Android的位图ImageView的内存泄漏位图、内存、Android、ImageView

由网友(情感洁癖)分享简介：我把4×4 ImageView的一个活动（BoardActivity），并且用户可以通过单击它们改变图像。随着HTC Desire的（安卓2.2.2），我在大约30分钟的密集使用率 - 编辑了OOM（内存不足）：本次活动的第16届开始 - ，但不允许其他设备产生这样的（机器人2.1和Android 2.2.1）。是...

我把4×4 ImageView的一个活动（BoardActivity），并且用户可以通过单击它们改变图像。随着HTC Desire的（安卓2.2.2），我在大约30分钟的密集使用率 - 编辑了OOM（内存不足）：本次活动的第16届开始 - ，但不允许其他设备产生这样的（机器人2.1和Android 2.2.1）。是否有可能，我做了一些错误的位图/ ImageView的使用率，并导致此错误？首先，我加载所有资源ID成图：

I put 4x4 imageView to an activity(BoardActivity), and user can change the images by clicking them. With HTC Desire (Android 2.2.2), I got OOM(Out Of Memory) in about 30 minutes of intensive useage - 16th start of this activity-, but no other devices produces this (android 2.1, and android 2.2.1). Is it possible, that I made some mistake with the bitmap/imageview useage and that causes this error? First, I load all resource ID into a map:

private Map<String, Integer> imageResourceMap;
imageResourceMap = new HashMap<String, Integer>();
        imageResourceMap.put("a", R.drawable.a);
        imageResourceMap.put("b", R.drawable.b);
        imageResourceMap.put("c", R.drawable.c);
//... I store 55 drawable's resourceId in this map

于是我调整，每一个图像保存为位图，psented在地图重新$ P $：

Then I resize and save every image into bitmap, represented in Map:

private static Map<String, Bitmap> imageBitmap;

    private void loadBitmaps(int imagesSize) {

    for (String s : imageResourceMap.keySet()) {
        Bitmap tmp = getBitmapFromRes(imageResourceMap.get(s), imagesSize);
        imageBitmap.put(s, tmp);
    }
}

private Bitmap getBitmapFromRes(int resId, int imageSize) {
    Bitmap b = null;
    try {
        // Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;

        InputStream fis = getResources().openRawResource(resId);
        BitmapFactory.decodeStream(fis, null, o);
        fis.close();

        int scale = 1;
        if (o.outHeight > imageSize || o.outWidth > imageSize) {
            scale = (int) Math.pow(2, (int) Math.round(Math.log(imageSize / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
        }

        // Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        fis = getResources().openRawResource(resId);
        b = BitmapFactory.decodeStream(fis, null, o2);
        fis.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return b;
}

我一直在数组中的imageViews，并初始化使用此功能的所有图片：

I keep the imageViews in an array, and init all images with this function:

private static ImageView[][] imageViews;

private ImageView getImage(String name) {
        MyImageView item = new MyImageView(this, i, j, c + "");
        item.setImageBitmap(imageBitmap.get(name));
        item.setAdjustViewBounds(true);
        return item;
    }

当我需要改变形象，我简单的修改它的资源：

When I need to change an image, I simple change its resource:

imageViews[i][j].setImageBitmap(imageBitmap.get("a"));

和权利之前，我完成了活动，我回收位图：

And right before I finish the activity, I recycle the bitmap map:

private void recycleImageBitmaps() {
    for (Bitmap b : imageBitmap.values()) {
        if (b != null) {
            b.recycle();
        }
    }

}

在AndroidManifest.xml中我宣布本次活动singleTask：

In AndroidManifest.xml I declared this activity "singleTask":

<activity android:name=".game.board.BoardActivity" android:launchMode="singleTask">
    </activity>

在此应用程序（游戏），我们重新开始这一活动的几次... 我是怎么了？可这会导致内存不足的错误？

In this application(game), we reopen this activity a several times... What did I wrong? Can this cause the Out Of Memory error?

修正更正了getBitmapFromRes是这样的：

CORRECTION Corrected the getBitmapFromRes like this:

private Bitmap getBitmapFromRes(int resId, int imageSize) {
    Bitmap tmp = null;
    Bitmap b = null;
    try {
        // Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;

        InputStream fis = getResources().openRawResource(resId);
        tmp = BitmapFactory.decodeStream(fis, null, o);
        fis.close();

        int scale = 1;
        if (o.outHeight > imageSize || o.outWidth > imageSize) {
            scale = (int) Math.pow(2, (int) Math.round(Math.log(imageSize / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
        }

        // Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        fis = getResources().openRawResource(resId);
        b = BitmapFactory.decodeStream(fis, null, o2);
        fis.close();
    } catch (IOException e) {
        e.printStackTrace();
    }finally{
        if(tmp != null){
            tmp.recycle();
            tmp = null;
        }
    }
    return b;
}

HTC仍然坠毁本次活动的第11个开始。

HTC still crashed at the 11th start of this activity.

编辑：从活动（MenuActivity）本次活动（BoardActivity）推出，其中有4个ImageButton的，并且是一个Tabhost活动。该imageButtons的声明是这样的：

This activity(BoardActivity) launch from an Activity(MenuActivity), which have 4 imageButton, and is in a Tabhost activity. The imageButtons declarations look like this:

<ImageButton
    android:id="@+id/game_menu_CreateButton"
    android:layout_width="120dip" 
    android:layout_height="120dip"
    android:layout_alignRight="@+id/textView1"
    android:layout_alignTop="@+id/textView1"
    android:background="@drawable/create" 
    android:layout_marginRight="1sp"
    android:layout_marginTop="10sp"
     />

当我开始从MenuActivity的BoardActivity，我不叫完成（）在MenuActivity，当我打电话完成（）在BoardActivity，我不开始新的意图，所以它只是返回到已经打开的MenuActivity。而16轮，我得到了OOM。

When I start the BoardActivity from MenuActivity, I don't call finish() at MenuActivity, and when I call finish() at the BoardActivity, I don't start a new intent, so it just return to the already opened MenuActivity. And the 16 round of this, I got the OOM.

Android的位图ImageView的内存泄漏位图、内存、Android、ImageView

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