ArcGIS for Android 地图图文查询

1.前期项目准备

1.1. 创建新工程

• 新建一个空活动项目

  

• 选择语言、平台，修改命名等

  

1.2. 添加ArcGIS SDK

• build.gradle (Project: <project name>)添加

  maven {
  
      url 'https://esri.jfrog.io/artifactory/arcgis'
  
  }
  
  

• build.gradle (Module: <module name>)添加

  implementation 'com.esri.arcgisruntime:arcgis-android:100.10.0'
  
  

• Gradle更新：Sync Project with Gradle Files

• AndroidManifest.xml添加

  //网络权限
  
  <uses-permission android:name="android.permission.INTERNET" />
  
  //use a MapView (2D) require at least OpenGL ES 2.x:
  
  <uses-feature android:glEsVersion="0x00020000" android:required="true" />
  
  

• 在appdbuild.gradle（Module:app）的android部分指定Java版本

  compileOptions {
  
      sourceCompatibility JavaVersion.VERSION_1_8
  
      targetCompatibility JavaVersion.VERSION_1_8
  
  }
  
  

1.3. 添加MapView地图控件

• 修改activity_main.xml，替换TextView

      <com.esri.arcgisruntime.mapping.view.MapView
  
              android:id="@+id/mapView"
  
              android:layout_height="fill_parent"
  
              android:layout_width="fill_parent"
  
              tools:ignore="MissingConstraints">
  
      </com.esri.arcgisruntime.mapping.view.MapView>
  
  

2.地图点击查询属性

2.1.定义变量

定义相关变量

    private MapView mMapView;

    private Callout mCallout;

    private ServiceFeatureTable mServiceFeatureTable;

2.2.添加在线图层

通过新建ServiceFeatureTable实例添加在线图层

        mServiceFeatureTable =new ServiceFeatureTable(getResources().getString(R.string.us_daytime_population_url));

        mFeatureLayer=new FeatureLayer(mServiceFeatureTable);

        mFeatureLayer.setOpacity(0.8f);

        mFeatureLayer.setMaxScale(10000);

        SimpleLineSymbol lineSymbol=new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.BLACK, 1);

        SimpleFillSymbol fillSymbol=new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, Color.YELLOW, lineSymbol);

        mFeatureLayer.setRenderer(new SimpleRenderer(fillSymbol));

        map.getOperationalLayers().add(mFeatureLayer);

        mMapView.setViewpointCenterAsync(new Point(-11000000,5000000, SpatialReferences.getWebMercator()),100000000);

        mCallout=mMapView.getCallout();

2.3.添加点击（touch）监听

       mMapView.setOnTouchListener(new DefaultMapViewOnTouchListener(this,mMapView){

            @Override

            public boolean onSingleTapConfirmed(MotionEvent e) {

                if (mCallout.isShowing()){

                    mCallout.dismiss();

                }

                final android.graphics.Point screenPoint =new android.graphics.Point(Math.round(e.getX()),Math.round(e.getY()));

                int tolerance = 10;

                final ListenableFuture<IdentifyLayerResult> identifyLayerResultListenableFuture=

                        mMapView.identifyLayerAsync(mFeatureLayer,screenPoint,tolerance,false,1);

                identifyLayerResultListenableFuture.addDoneListener(()->{

                    try {

                        IdentifyLayerResult identifyLayerResult=identifyLayerResultListenableFuture.get();

                        TextView calloutContent = new TextView(getApplicationContext());

                        calloutContent.setTextColor(Color.BLACK);

                        calloutContent.setSingleLine(false);

                        calloutContent.setVerticalScrollBarEnabled(true);

                        calloutContent.setScrollBarStyle(View.SCROLLBARS_INSIDE_INSET);

                        calloutContent.setMovementMethod(new ScrollingMovementMethod());

                        calloutContent.setLines(identifyLayerResult.getElements().get(0).getAttributes().size());

                        for (GeoElement element:identifyLayerResult.getElements()){

                            Feature feature =(Feature) element;

