Android 获取经纬度。2018年写

分手后的思念是犯贱 2022-05-15 05:44 205阅读 0赞

**本博客内容**  
获取当前经纬度信息，显示到textView里

**具体代码**  
1。 添加权限 AndroidManifest.xml

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

MainActivity.java

package com.example.tnt.gps;
    
    import android.Manifest;
    import android.annotation.SuppressLint;
    import android.content.Context;
    import android.content.Intent;
    import android.content.pm.PackageManager;
    import android.location.Address;
    import android.location.Geocoder;
    import android.location.Location;
    import android.location.LocationListener;
    import android.location.LocationManager;
    import android.provider.Settings;
    import android.support.v4.app.ActivityCompat;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.widget.TextView;
    import android.widget.Toast;
    
    import java.io.IOException;
    import java.util.List;
    import java.util.Locale;
    
    public class MainActivity extends AppCompatActivity {
    
        private LocationManager lm;
        private TextView tv_show;
    
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tv_show = findViewById(R.id.tv_show);
            lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    
            if (!isGpsAble(lm)) {
                Toast.makeText(MainActivity.this, "请打开GPS~", Toast.LENGTH_SHORT).show();
                openGPS2();
            }
    
            //从GPS获取最近的定位信息
            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                // TODO: Consider calling
                //    ActivityCompat#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 ActivityCompat#requestPermissions for more details.
                return;
            }
            Location lc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            updateShow(lc);
            //设置间隔两秒获得一次GPS定位信息
            lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 8, new LocationListener() {
                @Override
                public void onLocationChanged(Location location) {
                    // 当GPS定位信息发生改变时，更新定位
                    updateShow(location);
                }
                @Override
                public void onStatusChanged(String provider, int status, Bundle extras) {
    
                }
                @SuppressLint("MissingPermission")
                @Override
                public void onProviderEnabled(String provider) {
                    updateShow(lm.getLastKnownLocation(provider));
                }
                @Override
                public void onProviderDisabled(String provider) {
                    updateShow(null);
                }
            });
        }
    
        private boolean isGpsAble(LocationManager lm){
            return lm.isProviderEnabled(LocationManager.GPS_PROVIDER)? true:false;
        }
    
    
        //打开设置页面让用户自己设置
        private void openGPS2() {
            Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            startActivityForResult(intent, 0);
        }
    
        //定义一个更新显示的方法
        private void updateShow(Location location) {
            if (location != null) {
                StringBuilder sb = new StringBuilder();
                sb.append("当前的位置信息：\n");
                sb.append("经度：" + location.getLongitude() + "\n");
                sb.append("纬度：" + location.getLatitude() + "\n");
                sb.append("高度：" + location.getAltitude() + "\n");
                sb.append("速度：" + location.getSpeed() + "\n");
                sb.append("方向：" + location.getBearing() + "\n");
                sb.append("定位精度：" + location.getAccuracy() + "\n");
                tv_show.setText(sb.toString());
            } else tv_show.setText("");
        }
    }

**最后界面效果：**