android - 发布了未知的位图引用

Question

我正在尝试在 Google map v2 中设置标记图标。我正在通过网络下载一些图像并在代码中更改它们的背景。之后我将它们设置为标记的图标。第一次创建 map 时它工作正常，但旋转后出现异常。

我运行它的 Android 版本:4.3

我的代码如下:

        UrlImageViewHelper.loadUrlDrawable(TuvaletlerMapActivity.this,
                iconUrl, new UrlImageViewCallback() {

                    @Override
                    public void onLoaded(ImageView iv, Bitmap bm,
                            String arg2, boolean arg3) {
                        Bitmap bitmap = VenuesHelper.iconizeBitmap(bm);
                        marker.setIcon(BitmapDescriptorFactory
                                .fromBitmap(bitmap));
                    }
                });

和VenuesHelper.iconizeBitmap()如下:

public static Bitmap iconizeBitmap(Bitmap bm) {
    Bitmap bitmap = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(),
            bm.getConfig());
    Canvas canvas = new Canvas(bitmap);
    canvas.drawColor(Color.parseColor("#33B5E5"));
    canvas.drawBitmap(bm, 0, 0, null);
    return bitmap;
}

堆栈轨迹如下:

08-07 10:16:50.684: E/AndroidRuntime(19001): FATAL EXCEPTION: main
08-07 10:16:50.684: E/AndroidRuntime(19001): java.lang.IllegalArgumentException: Released unknown bitmap reference
08-07 10:16:50.684: E/AndroidRuntime(19001):    at maps.as.i.a(Unknown Source)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at maps.ah.o.b(Unknown Source)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at maps.ah.bn.a(Unknown Source)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at bix.onTransact(SourceFile:204)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.os.Binder.transact(Binder.java:347)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.google.android.gms.internal.dm$a$a.f(Unknown Source)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.google.android.gms.maps.model.Marker.setIcon(Unknown Source)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.behlul.tuvaletbul.TuvaletlerMapActivity$TuvaletliYukleCallbacks$1.onLoaded(TuvaletlerMapActivity.java:250)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper$2.run(UrlImageViewHelper.java:615)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper$3.onPostExecute(UrlImageViewHelper.java:653)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.koushikdutta.urlimageviewhelper.UrlImageViewHelper$3.onPostExecute(UrlImageViewHelper.java:1)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.os.AsyncTask.finish(AsyncTask.java:631)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.os.AsyncTask.access$600(AsyncTask.java:177)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.os.Handler.dispatchMessage(Handler.java:99)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.os.Looper.loop(Looper.java:137)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at android.app.ActivityThread.main(ActivityThread.java:5103)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at java.lang.reflect.Method.invokeNative(Native Method)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at java.lang.reflect.Method.invoke(Method.java:525)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-07 10:16:50.684: E/AndroidRuntime(19001):    at dalvik.system.NativeStart.main(Native Method)

Answer 1

我遇到了类似的问题，当我尝试重新加载执行“myMarker.setIcon()”的标记时，然后在一些刷新之后应用程序遇到“java.lang.IllegalArgumentException:发布了未知位图引用”。

我发现调用“myMap.clear()”来清除所有标记是个问题，实际上在函数文档中您可以阅读“从 map 中删除所有标记、折线、多边形、叠加层等”。

好吧，“etc”似乎比我预期的要好......

为了解决这个问题，我使用了一个自定义函数来遍历保存在 HashMap 中的所有标记并一个一个地删除，仅此而已，我的代码中不再有类似的异常。

您可以遍历所有标记以删除它们，如下所示:

/**
 * Alternative to myMap.clear() to avoid undesired exceptions
 */
private void clearAllMapMarkers() {
    // Clearing the current map markers being shown
    // Note that we do not use myMap.clear() because that incur in the exception
    // "java.lang.IllegalArgumentException: Released unknown bitmap reference"
    try {
        for (Map.Entry<String, Marker> markerEntry : mMarkerList.entrySet()) {
            markerEntry.getValue().remove();
        }
    } catch (IllegalArgumentException e) {
        // Manage here the exception (never raised but who knows...)
    }
}