android - 使用 ArcGIS android SDK 的离线 map

Question

我正在尝试使用 ArcGis android sdk 开发离线 map 应用程序。按照 ArcGis 网站上的教程进行操作。由于它是一个离线 map 应用程序，因此我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，它说

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}

我无法理解从哪里发出对 server.arcgisonline.com 的请求。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>

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 并告诉我发生了什么吗？我还没有机会查看你的堆栈跟踪，但这应该会在你的屏幕上显示你的 map