arcgis for android 学习 (4) 了解mapView的一些方法和事件

 我写了一个示例，用于展示了几个方法和事件的使用。直接在在代码里写了注释，那么直接贴代码。

 

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布局：

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >



    <LinearLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content" >



        <Button

            android:id="@+id/btnZoomOut"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="缩小" />



        <Button

            android:id="@+id/btn1ZoomIn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="放大" />



        <Button

            android:id="@+id/btnLookExtent"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="看范围" />



        <Button

            android:id="@+id/btnToPoint"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="坐标变换" />

    </LinearLayout>



    <LinearLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content" >



        <Button

            android:id="@+id/btnLookCenter"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="看中点坐标" />



        <Button

            android:id="@+id/btnSetCenter"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="设中点坐标为上次单击点" />

    </LinearLayout>



    <!-- MapView layout and initial extent -->



    <com.esri.android.map.MapView

        android:id="@+id/map"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent" >

    </com.esri.android.map.MapView>



</LinearLayout>

代码：

  package com.vir56k.arcgisDemo;

import com.esri.android.map.MapView;

import com.esri.android.map.event.OnLongPressListener;

import com.esri.android.map.event.OnPanListener;

import com.esri.android.map.event.OnPinchListener;

import com.esri.android.map.event.OnSingleTapListener;

import com.esri.android.map.event.OnStatusChangedListener;

import com.esri.android.map.event.OnZoomListener;

import com.esri.android.map.event.OnStatusChangedListener.STATUS;

import com.esri.core.geometry.Envelope;

import com.esri.core.geometry.Geometry;

import com.esri.core.geometry.Point;

import com.esri.core.geometry.Polygon;

import com.vir56k.arcgisDemo.mapviewDetail.R;

import android.app.Activity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;



public class mapviewDetailActivity extends Activity {

    Button m_btnZoomOut;

    Button btn1ZoomIn;

    Button btnLookCenter;

    Button btnToPoint;

    Button btnLookExtent;

    Button btnSetCenter;

    MapView mMapView;

    

    Point m_lastClickPoint;//上次单击的点

    // 图层服务的地址

    final String URL_STREET_COLD = "http://cache1.arcgisonline.cn/ArcGIS/rest/services/ChinaOnlineStreetCold/MapServer";



    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);



        // 处理放大按钮的事件

        m_btnZoomOut = (Button) findViewById(R.id.btnZoomOut);

        m_btnZoomOut.setOnClickListener(new OnClickListener() {



            @Override

            public void onClick(View arg0) {

                if (mMapView.isLoaded()) {

                    mMapView.zoomout();

                }

            }

        });



        // 处理缩小按钮的事件

        btn1ZoomIn = (Button) findViewById(R.id.btn1ZoomIn);

        btn1ZoomIn.setOnClickListener(new OnClickListener() {



            @Override

            public void onClick(View arg0) {

                if (mMapView.isLoaded()) {

                    mMapView.zoomin();

                }

            }

        });



        // 查看地图中心点坐标

        btnLookCenter = (Button) findViewById(R.id.btnLookCenter);

        btnLookCenter.setOnClickListener(new OnClickListener() {



            @Override

            public void onClick(View arg0) {

                if (mMapView.isLoaded()) {

                    /*

                     * Point getCenter() Returns the center of the MapView as an

                     * ArcGIS geometry Point.

                     */

                    Point p = mMapView.getCenter();

                    AlertMsg("地图中心点坐标(ArcGIS几何点)是：(%s,%s)", p.getX(), p.getY());

                }

            }

        });



        // 查看地图范围

        btnLookExtent = (Button) findViewById(R.id.btnLookExtent);

        btnLookExtent.setOnClickListener(new OnClickListener() {



            @Override

            public void onClick(View arg0) {

                if (mMapView.isLoaded()) {

                    /*

                     * Polygon getExtent() Returns a polygon comprising of four

                     * corners of map in map coordinates.

                     */

                    Polygon p = mMapView.getExtent();

                    int dimension = p.getDimension();

                    Geometry.Type type = p.getType();



                    AlertMsg("查看地图范围dimension=%s,typ=%s", dimension, type.a());

                }

            }

        });    

        

    

        // btnSetCenter

        btnSetCenter = (Button) findViewById(R.id.btnSetCenter);

        btnSetCenter.setOnClickListener(new OnClickListener() {



            @Override

            public void onClick(View arg0) {

                if (mMapView.isLoaded()) {

                    Point p = m_lastClickPoint;

                    if(p != null)

                    {

                        mMapView.centerAt(p, true);

                        AlertMsg("设定 地图中点为：  x=%s,y=%s", p.getX(),

                                p.getY());

                    }

                }

            }

        });



        // 坐标变换

        btnToPoint = (Button) findViewById(R.id.btnToPoint);

        btnToPoint.setOnClickListener(new OnClickListener() {



            @Override

            public void onClick(View arg0) {

                if (mMapView.isLoaded()) {

                    /*

                     * Point toMapPoint(float screenx, float screeny) A

                     * convenience method that will convert a device's screen

                     * coordinates to an ArcGIS geometry Point that has the same

                     * spatial coordinate system as the MapView's. Point

                     * toMapPoint(Point src) A convenience method that will

                     * convert a device's screen coordinates into an ArcGIS

                     * geometry Point that has the same spatial coordinate

                     * system as the MapView's. Point toScreenPoint(Point src) A

                     * convenience method that will convert an ArcGIS geometry

                     * Point from the MapView's spatial coordinate system into

                     * the device's screen coordinates.

