位图的大小超过旧设备VM预算 [英] bitmap size exceeds VM budget on old devices

问题描述

我收到了BitmapFactory异常。我读过的其他问题，唯一的解决办法是我载入图像的scaledown版本，但对我来说，我需要用一个掐显示它们在全分辨率缩放系统（图像传单，包括文字） 。这些图像仅466x700px为300ko，它们显示是这样的：

I'm getting an Exception in the BitmapFactory. I've read on the other questions that the only solution is to load a scaledown version of my images, but in my case, I need to display them in full resolution with a pinch to zoom system (the images are flyers that include text). The images are only 466x700px for 300ko, they are displayed like this :

Viewpager类：

Viewpager class :

@Override
public View instantiateItem(ViewGroup container, int position) {
    ImageView imageView = new ImageView(container.getContext());
    PhotoViewAttacher attacher = new PhotoViewAttacher(imageView);
    try {
        Drawable toRecycle = imageView.getDrawable();
        if (toRecycle != null) {
            ((BitmapDrawable) imageView.getDrawable()).getBitmap().recycle();
        }
        imageView.setImageDrawable(getCat()[position]);
    } catch (IOException e) {
        e.printStackTrace();
    }
    attacher.update();
    container.addView(imageView);
    return imageView;
}

而getCat（）：

And the getCat() :

public static Drawable[] getTheme_amiante_s_carreleur(Context ctx) throws IOException {
    ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(ctx, 2, 1);
    Drawable[] theme_amiante_s_carreleur = {
        Drawable.createFromStream(expansionFile.getInputStream("amiante_carreleur_s_1.png"), "src"),
        Drawable.createFromStream(expansionFile.getInputStream("amiante_carreleur_s_2.png"), "src"),
        Drawable.createFromStream(expansionFile.getInputStream("amiante_carreleur_s_3.png"), "src"),
        Drawable.createFromStream(expansionFile.getInputStream("amiante_carreleur_s_4.png"), "src"),
        Drawable.createFromStream(expansionFile.getInputStream("amiante_carreleur_s_5.png"), "src"), };
    return theme_amiante_s_carreleur;
}

它工作正常，在我的Nexus 4，但在GALAXY S2或LG擎天柱黑色，系统将迅速强制关闭因内存不足的错误：

It works fine on my Nexus 4, but on a Galaxy S2 or a LG Optimus Black, the system quickly force close due to a Out Of Memory error :

java.lang.OutOfMemoryError: bitmap size exceeds VM budget 
at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:573) 
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:439) 
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697) 
at android.graphics.drawable.Drawable.createFromStream(Drawable.java:657) 
at com.ctai.iris.ListeImages.getTheme_formation_ce_obligatoires(ListeImages.java:1163) 
at com.ctai.iris.ImageViewLow.getCat(ImageViewLow.java:186) 
at com.ctai.iris.ImageViewLow$SamplePagerAdapter.instantiateItem(ImageViewLow.java:77) 
at com.ctai.iris.ImageViewLow$SamplePagerAdapter.instantiateItem(ImageViewLow.java:1) 
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:801) 
at android.support.v4.view.ViewPager.populate(ViewPager.java:992) 
at android.support.v4.view.ViewPager.populate(ViewPager.java:881) 
at android.support.v4.view.ViewPager$3.run(ViewPager.java:237) 
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92) 
at android.os.Looper.loop(Looper.java:130) 
at android.app.ActivityThread.main(ActivityThread.java:3691) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:507) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
at dalvik.system.NativeStart.main(Native Method)

任何想法如何，我可以处理这个问题？

Any idea how I can handle this problem ?

推荐答案

回收位图时不使用。 COM preSS位图，以减少内存使用情况。看看ATH这个链接。 http://developer.android.com/training/displaying-bitmaps/load -bitmap.html 。

Recycle bitmaps when not in use. Compress the bitmap to reduce memory usage. Have a look ath this link. http://developer.android.com/training/displaying-bitmaps/load-bitmap.html.

使用MAT分析仪来检查多少内存使用位图。

Use a MAT Analyzer to check how much memory is used by bitmap.

检查链接。内存管理，以及如何谈判，以使用MAT查找内存泄漏。 http://www.youtube.com/watch?v=_CruQY55HOk 。

Check the link. Talks about memory management and how to use MAT to find memory leaks. http://www.youtube.com/watch?v=_CruQY55HOk.

另外删除静态的可绘。我不知道，但不妨一试。

Also remove the static for Drawables. I am not sure, but give it a try.

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