在将图像加载到位图对象时出现奇怪的内存溢出问题

我有一个ListView，每行上有两个图像按钮。当用户单击列表行时，它将启动一个新活动。我不得不建立我自己的标签，因为相机布局的问题。为结果启动的活动是一个映射。如果我点击我的按钮来启动图像预览(从SD卡加载图像)，应用程序从活动返回到ListView活动到结果处理程序，重新启动我的新活动，这只不过是一个图像小部件。

ListView上的图像预览是用光标和ListAdapter完成的。这使得它非常简单，但我不确定我如何可以把一个调整大小的图像(即较小的位大小而不是像素作为图像按钮的src)。我只是调整了从手机摄像头拍下来的图片的大小。

问题是，当它试图返回并重新启动第二个活动时，我得到一个OutOfMemoryError。

是否有一种方法，我可以轻松地构建列表适配器行，在那里我可以调整大小的飞行(位)?

这将是可取的，因为我还需要对每行中的小部件/元素的属性做出一些更改，因为我无法选择一行与触摸屏，因为焦点问题。(我会用滚轮。)

我知道我可以做带外调整并保存我的图像，但这不是我真正想做的，但一些示例代码会很好。

当我在ListView上禁用图像时，它又可以正常工作了。

供你参考:我是这样做的:

String[] from = new String[] { DBHelper.KEY_BUSINESSNAME, DBHelper.KEY_ADDRESS,
    DBHelper.KEY_CITY, DBHelper.KEY_GPSLONG, DBHelper.KEY_GPSLAT,
    DBHelper.KEY_IMAGEFILENAME  + ""};
int[] to = new int[] { R.id.businessname, R.id.address, R.id.city, R.id.gpslong,
    R.id.gpslat, R.id.imagefilename };
notes = new SimpleCursorAdapter(this, R.layout.notes_row, c, from, to);
setListAdapter(notes);

其中R.id.imagefilename是一个ButtonImage。

这是我的LogCat:

01-25 05:05:49.877: ERROR/dalvikvm-heap(3896): 6291456-byte external allocation too large for this process.
01-25 05:05:49.877: ERROR/(3896): VM wont let us allocate 6291456 bytes
01-25 05:05:49.877: ERROR/AndroidRuntime(3896): Uncaught handler: thread main exiting due to uncaught exception
01-25 05:05:49.917: ERROR/AndroidRuntime(3896): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:304)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:149)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:174)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.graphics.drawable.Drawable.createFromPath(Drawable.java:729)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.ImageView.resolveUri(ImageView.java:484)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.ImageView.setImageURI(ImageView.java:281)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.SimpleCursorAdapter.setViewImage(SimpleCursorAdapter.java:183)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.SimpleCursorAdapter.bindView(SimpleCursorAdapter.java:129)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.CursorAdapter.getView(CursorAdapter.java:150)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.AbsListView.obtainView(AbsListView.java:1057)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.ListView.makeAndAddView(ListView.java:1616)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.ListView.fillSpecific(ListView.java:1177)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.ListView.layoutChildren(ListView.java:1454)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.AbsListView.onLayout(AbsListView.java:937)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.View.layout(View.java:5611)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1108)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.LinearLayout.onLayout(LinearLayout.java:922)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.View.layout(View.java:5611)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.FrameLayout.onLayout(FrameLayout.java:294)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.View.layout(View.java:5611)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:999)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.LinearLayout.onLayout(LinearLayout.java:920)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.View.layout(View.java:5611)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.widget.FrameLayout.onLayout(FrameLayout.java:294)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.View.layout(View.java:5611)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.ViewRoot.performTraversals(ViewRoot.java:771)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1103)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.os.Handler.dispatchMessage(Handler.java:88)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.os.Looper.loop(Looper.java:123)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at android.app.ActivityThread.main(ActivityThread.java:3742)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at java.lang.reflect.Method.invoke(Method.java:515)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:497)
01-25 05:05:49.917: ERROR/AndroidRuntime(3896):     at dalvik.system.NativeStart.main(Native Method)
01-25 05:10:01.127: ERROR/AndroidRuntime(3943): ERROR: thread attach failed

