Androidは原生APiで位置の経緯度を取得

Androidが原生APiで位置の経緯度を取得することを紹介した.シーン:ユーザーappのホームページを追加した後、ユーザーの緯度を1つのインタフェースを通じてサービス側に戻し、サーバーを正確に位置決めすることができます.
ステップ分析:

権限の問題:Android 6.0以降にダイナミック権限が追加されましたが、緯度座標を取得する権限を取得appの(TargetVersion>=23)場合はダイナミック取得が必要です(もちろんリストファイルにも設定しなければなりません)

コード実装(詳細は後述)

一、権限構成

インベントリファイル権限

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

2権限申請コード

  public class MainActivity extends AppCompatActivity {
 
  private static final int LOCATION_CODE = 1;
  private LocationManager lm;//    
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate( savedInstanceState );
    setContentView( R.layout.activity_main );
    //       
    GPSQunaxian();
  }
 
  /**
    *        
    */
  public void GPSQunaxian(){
        lm = (LocationManager) MainActivity.this.getSystemService(MainActivity.this.LOCATION_SERVICE);
        boolean ok = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
        if (ok) {//      
            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION)
                    != PackageManager.PERMISSION_GRANTED) {
                Log.d("kly","    ");
                //     ，    。
                //     。
                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_CODE);
                //Toast.makeText(getActivity(), "    ", Toast.LENGTH_SHORT).show();

            } else {
                //     ，    。
                //Toast.makeText(getActivity(), "   ", Toast.LENGTH_SHORT).show();
            }
        } else {
            Log.d("kly","d        GPS    ");
            Toast.makeText(MainActivity.this, "        GPS    ", 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) {
                    //        。

                } else {
                    //         。
                    Toast.makeText(MainActivity.this, "       ，          ！",Toast.LENGTH_LONG).show();
                }

            }
        }
    }
}

二、工具類

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.
 *          
 */
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.       
        locationManager = (LocationManager) mContext.getSystemService( Context.LOCATION_SERVICE );
        //2.       ，GPS  NetWork
        List<String> providers = locationManager.getProviders( true );
        if (providers.contains( LocationManager.NETWORK_PROVIDER )) {
            //       
            Log.d( "kly", "       " );
            locationProvider = LocationManager.NETWORK_PROVIDER;
        } else if (providers.contains( LocationManager.GPS_PROVIDER )) {
            //   GPS  
            Log.d( "kly", "   GPS  " );
            locationProvider = LocationManager.GPS_PROVIDER;
        } else {
            Log.d( "kly", "          " );
            return;
        }
        //       ,      ,         ,     。       code  。
        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.       ，       ，   null
        Location location = locationManager.getLastKnownLocation( locationProvider );
        if (location != null) {
            setLocation( location );
        }else {
            Log.d("kly","location=null");
        }
        //         ，                   minTime     minDistace
        locationManager.requestLocationUpdates( locationProvider, 0, 0, locationListener );
    }
    private void setLocation(Location location) {
        this.location = location;
        String address = "  ：" + location.getLatitude() + "  ：" + location.getLongitude();
        Log.d( "kly", "address"+address );
    }

    //     
    public Location showLocation() {
        return location;
    }

    //       
    public void removeLocationUpdatesListener() {
        //       ,      
        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   
     *   ：       、           、         、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) {
            location.getAccuracy();//   
            setLocation(location);
        }
    };
}

三、完全なコード

  public class MainActivity extends AppCompatActivity {
 
  private static final int LOCATION_CODE = 1;
  private LocationManager lm;//    
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate( savedInstanceState );
    setContentView( R.layout.activity_main );
    //       
    GPSQunaxian();
    Location location = GPSUtils.getInstance( MainActivity.this ).showLocation();
    if (location != null) {
            String address = "  ：" + location.getLatitude() + "  ：" + location.getLongitude();
            Log.d( "kly",address );
            Toast.makeText(MyApplication.getContext(),address,Toast.LENGTH_SHORT).show();
    }
  }
 
  /**
    *        
    */
  public void GPSQunaxian(){
        lm = (LocationManager) MainActivity.this.getSystemService(MainActivity.this.LOCATION_SERVICE);
        boolean ok = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
        if (ok) {//      
            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION)
                    != PackageManager.PERMISSION_GRANTED) {
                Log.d("kly","    ");
                //     ，    。
                //     。
                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, LOCATION_CODE);
                //Toast.makeText(getActivity(), "    ", Toast.LENGTH_SHORT).show();

            } else {
                //     ，    。
                //Toast.makeText(getActivity(), "   ", Toast.LENGTH_SHORT).show();
            }
        } else {
            Log.d("kly","d        GPS    ");
            Toast.makeText(MainActivity.this, "        GPS    ", 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) {
                    //        。

                } else {
                    //         。
                    Toast.makeText(MainActivity.this, "       ，          ！",Toast.LENGTH_LONG).show();
                }

            }
        }
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        GPSUtils.getInstance( this ).removeLocationUpdatesListener();
    }
}

以上が本文のすべての内容で、みんなの学习に対して役に立つことを望みます