手机GPS定位

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1.   

1.获取权限

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1. <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>  
2. <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>  
3. <uses-permission android:name="android.permission.LOCATION_HARDWARE"/>  
4. <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  
5. <uses-permission android:name="android.permission.INTERNET"/>  

2.主函数

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1. public class MainActivity extends AppCompatActivity {  
2.     private LocationManager syst;  
3.     private TextView tv;  
4.   
5.     @Override  
6.     protected void onCreate(Bundle savedInstanceState) {  
7.         super.onCreate(savedInstanceState);  
8.         setContentView(R.layout.activity_main);  
9.         syst = (LocationManager) getSystemService(Context.LOCATION_SERVICE);  
10.         tv = (TextView) findViewById(R.id.tv);  
11.         if (!syst.isProviderEnabled(LocationManager.GPS_PROVIDER)) {  
12.             Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);  
13.             startActivityForResult(intent, 1);  
14.             return;  
15.         }  
16. //        String best = syst.getBestProvider(getcriteria(), true);  
17.         syst.addGpsStatusListener(gps);  
18.   
19. //        syst.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1, lo);  
20.         syst.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 1, lo);  
21.     }  
22.     // 位置监听  
23.     LocationListener lo = new LocationListener() {  
24.         /**  
25.          * 位置信息变化时触发  
26.          */  
27.         @Override  
28.         public void onLocationChanged(Location location) {  
29.                     up(location);  
30. //            Log.d("aa", "时间：" + location.getTime());  
31. //            Log.d("aa", "经度：" + location.getLongitude());  
32. //            Log.d("aa", "纬度：" + location.getLatitude());  
33. //            Log.d("aa", "海拔：" + location.getAltitude());  
34.         }  
35.         /**  
36.          * GPS状态变化时触发  
37.          */  
38.         @Override  
39.         public void onStatusChanged(String s, int i, Bundle bundle) {  
40.   
41.         }  
42.         /**  
43.          * 位置信息变化时触发  
44.          */  
45.         @Override  
46.         public void onProviderEnabled(String s) {  
47.   
48.         }  
49.         /**  
50.          * GPS禁用时触发  
51.          */  
52.         @Override  
53.         public void onProviderDisabled(String s) {  
54.   
55.         }  
56.     };  
57.     // 状态监听  
58.    GpsStatus.Listener gps=new GpsStatus.Listener() {  
59.        @Override  
60.        public void onGpsStatusChanged(int i) {  
61. //           switch (i) {  
62. //               case GpsStatus.GPS_EVENT_FIRST_FIX:  
63. //                   Log.d("aa", "第一次定位");  
64. //                   break;  
65. //               case GpsStatus.GPS_EVENT_SATELLITE_STATUS:  
66. //                   Log.d("aa", "卫星状态改变");  
67. //                   // 获取当前状态  
68. //                   GpsStatus gpsStatus = syst.getGpsStatus(null);  
69. //                   // 获取卫星颗数的默认最大值  
70. //                   int maxSatellites = gpsStatus.getMaxSatellites();  
71. //                   // 创建一个迭代器保存所有卫星  
72. //                   Iterator<GpsSatellite> iters = gpsStatus.getSatellites()  
73. //                           .iterator();  
74. //                   int count = 0;  
75. //                   while (iters.hasNext() && count <= maxSatellites) {  
76. //                       GpsSatellite s = iters.next();  
77. //                       count++;  
78. //                   }  
79. //                   System.out.println("搜索到：" + count + "颗卫星");  
80. //                   break;  
81. //  
82. //               case GpsStatus.GPS_EVENT_STARTED:  
83. //                   Log.d("aa", "定位启动");  
84. //                   break;  
85. //               case GpsStatus.GPS_EVENT_STOPPED:  
86. //                   Log.d("aa", "定位停止");  
87. //                   break;  
88. //           }  
89.        }  
90.    };  
91. //    public Criteria getcriteria(){  
92. //        Criteria criteria = new Criteria();  
93. //        criteria.setAccuracy(Criteria.ACCURACY_FINE);  
94. //        return criteria;  
95. //    }  
96.     public void up(Location lo){  
97.   
98.         tv.setText(String.valueOf(lo.getLongitude()));  
99. //        tv.setText(String.valueOf(lo.getLatitude()));  
100.     }  
101.   
102. }  

3.主布局

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1. <?xml version="1.0" encoding="utf-8"?>  
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"  
4.     android:layout_width="match_parent" android:layout_height="match_parent"  
5.     tools:context="com.example.myapplication.MainActivity"  
6.     android:orientation="vertical">  
7.   
8.     <TextView  
9.         android:id="@+id/tv"  
10.         android:layout_width="wrap_content"  
11.         android:layout_height="wrap_content"  
12.         android:text="Hello World!" />  
13. </LinearLayout>