一、用户定位涉及到得关键API：
location manager ：管理用户的定位服务
location provider : 选择哪种途径获得用户位置
二、获取用户位置的途径：
GPS，需要在AndroidManifest.xml中声明：android.permission.ACCESS_FINE_LOCATION
NETWORK：信号塔或wifi，需要在androidMmanifest.xml中申明：android.permission.ACCESS_FINE_LOCATION
或 android.permisson.ACCESS_COARSE_LOCATION
三、实现的一般步骤：
1、在AndroidManifest.xml里定义权限
2、获取Location manager对象
3、选择location provider
4、绑定locationListener （位置移动时会触发某个时间）
四、代码参考：
AndroidManifest.xml
View Code main.xml
View Code userLocation.java
View Code 1 package max.userLocation; 2 3 import android.app.Activity; 4 import android.location.Location; 5 import android.location.LocationListener; 6 import android.location.LocationManager; 7 import android.os.Bundle; 8 import android.view.View; 9 import android.view.View.OnClickListener;10 import android.widget.Button;11 12 public class UserLocation extends Activity {13 /** Called when the activity is first created. */14 Button userLocationBtn = null;15 16 @Override17 public void onCreate(Bundle savedInstanceState) {18 super.onCreate(savedInstanceState);19 setContentView(R.layout.main);20 userLocationBtn = (Button) findViewById(R.id.buttonId);21 userLocationBtn.setOnClickListener(new userLocationBtnListener());22 }23 class userLocationBtnListener implements OnClickListener {24 25 @Override26 public void onClick(View arg0) {27 // TODO Auto-generated method stub28 LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);29 locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new userLocationListener());30 }31 32 }33 class userLocationListener implements LocationListener {34 35 @Override36 public void onLocationChanged(Location arg0) {37 // TODO Auto-generated method stub38 System.out.println("经度:" + arg0.getLongitude());39 System.out.println("纬度:" + arg0.getLatitude());40 41 }42 43 @Override44 public void onProviderDisabled(String provider) {45 // TODO Auto-generated method stub46 47 }48 49 @Override50 public void onProviderEnabled(String provider) {51 // TODO Auto-generated method stub52 53 }54 55 @Override56 public void onStatusChanged(String provider, int status, Bundle extras) {57 // TODO Auto-generated method stub58 59 }60 61 }62 }
posted on 2012-06-26 14:04 阅读( ...) 评论( ...) 收藏