Android - 定位資訊(GPS)相關類別使用說明
Android 開發筆記 - 透過 Google Maps API 畫出 GPS 路徑
[Android] Google地圖標誌
Android - 定位資訊(GPS)相關類別使用說明
Stop Location Listener in Android
看了那麼多
我們來練習一下
GoogleMapTrackTest.class
package com.example.googlemaptracktest;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.MapActivity;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.Projection;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.view.Menu;
import android.widget.LinearLayout;
import android.widget.Toast;
import android.widget.ZoomControls;
public class GoogleMapTrackTest extends MapActivity {
private MapController mapController = null;
private MapView mMapview = null;
private ZoomControls myZoom = null;
private Drawable startdrawable = null;
private Drawable enddrawable = null;
private MapItemizedOverlay mymapoverlay = null;
private boolean firstLocation = true;
GeoPoint startPoint = null;
private LocationManager mLocationManager = null;
private String strLocationPrivider = "";
private Location mLocation = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
LinearLayout maplinearlayout;
maplinearlayout = (LinearLayout) findViewById(R.id.zoomview);
mMapview = (MapView) findViewById(R.id.mapview);
myZoom = (ZoomControls) (mMapview).getZoomControls();
mapController = mMapview.getController();
maplinearlayout.addView(myZoom);
startdrawable = this.getResources().getDrawable(R.drawable.b1);// 指定標誌圖示
enddrawable = this.getResources().getDrawable(R.drawable.ic_launcher);
mymapoverlay = new MapItemizedOverlay(startdrawable, mMapview);
// Location
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)
|| mLocationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
Criteria mCriteria01 = new Criteria();
mCriteria01.setAccuracy(Criteria.ACCURACY_FINE);
mCriteria01.setAltitudeRequired(false);
mCriteria01.setBearingRequired(false);
mCriteria01.setCostAllowed(true);
mCriteria01.setPowerRequirement(Criteria.POWER_LOW);
strLocationPrivider = mLocationManager.getBestProvider(mCriteria01, true);
mLocation = mLocationManager
.getLastKnownLocation(strLocationPrivider);
// Initialize the location fields
if (mLocation != null) {
int lat = (int) (mLocation.getLatitude());
int lng = (int) (mLocation.getLongitude());
Toast.makeText(GoogleMapTrackTest.this,
String.valueOf(lat) + "," + String.valueOf(lng),
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(GoogleMapTrackTest.this,
"Location not available", Toast.LENGTH_SHORT).show();
mMapview.getController().setCenter(new GeoPoint(24778289, 120988108));
mapController.setZoom(14);
}
}
// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location
// provider.
int lat = (int) (location.getLatitude() * 1e6);
int lng = (int) (location.getLongitude() * 1e6);
GeoPoint addPoint = new GeoPoint(lat, lng); // 指定位置
if (firstLocation == true) {
Toast.makeText(GoogleMapTrackTest.this,
String.valueOf(lat) + "," + String.valueOf(lng),
Toast.LENGTH_SHORT).show();
firstLocation = false;
startPoint = addPoint;
// 加入經緯度
OverlayItem myoverlayitem = new OverlayItem(addPoint, null, null);
mymapoverlay.addOverlayItem(myoverlayitem);
mMapview.getOverlays().add(mymapoverlay);
// 依照mypoint設定之經緯度為中心點
mymapoverlay = new MapItemizedOverlay(enddrawable, mMapview);
// 換圖示
} else {
Toast.makeText(GoogleMapTrackTest.this,
String.valueOf(lat) + "," + String.valueOf(lng),
Toast.LENGTH_SHORT).show();
OverlayItem myoverlayitem = new OverlayItem(addPoint, null, null);
mymapoverlay.addOverlayItem(myoverlayitem, startPoint);
mMapview.getOverlays().add(mymapoverlay);
}
mMapview.getController().setCenter(addPoint);
mapController.setZoom(14);
}
public void onStatusChanged(String provider, int status,
Bundle extras) {
}
public void onProviderEnabled(String provider) {
Toast.makeText(GoogleMapTrackTest.this, " onProviderEnabled ",
Toast.LENGTH_SHORT).show();
}
public void onProviderDisabled(String provider) {
Toast.makeText(GoogleMapTrackTest.this, " onProviderDisabled ",
Toast.LENGTH_SHORT).show();
}
};
// Register the listener with the Location Manager to receive location
// updates
mLocationManager.requestLocationUpdates(strLocationPrivider, 0, 0,
locationListener);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}MapItemizedOverlay.class
package com.example.googlemaptracktest;
import java.util.ArrayList;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.Projection;
public class MapItemizedOverlay extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> gList = new ArrayList<OverlayItem>();
private ArrayList<GeoPoint> gListGeoPoint = new ArrayList<GeoPoint>();
private Drawable marker = null;
private Context context = null;
private boolean firstmove = true;
private MapView myMapView = null;
// Projection myProjection = null;
// Point mapViewOut = null;
public MapItemizedOverlay(Drawable arg0, MapView mMapview) {
super(arg0);
// TODO Auto-generated constructor stub
marker = arg0;
context = mMapview.getContext();
myMapView = mMapview;
}
public void addOverlayItem(OverlayItem oItem) {
gList.clear();
gList.add(oItem);
populate();
}
public void addOverlayItem(OverlayItem oItem, GeoPoint startPoint) {
if (firstmove == true) {
gListGeoPoint.add(startPoint);
firstmove = false;
}
gListGeoPoint.add(oItem.getPoint());
gList.clear();
gList.add(oItem);
populate();
}
@Override
protected OverlayItem createItem(int arg0) {
// TODO Auto-generated method stub
return gList.get(arg0);
}
public void draw(Canvas canvas, com.google.android.maps.MapView mapview,
boolean shadow) {
super.draw(canvas, mapview, shadow);
boundCenterBottom(marker);
Projection myProjection = myMapView.getProjection();
Point out;
Path myPath = new Path();
for (int i = 0; i < gListGeoPoint.size(); i++) {
GeoPoint in = new GeoPoint(gListGeoPoint.get(i).getLatitudeE6(),
gListGeoPoint.get(i).getLongitudeE6());
out = new Point();
myProjection.toPixels(in, out);
if (i == 0) {
myPath.moveTo(out.x, out.y);
} else {
myPath.lineTo(out.x, out.y);
myPath.setLastPoint(out.x, out.y);
}
}
Paint myPaint = new Paint();
myPaint.setColor(Color.RED);
myPaint.setStyle(Paint.Style.STROKE);
myPaint.setStrokeWidth(2);
myPaint.setAlpha(70);
canvas.drawPath(myPath, myPaint);
}
@Override
public int size() {
// TODO Auto-generated method stub
return gList.size();
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.googlemaptracktest"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />
<permission
android:name="com.example.googlemaptracktest.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!--
The following two permissions are not required to use
Google Maps Android API v2, but are recommended.
-->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<application
android:allowBackup="true"
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="com.example.googlemaptracktest.GoogleMapTrackTest"
android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/zoomview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<com.google.android.maps.MapView
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="04PWltFqrvM9KGKh8Dvlh3hN73M_xFBck0zmI5w"
android:clickable="true"
android:enabled="true"
/>
</LinearLayout>
Result:
我拿了我的實機測試
GPS抓得很慢!!!!!!
所以要等一下
僅供參考喽!
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