如何实现＆QUOT;跟着我＆QUOT;使用MyLocationOverlay类？ [英] How do you implement "follow me" using the MyLocationOverlay class?

问题描述

我提出的应用程序，它显示了使用MyLocationOverlay类的用户的当前位置。然而，当用户改变他的位置时，标记不recentered。我如何贯彻落实跟我学功能？

I made an application which shows the current location of the user using the MyLocationOverlay class. However, when the user changes his location, the marker is not recentered. How do I implement the "follow me" feature?

我想制作的LocationManager以尽可能频繁地更新，然后调用onLocationChanged方法里面animateTo方法，但它似乎是一个不好解决。是否有这样做的方法吗？

I am thinking of making the LocationManager to update as frequently as possible and then calling the animateTo method inside the onLocationChanged method but it seems to be a bad solution. Is there any way of doing it?

推荐答案

我做的是延长 MyLocationOverlay 作为一个内部类的我的 MapActivity 。然后，我重写 onLocationChanged ，并使用 animateTo 我的 MapController 在该方法

What I do is extend MyLocationOverlay as an inner class of my MapActivity. Then, I override onLocationChanged and use animateTo on my MapController in that method.

@Override
public synchronized void onLocationChanged(Location location) {
    if (location != null) {
        mapController.animateTo(
                new GeoPoint((int) (location.getLatitude()*1e6),
                             (int) (location.getLongitude()*1e6));
    }
    super.onLocationChanged(location);
}

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