Android通过原生APi获取所在位置的经纬度

本文介绍了Android通过原生APi获取所在位置的经纬度。
场景：新增一个功能，用户app主页后，将用户的经纬度通过一个接口返回给服务端，从而让服务器可以准确定位。

步骤分析：

权限问题：
Android 6.0之后新增动态权限，而获取获取经纬度坐标的权限如果你的app的（TargetVersion>=23）就需要动态获取了（当然也得在清单文件中设置）
代码实现（具体请看下文）

一、权限配置

1 清单文件权限

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

2 权限申请代码

  public class MainActivity extends AppCompatActivity {   private static final int LOCATION_CODE = 1;  private LocationManager lm;//位置管理    @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate( savedInstanceState );    setContentView( R.layout.activity_main );    // 定位权限申请    GPSQunaxian();  }   /**    *  定位权限申请    */  public void GPSQunaxian(){        lm = (LocationManager) MainActivity.this.getSystemService(MainActivity.this.LOCATION_SERVICE);        boolean ok = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);        if (ok) {//开了定位服务            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION)                    != PackageManager.PERMISSION_GRANTED) {                Log.d("kly","没有权限");                // 没有权限，申请权限。                // 申请授权。                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_CODE);                //Toast.makeText(getActivity(), "没有权限", Toast.LENGTH_SHORT).show();            } else {                // 有权限了，去放肆吧。                //Toast.makeText(getActivity(), "有权限", Toast.LENGTH_SHORT).show();            }        } else {            Log.d("kly","d系统检测到未开启GPS定位服务");            Toast.makeText(MainActivity.this, "系统检测到未开启GPS定位服务", Toast.LENGTH_SHORT).show();            Intent intent = new Intent();            intent.setAction(Settings.ACTION_LOCATION_SOURCE_SETTINGS);            startActivityForResult(intent, 1315);        }    }    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        switch (requestCode) {            case LOCATION_CODE: {                if (grantResults.length > 0                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                    // 权限被用户同意。                } else {                    // 权限被用户拒绝了。                    Toast.makeText(MainActivity.this, "定位权限被禁止，相关地图功能无法使用！",Toast.LENGTH_LONG).show();                }            }        }    }}

二、工具类

package com.gentek.tianlin12.utils;import android.Manifest;import android.content.Context;import android.content.pm.PackageManager;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Build;import android.os.Bundle;import android.support.v4.app.ActivityCompat;import android.util.Log;import java.util.List;/** * Created by Administrator on 2018/4/17. * 获取用户的地理位置 */public class GPSUtils {    private static GPSUtils instance;    private LocationManager locationManager;    private String locationProvider;    private Location location;    private Context mContext;    private GPSUtils(Context context) {        this.mContext = context;        getLocation();    }    public static GPSUtils getInstance(Context context) {        if (instance == null) {            synchronized (GPSUtils.class) {                if (instance == null) {                    instance = new GPSUtils(context);                }            }        }        return instance;    }    private void getLocation() {        //1.获取位置管理器        locationManager = (LocationManager) mContext.getSystemService( Context.LOCATION_SERVICE );        //2.获取位置提供器，GPS或是NetWork        List<String> providers = locationManager.getProviders( true );        if (providers.contains( LocationManager.NETWORK_PROVIDER )) {            //如果是网络定位            Log.d( "kly", "如果是网络定位" );            locationProvider = LocationManager.NETWORK_PROVIDER;        } else if (providers.contains( LocationManager.GPS_PROVIDER )) {            //如果是GPS定位            Log.d( "kly", "如果是GPS定位" );            locationProvider = LocationManager.GPS_PROVIDER;        } else {            Log.d( "kly", "没有可用的位置提供器" );            return;        }        // 需要检查权限,否则编译报错,想抽取成方法都不行,还是会报错。只能这样重复 code 了。        if (Build.VERSION.SDK_INT >= 23 &&                ActivityCompat.checkSelfPermission( mContext, Manifest.permission.ACCESS_FINE_LOCATION ) != PackageManager.PERMISSION_GRANTED &&                ActivityCompat.checkSelfPermission( mContext, Manifest.permission.ACCESS_COARSE_LOCATION ) != PackageManager.PERMISSION_GRANTED) {            return;        }        //3.获取上次的位置，一般第一次运行，此值为null        Location location = locationManager.getLastKnownLocation( locationProvider );        if (location != null) {            setLocation( location );        }else {            Log.d("kly","location=null");        }        // 监视地理位置变化，第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace        locationManager.requestLocationUpdates( locationProvider, 0, 0, locationListener );    }    private void setLocation(Location location) {        this.location = location;        String address = "纬度：" + location.getLatitude() + "经度：" + location.getLongitude();        Log.d( "kly", "address"+address );    }    //获取经纬度    public Location showLocation() {        return location;    }    // 移除定位监听    public void removeLocationUpdatesListener() {        // 需要检查权限,否则编译不过        if (Build.VERSION.SDK_INT >= 23 &&                ActivityCompat.checkSelfPermission( mContext, Manifest.permission.ACCESS_FINE_LOCATION ) != PackageManager.PERMISSION_GRANTED &&                ActivityCompat.checkSelfPermission( mContext, Manifest.permission.ACCESS_COARSE_LOCATION ) != PackageManager.PERMISSION_GRANTED) {            return;        }        if (locationManager != null) {            instance = null;            locationManager.removeUpdates( locationListener );        }    }    /**     * LocationListern监听器     * 参数：地理位置提供器、监听位置变化的时间间隔、位置变化的距离间隔、LocationListener监听器     */    LocationListener locationListener = new LocationListener() {        /**         * 当某个位置提供者的状态发生改变时         */        @Override        public void onStatusChanged(String provider, int status, Bundle arg2) {        }        /**         * 某个设备打开时         */        @Override        public void onProviderEnabled(String provider) {        }        /**         * 某个设备关闭时         */        @Override        public void onProviderDisabled(String provider) {        }        /**         * 手机位置发生变动         */        @Override        public void onLocationChanged(Location location) {            location.getAccuracy();//精确度            setLocation(location);        }    };}