                            Map<String,Object> attr =feature.getAttributes();

                            Set<String> keys=attr.keySet();

                            for (String key:keys){

                                Object value =attr.get(key);

                                if (value instanceof GregorianCalendar){

                                    SimpleDateFormat simpleDateFormat=new SimpleDateFormat("dd-MMM-yyyy", Locale.US);

                                    value=simpleDateFormat.format(((GregorianCalendar) value).getTime());

                                }

                                calloutContent.append(key+" | "+value+"\n");

                            }

                            Envelope envelope=feature.getGeometry().getExtent();

                            mMapView.setViewpointGeometryAsync(envelope,10);

                            mCallout.setLocation(envelope.getCenter());

                            mCallout.setContent(calloutContent);

                            mCallout.show();

                        }

                    }catch (Exception e1){

                        Log.e(getResources().getString(R.string.app_name),"Select feature fail : "+e1.getMessage());

                    }

                });

                return super.onSingleTapConfirmed(e);

            }

        });

2.4.重写onPause()、onResume()、onDestroy()函数

    @Override

    protected void onPause() {

        mMapView.pause();

        super.onPause();

    }

    @Override

    protected void onResume() {

        super.onResume();

        mMapView.resume();

    }

    @Override protected void onDestroy() {

        mMapView.dispose();

        super.onDestroy();

    }

2.5.编译测试

3.输入属性查询地图对象

3.1.定义变量

定义相关变量

    private MapView mMapView;

    private ServiceFeatureTable mServiceFeatureTable;

    private FeatureLayer mFeatureLayer;

3.2.添加在线图层

通过新建ServiceFeatureTable实例添加在线图层

        mServiceFeatureTable =new ServiceFeatureTable(getResources().getString(R.string.us_daytime_population_url));

        mFeatureLayer=new FeatureLayer(mServiceFeatureTable);

        mFeatureLayer.setOpacity(0.8f);

        mFeatureLayer.setMaxScale(10000);

        SimpleLineSymbol lineSymbol=new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.BLACK, 1);

        SimpleFillSymbol fillSymbol=new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, Color.YELLOW, lineSymbol);

        mFeatureLayer.setRenderer(new SimpleRenderer(fillSymbol));

        map.getOperationalLayers().add(mFeatureLayer);

        mMapView.setViewpointCenterAsync(new Point(-11000000,5000000, SpatialReferences.getWebMercator()),100000000);

3.3.添加搜索框

在res文件夹下添加searchable.xml

<?xml version="1.0" encoding="utf-8"?>

<searchable xmlns:android="http://schemas.android.com/apk/res/android"

            android:label="@string/app_name"

            android:hint="@string/search_hint" >

</searchable>

在menu文件夹下创建menu_main.xml

<menu 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"

      tools:context=".MainActivity">

    <item

            android:id="@+id/action_search"

            android:title="@string/action_search"

            app:actionViewClass="androidx.appcompat.widget.SearchView"

            app:showAsAction="ifRoom" />

</menu>

在AndriodManifest.xml中的application中添加

        <activity

                android:name=".MainActivity"

                android:label="@string/app_name"

                android:launchMode="singleTop">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

            <intent-filter>

                <action android:name="android.intent.action.SEARCH" />

            </intent-filter>

            <meta-data

                    android:name="android.app.searchable"

                    android:resource="@xml/searchable" />

        </activity>

3.4.重写onCreateOptionsMenu（）函数

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.menu_main, menu);

        // get the SearchView and set the searchable configuration

        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);

        SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();

        // assumes current activity is the searchable activity

        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

        searchView.setIconifiedByDefault(false);

        return true;

    }

3.5.重写onNewIntent（）函数

    @Override

    protected void onNewIntent(Intent intent) {

        setIntent(intent);

        if (Intent.ACTION_SEARCH.equals(intent.getAction())){

            String searchString=intent.getStringExtra(SearchManager.QUERY);

            searchForState(searchString);

