android - 将 MapView 设置为特定宽度和高度后，Google API MapView OutOfMemory

Question

我搜索了这个问题，发现了一些关于相同但不知道如何解决问题的 stackoverflow 问题。

我创建了一个 Activity ，我想添加一个非常小的 map View (例如 140w X 70h)。这只是为了显示该地点所在位置的小预览。当你点击这个小 map View 时，你会得到一个新的膨胀到一个新的洞图 Activity 。

map View :

<com.google.android.maps.MapView android:id="@+id/mapview" 
                android:layout_width="140dip"
                android:layout_height="80dip"
                android:layout_below="@id/attributes"
                android:layout_alignParentRight="true"
                android:apiKey="****"
                android:paddingBottom="60dp"/>

日志:

05-30 14:34:53.758: ERROR/dalvikvm(1608): Out of memory: Heap Size=4039KB,   Allocated=2768KB, Bitmap Size=625KB
05-30 14:34:53.758: DEBUG/AndroidRuntime(1608): Shutting down VM
05-30 14:34:53.758: WARN/dalvikvm(1608): threadid=1: thread exiting with uncaught exception (group=0x400259f8)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608): FATAL EXCEPTION: main
05-30 14:34:53.768: ERROR/AndroidRuntime(1608): java.lang.OutOfMemoryError
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at com.google.googlenav.map.Map.resize(Unknown Source)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at com.google.android.maps.MapView.onMeasure(MapView.java:554)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.View.measure(View.java:8172)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:578)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:362)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.View.measure(View.java:8172)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:989)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.ScrollView.onMeasure(ScrollView.java:286)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.View.measure(View.java:8172)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:578)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:362)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.View.measure(View.java:8172)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.View.measure(View.java:8172)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.View.measure(View.java:8172)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.ViewRoot.performTraversals(ViewRoot.java:805)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1744)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.os.Looper.loop(Looper.java:144)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at android.app.ActivityThread.main(ActivityThread.java:4937)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at java.lang.reflect.Method.invokeNative(Native Method)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at java.lang.reflect.Method.invoke(Method.java:521)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-30 14:34:53.768: ERROR/AndroidRuntime(1608):     at dalvik.system.NativeStart.main(Native Method)

这是错误。当我使用 fill_parent 时它可以工作，但我不想要带有 fill_parent 的 map View 。

也许你们知道另一种方法来获取 map 上当前(或给定)位置的预览小图像作为图像。不能显示一个小 map View 吗？

谢谢

Answer 1

如果您只想显示没有交互的静态 map ，我推荐 static map api来自谷歌。你可以定义标记、中心、大小和一些标签，它会返回一个生成的图像，可以很容易地在 ImageView 中显示。这样做的好处:您不必只为一个小 map 图像调用完整的 MapView。没有内存或用户交互的开销。非常适合您的场景。