android中的GPS_PROVIDER或NETWORK_PROVIDER的位置不一致 [英] Location from GPS_PROVIDER or NETWORK_PROVIDER in android is not consistent

问题描述

我正在尝试做什么
使用服务，以便只要应用程序正在运行位置可以被检索

我面临的问题

• 即使我在相同的位置很长时间，每次纬度，经度不同的准确性等级


• 因此，即使用户没有更改他的位置，如果我正在绘制 GoogleMap 中的 Location ，它使得我的缩放级别变得非常接近 18.0f


• mGoogleMap.animateCamera（CameraUpdateFactory.newLatLngZoom （currentLatLon，18.0f））;

我尝试了 stackove rflow Link One 和计算器链接两个

但即使我坐在相同的位置，并定期检索位置，纬度和经度差异是这样的， 在每次经过结束时查看突出显示的值：

纬度：12.8379 283 长：经度：77.6647 266

纬度：12.8379 233 长：经度：77.6647 368

纬度：12.8379 285 长：经度：77.6647 506

纬度：12.8379 245 长：经度：77.6647 546

• 我尝试了这种方法 GITHub参考资料
  

但仍然每次精度不同，Lat Lon略有变化。

由于我的代码试验与链接中提到的完全相同，我不只是在这里复制粘贴。这将得到解决

解决方案

GPS的精确度并不是绝对的，所以即使是静态设备也会在连续读数中显示不同位置。请尝试以下操作：

1. 您可以添加一个方法，通过读取加速度计来检测手机是否静止 - 如果两个读数大于某个阈值 - 设备正在移动。如果它太小 - 它不会移动。要确定增量 - 将设备放在一张桌子上，看看你得到了什么值。


2. 忽略近距离读数 - 以高精度（< 20m或您确定的其他值）并将其用作参考 - 如果下一次读数给出非常小的距离，接近参考（<10m或其他值），则忽略它。如果它更大 - 将其设置为新的参考。

What I am trying to do

• Get users location at specified interval using a Service so that as long as application is running Location can be retrieved

Problem I am facing

• Even if I am in same location for long time, each time the Latitude , Longitude changes with different Accuracy levels
• Due to this, even if user has not changed his location, if I am plotting the Location in GoogleMap it makes jump to very near by places being my zoom level 18.0f
• mGoogleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(currentLatLon, 18.0f));

I have tried approaches mentioned in stackoverflow Link One and stackoverflow Link Two

But even though I am sitting in the same location and retrieving location in regular interval, the Lat and Lon differs like this , see the highlighted values at end of every lat lon:

Latitude: 12.8379283 Long: Longitude: 77.6647266

Latitude: 12.8379233 Long: Longitude: 77.6647368

Latitude: 12.8379285 Long: Longitude: 77.6647506

Latitude: 12.8379245 Long: Longitude: 77.6647546

• Now I experimented with this approach GITHub reference

but still every time the Accuracy differs and Lat Lon slightly changes.

As my code trials are exactly same as mentioned in link's I am not just copy pasting here. How can this be resolved

解决方案

The accuracy of the GPS is not absolute, so even a static device will show different locations in successive readings. Try the following:

1. You can add a method that detects if the mobile is static or not, by reading he accelerometer - if the delta between two readings is bigger than some threshold - the device is moving. If it's too small - it's not moving. To determine the delta - put the device on a table and see what values you get.
2. Ignore close readings - Take the first reading with good accuracy (<20m or other value you determine) and use it as a reference - if the next reading gives a very small distance, close to the reference (<10m or other value), ignore it. If it's bigger - set it as the new reference.

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