        }

    }

    private void searchForState(String searchString) {

        mFeatureLayer.clearSelection();

        QueryParameters query = new QueryParameters();

        query.setWhereClause(searchString.toUpperCase());

        final ListenableFuture<FeatureQueryResult> future = mServiceFeatureTable.queryFeaturesAsync(query);

        future.addDoneListener(()->{

            try {

                FeatureQueryResult result=future.get();

                Iterator<Feature> resultIterator=result.iterator();

                int size=0;

                for (int i=0;resultIterator.hasNext();i++){

                    Feature feature =resultIterator.next();

                    Envelope envelope=feature.getGeometry().getExtent();

                    mMapView.setViewpointGeometryAsync(envelope,10);

                    mFeatureLayer.selectFeature(feature);

                    size++;

                }

                if (size>0){

                    Toast.makeText(this,"Found : "+size+"  record(s)",Toast.LENGTH_LONG).show();

                } else {

                    Toast.makeText(this,"No states found with name: "+searchString,Toast.LENGTH_LONG).show();

                }

            }catch (Exception e){

                String error = "Feature search failed for: " + searchString + ". Error: " + e.getMessage();

                Toast.makeText(this, error, Toast.LENGTH_LONG).show();

                Log.e("Search for states error :", error);

            }

        });

    }

3.6.编译测试

4.完整代码

4.1.资源文件

strings.xml文件：

<resources>

    <string name="app_name">EX04</string>

    <string name="sample_service_url">https://sampleserver6.arcgisonline.com/arcgis/rest/services/Recreation/FeatureServer/0</string>

    <string name="API_KEY">YOU_ArcGIS_API_KEY</string>

    <string name="us_daytime_population_url">https://services.arcgis.com/jIL9msH9OI208GCb/arcgis/rest/services/USA_Daytime_Population_2016/FeatureServer/0</string>

    <string name="action_search">Search</string>

    <string name="search_hint">Type search opinions</string>

</resources>

searchable.xml文件：

<?xml version="1.0" encoding="utf-8"?>

<searchable xmlns:android="http://schemas.android.com/apk/res/android"

            android:label="@string/app_name"

            android:hint="@string/search_hint" >

</searchable>

menu_main.xml文件：

<menu 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"

      tools:context=".MainActivity">

    <item

            android:id="@+id/action_search"

            android:title="@string/action_search"

            app:actionViewClass="androidx.appcompat.widget.SearchView"

            app:showAsAction="ifRoom" />

</menu>

activity_main.xml文件：

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout

        xmlns:android="http://schemas.android.com/apk/res/android"

        xmlns:tools="http://schemas.android.com/tools"

        xmlns:app="http://schemas.android.com/apk/res-auto"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        tools:context=".MainActivity">

    <com.esri.arcgisruntime.mapping.view.MapView

            android:id="@+id/mapView"

            android:layout_height="fill_parent"

            android:layout_width="fill_parent"

            tools:ignore="MissingConstraints">

    </com.esri.arcgisruntime.mapping.view.MapView>

</androidx.constraintlayout.widget.ConstraintLayout>

AndroidManifest.xml文件：

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

          package="com.example.ex04">

    <uses-permission android:name="android.permission.INTERNET"/>

    <uses-feature

            android:glEsVersion="0x00020000"

            android:required="true"/>

    <application

            android:allowBackup="true"

            android:icon="@mipmap/ic_launcher"

            android:label="@string/app_name"

            android:roundIcon="@mipmap/ic_launcher_round"

            android:supportsRtl="true"

            android:theme="@style/AppTheme">

        <activity

                android:name=".MainActivity"

                android:label="@string/app_name"

                android:launchMode="singleTop">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

