時出錯，檢索位圖的AsyncTask過程

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出錯白色retriving位圖的AsyncTask過程中的logcat日誌下面，請告訴我如何清除這個錯誤我初學者到Android幫我在此先感謝時出錯，檢索位圖的AsyncTask過程

10-14 18:09:19.380 14124-16035/com.fragments D/dalvikvm﹕ GC_FOR_ALLOC freed 747K, 4% free 37438K/38855K, paused 191ms, total 193ms 
10-14 18:09:19.400 14124-16035/com.fragments I/dalvikvm-heap﹕ Forcing collection of SoftReferences for 14155792-byte allocation 
10-14 18:09:19.490 14124-16035/com.fragments D/dalvikvm﹕ GC_BEFORE_OOM freed 15K, 4% free 37422K/38855K, paused 91ms, total 91ms 
10-14 18:09:19.490 14124-16035/com.fragments E/dalvikvm-heap﹕ Out of memory on a 14155792-byte allocation. 
10-14 18:09:19.490 14124-16035/com.fragments I/dalvikvm﹕ "AsyncTask #4" prio=5 tid=16 RUNNABLE 
10-14 18:09:19.490 14124-16035/com.fragments I/dalvikvm﹕ | group="main" sCount=0 dsCount=0 obj=0x432d6fc0 self=0x4d7c1fe8 
10-14 18:09:19.490 14124-16035/com.fragments I/dalvikvm﹕ | sysTid=16035 nice=10 sched=3/0 cgrp=[fopen-error:2] handle=1300340400 
10-14 18:09:19.490 14124-16035/com.fragments I/dalvikvm﹕ | schedstat=(0 0 0) utm=15 stm=3 core=0 
10-14 18:09:19.490 14124-16035/com.fragments I/dalvikvm﹕ at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 
10-14 18:09:19.500 14124-16035/com.fragments I/dalvikvm﹕ at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:663) 
10-14 18:09:19.500 14124-16035/com.fragments I/dalvikvm﹕ at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:735) 
10-14 18:09:19.510 14124-16035/com.fragments I/dalvikvm﹕ at com.fragments.NewsListAdapter$ImageLoader.doInBackground(NewsListAdapter.java:128) 
10-14 18:09:19.520 14124-16035/com.fragments I/dalvikvm﹕ at com.fragments.NewsListAdapter$ImageLoader.doInBackground(NewsListAdapter.java:112) 
10-14 18:09:19.520 14124-16035/com.fragments I/dalvikvm﹕ at android.os.AsyncTask$2.call(AsyncTask.java:287) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ at java.lang.Thread.run(Thread.java:856) 
10-14 18:09:19.530 14124-16035/com.fragments I/dalvikvm﹕ [ 10-14 18:09:19.530 14124:14133 W/SQLiteConnectionPool ] 
A SQLiteConnection object for database '+data+data+com_fragments+databases+news_db' was leaked! Please fix your application to end transactions in progress properly and to close the database when it is no longer needed. 
10-14 18:09:19.530 14124-14133/com.fragments D/AbsListView﹕ [unregisterDoubleTapMotionListener] 
10-14 18:09:19.530 14124-14133/com.fragments I/MotionRecognitionManager﹕ .unregisterListener :/listener count = 0->0, ubvf 9budiwrd5ordgfl5BakTrklMrfo$,@,+)de/a(
10-14 18:09:19.560 14124-16035/com.fragments D/skia﹕ --- decoder->decode returned false 
10-14 18:09:19.580 14124-16035/com.fragments W/dalvikvm﹕ threadid=16: thread exiting with uncaught exception (group=0x41ccd2b8) 
10-14 18:09:19.740 14124-16035/com.fragments E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #4 
java.lang.RuntimeException: An error occured while executing doInBackground() 
     at android.os.AsyncTask$3.done(AsyncTask.java:299) 
     at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) 
     at java.util.concurrent.FutureTask.setException(FutureTask.java:124) 
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) 
     at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
     at java.lang.Thread.run(Thread.java:856) 
Caused by: java.lang.OutOfMemoryError 
     at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 
     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:663) 
     at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:735) 
     at com.fragments.NewsListAdapter$ImageLoader.doInBackground(NewsListAdapter.java:128) 
     at com.fragments.NewsListAdapter$ImageLoader.doInBackground(NewsListAdapter.java:112) 
     at android.os.AsyncTask$2.call(AsyncTask.java:287) 
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 

at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
            at java.lang.Thread.run(Thread.java:856) 
     10-14 18:09:28.740 14124-14124/com.fragments D/AndroidRuntime﹕ Shutting down VM 
     10-14 18:09:28.740 14124-14124/com.fragments W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41ccd2b8) 
    10-14 18:09:28.740 14124-14124/com.fragments I/Process﹕ Sending signal. PID: 14124 SIG: 9

更新：

這是我的AsyncTask類

private class ImageLoader extends AsyncTask<NewsAndImages, Void, NewsAndImages> { 

    @Override 
    protected NewsAndImages doInBackground(NewsAndImages... params) { 
     NewsAndImages container = params[0]; 
     News news = container.news; 
     try { 
      if (container.position > 0) { 
       InputStream in = (InputStream) new URL(news.getImage150()).getContent(); 
       Bitmap bitmap = BitmapFactory.decodeStream(in); 
       news.setBitmap(bitmap); 
       in.close(); 
       container.bitmap = bitmap; 
       return container; 
      } else { 
       InputStream in = (InputStream) new URL(news.getRealImage()).getContent(); 
       Bitmap bitmap = BitmapFactory.decodeStream(in); 
       news.setBitmap(bitmap); 
       in.close(); 
       container.bitmap = bitmap; 
       return container; 
      } 