三、完整代码

  public class MainActivity extends AppCompatActivity {   private static final int LOCATION_CODE = 1;  private LocationManager lm;//位置管理    @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate( savedInstanceState );    setContentView( R.layout.activity_main );    // 定位权限申请    GPSQunaxian();    Location location = GPSUtils.getInstance( MainActivity.this ).showLocation();    if (location != null) {            String address = "纬度：" + location.getLatitude() + "经度：" + location.getLongitude();            Log.d( "kly",address );            Toast.makeText(MyApplication.getContext(),address,Toast.LENGTH_SHORT).show();    }  }   /**    *  定位权限申请    */  public void GPSQunaxian(){        lm = (LocationManager) MainActivity.this.getSystemService(MainActivity.this.LOCATION_SERVICE);        boolean ok = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);        if (ok) {//开了定位服务            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION)                    != PackageManager.PERMISSION_GRANTED) {                Log.d("kly","没有权限");                // 没有权限，申请权限。                // 申请授权。                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_CODE);                //Toast.makeText(getActivity(), "没有权限", Toast.LENGTH_SHORT).show();            } else {                // 有权限了，去放肆吧。                //Toast.makeText(getActivity(), "有权限", Toast.LENGTH_SHORT).show();            }        } else {            Log.d("kly","d系统检测到未开启GPS定位服务");            Toast.makeText(MainActivity.this, "系统检测到未开启GPS定位服务", Toast.LENGTH_SHORT).show();            Intent intent = new Intent();            intent.setAction(Settings.ACTION_LOCATION_SOURCE_SETTINGS);            startActivityForResult(intent, 1315);        }    }    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        switch (requestCode) {            case LOCATION_CODE: {                if (grantResults.length > 0                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                    // 权限被用户同意。                } else {                    // 权限被用户拒绝了。                    Toast.makeText(MainActivity.this, "定位权限被禁止，相关地图功能无法使用！",Toast.LENGTH_LONG).show();                }            }        }    }        @Override    protected void onDestroy() {        super.onDestroy();        GPSUtils.getInstance( this ).removeLocationUpdatesListener();    }}

以上就是本文的全部内容，希望对大家的学习有所帮助

一、权限配置

二、工具类

三、完整代码

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