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申明:不要使用23以上的API，因为多了一个权限审核，会抛出异常，我今天就是因为Android Studio自动设置成23的API了，导致异常。

开发定位的功能很简单,首先获取LocationManager服务对象:

LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE);

然后使用LocationManager对象的getLastKnownLocation方法返回一个Location对象,Location包含了经度、维度、海拔、速度等等信息，对，这就是我们要的。
代码：

Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
StringBuffer sb = new StringBuffer();
if(location!=null) {
 sb.append("经度:" + location.getLatitude() + " ");
 sb.append("纬度:" + location.getLongitude() + " ");
 sb.append("速度:" + location.getSpeed() + " ");
 sb.append("提供者:" + location.getProvider() + " ");
 sb.append("精准度:" + location.getAccuracy() + " ");
 sb.append("海拔:" + location.getAltitude() + " ");
 sb.append("getBearing:" + location.getBearing() + " ");
 sb.append("getElapsedRealtimeNanos:" + location.getElapsedRealtimeNanos() + " ");
}

text.setText( sb);

如果我们需要在特定的时间内更新GPS位置，那么我们需要创建监听器LocationListener，LocationListener可以为我们更新位置信息，使用LocationManager方法：

public void requestLocationUpdates (String provider, long minTime, float minDistance, LocationListenerlistener)

监听器的代码：

new LocationListener() {
    @Override
    public void onLocationChanged(Location location) {
        double lnt = location.getLatitude() ;
        double log = location.getLongitude() ;

        //toast("onLocationChanged:lnt[" + lnt + "] log[" + log + "]");
        StringBuffer sb = new StringBuffer();

        sb.append("经度:" + location.getLatitude() + " ");
        sb.append("纬度:" + location.getLongitude() + " ");
        sb.append("速度:" + location.getSpeed() + " ");
        sb.append("提供者:" + location.getProvider() + " ");
        sb.append("精准度:" + location.getAccuracy() + " ");
        sb.append("海拔:" + location.getAltitude() + " ");
        sb.append("getBearing:" + location.getBearing() + " ");
        sb.append("getElapsedRealtimeNanos:" + location.getElapsedRealtimeNanos() + " ");
        text.setText(sb.toString());
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        toast("onStatusChanged");
    }

    @Override
    public void onProviderEnabled(String provider) {
        toast("onProviderEnabled");
    }

    @Override
    public void onProviderDisabled(String provider) {
        toast("onProviderDisabled");
    }
};

全部代码：

package com.lanxin.testlocation2;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;
import java.lang.ref.SoftReference;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "LocatinLog";
    TextView text;
    Context mContext;
    LocationManager lm;
    Geocoder geocoder;
    LocationListener ll;
    LocationProvider lp;
    Location location;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

        findid();
        init();

    }


    private void init() {
        lm = (LocationManager) getSystemService(LOCATION_SERVICE);
        geocoder = new Geocoder(mContext);
        location = new Location(LocationManager.GPS_PROVIDER);

        ll = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                double lnt = location.getLatitude() ;
                double log = location.getLongitude() ;

                //toast("onLocationChanged:lnt[" + lnt + "] log[" + log + "]");
                StringBuffer sb = new StringBuffer();

                sb.append("经度:" + location.getLatitude() + " ");
                sb.append("纬度:" + location.getLongitude() + " ");
                sb.append("速度:" + location.getSpeed() + " ");
                sb.append("提供者:" + location.getProvider() + " ");
                sb.append("精准度:" + location.getAccuracy() + " ");
                sb.append("海拔:" + location.getAltitude() + " ");
                sb.append("getBearing:" + location.getBearing() + " ");
                sb.append("getElapsedRealtimeNanos:" + location.getElapsedRealtimeNanos() + " ");
                text.setText(sb.toString());
            }

            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
                toast("onStatusChanged");
            }

            @Override
            public void onProviderEnabled(String provider) {
                toast("onProviderEnabled");
            }

            @Override
            public void onProviderDisabled(String provider) {
                toast("onProviderDisabled");
            }
        };



        location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        StringBuffer sb = new StringBuffer();
        if(location!=null) {
            sb.append("经度:" + location.getLatitude() + " ");
            sb.append("纬度:" + location.getLongitude() + " ");
            sb.append("速度:" + location.getSpeed() + " ");
            sb.append("提供者:" + location.getProvider() + " ");
            sb.append("精准度:" + location.getAccuracy() + " ");
            sb.append("海拔:" + location.getAltitude() + " ");
            sb.append("getBearing:" + location.getBearing() + " ");
            sb.append("getElapsedRealtimeNanos:" + location.getElapsedRealtimeNanos() + " ");
        }



        text.setText( sb);


    }

    private void findid() {
        mContext = this;
        text = (TextView) findViewById(R.id.text);
        Button go = (Button)findViewById(R.id.go);
        go.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                toast("onLocationChanged:lnt[" + location.getLatitude() + "] log[" + location.getLongitude()  + "]");
                try {
                    List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 5);

                    if(addresses!=null && addresses.size() > 0){
                        StringBuffer sb = new StringBuffer();

                        for(int i=0;i<addresses.size();i++){
                            Address adr = addresses.get(i);
                            sb.append("lat"+i+":"+adr.getLatitude()+"lnt"+i+":"+adr.getLongitude()+"  \n\t ");
                        }
                        text.setText(sb.toString());
                    }

                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });

    }

    private void toast(String msg) {
        Toast.makeText(mContext, msg, Toast.LENGTH_LONG).show();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        lm.removeUpdates(ll);//程序注销时应该移除监听器,以减少电量的使用

    }

    protected void onResume() {
        super.onResume();

        lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll);//程序恢复的时候我们注册监听器
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}