這裏CompositeFragment MAP無法初始化引擎兩次

我完全從HERE的官方開始指南pdf中複製了這段代碼，但是當我嘗試運行它時，它在componentFragment.init()上出錯，出現UNKNOWN錯誤。這裏CompositeFragment MAP無法初始化引擎兩次

錯誤信息：

java.lang.RuntimeException: Cannot initialize the engine twice 
    at com.nokia.maps.MapsEngine.<init>(MapsEngine.java:604) 
    at com.nokia.maps.MapsEngine.b(MapsEngine.java:897) 
    at com.nokia.maps.MapsEngine.b(MapsEngine.java:394) 
    at com.nokia.maps.MapsEngine.a(MapsEngine.java:346) 
    at com.here.android.mpa.common.MapEngine.init(MapEngine.java:129) 
    at com.nokia.maps.al.a(CompositeFragmentImpl.java:92) 
    at com.here.android.mpa.ar.CompositeFragment.init(CompositeFragment.java:108) 
    at hu.appz4.heretest.BasicMapActivity.init(BasicMapActivity.java:106) 
    at hu.appz4.heretest.BasicMapActivity.onRequestPermissionsResult(BasicMapActivity.java:97) 
    at hu.appz4.heretest.BasicMapActivity.checkPermissions(BasicMapActivity.java:80) 
    at hu.appz4.heretest.BasicMapActivity.onCreate(BasicMapActivity.java:58) 
    at android.app.Activity.performCreate(Activity.java:6272) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494) 
    at android.app.ActivityThread.access$900(ActivityThread.java:157) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1356) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:148) 
    at android.app.ActivityThread.main(ActivityThread.java:5551) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)

BasicMapActivity.java

package hu.appz4.heretest; 

import android.Manifest; 
import android.Manifest.permission; 
import android.app.Activity; 
import android.content.pm.PackageManager; 
import android.os.Bundle; 
import android.support.annotation.NonNull; 
import android.support.v4.app.ActivityCompat; 
import android.support.v4.content.ContextCompat; 
import android.support.v7.app.AppCompatActivity; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.Toast; 

import com.here.android.mpa.ar.ARController; 
import com.here.android.mpa.ar.ARController.Error; 
import com.here.android.mpa.ar.ARIconObject; 
import com.here.android.mpa.ar.CompositeFragment; 
import com.here.android.mpa.common.GeoCoordinate; 
import com.here.android.mpa.common.Image; 
import com.here.android.mpa.common.MapEngine; 
import com.here.android.mpa.common.OnEngineInitListener; 
import com.here.android.mpa.mapping.Map; 

import java.io.IOException; 
import java.util.ArrayList; 
import java.util.Arrays; 
import java.util.List; 

public class BasicMapActivity extends Activity { 
    /** 
    * permissions request code 
    */ 
    private final static int REQUEST_CODE_ASK_PERMISSIONS = 1000; 

    /** 
    * Permissions that need to be explicitly requested from end user. 
    */ 
    private static final String[] REQUIRED_SDK_PERMISSIONS = new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.WRITE_EXTERNAL_STORAGE, 
                      Manifest.permission.CAMERA, permission.ACCESS_NETWORK_STATE, permission.ACCESS_WIFI_STATE, 
                      permission.INTERNET}; 
    private Map    map; 
    private ARController  arController; 
    // buttons which will allow the user to start LiveSight and add objects 
    private Button   startButton; 
    private Button   stopButton; 
    private Button   toggleObjectButton; 
    // ARIconObject represents the image model which LiveSight accepts for display 
    private ARIconObject  arIconObject; 
    private boolean   objectAdded; 
    private CompositeFragment compositeFragment; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     checkPermissions(); 
    } 

    /** 
    * Checks the dynamically-controlled permissions and requests missing permissions from end user. 
    */ 
    protected void checkPermissions() { 
     final List<String> missingPermissions = new ArrayList<String>(); 
     // check all required dynamic permissions 
     for (final String permission : REQUIRED_SDK_PERMISSIONS) { 
      final int result = ContextCompat.checkSelfPermission(this, permission); 
      if (result != PackageManager.PERMISSION_GRANTED) { 
       missingPermissions.add(permission); 
      } 
     } 
     if (!missingPermissions.isEmpty()) { 
      // request all missing permissions 
      final String[] permissions = missingPermissions.toArray(new String[missingPermissions.size()]); 
      ActivityCompat.requestPermissions(this, permissions, REQUEST_CODE_ASK_PERMISSIONS); 
     } else { 
      final int[] grantResults = new int[REQUIRED_SDK_PERMISSIONS.length]; 
      Arrays.fill(grantResults, PackageManager.PERMISSION_GRANTED); 
      onRequestPermissionsResult(REQUEST_CODE_ASK_PERMISSIONS, REQUIRED_SDK_PERMISSIONS, grantResults); 
     } 
    } 

