Android定位获取当前经纬度

1.使用android提供的LocationManager管理类
2.使用GPS或者网络定位
3.只使用了Log打印出经纬度，没有在界面显示

public class MainActivity extends Activity {    private LocationManager locationManager;    private String locationProvider;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //获取地理位置管理器        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);        //获取所有可用的位置提供器        List providers = locationManager.getProviders(true);        if (providers.contains(LocationManager.GPS_PROVIDER)) {            //如果是GPS            locationProvider = LocationManager.GPS_PROVIDER;        } else if (providers.contains(LocationManager.NETWORK_PROVIDER)) {            //如果是Network            locationProvider = LocationManager.NETWORK_PROVIDER;        } else {            Toast.makeText(this, "没有可用的位置提供器", Toast.LENGTH_SHORT).show();            return;        }        //获取Location        Location location = locationManager.getLastKnownLocation(locationProvider);        if (location != null) {            //不为空,显示地理位置经纬度     Log.i("TAG","经度"+location.getLongitude()+"纬度"+location.getLatitude());        }        //监视地理位置变化        locationManager.requestLocationUpdates(locationProvider, 1000, 1, locationListener);    }    LocationListener locationListener = new LocationListener() {        @Override        public void onStatusChanged(String provider, int status, Bundle arg2) {        }        @Override        public void onProviderEnabled(String provider) {        }        @Override        public void onProviderDisabled(String provider) {        }        @Override        public void onLocationChanged(Location location) {            //如果位置发生变化,重新显示 如果位置改变，经纬度没有变，不会执行此函数 应该说经纬度发生变化执行此函数            Log.i("TAG","经度"+location.getLongitude()+"纬度"+location.getLatitude());        }    };    @Override    protected void onDestroy() {        super.onDestroy();        if (locationManager != null) {            //移除监听器           locationManager.removeUpdates(locationListener);        }    }}

在AndroidManifest.xml中加入所需权限

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

已知缺点：
1.定位速度慢，效果差
2.没有检查是否打开GPS

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