在android中加载mapview时出现内存不足异常

Question

在我的应用程序中，我有根据用户方向旋转的地图视图。为此，我将地图视图的大小设置得非常大，它跨越了设备的宽度和高度。但它在设备中完美运行，但在模拟器中显示内存不足异常。我知道这是因为模拟器的堆内存不足。

所有设备都有更多的堆内存吗？或者任何解决方案都可以解决这个问题？

我的定位输出

07-05 12:32:49.982: E/AndroidRuntime(907): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.graphics.Bitmap.nativeCreate(Native Method)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.graphics.Bitmap.createBitmap(Bitmap.java:468)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.android.maps.StreetViewRenderer.generateNewTileImage(StreetViewRenderer.java:120)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.android.maps.StreetViewRenderer.renderTile(StreetViewRenderer.java:88)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.android.maps.AndroidTileOverlayRenderer.renderTile(AndroidTileOverlayRenderer.java:62)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.googlenav.map.Map.drawTile(Unknown Source)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.googlenav.map.Map.drawMapBackground(Unknown Source)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.googlenav.map.Map.drawMap(Unknown Source)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.android.maps.MapView.drawMap(MapView.java:1048)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.google.android.maps.MapView.onDraw(MapView.java:486)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.View.draw(View.java:6740)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1640)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.trafficmate.utils.RotateView.dispatchDraw(RotateView.java:48)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.drawChild(ViewGroup.java:1638)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.View.draw(View.java:6743)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.widget.FrameLayout.draw(FrameLayout.java:352)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1842)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewRoot.draw(ViewRoot.java:1407)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewRoot.performTraversals(ViewRoot.java:1163)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1727)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.os.Looper.loop(Looper.java:123)
07-05 12:32:49.982: E/AndroidRuntime(907):  at android.app.ActivityThread.main(ActivityThread.java:4627)
07-05 12:32:49.982: E/AndroidRuntime(907):  at java.lang.reflect.Method.invokeNative(Native Method)
07-05 12:32:49.982: E/AndroidRuntime(907):  at java.lang.reflect.Method.invoke(Method.java:521)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-05 12:32:49.982: E/AndroidRuntime(907):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-05 12:32:49.982: E/AndroidRuntime(907):  at dalvik.system.NativeStart.main(Native Method)

我将 RotateView 与 Extenting View Group 一起使用

旋转视图的onMeasure方法

private static final float SQ2 = 3.5f;
  @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int w = getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec);
        int h = getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec);
       //int w=SonarView.display.getWidth();
       //int h=SonarView.display.getHeight();
        int sizeSpec;
        if (w > h) {
            sizeSpec = MeasureSpec.makeMeasureSpec((int) (w * SQ2), MeasureSpec.EXACTLY);
        } else {
            sizeSpec = MeasureSpec.makeMeasureSpec((int) (h * SQ2), MeasureSpec.EXACTLY);
        }
        final int count = getChildCount();
        for (int i = 0; i < count; i++) {
            getChildAt(i).measure(sizeSpec, sizeSpec);
        }
        Log.e("sizeSpec",""+sizeSpec);

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

我的布局是

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
>
<com.trafficmate.utils.RotateView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/rview"
 >
<com.google.android.maps.MapView 
android:id="@+id/mapview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:apiKey="0947Aqi7xG3QScZEvvOLtLJNtVss6PFjAquxZ2w"
android:clickable="true" 
android:saveEnabled="true"
/>

</com.trafficmate.utils.RotateView>

</FrameLayout>

Answer 1

您可以通过将 android:largeHeap="true" 添加到您的应用程序标记来增加堆大小。模拟器对于常规堆和大堆具有相同的堆大小，因此您必须在设备上检查它。

通过 ActivityManager.getLargeMemoryClass() 进行检查；