            <intent-filter>

                <action android:name="android.intent.action.SEARCH" />

            </intent-filter>

            <meta-data

                    android:name="android.app.searchable"

                    android:resource="@xml/searchable" />

        </activity>

    </application>

</manifest>

4.2.代码文件

MainActivity.java文件：

package com.example.ex04;

import android.app.DownloadManager;

import android.app.SearchManager;

import android.content.Context;

import android.content.Intent;

import android.graphics.Color;

import android.text.method.ScrollingMovementMethod;

import android.util.Log;

import android.view.Menu;

import android.view.MotionEvent;

import android.view.View;

import androidx.appcompat.widget.SearchView;

import android.widget.TextView;

import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;

import com.esri.arcgisruntime.concurrent.ListenableFuture;

import com.esri.arcgisruntime.data.Feature;

import com.esri.arcgisruntime.data.FeatureQueryResult;

import com.esri.arcgisruntime.data.QueryParameters;

import com.esri.arcgisruntime.data.ServiceFeatureTable;

import com.esri.arcgisruntime.geometry.Envelope;

import com.esri.arcgisruntime.geometry.Point;

import com.esri.arcgisruntime.geometry.SpatialReference;

import com.esri.arcgisruntime.geometry.SpatialReferences;

import com.esri.arcgisruntime.layers.FeatureLayer;

import com.esri.arcgisruntime.mapping.ArcGISMap;

import com.esri.arcgisruntime.mapping.BasemapStyle;

import com.esri.arcgisruntime.mapping.GeoElement;

import com.esri.arcgisruntime.mapping.Viewpoint;

import com.esri.arcgisruntime.mapping.view.Callout;

import com.esri.arcgisruntime.mapping.view.DefaultMapViewOnTouchListener;

import com.esri.arcgisruntime.mapping.view.IdentifyLayerResult;

import com.esri.arcgisruntime.mapping.view.MapView;

import com.esri.arcgisruntime.symbology.SimpleFillSymbol;

import com.esri.arcgisruntime.symbology.SimpleLineSymbol;

import com.esri.arcgisruntime.symbology.SimpleRenderer;

import java.text.SimpleDateFormat;

import java.util.*;

import java.util.concurrent.FutureTask;

public class MainActivity extends AppCompatActivity {

    private MapView mMapView;

    private Callout mCallout;

    private ServiceFeatureTable mServiceFeatureTable;

    private FeatureLayer mFeatureLayer;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ArcGISRuntimeEnvironment.setApiKey(getResources().getString(R.string.API_KEY));

        mMapView=findViewById(R.id.mapView);

        final ArcGISMap map =new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);

        mMapView.setMap(map);

//        mMapView.setViewpoint(new Viewpoint(34.057386,-117.191455,10000000));

//        mCallout=mMapView.getCallout();

//        mServiceFeatureTable=new ServiceFeatureTable(getResources().getString(R.string.sample_service_url));

//        final FeatureLayer featureLayer=new FeatureLayer(mServiceFeatureTable);

//        map.getOperationalLayers().add(featureLayer);

        mServiceFeatureTable =new ServiceFeatureTable(getResources().getString(R.string.us_daytime_population_url));

        mFeatureLayer=new FeatureLayer(mServiceFeatureTable);

        mFeatureLayer.setOpacity(0.8f);

        mFeatureLayer.setMaxScale(10000);

        SimpleLineSymbol lineSymbol=new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.BLACK, 1);

        SimpleFillSymbol fillSymbol=new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, Color.YELLOW, lineSymbol);

        mFeatureLayer.setRenderer(new SimpleRenderer(fillSymbol));

        map.getOperationalLayers().add(mFeatureLayer);

        mMapView.setViewpointCenterAsync(new Point(-11000000,5000000, SpatialReferences.getWebMercator()),100000000);

        mCallout=mMapView.getCallout();

        mMapView.setOnTouchListener(new DefaultMapViewOnTouchListener(this,mMapView){

            @Override

            public boolean onSingleTapConfirmed(MotionEvent e) {

                if (mCallout.isShowing()){

                    mCallout.dismiss();

