谷歌地图V2.0不会工作和应用程序崩溃

Question

我正在一个地图应用程序。它在SDK 16上为我工作，但问题是我需要在sdk 8上扩展它，并且我的应用程序崩溃。这是我的整个代码sdk 16 here

我将support-library-v4作为externar JAR添加到项目中。我还添加了google-play-service-lib作为库。但没有任何工程

我改变Activity到FragmentActivity 也使用

googleMap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); 

我有很多问题

googleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap(); 

代替，但终于解决了它的SDK 16.我需要使用在sdk 8，但应用程序崩溃，并不起作用。

plz帮助我解决这个问题。

这是我的清单：

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


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



    <uses-permission android:name="com.ariagostar.maptest.permission.MAPS_RECEIVE" /> 
    <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:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/mahdi_theme" 
     android:name=".G" 
     > 
     <activity 
      android:name=".MainActivity" 
      android:label="@string/title_activity_main" 
      > 

     </activity> 

     <activity android:name=".SplashActivity"> 



     </activity> 
     <activity android:name=".LocationsActivity" 
      android:screenOrientation="portrait" 
      > 


     </activity> 
     <activity android:name=".AIDSActivity" 
      android:screenOrientation="portrait" 
      ></activity> 
     <activity android:name=".AboutActivity"></activity> 
     <activity android:name=".CureActivity" 
      android:screenOrientation="portrait" 
      ></activity> 
     <activity android:name=".EllatActivity" 
      android:screenOrientation="portrait" 
      ></activity> 
     <activity android:name=".InfectedActivity" 
      android:screenOrientation="portrait" 
      ></activity> 
     <activity android:name=".QuestionActivity" 
      android:screenOrientation="portrait" 
      > 




     </activity> 

     <activity android:name=".SeirActivity" 
      android:screenOrientation="portrait"></activity> 
     <activity android:name=".PreventionActivity" 
      android:screenOrientation="portrait"></activity> 
     <activity android:name=".TashdidActivity" 
      android:screenOrientation="portrait"></activity> 
     <activity android:name=".AboutUsActivity" 
      android:screenOrientation="portrait"></activity> 
     <activity android:name=".OtherProductActivity" 
      android:screenOrientation="portrait"></activity> 
     <activity android:name=".MapActivity" 
      android:label="@string/title_activity_main"> 

      <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" /> 

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

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

    </application> 

，这是我的地图活动：

import android.os.Bundle; 
import android.support.v4.app.FragmentActivity; 
import android.util.Log; 
import android.view.Menu; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.Toast; 

import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.CameraPosition; 
import com.google.android.gms.maps.model.LatLng; 


public class MapActivity extends FragmentActivity { 



     private GoogleMap googleMap; 

     @Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.map_form); 
      try { 
       Log.i("LOG", "map test 1"); 
       // Loading map 
       initilizeMap(); 
       Log.i("LOG", "map test 2"); 

      } catch (Exception e) { 
       Log.e("LOG", "I got an error", e); 
       e.printStackTrace(); 
      } 

      Button b1 = (Button) findViewById(R.id.button1); 

      b1.setOnClickListener(new OnClickListener() { 

       public void onClick(View v) { 
        double latitude =20.002 ; 
        double longitude = 3.399; 

        // create marker 
        //MarkerOptions marker = new MarkerOptions().position(new LatLng(latitude, longitude)).title("Hello Maps "); 

        // adding marker 
        //googleMap.addMarker(marker); 

        CameraPosition cameraPosition = new CameraPosition.Builder().target(
          new LatLng(37.385044, 78.486671)).zoom(12).build(); 

        googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition)); 

       } 
      }); 
     } 

     @Override 
     public boolean onCreateOptionsMenu(Menu menu) { 
      getMenuInflater().inflate(R.menu.activity_main, menu); 
      return true; 
     } 

     private void initilizeMap() { 
      if (googleMap == null) { 

       //googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap(); 

       //googleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap(); 
       //googleMap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); 
       googleMap = ((SupportMapFragment) getSupportFragmentManager().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() { 
      initilizeMap(); 
      super.onResume(); 
     } 


