位置是空 - 它是在实际设备相同的行为？ [英] location is null - is it the same behavior in real device?

问题描述

据我没有真正的Andr​​oid手机我想问这个问题。
在我MapActivity这是从LocationListener的延长，onCreate方法初始化位置元素如下：

Hey guys as far as i don't have real android phone I wanted to ask this question. in my MapActivity which is extended from LocationListener, the onCreate method initializes "location" element as following :

location = locationManager.getLastKnownLocation(provider);

当我开始我的应用程序，该位置始终空，直到我从DDMS送分。
我想知道，在实际的设​​备会是什么行为？

When I start my app, the location is always null until I send points from DDMS. I wanted to know, in real device what would be the behavior?

推荐答案

getLastKnownLocation（）只获得由GPS返回最后的位置。如果GPS从未得到一个位置锁定，这将是空。你不能指望这种方法在所有的返回值，如果这样做，可能是非常过时。

getLastKnownLocation() only gets the location last returned by the GPS. If the gps has never gotten a location fix, it will be null. You can't count on this method returning a value at all, and if it does it might be extremely out of date.

如果你想获得的实际位置，你需要设置一个LocationListener的。

If you want to get the actual location, you need to set up a locationlistener.

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