    @Override 
    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) { 
     switch (requestCode) { 
      case REQUEST_CODE_ASK_PERMISSIONS: 
       for (int index = permissions.length - 1; index >= 0; --index) { 
        if (grantResults[index] != PackageManager.PERMISSION_GRANTED) { 
         // exit the app if one permission is not granted 
         Toast.makeText(this, "Required permission '" + permissions[index] + "' not granted, exiting", Toast.LENGTH_LONG).show(); 
         finish(); 
         return; 
        } 
       } 
       // all permissions were granted 
       init(); 
       break; 
     } 
    } 

    private void init() { 
     setContentView(R.layout.activity_main); 
     // Search for the composite fragment to finish setup by calling init(). 
     compositeFragment = (CompositeFragment) getFragmentManager().findFragmentById(R.id.compositefragment); 
     compositeFragment.init(this, new OnEngineInitListener() { 
      @Override 
      public void onEngineInitializationCompleted(OnEngineInitListener.Error error) { 
       if (error == OnEngineInitListener.Error.NONE) { 
        // retrieve a reference of the map from the composite fragment 
        map = compositeFragment.getMap(); 
        // Set the map center to the Vancouver Downtown region 
        map.setCenter(new GeoCoordinate(47.529877, 19.032750, 0.0), Map.Animation.NONE); 
        // Set the map zoom level to the average between min and max 
        map.setZoomLevel((map.getMaxZoomLevel() + map.getMinZoomLevel())/2); 
        // LiveSight setup should be done after fragment init is complete 
        setupLiveSight(); 
       } else { 
        Toast.makeText(BasicMapActivity.this, "ERROR: Cannot initialize Composite Fragment" + " - " + error.getDetails(), Toast.LENGTH_SHORT).show(); 
        System.out.println("ERROR: Cannot initialize Composite Fragment" + " - " + error.getDetails()); 
       } 
      } 
     }); 
     // hold references to the buttons for future use 
     startButton = (Button) findViewById(R.id.startLiveSight); 
     stopButton = (Button) findViewById(R.id.stopLiveSight); 
     toggleObjectButton = (Button) findViewById(R.id.toggleObject); 
     startButton.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(final View v) { 
       startLiveSight(v); 
      } 
     }); 
     stopButton.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(final View v) { 
       stopLiveSight(v); 
      } 
     }); 
     toggleObjectButton.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(final View v) { 
       toggleObject(v); 
      } 
     }); 
    } 

    private void setupLiveSight() { 
     // ARController should not be used until fragment init has completed 
     arController = compositeFragment.getARController(); 
     // tells LiveSight to display icons while viewing the map (pitch down) 
     arController.setUseDownIconsOnMap(true); 
     // tells LiveSight to use a static mock location instead of the devices GPS fix 
     arController.setAlternativeCenter(new GeoCoordinate(47.529877, 19.032750, 0.0)); 
    } 

    public void startLiveSight(View view) { 
     if (arController != null) { 
      // triggers the transition from Map mode to LiveSight mode 
      Error error = arController.start(); 
      if (error == Error.NONE) { 
       startButton.setVisibility(View.GONE); 
       stopButton.setVisibility(View.VISIBLE); 
      } else { 
       Toast.makeText(getApplicationContext(), "Error starting LiveSight: " + error.toString(), Toast.LENGTH_LONG).show(); 
      } 
     } else { 
      Toast.makeText(getApplicationContext(), "ArController NULL", Toast.LENGTH_LONG).show(); 
     } 
    } 

    public void stopLiveSight(View view) { 
     if (arController != null) { 
      // exits LiveSight mode and returns to Map mode 
      Error error = arController.stop(true); 
      if (error == Error.NONE) { 
       startButton.setVisibility(View.VISIBLE); 
       stopButton.setVisibility(View.GONE); 
      } else { 
       Toast.makeText(getApplicationContext(), "Error stopping LiveSight: " + error.toString(), Toast.LENGTH_LONG).show(); 
      } 
     } 
    } 

    public void toggleObject(View view) { 
     if (arController != null) { 
      if (!objectAdded) { 
       if (arIconObject == null) { 
        final Image image = new Image(); 
        try { 
         image.setImageResource(R.mipmap.ic_launcher); 
        } catch (IOException e) { 
         e.printStackTrace(); 
        } 
        // creates a new icon object which uses the same image in up and down views 
        arIconObject = new ARIconObject(new GeoCoordinate(47.529877, 19.032750, 2.0), (View) null, image); 
       } 
       // adds the icon object to LiveSight to be rendered 
       arController.addARObject(arIconObject); 
       objectAdded = true; 
       toggleObjectButton.setText("Remove Object"); 
      } else { 
       // removes the icon object from LiveSight, it will no longer be renderedarController.removeARObject(arIconObject); 
       objectAdded = false; 
       toggleObjectButton.setText("Add Object"); 
      } 
     } 
    } 
}

