本文參考文檔

• https://developer.android.com/training/location/retrieve-current?hl=zh-cn
• https://blog.csdn.net/qq_29848853/article/details/129636031

GMS 實(shí)現(xiàn)

1. 引入依賴庫(kù)

implementation 'com.google.android.gms:play-services-location:21.0.1'

2. 獲取權(quán)限： 在AndroidManifest.xml中添加位置權(quán)限：

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

3. 在代碼中請(qǐng)求權(quán)限： 在您的Activity中請(qǐng)求位置權(quán)限，以便您可以訪問(wèn)設(shè)備的地理位置信息。這通常是在運(yùn)行時(shí)動(dòng)態(tài)請(qǐng)求的：

private static final int LOCATION_PERMISSION_REQUEST_CODE = 123;

// 在合適的地方調(diào)用此方法以請(qǐng)求位置權(quán)限
private void requestLocationPermission() {
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
            LOCATION_PERMISSION_REQUEST_CODE);
}

// 處理權(quán)限請(qǐng)求的回調(diào)
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == LOCATION_PERMISSION_REQUEST_CODE) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            // 已獲得位置權(quán)限，可以繼續(xù)獲取地理位置
            // 調(diào)用獲取位置的方法
        } else {
            // 未獲得位置權(quán)限，您可以選擇向用戶解釋為什么需要權(quán)限
        }
    }
}

4. 獲取地理位置： 一旦獲得了位置權(quán)限，您可以使用Fused Location Provider API來(lái)獲取地理位置信息：

import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import android.location.Location;

// 在合適的地方初始化FusedLocationProviderClient
private FusedLocationProviderClient fusedLocationClient;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);

    // 調(diào)用獲取位置的方法
    getLastLocation();
}

private void getLastLocation() {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
        Task<Location> locationTask = fusedLocationClient.getLastLocation();
        locationTask.addOnSuccessListener(new OnSuccessListener<Location>() {
            @Override
            public void onSuccess(Location location) {
                if (location != null) {
                    double latitude = location.getLatitude();
                    double longitude = location.getLongitude();
                    // 在這里處理獲取到的經(jīng)緯度信息
                }
            }
        });
    } else {
        // 未獲得位置權(quán)限，需要請(qǐng)求權(quán)限
        requestLocationPermission();
    }
}

原生API 實(shí)現(xiàn)

1. 獲取 系統(tǒng)位置管理服務(wù) LocationManager getSystemService(Context.LOCATION_SERVICE);

2. 通過(guò) locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

3. 取消監(jiān)聽(tīng) locationManager.removeUpdates(locationListener)

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.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    private static final int LOCATION_PERMISSION_REQUEST_CODE = 123;

    private LocationManager locationManager;
    private LocationListener locationListener;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        // 創(chuàng)建一個(gè) LocationListener 實(shí)例來(lái)監(jiān)聽(tīng)位置變化
        locationListener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                double latitude = location.getLatitude();
                double longitude = location.getLongitude();
                // 在這里處理獲取到的經(jīng)緯度信息
            }

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

            @Override
            public void onProviderEnabled(String provider) {}

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

        // 調(diào)用獲取位置的方法
        requestLocationUpdates();
    }

    private void requestLocationUpdates() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
            // 請(qǐng)求位置更新
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
        } else {
            // 未獲得位置權(quán)限，需要請(qǐng)求權(quán)限
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, LOCATION_PERMISSION_REQUEST_CODE);
        }
    }

    // 處理權(quán)限請(qǐng)求的回調(diào)
    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (requestCode == LOCATION_PERMISSION_REQUEST_CODE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // 已獲得位置權(quán)限，重新請(qǐng)求位置更新
                requestLocationUpdates();
            } else {
                // 未獲得位置權(quán)限，您可以選擇向用戶解釋為什么需要權(quán)限
            }
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        // 停止位置更新
        locationManager.removeUpdates(locationListener);
    }
}