Android实现地理定位功能

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：

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