的build.gradle依賴性（進口官以下從指南.pdf此處的步驟，sdk.aar）

dependencies { 
    compile fileTree(include: ['*.jar'], dir: 'libs') 
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 
     exclude group: 'com.android.support', module: 'support-annotations' 
    }) 
    compile 'com.android.support:appcompat-v7:25.2.0' 
    testCompile 'junit:junit:4.12' 
    compile project(':HERE-sdk') 
}

的AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest package="hu.appz4.heretest" 
      xmlns:android="http://schemas.android.com/apk/res/android"> 

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 
    <uses-permission android:name="android.permission.INTERNET"/> 
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> 
    <!-- Additional permission for LiveSight 
    <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />--> 
    <uses-permission android:name="android.permission.CAMERA"/> 
    <application 
     android:icon="@mipmap/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/Theme.AppCompat"> 
     <activity 
      android:name="hu.appz4.heretest.BasicMapActivity" 
      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.here.android.maps.appid" 
      android:value="the app id from HERE site"/> 
     <meta-data 
      android:name="com.here.android.maps.apptoken" 
      android:value="the app code from HERE site"/> 
     <meta-data 
      android:name="com.here.android.maps.license.key" 
      android:value="the license key from HERE site"/> 
    </application> 
</manifest>

activity_main.xml中

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context="hu.appz4.heretest.BasicMapActivity"> 

    <fragment 
     class="com.here.android.mpa.ar.CompositeFragment" 
     android:id="@+id/compositefragment" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent"/> 
    <Button 
     android:id="@+id/startLiveSight" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentLeft="true" 
     android:onClick="startLiveSight" 
     android:text="@string/label_button_startlivesight" /> 
    <Button 
     android:id="@+id/stopLiveSight" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentRight="true" 
     android:onClick="stopLiveSight" 
     android:text="@string/label_button_stoplivesight" 
     android:visibility="gone" /> 
    <Button 
     android:id="@+id/toggleObject" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" 
     android:onClick="toggleObject" 
     android:text="@string/label_button_addobject" /> 
    <ImageView 
     android:id="@+id/imageView" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"/> 

</RelativeLayout>

來源

2017-03-09 Kiskunk

它可能是一些你的init（）方法被調用兩次。這裏的地圖不會初始化兩次，除非和直到它的單一噸級。使CompositeFragment單身它會解決你的問題。 –

您是否已在**清單文件中設置了正確的應用程序ID，應用程序代碼和許可證密鑰** –

在調試模式下，compositeFragment.init（）僅調用一次，並且由於HERE解碼而無法訪問內部代碼。 – Kiskunk

我意外地管理通過將此代碼添加到的AndroidManifest.xml

<service 
    android:name="com.here.android.mpa.service.MapService" 
    android:exported="true" 
    android:label="HereMapService" 
    android:process="global.Here.Map.Service.v2"> 
     <intent-filter> 
     <action android:name="com.here.android.mpa.service.MapService"/> 
     </intent-filter> 
</service>

來源

2017-03-09 15:25:42 Kiskunk

服務是需要下載和共享地圖存儲的訪問權限。不幸的是，在v3.3.0中存在一個錯誤，它沒有正確報告初始化錯誤。這現在已經在v3.3.1中解決了。 –

@DavidLeong何時會發布v3.3.1？ –

很快。它應該修復這裏報告的錯誤。而不是一些例外，它應該報告「缺少服務」 –

來解決它在棉花糖你需要d添加4許可，並在地圖上會工作的罰款

ACCESS_NETWORK_STATE); 
    int FourthPermission = ContextCompat.checkSelfPermission(getApplicationContext(), ACCESS_WIFI_STATE); 
    int SecondPermissionResult = ContextCompat.checkSelfPermission(getApplicationContext(), ACCESS_FINE_LOCATION); 
    int ThirdPermissionResult = ContextCompat.checkSelfPermission(getApplicationContext(), WRITE_EXTERNAL_STORAGE);

使用該鏈接的權限

Request Check Multiple Run time Permissions at once in android Marshmallow

@Override 
public void onPause() { 
    super.onPause(); 
    if (compositeFragment != null){ 
     try { 
      this.getFragmentManager().beginTransaction().remove(compositeFragment).commit(); 
     }catch (Exception exONDestroyView){ 
      System.out.println(exONDestroyView); 
     } 
    } 
} 


@Override 
public void onDestroy() { 
    super.onDestroy(); 

    if (compositeFragment != null){ 
     try { 
      this.getFragmentManager().beginTransaction().remove(compositeFragment).commit(); 
     }catch (Exception exONDestroy){ 
      System.out.println(exONDestroy); 
     } 
    } 

}

添加兩個方法在您的活動希望這有助於

來源

2017-03-14 06:35:27 kushal

然後你沒有閱讀代碼。 – Kiskunk

ops對不起...在趕時間:) – kushal

那裏沒有問題。 – Kiskunk

這裏CompositeFragment MAP無法初始化引擎兩次

回答

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