package com.SoAi.Activity;
import java.util.List;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.Menu;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.Projection;
public class MainActivity extends MapActivity {
private GeoPoint point ;
private Projection projection;
private List<Overlay> overlays;
private GeoPoint beginGeoPoint = null;
private GeoPoint endGeoPoint= null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LocationManager locationManager = (LocationManager) MainActivity.this
.getSystemService(Context.LOCATION_SERVICE);
MapView mMapView = (MapView) findViewById(R.id.mapsView);
mMapView.setBuiltInZoomControls(true);//設置启用內置的縮放控件
// mMapView.setTraffic(true); //設置为交通模式。
// mMapView.setSatellite(true); //設置为衛星模式。
// mMapView.setStreetView(true); //設置为街道模式。
// 得到mMapView的控制權,可 以用它控制和驅動平移和縮放
MapController mMapController = mMapView.getController();
overlays = mMapView.getOverlays();
projection = mMapView.getProjection();
// 創建一個Criteria對象
Criteria criteria = new Criteria();
// 設置粗略精確度
criteria.setAccuracy(Criteria.ACCURACY_COARSE);
// 設置是否需要返回海拔信息
criteria.setAltitudeRequired(false);
// 設置是否需要返回方位信息
criteria.setBearingRequired(false);
// 設置是否允許付費服務
criteria.setCostAllowed(true);
// 設置電量消耗等級
criteria.setPowerRequirement(Criteria.POWER_HIGH);
// 設置是否需要返回速度信息
criteria.setSpeedRequired(false);
// 根據設置的Criteria對象，獲取最符合此標准的provider對象
String currentProvider = locationManager
.getBestProvider(criteria, true);
Location location = locationManager
.getLastKnownLocation(currentProvider);
// 参數1、location provider LocationManager.GPS_PROVIDER 2、最少多少毫秒更新一下定位，3、最短多少米更新一下位置，4、監聽 事件
locationManager.requestLocationUpdates(
currentProvider, 6000, 500,
new TestLocationListener());
//point = new GeoPoint((int) (22.679836* 1000000), (int) (113.454567* 1000000));
point = new GeoPoint((int)(location.getLatitude()*1e6),(int)(location.getLongitude()*1e6));
mMapController.setCenter(point);
//mMapController.animateTo(point);
mMapController.setZoom(15);
//添加Overlay，用於顯示標注信息
MyLocationOverlay myLocationOverlay = new MyLocationOverlay();
overlays.add(myLocationOverlay);
}
//該類的對象用戶在地圖上繪制線條
class LineOverlay extends Overlay {
private GeoPoint begin;
private GeoPoint end;
public LineOverlay() {
}
public LineOverlay(GeoPoint begin, GeoPoint end) {
this.begin = begin;
this.end = end;
}
public void draw(Canvas canvas, MapView mapv, boolean shadow) {
super.draw(canvas, mapv, shadow);
Paint paint = new Paint();
paint.setColor(Color.BLUE);
paint.setStyle(Paint.Style.FILL_AND_STROKE);
paint.setStrokeWidth(2);
Point beginPoint = new Point();
Point endPoint = new Point();
Path path = new Path();
projection.toPixels(beginGeoPoint, beginPoint);
projection.toPixels(endGeoPoint, endPoint);
path.moveTo(endPoint.x, endPoint.y);
path.lineTo(beginPoint.x, beginPoint.y);
canvas.drawPath(path, paint);
}
}
//該類的對象的作用是在地圖上繪制圖標
class PointOverlay extends Overlay {
private GeoPoint geoPoint;
public PointOverlay() {
}
public PointOverlay(GeoPoint geoPoint) {
this.geoPoint = geoPoint;
}
public void draw(Canvas canvas, MapView mapv, boolean shadow) {
super.draw(canvas, mapv, shadow);
Point point = new Point();
projection.toPixels(geoPoint, point);
Bitmap bmp = BitmapFactory.decodeResource(getResources(),
R.drawable.icon_locr_light);
Paint paint = new Paint();
canvas.drawBitmap(bmp, point.x, point.y, paint);
}
}
//繪制定位圖標
class MyLocationOverlay extends Overlay
{
@Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when)
{
super.draw(canvas, mapView, shadow);
Paint paint = new Paint();
Point myScreenCoords = new Point();
// 將經緯度轉換成實際屏幕坐標
projection.toPixels(point, myScreenCoords);
paint.setStrokeWidth(1);
paint.setARGB(255, 255, 0, 0);
paint.setStyle(Paint.Style.STROKE);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.icon_locr_light);
canvas.drawBitmap(bmp, myScreenCoords.x, myScreenCoords.y, paint);
//canvas.drawText("廣州歡迎你", myScreenCoords.x, myScreenCoords.y, paint);
return true;
}
}
//監聽事件，當移動超過指定的時間或距離調用
private class TestLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
if(endGeoPoint == null){
beginGeoPoint = point;
endGeoPoint = new GeoPoint((int)(location.getLatitude()*1e6),(int)(location.getLongitude()*1e6));
}else if(endGeoPoint !=null){
beginGeoPoint = endGeoPoint;
endGeoPoint = new GeoPoint((int)(location.getLatitude()*1e6),(int)(location.getLongitude()*1e6));
}
System.out.println(location.getLongitude());
System.out.println(location.getLatitude());
overlays.add(new PointOverlay(beginGeoPoint));
overlays.add(new PointOverlay(endGeoPoint));
overlays.add(new LineOverlay(beginGeoPoint, endGeoPoint));
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
AndroidManifest.xml裏面需要加入權限和library
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.SoAi.Activity"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<!-- 聯網 -->
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"/>
<!-- 定位權限 -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<uses-library android:name="com.google.android.maps"/>
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
XML布局文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.google.android.maps.MapView
android:id="@+id/mapsView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="0pbz1nfRMm_rQhNwDB4hE549_EJ86lD00BUyCNw"
android:enabled="true"
android:clickable="true"
/>
</LinearLayout>
好了，在模擬器裏面查看只需要send一下它的經緯度，手機裏就需要移動至少500M才行，OK！
From:CSDN
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