Mode : Street View
Mode : Satellite View
功能描述
1. 可使用 GPS 衛星定位(GPS Provider)或無線網路定位(Network Provider)
2. 使用 GoogleMap 顯示即時所在位置
3. 顯示模式
(a) 街道(Street View)
(b) 衛星(Satellite View)
4. 顯示所在位置的地址
5. 顯示資訊：
(a) Location Counts
(b) Location Provider
(c) 海拔高度 (Altitude)
(d) 運動方向 (Bearing)
(e) 速度(km/h) (Speed)
<TrackMyPosition.java>
1: package com.android.trackmylocation;
2:
3: import java.util.List;
4: import java.util.Locale;
5:
6: import com.google.android.maps.GeoPoint;
7: import com.google.android.maps.MapActivity;
8: import com.google.android.maps.MapController;
9: import com.google.android.maps.MapView;
10: import com.google.android.maps.MyLocationOverlay;
11: import com.google.android.maps.Overlay;
12:
13: import android.app.AlertDialog;
14: import android.content.Context;
15: import android.content.DialogInterface;
16: import android.content.Intent;
17: import android.location.Address;
18: import android.location.Criteria;
19: import android.location.Geocoder;
20: import android.location.Location;
21: import android.location.LocationListener;
22: import android.location.LocationManager;
23: import android.os.Bundle;
24: import android.provider.Settings;
25: import android.view.View;
26: import android.view.View.OnClickListener;
27: import android.view.WindowManager;
28: import android.widget.Button;
29: import android.widget.TextView;
30: import android.widget.Toast;
31:
32: public class TrackMyLocation extends MapActivity implements LocationListener {
33: private LocationManager locationManager;
34: private MapView mapView;
35: private MapController mapController;
36: private MyLocationOverlay mylayer;
37: private Button btnStreet, btnSatellite, btnExit;
38: private TextView tv00, tv01;
39: private int cnt;
40: private boolean enableTool;
41: private String strCnt, provider, providerFlag, altitude, bearing, speed;
42: private Criteria criteria = new Criteria();
43:
44: /** Called when the activity is first created. */
45: @Override
46: public void onCreate(Bundle savedInstanceState)
47: {
48: super.onCreate(savedInstanceState);
49: setContentView(R.layout.main);
50: getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
51:
52: findViews();
53: findControl();
54: setButtonListeners();
55: }
56:
57: private void init()
58: {
59: if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER))
60: {
61: new AlertDialog.Builder(TrackMyLocation.this).setTitle("地圖工具").setMessage("您尚未開啟定位服務，要前往設定頁面啟動定位服務嗎？")
62: .setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener()
63: {
64: public void onClick(DialogInterface dialog, int which)
65: {
66: startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
67: }
68: }).setNegativeButton("Cancel", new DialogInterface.OnClickListener()
69: {
70: public void onClick(DialogInterface dialog, int which)
71: {
72: Toast.makeText(TrackMyLocation.this, "未開啟定位服務，無法使用本工具!!", Toast.LENGTH_SHORT).show();
73: }
74: }).show();
75: }
76: else
77: {
78: enableMyLocation();
79: enableTool = true;
80: }
81: }
82:
83: private void findViews(){
84: mapView = (MapView) findViewById(R.id.gmap);
85: btnStreet = (Button) findViewById(R.id.streetViewBtn);
86: btnSatellite = (Button) findViewById(R.id.satelliteViewBtn);
87: btnExit = (Button) findViewById(R.id.exitBtn);
88: tv00 = (TextView) findViewById(R.id.textView00);
89: tv01 = (TextView) findViewById(R.id.textView01);
90: }
91:
92: private void findControl()
93: {
94: mapView.setSatellite(false);
95: mapView.setBuiltInZoomControls(true);
96: mapController = mapView.getController();
97: mapController.setZoom(18);
98: locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
99:
100: criteria.setAccuracy(Criteria.ACCURACY_FINE);
101: criteria.setAltitudeRequired(true);
102: criteria.setBearingRequired(true);
103: criteria.setCostAllowed(false);
104: criteria.setSpeedRequired(true);
105: criteria.setPowerRequirement(Criteria.POWER_LOW);
106: locationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER,
107: 5000,
108: 0,
109: TrackMyLocation.this);
110: locationManager.requestLocationUpdates( LocationManager.NETWORK_PROVIDER,
111: 5000,
112: 0,
113: TrackMyLocation.this);
114: }
115:
116: private void setButtonListeners(){
117: btnStreet.setOnClickListener(new View.OnClickListener() {
118: public void onClick(View v) {
119: mapView.setSatellite(false);
120: }
121: });
122:
123: btnSatellite.setOnClickListener(new View.OnClickListener() {
124: public void onClick(View v) {
125: mapView.setSatellite(true);
126: }
127: });
128:
129: btnExit.setOnClickListener(new OnClickListener(){
130: public void onClick(View v) {
131: android.os.Process.killProcess(android.os.Process.myPid());
132: }
133: });
134: }
135:
136: private void enableMyLocation()
137: {
138: List<Overlay> overlays = mapView.getOverlays();
139: mylayer = new MyLocationOverlay(this, mapView);
140: mylayer.enableCompass();
141: mylayer.enableMyLocation();
142: mylayer.runOnFirstFix(new Runnable()
143: {
144: public void run()
145: {
146: mapController.animateTo(mylayer.getMyLocation());
147: }
148: });
149: overlays.add(mylayer);
150: }
151:
152: @Override
153: protected void onResume()
154: {
155: super.onResume();
156: if (enableTool)
157: {