     } catch (Exception e) { 

      Log.v("LOGTAG", e + " streaming pic"+news.getImage150()); 
     } 

     return null; 
    } 

    @Override 
    protected void onPostExecute(NewsAndImages newsAndImages) { 
     try { 
      if (newsAndImages.position > 0) { 
      ImageView imageView = (ImageView) newsAndImages.view.findViewById(R.id.newsListImage); 
      imageView.setImageBitmap(newsAndImages.bitmap); 
      newsAndImages.news.setBitmap(newsAndImages.bitmap); 
      }else { 
       ImageView imageView = (ImageView) newsAndImages.view.findViewById(R.id.newsHeadLineImage); 
       imageView.setImageBitmap(newsAndImages.bitmap); 
       newsAndImages.news.setBitmap(newsAndImages.bitmap); 
      } 

     } catch (Exception e) { 

      Log.v("LOGTAG", e + " post exe"); 
     } 
    } 

}

現在告訴我該怎麼做...

來源

2015-10-14 Unknown Error

循環使用後'bitmap' –

@kishorejethava怎麼樣？ –

閱讀[this]（https://developer.android.com/training/displaying-bitmaps/index.html）。張貼您的代碼 –

它的作品...

使用LruCache

private class ImageLoader extends AsyncTask<NewsAndImages, Void, NewsAndImages> { 
    @Override 
    protected NewsAndImages doInBackground(NewsAndImages... params) { 
     NewsAndImages container = params[0]; 
     News news = container.news; 
     try { 
      if (container.position > 0) { 
       InputStream in = (InputStream) new URL(news.getImage150()).getContent(); 
       Bitmap bitmap = BitmapFactory.decodeStream(in); 
       news.setBitmap(bitmap); 
       in.close(); 
       container.bitmap = bitmap; 
       return container; 
      } else { 
       InputStream in = (InputStream) new URL(news.getRealImage()).getContent(); 
       Bitmap bitmap = BitmapFactory.decodeStream(in); 
       news.setBitmap(bitmap); 
       in.close(); 
       container.bitmap = bitmap; 
       return container; 
      } 
     } catch (Exception e) { 
      Log.v("LOGTAG", e + " streaming pic" + news.getImage150()); 
     } 
     return null; 
    } 

    @Override 
    protected void onPostExecute(NewsAndImages newsAndImages) { 
     try { 
      if (newsAndImages.position > 0) { 
       ImageView imageView = (ImageView) newsAndImages.view.findViewById(R.id.newsListImage); 
       imageView.setImageBitmap(newsAndImages.bitmap);    
       imageCache.put(newsAndImages.news.getNews_id(),newsAndImages.bitmap); 
      } else { 
       ImageView imageView = (ImageView) newsAndImages.view.findViewById(R.id.newsHeadLineImage); 
       imageView.setImageBitmap(newsAndImages.bitmap); 
       imageCache.put(newsAndImages.news.getNews_id(),newsAndImages.bitmap); 
      } 
     } catch (Exception e) { 
      Log.i(NewsDBOpenHelper.LOGTAG, e + " onPostExecute"); 
     } 
    } 
}

來源

2015-10-16 02:52:04

如果你只是想下載圖像和設置在你的ImageView，那麼最好使用外部解決方案，只是使用一行代碼，如：http://square.github.io/picasso/ – Sharj

你有任何「簡單」的想法將圖像保存在磁盤緩存重用？ @Sharj –

畢加索自己做圖像緩存，所以你不必擔心它。 – Sharj

顯然你的方法doInBackground不能處理你的圖像。你的應用程序中是否還有其他圖像處理？另外，我建議你使用這樣的：

bitmap.recycle(); bitmap = null;

這將確保該位是垃圾收集。如果你沒有回收你的位圖，你將有一個內存不足的例外

來源

2015-10-14 13:59:46 antoniosj

不要在doInBackground內設置位圖。而是返回新下載的bitmap並僅在onPostExecute內設置。

您現在設置了bitmap兩次，所以在使用後從doInBackground和recycle中刪除。

更新代碼

private class ImageLoader extends AsyncTask<String, Void, Bitmap> { 

     @Override 
     protected Bitmap doInBackground(NewsAndImages... params) { 
      NewsAndImages container = params[0]; 
      News news = container.news; 
      try { 
       if (container.position > 0) { 
        InputStream in = (InputStream) new URL(news.getImage150()).getContent(); 
        Bitmap bitmap = BitmapFactory.decodeStream(in); 
        in.close(); 
        return bitmap; 
       } else { 
        InputStream in = (InputStream) new URL(news.getRealImage()).getContent(); 
        Bitmap bitmap = BitmapFactory.decodeStream(in); 
        in.close(); 
        return bitmap; 
       } 

      } catch (Exception e) { 

       Log.v("LOGTAG", e + " streaming pic"+news.getImage150()); 
      } 

      return null; 
     } 

     @Override 
     protected void onPostExecute(Bitmap bitmap) { 
      try { 
       if (bitmap !=null) { 
       ImageView imageView = (ImageView) newsAndImages.view.findViewById(R.id.newsListImage); 
       imageView.setImageBitmap(bitmap); 
       newsAndImages.news.setBitmap(bitmap); 
       }else { 
        ImageView imageView = (ImageView) newsAndImages.view.findViewById(R.id.newsHeadLineImage); 
        imageView.setImageBitmap(bitmap); 
        newsAndImages.news.setBitmap(bitmap); 
       } 
       bitmap.recycle(); 
      } catch (Exception e) { 

       Log.v("LOGTAG", e + " post exe"); 
      } 
     } 

    }

來源

2015-10-15 06:06:48

沒有工作....！ –

嘗試[這]（http://javatechig.com/android/loading-image-asynchronously-in-android-listview） –

時出錯，檢索位圖的AsyncTask過程

回答

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