android:name = "android.permission.ACCESS_FINE_LOCATION"/>

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

        <uses-feature 
        android:glEsVersion="0x00020000" 
        android:required="true"/>
        <application
            android:allowBackup="true"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name">
            <uses-library android:name="com.google.android.maps" />
             <activity
                android:name=".GPSonMap"
                android:label="@string/app_name"
                 > <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>

            </activity>

             <uses-library android:name="com.google.android.maps" />
             <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
        <category android:name="com.example.example" />
      </intent-filter>
              <receiver android:name="com.google.android.gcm.GCMBroadcastReceiver" 
                 android:permission="com.google.android.c2dm.permission.SEND" >

    </receiver>
     <service android:name=".GCMIntentService" />
     <activity android:name="Login"></activity>

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

        </application>

    </manifest>

还有 Log Cat 输出

02-15 00:42:35.257: E/AndroidRuntime(2693): FATAL EXCEPTION: main
02-15 00:42:35.257: E/AndroidRuntime(2693): java.lang.RuntimeException: Unable to start         activity ComponentInfo{com.bachelor.bond/com.dxample.example.GPSonMap}:     android.view.InflateException: Binary XML file line #7: Error inflating class fragment
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.os.Handler.dispatchMessage(Handler.java:99)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.os.Looper.loop(Looper.java:137)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.main(ActivityThread.java:5039)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.reflect.Method.invokeNative(Native Method)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.reflect.Method.invoke(Method.java:511)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at dalvik.system.NativeStart.main(Native Method)
02-15 00:42:35.257: E/AndroidRuntime(2693): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.Activity.setContentView(Activity.java:1881)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at com.bachelor.bond.GPSonMap.onCreate(GPSonMap.java:54)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.Activity.performCreate(Activity.java:5104)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
02-15 00:42:35.257: E/AndroidRuntime(2693):     ... 11 more
02-15 00:42:35.257: E/AndroidRuntime(2693): Caused by:         android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment     com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and     has an empty constructor that is public
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.Fragment.instantiate(Fragment.java:401)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
02-15 00:42:35.257: E/AndroidRuntime(2693):     ... 21 more
02-15 00:42:35.257: E/AndroidRuntime(2693): Caused by: java.lang.ClassNotFoundException:     Didn't find class "com.google.android.gms.maps.SupportMapFragment" on path:     /system/framework/com.google.android.maps.jar:/data/app/com.bachelor.bond-1.apk
02-15 00:42:35.257: E/AndroidRuntime(2693):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
02-15 00:42:35.257: E/AndroidRuntime(2693):     at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
02-15 00:42:35.257: E/AndroidRuntime(2693):     ... 24 more

我面临的另一个问题是，当我尝试
import com.google.android.gms.maps.MapFragment; 它给出了一个错误，它无法识别包名称为com.google.android.gms，所以我什至不能使用GoogleMap或MapFragment。

那么有人有解决这两个问题的方法吗？

【问题讨论】：

    标签： android google-maps google-maps-api-2 google-maps-android-api-2


    【解决方案1】：

    如何在 Android 上通过 Google Maps API v2 显示 GOOGLE MAP。

    注意这两种情况都是设置 Google Play 服务和清单文件所必需的，包括多个权限和 API 密钥。

    1.在（支持）Fragment 中显示 Google 地图。

    ma​​in.xml

    <?xml version="1.0" encoding="utf-8"?>

<!-- This can go anywhere in your layout (see other demos for some examples). -->
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/map"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  class="com.google.android.gms.maps.SupportMapFragment"/>

    MainActivity.java

    /**
 * This shows how to create a simple activity with a map and a marker on the map.
 * <p>
 * Notice how we deal with the possibility that the Google Play services APK is not
 * installed/enabled/updated on a user's device.
 */
public class BasicMapActivity extends android.support.v4.app.FragmentActivity {
    /**
     * Note that this may be null if the Google Play services APK is not available.
     */
    private GoogleMap mMap;

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

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

    /**
     * Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
     * installed) and the map has not already been instantiated.. This will ensure that we only ever
     * call {@link #setUpMap()} once when {@link #mMap} is not null.
     * <p>
     * If it isn't installed {@link SupportMapFragment} (and
     * {@link com.google.android.gms.maps.MapView
     * MapView}) will show a prompt for the user to install/update the Google Play services APK on
     * their device.
     * <p>
     * A user can return to this Activity after following the prompt and correctly
     * installing/updating/enabling the Google Play services. Since the Activity may not have been
     * completely destroyed during this process (it is likely that it would only be stopped or
     * paused), {@link #onCreate(Bundle)} may not be called again so we should call this method in
     * {@link #onResume()} to guarantee that it will be called.
     */
    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            // Try to obtain the map from the SupportMapFragment.
            mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                    .getMap();
            // Check if we were successful in obtaining the map.
            if (mMap != null) {
                setUpMap();
            }
        }
    }

