這個例外是什么意思？

Question

我正在將圖像從Web服務顯示到列表視圖中，假設我要測試應用程序10次，然后6次出現此異常，請有人幫助我。 我正在使用AsyncTask調用Web服務。

06-12 14:49:53.132: E/dalvikvm-heap(3071): Out of memory on a 1920016-byte allocation.
 06-12 14:49:53.160: E/AndroidRuntime(3071): FATAL EXCEPTION: AsyncTask #3
 06-12 14:49:53.160: E/AndroidRuntime(3071): java.lang.RuntimeException: An error  occured while executing doInBackground()
  06-12 14:49:53.160: E/AndroidRuntime(3071):   at android.os.AsyncTask$3.done(AsyncTask.java:278)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
06-12 14:49:53.160: E/AndroidRuntime(3071):     at java.lang.Thread.run(Thread.java:856)
06-12 14:49:53.160: E/AndroidRuntime(3071): Caused by: java.lang.OutOfMemoryError
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at an droid.graphics.BitmapFactory.decodeStream(BitmapFactory.java:493)
06-12 14:49:53.160: E/AndroidRuntime(3071):     at com.rentfaster.utilities.ImageLoader.decodeFile(ImageLoader.java:142)
06-12 14:49:53.160: E/AndroidRuntime(3071):     at com.rentfaster.utilities.ImageLoader.getBitmap(ImageLoader.java:78)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at com.rentfaster.handler.DetailPhotoHandler.imagefecher(DetailPhotoHandler.java:211)
  06-12 14:49:53.160: E/AndroidRuntime(3071):   at com.rentfaster.handler.DetailPhotoHandler.characters(DetailPhotoHandler.java:153)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at org.apache.harmony.xml.ExpatParser.text(ExpatParser.java:163)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at org.apache.harmony.xml.ExpatParser.appendBytes(Native Method)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at org.apache.harmony.xml.ExpatParser.parseFragment(ExpatParser.java:513)
  06-12 14:49:53.160: E/AndroidRuntime(3071):   at org.apache.harmony.xml.ExpatParser.parseDocument(ExpatParser.java:474)
  06-12 14:49:53.160: E/AndroidRuntime(3071):   at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:321)
  06-12 14:49:53.160: E/AndroidRuntime(3071):   at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:279)
 06-12 14:49:53.160: E/AndroidRuntime(3071):    at com.rentfaster.home.PropertyDetail$Photostask.doInBackground(PropertyDetail.java:1174)
  06-12 14:49:53.160: E/AndroidRuntime(3071):   at com.rentfaster.home.PropertyDetail$Photostask.doInBackground(PropertyDetail.java:1)
06-12 14:49:53.160: E/AndroidRuntime(3071):     at android.os.AsyncTask$2.call(AsyncTask.java:264)
06-12 14:49:53.160: E/AndroidRuntime(3071):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
06-12 14:49:53.160: E/AndroidRuntime(3071):     ... 4 more
06-12 14:50:02.882: E/parse exception0(3258):  dont know why
06-12 14:50:02.882: E/XML Error(3258): java.net.MalformedURLException: Protocol not found: &area=53.447557,-113.460058,53.447557,-113.460058&max=100
06-12 14:50:02.921: E/MapActivity(3258): Couldn't get connection factory client

我仍然面臨內存不足的問題，我正在使用此代碼，請幫幫我

//decodes image and scales it to reduce memory consumption
    private static Bitmap decodeFile(File f){
       try {
        //decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inSampleSize = 2;
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f),null,o);

        //Find the correct scale value. It should be the power of 2.
        final int REQUIRED_SIZE=70;
        int width_tmp=o.outWidth, height_tmp=o.outHeight;
        int scale=1;
        while(true){
            if(width_tmp/2<REQUIRED_SIZE || height_tmp/2<REQUIRED_SIZE)
                break;
            width_tmp/=2;
            height_tmp/=2;
            scale*=2;
        }

        //decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();

        o2.inSampleSize=2;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, null);
    } catch (FileNotFoundException e) {}
    return null;
}

Answer 1

創建位圖來源時內存不足，您需要使用以下方法減小位圖的大小

 BitmapFactory.Options option = new BitmapFactory.Options();
    option.inSampleSize = 2;


Bitmap bm = BitmapFactory.decodeFile(root.getPath() + "/" + imageName,
                            option);
                    imageView.setImageBitmap(bm);

Answer 2

您在解碼來自某個流（Web服務？）的位圖時用盡了內存，也許您不應該將圖像作為消息交換的一部分（它將被base64編碼並再次復制並再次污染您的寶貴堆）進行傳遞，而應作為傳遞二進制文件的單獨請求來傳遞從服務器流？

Answer 3

您正在獲取RuntimeException，這是由OutOfMemoryError引起的。 當您嘗試加載對於Android分配給應用程序的空間而言太大的圖像時，通常會發生OutOfMemoryError。

如果您可以將以下幾行以及它們上面和下面的一些代碼以及調用方法一起發布，並說明您在應用程序中的工作，我們可能會更好地幫助您：

ImageLoader.java:142
ImageLoader.java:78
DetailPhotoHandler.java:211
DetailPhotoHandler.java:153

Answer 4

問題是OutOfMemoryError
這些鏈接應該可以解決您的問題，
android如何處理內存不足異常
如何處理內存不足錯誤？
Android：Gallery中的內存不足異常
android-創建位圖時出現內存不足異常