采用Timer+TimerTask+Handler+LocationManager这种定时的间隔定位

采用Timer+TimerTask+Handler+LocationManager这种定时的间隔定位时，在TimerTask中用handler发sendMessage,然后在Handler的handleMessage里面处理message并进行定位。这种方式是完全合理且正确的，
因为我也查了查，有人是这样说的：

Ok took me a while but I have found the solution to this,as the documentation says you can only request location updates from the location manager from a looper thread, that means that when the timer task is called you have to obtain a message and send the message to a handler and the handler would be responsible for requesting location updates.
来自于 http://www.questionhub.com/StackOverflow/3589963

 
于是，我又查了查官方文档中Reference对LocationManager的方法requestLocationUpdates (String provider, long minTime, float minDistance, LocationListener listener) 的解释，有这么一句话，如下：

The calling thread must be a Looper thread such as the main thread of the calling Activity.

所以，正好在Activity里面创建一个Handler时，就满足了上面的要求，创建一个没有形参的Handler时，文档中是这么解释的，如下：

Default constructor associates this handler with the queue for the current thread.

综上所述，这些是我能解释和查到的。