GPS定位例子

package com.itheima62.gpsdemo;

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 TextView tv_mess;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv_mess = (TextView) findViewById(R.id.tv_gps_mess);
        //定位 定位管理器
        LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE);
        LocationListener listener = new LocationListener() {
            
            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void onProviderEnabled(String provider) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void onProviderDisabled(String provider) {
                // TODO Auto-generated method stub
                
            }
            
            /* (non-Javadoc)
             * 位置变化，就触发此方法调用，覆盖此方法可以追踪回调结果信息
             * @see android.location.LocationListener#onLocationChanged(android.location.Location)
             */
            @Override
            public void onLocationChanged(Location location) {
                //获取位置变化的结果
                float accuracy = location.getAccuracy();//精确度,以米为单位
                double altitude = location.getAltitude();//获取海拔高度
                double longitude = location.getLongitude();//获取经度
                double latitude = location.getLatitude();//获取纬度
                float speed = location.getSpeed();//速度
                
                tv_mess.append("accuracy:" + accuracy + "\n");
                tv_mess.append("altitude:" + altitude + "\n");
                tv_mess.append("longitude:" + longitude + "\n");
                tv_mess.append("latitude:" + latitude + "\n");
                tv_mess.append("speed:" + speed + "\n");
                
            }
        };
        /**
         * provider  定位的方式: 1，wifi  2，3g/4g 消极定位  3,gps
         * minTime   定位的时间差  10分钟
         * minDistance 定位的距离差 10m 
         * listener 定位的监听回调
         */
        lm.requestLocationUpdates("gps", 0, 0, listener);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}