} 

，这是我map_form

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" > 

    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.MapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"/> 

    <Button 
     android:id="@+id/button1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:text="Button" /> 

</RelativeLayout> 

的logcat：

12-13 11:09:51.957: E/LOG(4706): I got an error 
12-13 11:09:51.957: E/LOG(4706): java.lang.NullPointerException 
12-13 11:09:51.957: E/LOG(4706): at com.ariagostar.hiv.MapActivity.initilizeMap(MapActivity.java:76) 
12-13 11:09:51.957: E/LOG(4706): at com.ariagostar.hiv.MapActivity.onCreate(MapActivity.java:32) 
12-13 11:09:51.957: E/LOG(4706): at android.app.Activity.performCreate(Activity.java:5372) 
12-13 11:09:51.957: E/LOG(4706): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104) 
12-13 11:09:51.957: E/LOG(4706): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2267) 
12-13 11:09:51.957: E/LOG(4706): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2359) 
12-13 11:09:51.957: E/LOG(4706): at android.app.ActivityThread.access$700(ActivityThread.java:165) 
12-13 11:09:51.957: E/LOG(4706): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1326) 
12-13 11:09:51.957: E/LOG(4706): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-13 11:09:51.957: E/LOG(4706): at android.os.Looper.loop(Looper.java:137) 
12-13 11:09:51.957: E/LOG(4706): at android.app.ActivityThread.main(ActivityThread.java:5455) 
12-13 11:09:51.957: E/LOG(4706): at java.lang.reflect.Method.invokeNative(Native Method) 
12-13 11:09:51.957: E/LOG(4706): at java.lang.reflect.Method.invoke(Method.java:525) 
12-13 11:09:51.957: E/LOG(4706): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187) 
12-13 11:09:51.957: E/LOG(4706): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003) 
12-13 11:09:51.957: E/LOG(4706): at dalvik.system.NativeStart.main(Native Method) 
12-13 11:09:51.957: E/AndroidRuntime(4706): FATAL EXCEPTION: main 
12-13 11:09:51.957: E/AndroidRuntime(4706): java.lang.RuntimeException: Unable to resume activity {com.ariagostar.hiv/com.ariagostar.hiv.MapActivity}: java.lang.NullPointerException 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2929) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2958) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2364) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread.access$700(ActivityThread.java:165) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1326) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.os.Handler.dispatchMessage(Handler.java:99) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.os.Looper.loop(Looper.java:137) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread.main(ActivityThread.java:5455) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at java.lang.reflect.Method.invoke(Method.java:525) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at dalvik.system.NativeStart.main(Native Method) 
12-13 11:09:51.957: E/AndroidRuntime(4706): Caused by: java.lang.NullPointerException 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at com.ariagostar.hiv.MapActivity.initilizeMap(MapActivity.java:76) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at com.ariagostar.hiv.MapActivity.onResume(MapActivity.java:90) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1209) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.Activity.performResume(Activity.java:5450) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2919) 
12-13 11:09:51.957: E/AndroidRuntime(4706):  ... 12 more 

Answer 1

我终于解决了这个问题。它只是使用

android:name="com.google.android.gms.maps.MapFragment" 

的，因为，应该用这一个：

android:name="com.google.android.gms.maps.SupportMapFragment" 

和应用程序正常工作

Answer 2

MapFragment或SupportMapFragment仅在API Level 12后受支持。建议使用SupportMapFragment。

Fragment类在API Level 11之前不可用，并且您的API Level 8不支持Fragment。而这就是为什么我认为你所得到的错误象下面这样：

Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader 

Answer 3

您需要在项目导入Google Play Services。

检查您是否已经下载了谷歌Play服务，在Android SDK Manager

欲了解更多信息Check this example

Answer 4

当你错误表示INSTALL_FAILED_MISSING_SHARED_LIBRARY and cancels the istalation. in my real device "unfortunately ... has stoped"和你正在使用的SupportMapFragment及其supportv4库，所以应该增加可用您项目中的support-library-v4支持API12下方的地图片段。

更改onResume()如下：

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