                     */



                    // AlertMsg("查看地图范围dimension=%s,typ=%s",

                    // dimension,type.a());

                }

            }

        });



        mMapView = (MapView) findViewById(R.id.map);

        mMapView.addLayer(new com.esri.android.map.ags.ArcGISTiledMapServiceLayer(

                URL_STREET_COLD));



        Envelope initextext = new Envelope(12899459.4956466, 4815363.65520802,

                13004178.2243971, 4882704.67712717);



        mMapView.setExtent(initextext);



        // 注册长按 事件

        mMapView.setOnLongPressListener(new OnLongPressListener() {



            @Override

            public void onLongPress(float x, float y) {

                if (mMapView.isLoaded()) {

                    AlertMsg("长按 x=%s,y=%s", x, y);

                }

                ;



            }

        });

        // 注册单击事件

        mMapView.setOnSingleTapListener(new OnSingleTapListener() {



            @Override

            public void onSingleTap(float x, float y) {

                /*

                 * x - the x coordinate of the single tap location in screen

                 * pixels. y - the y coordinate of the single tap location in

                 * screen pixels.

                 */

                // x，y.都是屏幕像素坐标点

                if (mMapView.isLoaded()) {

                    AlertMsg("单击，屏幕像素坐标点：  x=%s,y=%s", x, y);



                    Point mapPoint = mMapView.toMapPoint(new Point(x, y));

                    AlertMsg("单击，地图坐标点：  x=%s,y=%s", mapPoint.getX(),

                            mapPoint.getY());

                    

                    m_lastClickPoint = mapPoint;

                    AlertMsg("设定 上次单击的点为：  x=%s,y=%s", mapPoint.getX(),

                            mapPoint.getY());

                }

                ;

            }

        });

        mMapView.setOnPanListener(new OnPanListener() {



            @Override

            public void prePointerUp(float fromx, float fromy, float tox,

                    float toy) {

                // TODO Auto-generated method stub



            }



            @Override

            public void prePointerMove(float fromx, float fromy, float tox,

                    float toy) {

                // TODO Auto-generated method stub



            }



            @Override

            public void postPointerUp(float fromx, float fromy, float tox,

                    float toy) {

                // TODO Auto-generated method stub



            }



            @Override

            public void postPointerMove(float fromx, float fromy, float tox,

                    float toy) {

                // TODO Auto-generated method stub



            }

        });



        mMapView.setOnPinchListener(new OnPinchListener() {



            @Override

            public void prePointersUp(float x1, float y1, float x2, float y2,

                    double factor) {

                // TODO Auto-generated method stub



            }



            @Override

            public void prePointersMove(float x1, float y1, float x2, float y2,

                    double factor) {

                // TODO Auto-generated method stub



            }



            @Override

            public void prePointersDown(float x1, float y1, float x2, float y2,

                    double factor) {

                // TODO Auto-generated method stub



            }



            @Override

            public void postPointersUp(float x1, float y1, float x2, float y2,

                    double factor) {

                // TODO Auto-generated method stub



            }



            @Override

            public void postPointersMove(float x1, float y1, float x2,

                    float y2, double factor) {

                // TODO Auto-generated method stub



            }



            @Override

            public void postPointersDown(float x1, float y1, float x2,

                    float y2, double factor) {

                // TODO Auto-generated method stub



            }

        });



        // 当mapView的状态改变时

        mMapView.setOnStatusChangedListener(new OnStatusChangedListener() {



            @Override

            public void onStatusChanged(Object source, STATUS status) {

                if (status.equals(STATUS.INITIALIZATION_FAILED)) {

                    AlertMsg("mapView的状态改变时:%s", "初始化失败");

                }

                ;



                if (status.equals(STATUS.INITIALIZED)) {

                    AlertMsg("mapView的状态改变时:%s", "初始化完成");

                }

                ;

                if (status.equals(STATUS.LAYER_LOADED)) {

                    AlertMsg("mapView的状态改变时:%s", "图层加载完成");

                }

                ;



                if (status.equals(STATUS.LAYER_LOADING_FAILED)) {

                    AlertMsg("mapView的状态改变时:%s", "图层加载失败");

                }

                ;

            }

        });



        // 当缩放时

        mMapView.setOnZoomListener(new OnZoomListener() {



            @Override

            public void preAction(float pivotX, float pivotY, double factor) {

                // TODO Auto-generated method stub



            }



            @Override

            public void postAction(float pivotX, float pivotY, double factor) {

                AlertMsg("缩放状态变化，factor=:%s", factor);

            }

        });

    }



    private void AlertMsg(String str, Object... arg) {

        String msg = String.format(str, arg);

        Toast.makeText(this, msg,2).show();

        Log.i("AlertMsg", msg);

    }



    @Override

    protected void onDestroy() {

        super.onDestroy();

    }



    @Override

    protected void onPause() {

        super.onPause();

        mMapView.pause();

    }



    @Override

    protected void onResume() {

        super.onResume();

        mMapView.unpause();

    }

}

代码下载