使用GPS获取用户当前和确切位置 [英] Get user current and exact location using GPS

问题描述

对于我的新应用，我需要使用GPS获取用户位置。为此，我正在使用 fusedLocationProviderApi.getLastLocation 。大多数时候我得到 null 。但是后来我意识到所有的API都是为了在位置上发生变化而得到通知。但我想在应用程序中获取用户的当前确切位置（请考虑用户不要移动）。

如何获取Location对象，以便每次都不会获取 null 。

OnCreate（）方法中使用此代码来获取位置

  //获取对系统位置管理器的引用
 LocationManager locationManager =（LocationManager）this.getSystemService（Context.LOCATION_SERVICE）; 
 
 //定义一个响应位置更新的侦听器
 LocationListener locationListener = new LocationListener（）{
 public void onLocationChanged（Location location）{
 // //当网络位置提供者找到新的位置。 
 makeUseOfNewLocation（location）; 
 
 $ b $ public void onStatusChanged（String provider，int status，Bundle extras）{} 
 $ b $ public void onProviderEnabled（String provider）{} 
 
 public void onProviderDisabled（String provider）{} 
}; 
 
 //使用位置管理器注册侦听器以接收位置更新
 locationManager.requestLocationUpdates（LocationManager.NETWORK_PROVIDER，0，0，locationListener）; 
  

For my new app, I need to get user location using GPS. To do so, I am using fusedLocationProviderApi.getLastLocation. Most of the time I am getting null.

But then I realized that all the APIs are intended to get notified on Location changed. But I want to take current exact location of user (consider user not moving) in the app.

How do I get the Location object so that I don't get null each time.

解决方案

You can use this code in OnCreate() method to get location

// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {
    public void onLocationChanged(Location location) {
      // Called when a new location is found by the network location provider.
      makeUseOfNewLocation(location);
    }

    public void onStatusChanged(String provider, int status, Bundle extras) {}

    public void onProviderEnabled(String provider) {}

    public void onProviderDisabled(String provider) {}
  };

// Register the listener with the Location Manager to receive location updates
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

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