android - 如何处理系统进程中的致命异常：ActivityManager 和 java.lang.OutOfMemoryError：[内存耗尽]

Question

我有一个设备（三​​星 Galaxy Fit）。当我打开设备时，我无法进入主屏幕，它一直在加载。当我连接设备并看到 logcat 时，我的 logcat 错误显示 -

"FATAL EXCEPTION IN SYSTEM PROCESS: ActivityManager and java.lang.OutOfMemoryError: [memory exhausted]"

如何处理？

Answer 1

有一些方法可以解决内存不足错误

首先像这样回收位图

bmp.recycle();
bmp = null;

第二次使用垃圾收集器

System.runFinalization();
Runtime.getRuntime().gc();
System.gc();

但是如果您在这里发布一些代码会更好，这样我和其他人可以为您提供更多帮助:)

Answer 2

使用以下代码，您必须检查 OutOfMemory 错误

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
{

    if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK)
    try 
    {
        // We need to recyle unused bitmaps
         if (Main_bitmap != null) 
         {
                    Main_bitmap.recycle();
         }

      Uri selectedImage = data.getData();
      String[] filePathColumn = {MediaStore.Images.Media.DATA};
      Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);

       if (cursor.moveToFirst()) 
      {
                        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                        filePath = cursor.getString(columnIndex);


                        BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
                      bmpFactoryOptions.inJustDecodeBounds=true;
                      BitmapFactory.decodeFile(filePath,bmpFactoryOptions);

         if ( checkBitmapFitsInMemory(bmpFactoryOptions.outWidth,bmpFactoryOptions.outHeight, 2)) 
        {
                            BitmapFactory.Options options4 = new BitmapFactory.Options();
                            options4.inSampleSize = 1;
                            Main_bitmap = BitmapFactory.decodeFile(filePath, options4);
                        iv_set_image.setImageBitmap(Main_bitmap);

        }
        else
        {

             Toast.makeText(this,"java.lang.OutOfMemoryError:", 1).show();             

         }
                    cursor.close();
     } 
     catch (Exception e)
    {
             e.printStackTrace();
     }
       super.onActivityResult(requestCode, resultCode, data);
}    



    public static boolean checkBitmapFitsInMemory(long bmpwidth,long bmpheight, int bmpdensity )
    {
        long reqsize=bmpwidth*bmpheight*bmpdensity;
        long allocNativeHeap = Debug.getNativeHeapAllocatedSize();


        final long heapPad=(long) Math.max(4*1024*1024,Runtime.getRuntime().maxMemory()*0.1);
        if ((reqsize + allocNativeHeap + heapPad) >= Runtime.getRuntime().maxMemory())
        {
            return false;
        }
        return true;

    }