Android 实现地理定位功能

来源：互联网发布：电脑软件开发公司编辑：程序博客网时间：2024/05/16 02:14

最近试着写了一下Android的定位，代码在下面，比较简单

首先需要的权限有

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

然后是里面的代码

package com.example.a5.myapplication;import android.Manifest;import android.content.Context;import android.content.pm.PackageManager;import android.location.Criteria;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.support.v4.app.ActivityCompat;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.webkit.WebView;import android.widget.Button;import android.widget.TextView;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        //全屏        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                WindowManager.LayoutParams.FLAG_FULLSCREEN);        setContentView(R.layout.activity_main);        Button button = (Button) findViewById(R.id.button);        button.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //获取位置服务                LocationManager locationManager = (LocationManager) MainActivity.this.getSystemService(Context.LOCATION_SERVICE);                Criteria criteria = new Criteria();                //ACCURACY_HIGH/ACCURACY_LOW精度选择                criteria.setAccuracy(Criteria.ACCURACY_FINE);                //高度                criteria.setAltitudeRequired(true);                //方位信息                criteria.setBearingRequired(true);                //是否允许付费                criteria.setCostAllowed(true);                //对电量的要求                criteria.setPowerRequirement(Criteria.POWER_LOW);                //速度                criteria.setSpeedRequired(true);                //获取最佳服务                String provider = locationManager.getBestProvider(criteria, true);                //权限检查                if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {                    return;                }                //获取到了位置                Location location = locationManager.getLastKnownLocation(provider);                //开启地理位置监听定位类型、毫秒、米、监听时间                locationManager.requestLocationUpdates(provider,3000,1,new listener());               locateResult(location);            }        });    }    public class listener implements LocationListener {        @Override        public void onLocationChanged(Location location) {            //位置变化，获取最新的位置            locateResult(location);        }        @Override        public void onStatusChanged(String provider, int status, Bundle extras) {        }        @Override        public void onProviderEnabled(String provider) {        }        @Override        public void onProviderDisabled(String provider) {        }    }    public void locateResult(Location location){        new AlertDialog.Builder(MainActivity.this)                .setMessage("纬度" + String.valueOf(location.getLatitude()) +                        "\n经度" + String.valueOf(location.getLongitude()) +                        "\n速度" + String.valueOf(location.getSpeed()) +                        "\n高度" + String.valueOf(location.getAltitude()) +                        "\n朝向" + String.valueOf(location.getBearing())                )                .setNegativeButton("取消",null)                .show();    }}

最后上图：

阅读全文

0 0