手动添加位置更新在Eclipse中停止工作 [英] Manually added location updates stop working in Eclipse

问题描述

我正在使用1.5 Android应用程序。在Windows XP中开发Eclipse 3.4.2。我有一个MapView，请求更新等。

问题是在第一次手动注入GPS坐标之后，应用程序停止识别GPS坐标已发送。

  LocationManager lm =（LocationManager）getSystemService（Context.LOCATION_SERVICE）; 
 MapController mc = mapView.getController（）; 
 
 TextView locationText =（TextView）findViewById（R.id.LocationBar）; 
 
 LocationListener locationListener = new MyLocationListener（mc，itemizedOverlay，locationText）; 
 
 lm.requestLocationUpdates（
 LocationManager.GPS_PROVIDER，
 0，
 0，
 locationListener）; 
  

然后MyLocationListener只是更改TextView中的值以匹配新的GPS坐标。

  public void onLocationChanged（Location loc）{
 if（loc == null）{
 return; 
} 
 double lat = loc.getLatitude（）; 
 double lng = loc.getLongitude（）; 
 
 GeoPoint p = new GeoPoint（
（int）（lat * 1E6），
（int）（lng * 1E6））; 
 
 mc.animateTo（p）; 
 
 itemizedOverlay.addOverlay（new OverlayItem（p，title，snippet））; 
 
 String location = String.format（％f lat％f long，lat，lng）; 
 
 locationText.setText（location）; 
 
} 
  

我在onLocationChanged方法中添加了一些日志记录，只有看到我尝试发送更新的第一个时间。所有后续的不会触发onLocationChanged方法。

附加信息：

logcat输出如下：

  10-02 17：22：34.423：INFO / gps（6671）：提供者gps的状态已更改为1。其他：捆绑[mParcelledData.dataSize = 52] 
  

首次GPS更新是伪造的：

  10-02 17：22：49.383：INFO / gps（6671）：位置提供商提供的位置：位置[mProvider = gps，mTime = 1000，mLatitude = 25.0，mLongitude = 23.0，mHasAltitude =真，mAltitude = 0.0，mHasSpeed =假，MSPEED = 0.0，mHasBearing =假，mBearing = 0.0，mHasAccuracy =假，mAccuracy = 0.0，mExtras =捆绑[mParcelledData.dataSize = 52]] 
 10-02 17：22：49.444：INFO / gps（6671）：提供者gps的状态已更改为2.其他：捆绑[mParcelledData.dataSize = 52] 
  

根据 http：// deve loper.android.com/reference/android/location/LocationProvider.html#AVAILABLE ，该图贴图可用。

一旦可用设置，没有其他位置通过。似乎有点违反直觉。

解决方案

我相信你在仿真器的GPS驱动程序中遇到了一个错误。 b
$ b

1.5版SDK的解决方法包含在错误报告。从那里引用：

在模拟器中，在主屏幕上，按菜单 - >设置 - >
日期和时间 - >取消选中自动 - >选择时区，
并选择正确的时区（即您的）。

A 修复包含在1.6版本的SDK中。

I'm working on a 1.5 Android application. Developing in Eclipse 3.4.2 on Windows XP. I have a MapView, have requested updates, etc.

The problem is that after the first manually injected GPS coordinate, the app stops recognizing that a GPS coord has been sent.

LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);  
MapController mc = mapView.getController();

TextView locationText = (TextView) findViewById(R.id.LocationBar);

LocationListener locationListener = new MyLocationListener(mc, itemizedOverlay, locationText);

lm.requestLocationUpdates(
    LocationManager.GPS_PROVIDER, 
    0, 
    0, 
    locationListener);   

Then MyLocationListener simply changes the value in a TextView to match the new GPS coordinate.

public void onLocationChanged(Location loc) {
        if (loc == null) {
            return;
        }
        double lat = loc.getLatitude();
        double lng = loc.getLongitude();

        GeoPoint p = new GeoPoint(
            (int) (lat * 1E6), 
            (int) (lng * 1E6));

        mc.animateTo(p);

        itemizedOverlay.addOverlay(new OverlayItem(p, "title", "snippet"));

        String location = String.format("%f lat %f long", lat, lng);

        locationText.setText(location);

    }

I added some logging in the onLocationChanged method and it only ever sees a Location the first time that I attempt to send an update. All subsequent ones don't fire the onLocationChanged method.

Additional info:

The logcat output is as follows:

10-02 17:22:34.423: INFO/gps(6671): Provider gps is has status changed to 1. Extras: Bundle[mParcelledData.dataSize=52]

First GPS update is faked:

10-02 17:22:49.383: INFO/gps(6671): Location provided by location provider: Location[mProvider=gps,mTime=-1000,mLatitude=25.0,mLongitude=23.0,mHasAltitude=true,mAltitude=0.0,mHasSpeed=false,mSpeed=0.0,mHasBearing=false,mBearing=0.0,mHasAccuracy=false,mAccuracy=0.0,mExtras=Bundle[mParcelledData.dataSize=52]]
10-02 17:22:49.444: INFO/gps(6671): Provider gps is has status changed to 2. Extras: Bundle[mParcelledData.dataSize=52]

According to http://developer.android.com/reference/android/location/LocationProvider.html#AVAILABLE , that 2 maps to "Available".

As soon as that "Available" gets set, no other locations get passed through. Seems a bit counterintuitive.

解决方案

I believe you are experiencing a bug in the GPS driver of the emulator.

A workaround for the 1.5 versions of the SDK is included in the bug report. To quote from there:

In the emulator, on the Home Screen, press "Menu" -> "Settings" -> "Date & Time" -> Uncheck "Automatic" -> "Select Time Zone", and choose the right time zone (ie, yours).

A fix is included in the 1.6 release of the SDK.

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