Android的 - 麻烦越来越位置，只采用GPS提供的坐标 [英] Android - Trouble in getting location coordinates by only using GPS provider

问题描述

我是新来的机器人。所以，请原谅，如果我的问题很简单，帮我。

I am new to android. So please apologize if my question is simple and help me.

我开发一个Android应用程序中，我试图让用户位置的仅在使用GPS服务（正如我开发一个应用程序需要在Android设备甚至是没有互联网运行）。

I am developing an android app in which I try to get users location only using GPS service (As I am developing an app which needs to run in android devices even with no internet).

我的code为如下：

我的活动：

public class MyView extends Activity implements OnClickListener, Runnable
    {
       LocationManager itsLocationManager;
       LocationListener itsLocationListener;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
      itsLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
      itsLocationListener = new MyLocationListener(this, itsLocationManager);

      getLocationAndSendMessage();
    }

    private void getLocationAndSendMessage() 
    {
      try 
      {
        itsLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, itsLocationListener);
      } 
      catch (Exception theException) 
      {
        theException.printStackTrace();
        ToastMsgUtil.showErrorMessage("Problem in retrieving your current location! Please try again.", this);  
       }
     }

MyLocationListener.java：

public class MyLocationListener implements LocationListener
{
    Context itsContext;
    LocationManager itsLocationManager;

    public MyLocationListener(Context theContext, LocationManager theLocationManager) 
    {
        itsContext = theContext;
        itsLocationManager = theLocationManager;
    }

        @Override
    public void onLocationChanged(final Location theLocation) 
    {
                //My Location processing code
                itsLocationManager.removeUpdates(SafemateLocationListener.this);
         }
}

AndroidManifest.xml中

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

正如我前面所说，我只需要通过GPS获得的位置（如在用户手机没有网络）。

As I said above, I need to get location only through GPS (as no internet in users mobile).

• 在调试时，我发现我的没有收到任何位置更新在 onLocationChanged 方式，当我使用的 LocationManager.GPS_PROVIDER 。
• 然而，当我试着用 LocationManager.NETWORK_PROVIDER ，我收到位置更新。

• On debugging, I found that I am not receiving any location updates in onLocationChanged method when I am using LocationManager.GPS_PROVIDER.
• However, when I tried with LocationManager.NETWORK_PROVIDER, I receive location updates.

任何人都可以请说我做错了什么，在上述code？我错过了什么东西？

Can anyone please say what I did wrong in the above code? Have I missed any thing?

请帮助。谢谢你。

推荐答案

获取使用在一个稳定的全球定位系统，工作和兼容的方式是一个烂摊子正确的坐标。我记得有一个帖子在这里某处stackoverflow.com，但无法找到它的时刻。所以，我建议采取GPS相关code OUT的<一个href="http://sourceforge.net/p/libwlocate/$c$c/ci/641b5fa038398364c7fe3fc996744ae094f0cc49/tree/master/android/LocDemo/src/com/vwp/libwlocate/WLocate.java"相对=nofollow> WLocate.java 该工程，并使用所有已知的Andr​​oid版本。或者使用 libwlocate ，它封装了你要寻找的功能。

Getting correct coordinates using GPS in a stable, working and compatible way is a mess. I remember a posting somewhere here at stackoverflow.com but can't find it at the moment. So I'd suggest to take the GPS-related code out of WLocate.java which works using all known Android versions. Or use the libwlocate, it encapsulates the functionality you're looking for.

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