    /**
     * This is where we can add markers or lines, add listeners or move the camera. In this case, we
     * just add a marker near Africa.
     * <p>
     * This should only be called once and when we are sure that {@link #mMap} is not null.
     */
    private void setUpMap() {
        mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
    }
}

    2。在（支持）Fragment 中显示 MapView。

    ma​​in.xml

    <?xml version="1.0" encoding="utf-8"?>

<!-- This can go anywhere in your layout. -->
<com.google.android.gms.maps.MapView xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/map"
  android:layout_width="match_parent"
  android:layout_height="match_parent"/>

    MainActivity.java

    /**
 * This shows how to create a simple activity with a raw MapView and add a marker to it. This
 * requires forwarding all the important lifecycle methods onto MapView.
 */
public class RawMapViewDemoActivity extends android.support.v4.app.FragmentActivity {
    private MapView mMapView;


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

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


    }

    @Override
    protected void onResume() {
        super.onResume();
        mMapView.onResume();


    }



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

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

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


}

    【讨论】：

    • 请问，您能解释一下我必须在 Java 构建路径中检查哪些依赖项吗？
    【解决方案2】：

    大概是您没有在您的应用项目中添加对 Google Play 服务库项目的引用。请参阅the Google Play Services SDK documentation，特别是标题为“设置项目以使用 Google Play 服务 SDK”的部分。

    【讨论】：

    • 这可能很愚蠢，但我真的不知道如何进行。我将源代码放入文件夹 google-play-services_lib 但是当我从属性 => android 导入这个库时，没有什么可以导入，当我运行应用程序时再过一段时间，同样的问题依然存在。
    • @omar：“我将源代码放入文件夹 google-play-services_lib”——我不知道你在这里指的是什么。将 google-play-services_lib 项目导入 Eclipse，然后从 Project > Properties > Android > Libraries 添加对它的引用。
    • 是的，这很好，但是当我要添加对它的引用时，当我点击“添加”按钮时，会出现一个空列表。
    • @OmArHesham：检查您导入的google-play-services_lib 项目的项目> 属性> Android，并确保选中“是库”复选框。
    • @CommonsWare...我认为在这种情况下“是库”复选框未选中。
    【解决方案3】：

    我发现您在代码中遗漏了几处。

    答案 1：你的 GPSonMAP.java 必须像下面这样修改；

    public class GPSonMap extends android.support.v4.app.FragmentActivity{
 GoogleMap googlemap;  // "MapView map;" is wrong
 //MapController controller;  ==> it was depreciated.
 LocationManager locationManager;
 LocationListener listener;
 PendingIntent pendingIntent ;
 Criteria criteria;
 //MapOverlay overlay; ==> it was depreciated.
 SupportMapFragment fm; // add this


@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map);
        Log.d("", "entered");


    //map = (MapView)findViewById(R.id.mapView); ==> delete it.

     fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapView);
     googleMap = fm.getMap();
    }


}

    以上修改后，按“Ctrl + Shft +（字母）O”，会导入一些需要的类。

    答案2：您的布局中的xml文件必须修改如下；

    <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=".GPSonMap" >

    您的 MainActivity 不是 MapsActivity，而是 GPSonMap。

    答案 3：您的 Manifest 文件与您的包名称与清单文件中描述的包名称不匹配。请与包名一致。

    将“com.example.example”修改为你的包名。

    复制粘贴一些代码后，您必须至少检查包名和类名。

    【讨论】：

      【解决方案4】：

      我遇到了这个问题并且在浪费时间（超过 1.5 天的头发拉挫感）。然后，我观看了一段 youtube 视频，该视频对将 Google Play 服务添加到应用程序的说明进行了无聊的演练。好吧，在从 sdk 管理器添加 SDK 后的视频中，他们使用了 Eclipse“检查更新”。那个小魔法就出来了，下载了一个 SDK 管理器不做的 jar 文件！他们确实需要将此添加到说明中，以免人们感到沮丧。我很想从我的应用程序中删除谷歌地图。我用的是 1.0，我需要更新到 2.0 或沟地图。

      【讨论】：

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