使用 ArcGIS android SDK 的离线地图

Question

我正在尝试使用 ArcGis android sdk 开发离线地图应用程序。按照 ArcGis website.Since 中的教程进行操作，它是一个离线地图应用程序，我正在没有互联网连接的情况下对其进行测试。但是，当我运行应用程序时， MapView 是空白的。它只是显示黑屏。当我检查 Logcat 时，它显示

11-26 14:39:57.757 28520-28520/com.example.lalprakash.offlinearcgismap D/GLSurfaceView: checkGLSurfaceViewlLogProperty get invalid command
11-26 14:39:57.839 28520-28548/com.example.lalprakash.offlinearcgismap I/System.out: httpget:http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer?f=json
11-26 14:39:57.840 28520-28548/com.example.lalprakash.offlinearcgismap I/System.out: http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer?f=json
11-26 14:39:57.846 28520-28548/com.example.lalprakash.offlinearcgismap I/System.out: [CDS][DNS]Unable to resolve host "server.arcgisonline.com": No address associated with hostname
11-26 14:39:57.846 28520-28548/com.example.lalprakash.offlinearcgismap E/ArcGIS: url =http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer
11-26 14:39:57.884 28520-28520/com.example.lalprakash.offlinearcgismap V/PhoneWindow: DecorView setVisiblity: visibility = 4 ,Parent =null, this =com.android.internal.policy.impl.PhoneWindow$DecorView{41ce4470 I.E..... R.....ID 0,0-0,0}
11-26 14:39:57.891 28520-28520/com.example.lalprakash.offlinearcgismap V/PhoneWindow: DecorView setVisiblity: visibility = 0 ,Parent =ViewRoot{41d35928 com.example.lalprakash.offlinearcgismap/com.example.lalprakash.offlinearcgismap.MainActivity,ident = 0}, this =com.android.internal.policy.impl.PhoneWindow$DecorView{41ce4470 V.E..... R.....ID 0,0-0,0}

我不明白发往 server.arcgisonline.com 的请求是从哪里发出的。我的java文件和xml文件如下

MainActivity.java

public class MainActivity extends Activity {

    MapView mMapView;
    String extern = Environment.getExternalStorageDirectory().getPath();
    final String tpkPath = "/ArcGIS/samples/OfflineRouting/ImageryTPK.tpk";
    TiledLayer mTileLayer;
    GraphicsLayer mGraphicsLayer = new GraphicsLayer(GraphicsLayer.RenderingMode.DYNAMIC);

    RouteTask mRouteTask = null;
    NAFeaturesAsFeature mStops = new NAFeaturesAsFeature();

    Locator mLocator = null;

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

        mTileLayer = new ArcGISLocalTiledLayer(extern + tpkPath);
        // Retrieve the map and initial extent from XML layout
        mMapView = (MapView) findViewById(R.id.map);

        // Set the tiled map service layer and add a graphics layer
        mMapView.addLayer(mTileLayer);
        mMapView.addLayer(mGraphicsLayer);
    }

}

activity_main.xml

<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">

    <com.esri.android.map.MapView
        android:id="@+id/map"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        initExtent = "-1.3296373526814876E7 3930962.41823043 -1.2807176545789773E7 4201243.7502468005"
        mapoptions.MapType="Topo"
        mapoptions.ZoomLevel="16" />
</RelativeLayout>

而build.gradle如下

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "com.example.lalprakash.offlinearcgismap"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        sourceSets.main{
            jniLibs.srcDir 'src/main/jni'
            jni.srcDirs=[]
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile files('libs/arcgis-android-api.jar')
    compile files('libs/arcgis-android-app-toolkit.jar')
    compile files('libs/jackson-all-1.9.0.jar')
}

此外，我已将 tpk 文件放在内存的根目录中。请帮助我，因为我非常需要它。谢谢。

Answer 1

你能从你的 XML 中删除 initextent 和 mapoption.maptype 并告诉我什么 happens.i 没有机会查看你的堆栈跟踪但这应该显示你你的在你的屏幕上显示地图

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