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我正在为安卓开发一款纸牌游戏。当我尝试加载一些图像时出现 OutOfMemoryError。我已经阅读了很多关于 android 中这个常见和常见问题的答案，但是当要加载的图像非常大时，它们都会处理。我自己管理屏幕旋转，所以我不会重新启动新的旋转活动。我已经读过这个问题：

由于大位图大小导致内存不足异常

Android：图库中的内存不足异常

Android处理图像处理内存不足异常

我不明白的一件事是，如果我在 res 文件夹中的所有图像（png 文件）的大小总和约为 800 kb。但在 Logcat 中，我注意到创建游戏（加载卡图像）的大小迅速超过 20 mb。我使用：此代码加载图像

Resources r = this.getContext().getResources();
CardView.loadCardImages(CardView.EAlone.CARDS, 1027, 615, r.getDrawable(R.drawable.cards));
CardView.loadCardImages(CardView.EAlone.GREEN, mCardWidth, mCardHeight, r.getDrawable(R.drawable.green));
CardView.loadCardImages(CardView.EAlone.RED, mCardWidth, mCardHeight, r.getDrawable(R.drawable.red));
CardView.loadCardImages(CardView.EAlone.WHITE, mCardWidth, mCardHeight, r.getDrawable(R.drawable.white));

CardView.LoadCardImages：

public static void loadCardImages(EAlone mode, int widthPixels, int heightPixels, Drawable tile) {

    Canvas canvas;
    switch (mode)
    {
    case GREEN:
        mAloneGreen = Bitmap.createBitmap(widthPixels, heightPixels, Bitmap.Config.ARGB_8888);
        canvas = new Canvas(mAloneGreen);
        break;
    case RED:
        mAloneRed = Bitmap.createBitmap(widthPixels, heightPixels, Bitmap.Config.ARGB_8888);
        canvas = new Canvas(mAloneRed);
        break;
    case WHITE:
        mAloneWhite = Bitmap.createBitmap(widthPixels, heightPixels, Bitmap.Config.ARGB_8888);
        canvas = new Canvas(mAloneWhite);
        break;
    default:
        mcardImages = Bitmap.createBitmap(widthPixels, heightPixels, Bitmap.Config.ARGB_8888);
        canvas = new Canvas(mcardImages);
    }
    tile.setBounds(0, 0, widthPixels, heightPixels);
    tile.draw(canvas);
    tile.setCallback(null);
}

mCardimages 包含所有卡片面。然后我使用此文件通过从文件中裁剪所需的卡片来创建单张卡片。加载后，我加载了一些在我的父视图中具有透明度的其他图像。

dealerSign = new ImageView(getContext());
dealerSign.setImageResource(R.drawable.dealer);
dealerSign.setAdjustViewBounds(true);
dealerSign.setLayoutParams(new Gallery.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

我在 setImageResource 行收到错误。

04-09 22:04:37.226: E/AndroidRuntime(722): FATAL EXCEPTION: main
04-09 22:04:37.226: E/AndroidRuntime(722): java.lang.OutOfMemoryError
04-09 22:04:37.226: E/AndroidRuntime(722):  at    android.graphics.Bitmap.nativeCreate(Native Method)
04-09 22:04:37.226: E/AndroidRuntime(722):  at    android.graphics.Bitmap.createBitmap(Bitmap.java:605)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:524)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:499)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:351)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:767)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.content.res.Resources.loadDrawable(Resources.java:1937)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.content.res.Resources.getDrawable(Resources.java:664)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.widget.ImageView.resolveUri(ImageView.java:537)
04-09 22:04:37.226: E/AndroidRuntime(722):  at android.widget.ImageView.setImageResource(ImageView.java:310)
04-09 22:04:37.226: E/AndroidRuntime(722):  at game.spathi.GameView.init(GameView.java:261)
04-09 22:04:37.226: E/AndroidRuntime(722):  at game.spathi.Game.onCreate(Game.java:92)
...

我在这里做错了什么？

谢谢！

4

1 回答 1

3

尝试一下 -

Bitmap yourBitmap;      
ByteArrayOutputStream baos = new ByteArrayOutputStream();


offerImage.compress(Bitmap.CompressFormat.PNG, 0, baos);
byte[] img = shrinkBitmap(baos.toByteArray());

//convert this byte image to bitmap and load it...

private byte[] shrinkBitmap(byte[] data){
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inSampleSize = 2; //try to decrease decoded image
    options.inPurgeable = true; //purgeable to disk
    Bitmap bitmap = Bitmap.createScaledBitmap(BitmapFactory.decodeByteArray(data, 0, data.length, options), 100, 100, true);
    ByteArrayOutputStream buf = new ByteArrayOutputStream();
    bitmap.compress(CompressFormat.JPEG, 20, buf);

    return(buf.toByteArray());
}
于 2012-04-10T09:26:16.127 回答