Xamarin Android Google Mapsのアプリ地図は空白で、エラーはありません

Question

私はMonodroidアンドロイドアプリに取り組んでいます。私はフラグメントを含むGoogleマップを追加しましたが、マップは表示されず、エラーがスローされません。

マイAXMLコード：

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

アクティビティコード：

protected async override void OnResume() 
    { 
     base.OnResume(); 


     tblLocations location = Nav.GetAndRemoveParameter<tblLocations>(Intent); 
     LatLng latLng = new LatLng(location.Latitude, location.Longitude); 
     CameraPosition.Builder builder = CameraPosition.InvokeBuilder(); 
     builder.Target(latLng); 
     builder.Zoom(5); 

     CameraPosition cameraPosition = builder.Build(); 
     CameraUpdate cUpdate = CameraUpdateFactory.NewCameraPosition(cameraPosition); 

     mapFrag = (MapFragment)FragmentManager.FindFragmentById(Resource.Id.map); 
     map = mapFrag.Map; 
     if (map != null) 
     { 
      map.MoveCamera(cUpdate); 
     } 
    } 

私はそれがAPIキーで何か実現が、私はここで何をしないのですか？

LOGのCAT出力

04-01 16:40:24.662 D/ChimeraFileApk(20730): Classloading successful. Optimized code found. 
    04-01 16:40:24.730 E/NEW_BHD (20811): Battery Power Supply logging Daemon start!!!!! 
    04-01 16:40:24.730 E/NEW_BHD (20811): Cannot run on production devices! 
    04-01 16:40:24.755 I/Google Maps Android API(20730): Google Play services client version: 848700004-01 16:40:24.755 I/Google Maps Android API(20730): Google Play services client version: 8487000 
    04-01 16:40:24.764 I/Google Maps Android API(20730): Google Play services package version: 8703436 
    04-01 16:40:24.804 I/art  (20530): CollectorTransition marksweep + semispace GC freed 471(-32KB) AllocSpace objects, 0(0B) LOS objects, 24% free, 7MB/9MB, paused 16.348ms total 16.348ms 
    04-01 16:40:25.088 D/VoldConnector(2225): SND -> {10 volume mkdirs /storage/emulated/0/Android/data/asked.askeduniversalremote/cache/} 
    04-01 16:40:25.220 D/Mono (20730): Assembly Ref addref Xamarin.GooglePlayServices.Maps[0xb9b18688] -> Xamarin.GooglePlayServices.Basement[0xb9b148d0]: 2 
    04-01 16:40:25.283 I/b  (20730): Sending API token request. 
    04-01 16:40:25.316 I/Keyboard.Facilitator(3831): onFinishInput() 
    04-01 16:40:25.357 I/LaunchCheckinHandler(2225): Displayed asked.askeduniversalremote/md5d1d3b2ca018abe66d5a9f8b4db614c6f.ViewOtherLocationOnMapActivity,wp,ca,947 
    04-01 16:40:25.357 I/ActivityManager(2225): Displayed asked.askeduniversalremote/md5d1d3b2ca018abe66d5a9f8b4db614c6f.ViewOtherLocationOnMapActivity: +947ms 
    04-01 16:40:25.372 E/NetlinkEvent( 299): NetlinkEvent::FindParam(): Parameter 'UID' not found 
    04-01 16:40:25.612 I/b  (20730): Received API Token: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 
    04-01 16:40:25.612 I/c  (20730): Scheduling next attempt in 431700 seconds. 
    04-01 16:40:25.615 I/d  (20730): Saved auth token 
    04-01 16:40:25.719 I/SFPerfTracer( 258):  triggers: (rate: 7:437) (compose: 1:20) (post: 0:21) (render: 2:51) (6:7515 frames) (7:10501) 
    04-01 16:40:25.719 D/SFPerfTracer( 258):  layers: (3:12) (FocusedStackFrame (0xb782cb78): 0:383)* (DimLayer (0xb786b8f0): 0:2)* (StrictModeFlash (0xb7804b60): 0:50)* (StatusBar (0xb780a350): 0:2953) (com.android.systemui.ImageWallpaper (0xb781e148): 0:163)* (NavigationBar (0xb78a5528): 0:402) (DimLayer (0xb7892338): 1:14)* (asked.askeduniversalremote/md5d1d3b2ca018abe66d5a9f8b4db614c6f.WaitTimeActivity (0xb789fa28): 0:51)- (asked.askeduniversalremote/md5d1d3b2ca018abe66d5a9f8b4db614c6f.ViewOtherSitesActivity (0xb78aef90): 0:108)- (asked.askeduniversalremote/md5d1d3b2ca018abe66d5a9f8b4db614c6f.ViewOtherLocationOnMapActivity (0xb789f9e0): 7:25) 
    04-01 16:40:27.516 D/audio_hw_primary( 303): out_standby: enter: stream (0xb7690308) usecase(1: low-latency-playback)04-01 16:40:27.516 D/audio_hw_primary( 303): out_standby: enter: stream (0xb7690308) usecase(1: low-latency-playback) 
    04-01 16:40:27.616 D/hardware_info( 303): hw_info_append_hw_type : device_name = speaker04-01 16:40:27.616 D/hardware_info( 303): hw_info_append_hw_type : device_name = speaker 
    04-01 16:40:29.766 E/NEW_BHD (20866): Cannot run on production devices! 
    04-01 16:40:31.127 D/Mono (20730): [0x9e1ff930] worker finishing 
    04-01 16:40:31.167 D/WifiStateMachine(2225): starting scan for 
    04-01 16:40:34.778 D/SLPC (3416): slpc_poll_loop(): handled 1 
    04-01 16:40:34.778 D/SLPC (3416): slpc_poll_handle_event(): transition 
    04-01 16:40:34.778 D/SLPC (3416): slpc_poll_loop(): about to poll... 
    04-01 16:40:34.778 D/sensorhub(3416): sensorhub_poll() polling... 
    04-01 16:40:34.796 E/NEW_BHD (20867): Battery Power Supply logging Daemon start!!!!! 
    04-01 16:40:34.797 E/NEW_BHD (20867): Cannot run on production devices! 
    04-01 16:40:35.292 D/NetlinkSocketObserver(2225): NeighborEvent{elapsedMs=6311820, 192.168.105.1, [C86C870B13EB], RTM_NEWNEIGH, NUD_STALE} 
    04-01 16:40:35.783 V/AlarmManager(2225): sending alarm {58361af type 2 *walarm*:com.motorola.slpc.ALARM_STOWED} 
    04-01 16:40:35.786 D/ModalityService(3416): StowedListener(): callback onStowedChange() -> 2 
    04-01 16:40:35.787 V/AlarmManager(2225): done {58361af, *walarm*:com.motorola.slpc.ALARM_STOWED} [4ms] 
    04-01 16:40:35.787 D/ModalityManager(5416): onStowedChange() -> 2, package: com.motorola.actions 

