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>
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();
}
}
