android中GPS信息的获取

AndroidManifest.xml 增加 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>

public class ditu extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LocationManager locationManager;
String serviceName=Context.LOCATION_SERVICE;
locationManager=(LocationManager)this.getSystemService(serviceName);
//查询条件
Criteria criteria=new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);

String provider=locationManager.getBestProvider(criteria,true);
Location location=locationManager.getLastKnownLocation(provider);
updateWithNewLocation(location);
//设置监听器，自动更新的最小时间为间隔1秒，最小位移变化超过5米
locationManager.requestLocationUpdates(provider, 1000, 5, locationListener);

}
private final LocationListener locationListener=new LocationListener(){

public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}

public void onProviderDisabled(String provider) {
updateWithNewLocation(null);
}

public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}

};
private void updateWithNewLocation(Location location){
String latLongString;
TextView myLocationText;
myLocationText=(TextView)this.findViewById(R.id.myLocationText);
if(location!=null){
double lat=location.getLatitude();
double lng=location.getLongitude();
latLongString="维度："+lat+"\n经度"+lng;
}else{
latLongString="无法获取地理信息";
}
myLocationText.setText("您所在位置为："+latLongString);
}
}

哈哈，只要手机开了GPS,你就能随时定位自己的位置，可惜显示出来的是经纬度，如果结合google API，那就能显示在地图上了。

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