1 public class Main extends Activity implements OnClickListener {
2 private LocationManager locationManager;
3 private Location location;
4 private Criteria criteria;
5 private String provider;
6
7 private TextView tv_Latitude;// 纬度
8 private TextView tv_Longitude;// 经度
9 private TextView tv_High;// 海拔
10 private TextView tv_Direction;// 方向
11 private TextView tv_Speed;// 速度
12 private TextView tv_GpsTime;// 获取的时间
13 private TextView tv_InfoType;// 信息的来源
14 private EditText et_SetTimeSpace;// 设置时间间隔
15
16 private Button manual_btn;
17 private Button settimespace_btn;
18 private Button exit_btn;
19
20 public void onCreate(Bundle savedInstanceState) {
21 super.onCreate(savedInstanceState);
22 setContentView(R.layout.main);
23 setTitle("GPS");
24 // 隐藏输入法
25 getWindow().setSoftInputMode(
26 WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
27 initView();
28 initLocation();
29 }
30
31 // 初始化
32 @SuppressWarnings("static-access")
33 private void initLocation() {
34 // 初始化locationManager：获得系统所提供的location_service
35 locationManager = (LocationManager) getSystemService(this.LOCATION_SERVICE);
36 /**
37 * LocationManager.GPS_PROVIDER
38 *
39 * 精度比较高，但是慢而且消耗电力， 而且可能因为天气原因或者障碍物而无法获取卫星信息，另外设备可能没有GPS模块；
40 * LocationManager.NETWORK_PROVIDER
41 *
42 * 通过网络获取定位信息，精度低，耗电少，获取信息速度较快，不依赖GPS模块。
43 */
44 if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
45 /* 注意：criteria有多种设置 */
46
47 // 第一种：criteria
48 criteria = new Criteria();
49 criteria.setAccuracy(Criteria.ACCURACY_FINE);// 高精度
50 criteria.setAltitudeRequired(true);// 显示海拔
51 criteria.setBearingRequired(true);// 显示方向
52 criteria.setSpeedRequired(true);// 显示速度
53 criteria.setCostAllowed(false);// 不允许有花费
54 criteria.setPowerRequirement(Criteria.POWER_LOW);// 低功耗
55
56 // 第二种：criteria
57 // criteria = new Criteria();
58 // criteria.setAccuracy(Criteria.ACCURACY_FINE);//设置为最大精度
59 // criteria.setAltitudeRequired(false);//不要求海拔信息
60 // criteria.setBearingRequired(false);//不要求方位信息
61 // criteria.setCostAllowed(true);//是否允许付费
62 // criteria.setPowerRequirement(Criteria.POWER_LOW);//对电量的要求
63
64 provider = locationManager.getBestProvider(criteria, true);
65
66 locationManager.requestLocationUpdates(provider, 5000, 10,
67 locationListener);// 位置变化监听,默认5秒一次,距离10米以上
68 } else
69 showInfo(null, -1);
70 }
71
72 /**
73 * 获取GPS相应的数据
74 *
75 * @return
76 */
77 private GPSModel getLastPosition() {
78 GPSModel gpsModel = new GPSModel();
79 location = locationManager.getLastKnownLocation(provider);
80 if (location != null) {
81 gpsModel.Latitude = (double) (location.getLatitude());
82 gpsModel.Longitude = (double) (location.getLongitude());
83 gpsModel.High = location.getAltitude();
84 gpsModel.Direct = location.getBearing();
85 gpsModel.Speed = location.getSpeed();
86
87 Date d = new Date();
88 d.setTime(location.getTime());
89 gpsModel.GpsTime = DateFormat.format("yyyy-MM-dd kk:mm:ss", d)
90 .toString();
91 d = null;
92 }
93 return gpsModel;
94 }
95
96 // 显示信息
97 private void showInfo(GPSModel gpsModel, int infotype) {
98 if (gpsModel == null) {
99 if (infotype == -1) {
