Android获取经纬度的值并且显示

import androidx.appcompat.app.AppCompatActivity;

import android.Manifest;
import android.app.Activity;
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.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

public class MainActivity extends Activity {
    private LocationManager locationManager;
    private String locationProvider;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //获取地理位置管理器
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        //获取所有可用的位置提供器
        List<String> providers = locationManager.getProviders(true);
        if (providers.contains(LocationManager.GPS_PROVIDER)) {
            //如果是GPS
            locationProvider = LocationManager.GPS_PROVIDER;
        } else if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
            //如果是Network
            locationProvider = LocationManager.NETWORK_PROVIDER;
        } else {
            Toast.makeText(this, "没有可用的位置提供器", Toast.LENGTH_SHORT).show();
            return;
        }
        //获取Location
        if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    Activity#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for Activity#requestPermissions for more details.
            return;
        }
        Location location = locationManager.getLastKnownLocation(locationProvider);
        if (location != null) {
            //不为空,显示地理位置经纬度
            Log.i("TAG", "经度" + location.getLongitude() + "纬度" + location.getLatitude());
            TextView tv1 = findViewById(R.id.tv1);
            tv1.setText("经度" + location.getLongitude() + "纬度" + location.getLatitude());
        }
        //监视地理位置变化
        if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    Activity#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for Activity#requestPermissions for more details.
            return;
        }
        locationManager.requestLocationUpdates(locationProvider, 1000, 1, locationListener);

    }


    LocationListener locationListener = new LocationListener() {

        @Override
        public void onStatusChanged(String provider, int status, Bundle arg2) {

        }

        @Override
        public void onProviderEnabled(String provider) {

        }

        @Override
        public void onProviderDisabled(String provider) {

        }

        @Override
        public void onLocationChanged(Location location) {
            //如果位置发生变化,重新显示 如果位置改变，经纬度没有变，不会执行此函数 应该说经纬度发生变化执行此函数
            Log.i("TAG","经度"+location.getLongitude()+"纬度"+location.getLatitude());

        }
    };

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (locationManager != null) {
            //移除监听器
            locationManager.removeUpdates(locationListener);
        }
    }

}