android obtains location data and gps latitude and longitude through gps

package com.action.android_test; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.widget.TextView; public class MainActivity extends Activity { private Location location=null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //获得位置服务的名称 String serviceName = this.LOCATION_SERVICE; //获得位置服务的管理对象 LocationManager locationManager = (LocationManager)getSystemService(serviceName); // 通过GPS获取定位的位置数据 location = locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER); updateToNewLocation(location); /**服务管理对象的监听器*/ //参数1：定位的方式 参数2：监听更新间隔时间(ms) 参数3：监听更新的距离(m) 参数4：监听的方法 locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER, 2000, 10, new LocationListener() { public void onStatusChanged(String provider, int status, Bundle extras) { } public void onProviderEnabled(String provider) { } public void onProviderDisabled(String provider) { } public void onLocationChanged(Location location) { updateToNewLocation(location); } }); } private void updateToNewLocation(Location location) { TextView tv1; tv1 = (TextView) this.findViewById(R.id.tv1); if (location != null) { double latitude = location.getLatitude(); double longitude= location.getLongitude(); tv1.setText("经纬度为：n"+"维度：" + latitude+ "n经度" + longitude); } else { tv1.setText("无法获取地理信息"); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; }

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