【原创】通过Android自带的工具实现当前定位
2步搞定getBestProvider返回null的问题
今天用Android自带的LocationManager和Location类实现定位，然而中间却出了点问题，那就是getBestProvider在真机上测试返回null值。查阅了很多方法都没有效果，于是我自己灵机一动想出了较好的解决办法。基本代码如下：

import android.Manifest;

import android.content.pm.PackageManager;

import android.location.Location;

import android.location.LocationListener;

import android.os.Bundle;

import android.provider.Settings;

import androidx.appcompat.app.AppCompatActivity;

import androidx.core.app.ActivityCompat;

import androidx.core.content.ContextCompat;



public class MainActivity extends AppCompatActivity {

    private static final int LOCATION_PERMISSION_REQUEST_CODE = 100;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        // 检查是否已经获取到位置权限

        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

            // 请求位置权限

            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_PERMISSION_REQUEST_CODE);

        } else {

            getLocation();

        }

    }



    private void getLocation() {

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

        if (locationManager != null) {

            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);

            Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

            if (location != null) {

                // 使用Location对象进行其他操作

            }

        }

    }

}