android MapView 总是在嵌套元素中导致 OutOfMemoryError [英] android MapView always causes an OutOfMemoryError in nested elements

问题描述

我正在尝试在一些嵌套元素中创建一个 MapView(目前没有任何叠加层).它基本上类似于 ScrollView ->相对布局 ->相对布局 ->地图视图

I am trying to create a MapView (currently without any overlays) inside some nested elements. It is basically something like ScrollView -> RelativeLayout -> RelativeLayout -> MapView

 <com.google.android.maps.MapView
android:id="@+id/mapview"
android:layout_width="420px"
android:layout_height="300px"
android:clickable="false"
android:apiKey="key"/>

对我来说似乎很好.我在启动时没有做任何其他事情，但它总是会导致以下情况:

Seems fine for me. There is nothing more that I do with it on startup but it always causes the following:

04-04 13:38:33.910: WARN/dalvikvm(13628): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628): FATAL EXCEPTION: main
04-04 13:38:33.996: ERROR/AndroidRuntime(13628): java.lang.OutOfMemoryError
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android_maps_conflict_avoidance.com.google.googlenav.map.Map.resize(Map.java:1368)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android_maps_conflict_avoidance.com.google.googlenav.map.Map.resize(Map.java:1337)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at com.google.android.maps.MapView.onMeasure(MapView.java:590)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:581)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:365)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:581)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:365)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:1072)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.ScrollView.onMeasure(ScrollView.java:296)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:531)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.View.measure(View.java:8313)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.ViewRoot.performTraversals(ViewRoot.java:839)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1859)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.os.Looper.loop(Looper.java:123)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at android.app.ActivityThread.main(ActivityThread.java:3647)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at java.lang.reflect.Method.invokeNative(Native Method)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at java.lang.reflect.Method.invoke(Method.java:507)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-04 13:38:33.996: ERROR/AndroidRuntime(13628):     at dalvik.system.NativeStart.main(Native Method)
04-04 13:38:34.027: WARN/ActivityManager(6000):   Force finishing activity package/.home
04-04 13:38:34.527: WARN/ActivityManager(6000): Activity pause timeout for HistoryRecord{405336d0 package/.home}

你知道为什么会这样，我能做些什么来摆脱它吗?我不能把它从那个视图中移开，因为它是我需要它的地方.

Do you have any idea why this is and what I can do to get rid of it? I can't take it out of that view as it is the place where I need it.

谢谢！

推荐答案

我发现了一些很简单的事情.

I found out something quite simple.

只需将 MapView 放在 FrameLayout 中.让 FraggeLayout 为 wrap_content |wrap_content 一切都很好:)

Just place the MapView inside a FrameLayout. Let the FramgeLayout be wrap_content | wrap_content and everything is fine :)

这个失败了:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <ScrollView android:layout_width="fill_parent" android:layout_height="fill_parent">

        <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content">

            <view android:layout_width="100dip" android:layout_height="90dip" class="com.google.android.maps.MapView"
                android:apiKey="@string/API_KEY" android:clickable="true" />

        </RelativeLayout>
    </ScrollView>
</RelativeLayout>

我得到以下堆栈跟踪:

java.lang.OutOfMemoryError
at com.google.googlenav.map.Map.resize(Unknown Source)
at com.google.android.maps.MapView.onMeasure(MapView.java:554)
at android.view.View.measure(View.java:8172)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:578)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:362)
at android.view.View.measure(View.java:8172)
at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:989)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
at android.widget.ScrollView.onMeasure(ScrollView.java:286)
at android.view.View.measure(View.java:8172)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:578)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:362)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
at android.view.View.measure(View.java:8172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3140)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
at android.view.View.measure(View.java:8172)
at android.view.ViewRoot.performTraversals(ViewRoot.java:805)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1744)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:144)
at android.app.ActivityThread.main(ActivityThread.java:4937)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)

这里有一个解决方案:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <ScrollView android:layout_width="fill_parent" android:layout_height="fill_parent">

        <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content">

            <FrameLayout android:layout_width="wrap_content" android:layout_height="wrap_content">

                <view android:layout_width="100dip" android:layout_height="90dip" class="com.google.android.maps.MapView"
                    android:apiKey="@string/API_KEY" android:clickable="true" />

            </FrameLayout>

        </RelativeLayout>
    </ScrollView>
</RelativeLayout>

您好，马可

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