Logcatは今追加してみ次の警告

04-04 09:30:07.355 W/ctxmgr (4204): [AclManager]checkPermissionTypeStatus: no inject permission for { uid=10019, packageName=com.google.android.gms }. Returned permission was: PACKAGE_NOT_WHITELISTED for context name=POWER_CONNECTION, account=account#-517948760# 
04-04 09:30:07.358 W/ctxmgr (4204): [AclManager]checkPermissionTypeStatus: no inject permission for { uid=10019, packageName=com.google.android.gms }. Returned permission was: PACKAGE_NOT_WHITELISTED for context name=POWER_CONNECTION, account=account#-517948760# 

Answer 1

Google APIコンソールに提供されているハッシュが正しいことを確認して、debug.keystoreとproductionキーストアの2つのハッシュを提供できます。

ハッシュが正しいかどうかを確認するには、デバッグ/プロダクションキーストアでアプリを実行します。このスニペットのログ出力を確認します（これはJavaですが、Xamarinに類似のAPIがあると思います）。 APIコンソール：

PackageInfo info; 
try { 
    info = getPackageManager().getPackageInfo("com.you.name", PackageManager.GET_SIGNATURES); 
    for (Signature signature : info.signatures) { 
     MessageDigest md; 
     md = MessageDigest.getInstance("SHA"); 
     md.update(signature.toByteArray()); 
     String something = new String(Base64.encode(md.digest(), 0)); 
     //String something = new String(Base64.encodeBytes(md.digest())); 
     Log.e("hash key", something); 
    } 
} catch (NameNotFoundException e1) { 
    Log.e("name not found", e1.toString()); 
} catch (NoSuchAlgorithmException e) { 
    Log.e("no such an algorithm", e.toString()); 
} catch (Exception e) { 
    Log.e("exception", e.toString()); 
} 

Answer 2

を示しているUPDATE：

のAndroidManifest.xmlで <application>インサイド

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

Answer 3

ここでは、あなたのアプリケーションを実行すると、あなたの `ADB logcat`は何を言ってん

private void CheckSignatureHash() 
    { 
    try 
    { 
       PackageInfo info = PackageManager.GetPackageInfo("com.package.name", PackageInfoFlags.Signatures); 
       string hash = ""; 
       foreach (var sign in info.Signatures) 
       { 
        MessageDigest md = MessageDigest.GetInstance("SHA"); 
        md.Update(sign.ToByteArray()); 
        hash += Base64.EncodeToString(md.Digest(), Base64Flags.Default); 
        Console.WriteLine("***********************************"); 
        Console.WriteLine("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"); 
        Console.WriteLine("KeyHash:" + hash); 
        Console.WriteLine("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"); 
        Console.WriteLine("***********************************"); 
       } 

       //Toast.MakeText(this, hash, ToastLength.Short).Show(); 
    } 
    catch (PackageManager.NameNotFoundException e) 
    { 
    } 
    catch (NoSuchAlgorithmException e) 
    { 
    } 
}