                }

                final android.graphics.Point screenPoint =new android.graphics.Point(Math.round(e.getX()),Math.round(e.getY()));

                int tolerance = 10;

                final ListenableFuture<IdentifyLayerResult> identifyLayerResultListenableFuture=

                        mMapView.identifyLayerAsync(mFeatureLayer,screenPoint,tolerance,false,1);

                identifyLayerResultListenableFuture.addDoneListener(()->{

                    try {

                        IdentifyLayerResult identifyLayerResult=identifyLayerResultListenableFuture.get();

                        TextView calloutContent = new TextView(getApplicationContext());

                        calloutContent.setTextColor(Color.BLACK);

                        calloutContent.setSingleLine(false);

                        calloutContent.setVerticalScrollBarEnabled(true);

                        calloutContent.setScrollBarStyle(View.SCROLLBARS_INSIDE_INSET);

                        calloutContent.setMovementMethod(new ScrollingMovementMethod());

                        calloutContent.setLines(identifyLayerResult.getElements().get(0).getAttributes().size());

                        for (GeoElement element:identifyLayerResult.getElements()){

                            Feature feature =(Feature) element;

                            Map<String,Object> attr =feature.getAttributes();

                            Set<String> keys=attr.keySet();

                            for (String key:keys){

                                Object value =attr.get(key);

                                if (value instanceof GregorianCalendar){

                                    SimpleDateFormat simpleDateFormat=new SimpleDateFormat("dd-MMM-yyyy", Locale.US);

                                    value=simpleDateFormat.format(((GregorianCalendar) value).getTime());

                                }

                                calloutContent.append(key+" | "+value+"\n");

                            }

                            Envelope envelope=feature.getGeometry().getExtent();

                            mMapView.setViewpointGeometryAsync(envelope,10);

                            mCallout.setLocation(envelope.getCenter());

                            mCallout.setContent(calloutContent);

                            mCallout.show();

                        }

                    }catch (Exception e1){

                        Log.e(getResources().getString(R.string.app_name),"Select feature fail : "+e1.getMessage());

                    }

                });

                return super.onSingleTapConfirmed(e);

            }

        });

    }

    @Override

    protected void onNewIntent(Intent intent) {

        setIntent(intent);

        if (Intent.ACTION_SEARCH.equals(intent.getAction())){

            String searchString=intent.getStringExtra(SearchManager.QUERY);

            searchForState(searchString);

        }

    }

    private void searchForState(String searchString) {

        mFeatureLayer.clearSelection();

        QueryParameters query = new QueryParameters();

        query.setWhereClause(searchString.toUpperCase());

        final ListenableFuture<FeatureQueryResult> future = mServiceFeatureTable.queryFeaturesAsync(query);

        future.addDoneListener(()->{

            try {

                FeatureQueryResult result=future.get();

                Iterator<Feature> resultIterator=result.iterator();

                int size=0;

                for (int i=0;resultIterator.hasNext();i++){

                    Feature feature =resultIterator.next();

                    Envelope envelope=feature.getGeometry().getExtent();

                    mMapView.setViewpointGeometryAsync(envelope,10);

                    mFeatureLayer.selectFeature(feature);

                    size++;

                }

                if (size>0){

                    Toast.makeText(this,"Found : "+size+"  record(s)",Toast.LENGTH_LONG).show();

                } else {

                    Toast.makeText(this,"No states found with name: "+searchString,Toast.LENGTH_LONG).show();

                }

            }catch (Exception e){

                String error = "Feature search failed for: " + searchString + ". Error: " + e.getMessage();

                Toast.makeText(this, error, Toast.LENGTH_LONG).show();

                Log.e("Search for states error :", error);

            }

        });

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.menu_main, menu);

        // get the SearchView and set the searchable configuration

        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);

        SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();

        // assumes current activity is the searchable activity

        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));

        searchView.setIconifiedByDefault(false);

        return true;

    }

    @Override

    protected void onPause() {

        mMapView.pause();

        super.onPause();

    }

    @Override

    protected void onResume() {

        super.onResume();

        mMapView.resume();

    }

    @Override protected void onDestroy() {

        mMapView.dispose();

        super.onDestroy();

    }

}

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