158: locationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER,
159: 5000,
160: 0,
161: TrackMyLocation.this);
162: locationManager.requestLocationUpdates( LocationManager.NETWORK_PROVIDER,
163: 5000,
164: 0,
165: TrackMyLocation.this);
166:
167: mylayer.enableMyLocation();
168: mylayer.enableCompass();
169: }
170: else
171: {
172: init();
173: }
174: }
175:
176: @Override
177: protected void onPause()
178: {
179: super.onPause();
180: if (enableTool)
181: {
182: locationManager.removeUpdates(TrackMyLocation.this);
183: mylayer.disableCompass();
184: mylayer.disableMyLocation();
185: }
186: }
187:
188: @Override
189: protected boolean isRouteDisplayed()
190: {
191: return false;
192: }
193:
194:
195: public void onLocationChanged(Location location){
196: provider = locationManager.getBestProvider(criteria, true);
197: if ( provider.equals(String.valueOf("gps")))
198: {
199: providerFlag = "gps";
200: }
201: else
202: {
203: providerFlag = "network";
204: }
205: cnt = cnt + 1;
206: strCnt = String.valueOf(cnt);
207: tv00.setText(getAddressByLocation(location));
208: altitude = String.valueOf(location.getAltitude());
209: speed = String.valueOf(location.getSpeed()*3.6);
210: bearing = String.valueOf(location.getBearing());
211: tv01.setText( "("+strCnt+")"+
212: " 訊號:"+providerFlag+
213: " 海拔:"+altitude+
214: " 方向:"+bearing+
215: " 時速:"+speed);
216: GeoPoint p = new GeoPoint( (int) (location.getLatitude() * 1000000),
217: (int) (location.getLongitude() * 1000000));
218: mapController.animateTo(p);
219: }
220:
221: public void onProviderDisabled(String provider)
222: {
223:
224: }
225:
226: public void onProviderEnabled(String provider)
227: {
228:
229: }
230:
231: public void onStatusChanged(String provider, int status, Bundle extras)
232: {
233:
234: }
235:
236: public String getAddressByLocation(Location location) {
237: String returnAddress = "";
238: try {
239: if (location != null) {
240: Double longitude = location.getLongitude();
241: Double latitude = location.getLatitude();
242: Geocoder gc = new Geocoder(this, Locale.TRADITIONAL_CHINESE);
243: List<Address> lstAddress = gc.getFromLocation(latitude, longitude, 1);
244: returnAddress = lstAddress.get(0).getAddressLine(0);
245: }
246: }
247: catch(Exception e) {
248: e.printStackTrace();
249: }
250:
251: return returnAddress;
252: }
253: }
<main.xml>
1: <?xml version="1.0" encoding="utf-8"?>
2: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3: android:layout_width="fill_parent"
4: android:layout_height="fill_parent"
5: android:orientation="vertical" >
6:
7: <TextView
8: android:id="@+id/textView00"
9: android:layout_width="fill_parent"
10: android:layout_height="wrap_content"
11: android:text="@string/strNull" />
12:
13: <com.google.android.maps.MapView
14: android:id="@+id/gmap"
15: android:layout_width="fill_parent"
16: android:layout_height="fill_parent"
17: android:apiKey="自行申請一組 apiKey"
18: android:layout_weight="1"
19: android:clickable="true" />
20:
21: <LinearLayout
22: android:orientation="horizontal"
23: android:layout_width="fill_parent"
24: android:layout_height="wrap_content"
25: android:layout_weight="0">
26:
27: <Button
28: android:id="@+id/streetViewBtn"
29: android:layout_width="wrap_content"
30: android:layout_height="wrap_content"
31: android:text="@string/strStreet" />
32:
33: <Button
34: android:id="@+id/satelliteViewBtn"
35: android:layout_width="wrap_content"
36: android:layout_height="wrap_content"
37: android:text="@string/strSatellite" />
38:
39: <Button
40: android:id="@+id/exitBtn"
41: android:layout_width="wrap_content"
42: android:layout_height="wrap_content"
43: android:text="@string/strExit" />
44:
45:
46: <TextView
47: android:id="@+id/textView01"
48: android:layout_width="wrap_content"
49: android:layout_height="wrap_content"
50: android:text="@string/strNull" />
51:
52: </LinearLayout>
53:
54: </LinearLayout>
<strings.xml>
1: <?xml version="1.0" encoding="utf-8"?>
2: <resources>
3:
4: <string name="hello">Hello World, TrackMyLocation!</string>
5: <string name="app_name">定位追蹤</string>
6: <string name="strStreet">街道</string>
7: <string name="strSatellite">衛星</string>
8: <string name="strExit">離開</string>
9: <string name="strNull"></string>
10:
11: </resources>
<AndroidManifest.xml>
1: <?xml version="1.0" encoding="utf-8"?>
2: <manifest xmlns:android="http://schemas.android.com/apk/res/android"
3: package="com.android.trackmylocation"
4: android:versionCode="1"
5: android:versionName="1.0" >
6:
7: <uses-sdk android:minSdkVersion="7" />
8: <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
9: <uses-permission android:name="android.permission.INTERNET"/>
10: <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
11:
12: <application
13: android:icon="@drawable/gps"
14: android:label="@string/app_name" >
15: <activity
16: android:name=".TrackMyLocation"
17: android:label="@string/app_name" >
18: <intent-filter>
19: <action android:name="android.intent.action.MAIN" />
20:
21: <category android:name="android.intent.category.LAUNCHER" />
22: </intent-filter>
23: </activity>
24: <uses-library android:name="com.google.android.maps"/>
25: </application>
26:
27: </manifest>
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