我也有一个新的错误时显示的图像:

22:13:18.594: DEBUG/skia(4204): xxxxxxxxxxx jpeg error 20 Improper call to JPEG library in state %d
22:13:18.604: INFO/System.out(4204): resolveUri failed on bad bitmap uri: 
22:13:18.694: ERROR/dalvikvm-heap(4204): 6291456-byte external allocation too large for this process.
22:13:18.694: ERROR/(4204): VM won't let us allocate 6291456 bytes
22:13:18.694: DEBUG/skia(4204): xxxxxxxxxxxxxxxxxxxx allocPixelRef failed

当前回答

避免内存泄漏或位图OOM的最佳实践

不要为一个Context / Activity保留长时间的位图引用。如果你在你的应用程序中使用一个大的位图作为背景或其他东西，那么不要把完整的图像拉到主存中。您可以使用位图的insample size属性来获取屏幕所需的大小。清洁位图引用一旦不再使用。

2019-06-25 05:33:01

其他回答

我已经通过以下方式解决了同样的问题。

Bitmap b = null;
Drawable d;
ImageView i = new ImageView(mContext);
try {
    b = Bitmap.createBitmap(320,424,Bitmap.Config.RGB_565);
    b.eraseColor(0xFFFFFFFF);
    Rect r = new Rect(0, 0,320 , 424);
    Canvas c = new Canvas(b);
    Paint p = new Paint();
    p.setColor(0xFFC0C0C0);
    c.drawRect(r, p);
    d = mContext.getResources().getDrawable(mImageIds[position]);
    d.setBounds(r);
    d.draw(c);

    /*   
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inTempStorage = new byte[128*1024];
        b = BitmapFactory.decodeStream(mContext.getResources().openRawResource(mImageIds[position]), null, o2);
        o2.inSampleSize=16;
        o2.inPurgeable = true;
    */
} catch (Exception e) {

}
i.setImageBitmap(b);

2011-06-04 09:44:58

在将位图设置为imageview后，像这样回收它:

bitmap.recycle();
bitmap=null;

2013-03-29 06:56:44

要修复OutOfMemory，你应该这样做，请尝试这段代码

public Bitmap loadBitmap(String URL, BitmapFactory.Options options) {
                Bitmap bitmap = null;
                InputStream in = null;
                options.inSampleSize=4;
                try {
                    in = OpenHttpConnection(URL);
                    Log.e("In====>", in+"");
                    bitmap = BitmapFactory.decodeStream(in, null, options);
                    Log.e("URL====>", bitmap+"");

                    in.close();
                } catch (IOException e1) {
                }
                return bitmap;
            }

and

try {
                    BitmapFactory.Options bmOptions;
                    bmOptions = new BitmapFactory.Options();
                    bmOptions.inSampleSize = 1;
                    if(studentImage != null){
                        galleryThumbnail= loadBitmap(IMAGE_URL+studentImage, bmOptions);    
                    }

                    galleryThumbnail=getResizedBitmap(galleryThumbnail, imgEditStudentPhoto.getHeight(), imgEditStudentPhoto.getWidth());
                    Log.e("Image_Url==>",IMAGE_URL+studentImage+"");

                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

2013-12-21 11:10:09

BitmapFactory.Options options = new Options();
options.inSampleSize = 32;
//img = BitmapFactory.decodeFile(imageids[position], options);

Bitmap theImage = BitmapFactory.decodeStream(imageStream,null, options);
Bitmap img=theImage.copy(Bitmap.Config.RGB_565,true);
theImage.recycle();
theImage = null;
System.gc();
//ivlogdp.setImageBitmap(img);
Runtime.getRuntime().gc();

2013-07-24 12:00:55

在manifest.xml文件中添加以下代码行:

<application

    android:hardwareAccelerated="false"
    android:largeHeap="true">

    <activity>
    </activity>

</application>

2018-11-01 06:02:33

在将图像加载到位图对象时出现奇怪的内存溢出问题

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