100 tv_Latitude.setText("GPS功能已关闭");
101 tv_Longitude.setText("");
102 tv_High.setText("");
103 tv_Direction.setText("");
104 tv_Speed.setText("");
105 tv_GpsTime.setText("");
106 tv_InfoType.setText("");
107 manual_btn.setEnabled(false);
108 settimespace_btn.setEnabled(false);
109 et_SetTimeSpace.setEnabled(false);
110 }
111 } else {
112 double y = gpsModel.Latitude;// 纬度
113 double x = gpsModel.Longitude;// 经度
114 tv_Latitude.setText("纬度：y=" + String.valueOf(y));
115 tv_Longitude.setText("经度：x=" + String.valueOf(x));
116 tv_High.setText(String.format("海拔:%f", gpsModel.High));
117 tv_Direction.setText(String.format("方向:%f", gpsModel.Direct));
118 tv_Speed.setText(String.format("速度:%f", gpsModel.Speed));
119 tv_GpsTime.setText(String.format("GPS时间:%s", gpsModel.GpsTime));
120
121 gpsModel.InfoType = infotype;
122 switch (infotype) {
123 case 1:
124 tv_InfoType.setText("信息来源状态:手动获取更新");
125 break;
126 case 2:
127 tv_InfoType.setText("信息来源状态:位置改变更新");
128 break;
129 }
130 }
131
132 }
133
134 @SuppressWarnings("static-access")
135 @Override
136 public void onClick(View v) {
137 if (v.equals(manual_btn)) {
138 showInfo(getLastPosition(), 1);
139 }
140 if (v.equals(settimespace_btn)) {
141 if (TextUtils.isEmpty(et_SetTimeSpace.getText().toString())) {
142 Toast.makeText(this, "请输入更新时间间隔", Toast.LENGTH_LONG).show();
143 et_SetTimeSpace.requestFocus();
144 return;
145 }
146
147 int timespace = Integer.valueOf(et_SetTimeSpace.getText()
148 .toString()) * 1000;
149 if (locationManager.isProviderEnabled(locationManager.GPS_PROVIDER))
150 locationManager.requestLocationUpdates(provider, timespace, 10,
151 locationListener);
152 }
153 if (v.equals(exit_btn))
154 android.os.Process.killProcess(android.os.Process.myPid());
155 }
156
157 private final LocationListener locationListener = new LocationListener() {
158
159 @Override
160 public void onLocationChanged(Location arg0) {
161 showInfo(getLastPosition(), 2);
162 }
163
164 @Override
165 public void onProviderDisabled(String arg0) {
166 showInfo(null, -1);
167 }
168
169 @Override
170 public void onProviderEnabled(String arg0) {
171 }
172
173 @Override
174 public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
175 }
176
177 };
178
179 private void initView() {
180 tv_Latitude = (TextView) findViewById(R.id.tvlatitude);
181 tv_Longitude = (TextView) findViewById(R.id.tvlongitude);
182 tv_High = (TextView) findViewById(R.id.tvhigh);
183 tv_Direction = (TextView) findViewById(R.id.tvdirection);
184 tv_Speed = (TextView) findViewById(R.id.tvspeed);
185 tv_GpsTime = (TextView) findViewById(R.id.tvgpstime);
186 tv_InfoType = (TextView) findViewById(R.id.tvinfotype);
187 et_SetTimeSpace = (EditText) findViewById(R.id.ettimespace);
188
189 manual_btn = (Button) findViewById(R.id.btnmanual);
190 manual_btn.setOnClickListener(this);
191 settimespace_btn = (Button) findViewById(R.id.btnsettimespace);
192 settimespace_btn.setOnClickListener(this);
193 exit_btn = (Button) findViewById(R.id.btnexit);
194 exit_btn.setOnClickListener(this);
195 }
196
197 }
时间： 2024-07-30 10:18:43