当我的谷歌地图视图活动重新获得焦点时出现问题（地图窗口下部有黑色区域）
我的应用程序有问题，它有很多活动，其中两个有谷歌地图视图。我的 A 活动有完整的地图视图，我的 B 活动有小地图视图。好的，当我处于 B 活动并有时按返回键直到返回 A 活动时，我的 A 活动的地图显示错误，窗口下部有一个黑色区域。只有当我从 B 活动按回时才会发生这种情况。
因此，我需要实现/覆盖 A 的 onResume() 方法来重新启动从 SRATCH 重新绘制所有内容的活动...喜欢再次执行 ONCREATE 方法，但我认为我不能再次调用它...或者我能？
我必须输入哪些代码才能从头开始重新绘制所有窗口？
我尝试了所有这些：
-mapView.requestLayout() -->它工作了一点，重新绘制地图，但通过缩放并显示 B 活动上显示的最后一张地图......没有意义：我不想要那样。不同的地图，不一定要显示相同的坐标和缩放比例，各有各的。
-mapView.invalidate() -->不起作用
-mapView.postInvaldiate() -->不起作用
i have a problem with my app, it haves a lot of activitys, two of them haves googlemap views. My A activity haves a full mapview and my B activity haves a small map view. OK, when i am on the B activity and press back key somethimes until i return to my A activity, the map of my A activity shows with errors, with a black zone in the down part of the window. THis only happens when i press back from the B activity.
Because this, i need to implement/override onResume() method of A to RESTART THE ACTIVITY TO REPAINT ALL FROM SRATCH.... LIKE TO DO AGAIN ONCREATE METHOD, but i think i can't call it again... or i can?
wich code i have to put to repaint all the window from scratch ?
i tryed with all this:
-mapView.requestLayout() --> it works a little, repaints the map but with the zoom and showing the last map showed on B activity... no sense :S i dont want that. Are different maps, not have to show the same coordinates and zoom, each one have his own.
-mapView.invalidate() --> doesn't works
-mapView.postInvaldiate() --> doesn't works
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不建议在同一进程中运行多个地图 (MapView)。通常，使用默认配置，所有活动（包括 MapActivities）都在同一进程中运行。
根据 api 文档，位于此处
http://code .google.com/android/add-ons/google-apis/reference/com/google/android/maps/MapActivity.html
每个进程仅支持一个 MapActivity。同时运行的多个 MapActivities 可能会以意想不到的方式产生干扰。
我在同一进程中使用多个 MapView 时遇到的问题：
应用程序中的不同地图，变化
第一张地图（例如：将其移动到
特定位置，切换卫星
视图）也反映在
第二张地图，好像是一样的
地图。
正确加载。部分
地图，或者完整的地图仍然存在
空的。
此处记录了一个缺陷：http://code.google.com/p/android/issues/detail?id=3756
解决方案/解决方法是将地图托管在不同的进程中：
Having multiple maps (MapViews) running in the same process is not adviced. Typically, using the default configuration, all Activities (including MapActivities) run within the same process.
According to the api docs, located here
http://code.google.com/android/add-ons/google-apis/reference/com/google/android/maps/MapActivity.html
Only one MapActivity is supported per process. Multiple MapActivities running simultaneously are likely to interfere in unexpected and undesired ways.
Issues I encountered with multiple MapViews within the same process :
different maps in the app, changes in
the first map (ex: moving it to a
certain position, toggling sattelite
view) also got reflected in the
second map, as if it was the same
map.
getting loaded properly. Portions of
the map, or the complete map remained
empty.
There is a defect logged here : http://code.google.com/p/android/issues/detail?id=3756
A solution / workaround is to host your maps in different processes :