前言

Android 开发中经常会遇到获取位置信息的需求，查阅了相关资料，封装了 LocationHelper 方便以后使用

步骤

1、定义 LocationListener，为了和系统的 LocationListener 区分，此处取名： MyLocationListener

import android.location.GpsStatus;
import android.location.Location;
import android.os.Bundle;

/**
 * LocationListener
 * Created by Jaycee on 2017/3/27.
 */
public interface MyLocationListener {
    void updateLastLocation(Location location);

    void updateLocation(Location location);// 位置信息发生改变

    void updateStatus(String provider, int status, Bundle extras);// 位置状态发生改变

    void updateGpsStatus(GpsStatus gpsStatus);// GPS状态发生改变
}

2、封装 LocationHelper

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.Bundle;
import android.support.v4.app.ActivityCompat;
import android.util.Log;

/**
 * LocationHelper
 * Created by Jaycee on 2017/3/27.
 */
public class LocationHelper implements LocationListener {

    private static final String TAG = "LocationHelper";

    private LocationManager mLocationManager;
    private MyLocationListener mListener;
    private Context mContext;

    public LocationHelper(Context context) {
        mContext = context.getApplicationContext();
        mLocationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
    }

    public void initLocation(MyLocationListener listener) {
        mListener = listener;
        Location location;

        if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;
        }

        if (mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            Log.d(TAG, "LocationManager.GPS_PROVIDER");
            location = mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            if (location != null) {
                mListener.updateLastLocation(location);
            }
            mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);

        } else if (mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
            Log.d(TAG, "LocationManager.NETWORK_PROVIDER");
            location = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            if (location != null) {
                mListener.updateLastLocation(location);
            }
            mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
        }
    }

    public void removeLocationUpdatesListener() {
        if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        if (mLocationManager != null) {
            mLocationManager.removeUpdates(this);
        }
    }

    // 定位坐标发生改变
    @Override
    public void onLocationChanged(Location location) {
        Log.d(TAG, "onLocationChanged: ");
        if (mListener != null) {
            mListener.updateLocation(location);
        }
    }

    // 定位服务状态改变
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        Log.d(TAG, "onStatusChanged: ");
        if (mListener != null) {
            mListener.updateStatus(provider, status, extras);
        }
    }

    // 定位服务开启
    @Override
    public void onProviderEnabled(String provider) {
        Log.d(TAG, "onProviderEnabled: " + provider);
    }

    // 定位服务关闭
    @Override
    public void onProviderDisabled(String provider) {
        Log.d(TAG, "onProviderDisabled: " + provider);
    }
}

3、Utils

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.LocationManager;
import android.support.annotation.NonNull;
import android.support.v4.content.ContextCompat;

/**
 * Utils
 * Created by jaycee on 2017/3/28.
 */
public class Utils {
    public static boolean isLocationPermissionGranted(@NonNull Context context) {
        return ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
                || ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;
    }

    public static boolean isLocationProviderEnabled(@NonNull Context context) {
        LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)
                || locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
    }
}

使用

在 Activity 中使用

import android.Manifest;
import android.location.GpsStatus;
import android.location.Location;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

/**
 * with Location
 * Created by Jaycee on 2017/3/27.
 */
public abstract class BaseLocationActivity extends AppCompatActivity {

    private LocationHelper mLocationHelper;
    private double mLongitude;
    private double mLatitude;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (Utils.isLocationPermissionGranted(this)
                && Utils.isLocationProviderEnabled(this)) {
            initLocation();
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mLocationHelper != null) {
            mLocationHelper.removeLocationUpdatesListener();
        }
    }

    private void initLocation() {
        mLocationHelper = new LocationHelper(this);
        mLocationHelper.initLocation(new MyLocationListener() {
            @Override
            public void updateLastLocation(Location location) {
                mLongitude = location.getLongitude();
                mLatitude = location.getLatitude();
            }

            @Override
            public void updateLocation(Location location) {
                mLongitude = location.getLongitude();
                mLatitude = location.getLatitude();
            }

            @Override
            public void updateStatus(String provider, int status, Bundle extras) {

            }

            @Override
            public void updateGpsStatus(GpsStatus gpsStatus) {

            }
        });
    }

    protected boolean canGetLocation() {
        return mLongitude != 0 || mLatitude != 0;
    }

    protected double getLongitude() {
        return mLongitude;
    }

    protected double getLatitude() {
        return mLatitude;
    }
}

关于权限

Android 6.0 以上定位权限需要在运行时请求，可使用 RxPermissions

小结

如有问题，欢迎留言指正