java.lang.OutOfMemoryError: 位图大小超出 VM 预算
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java.lang.OutOfMemoryError: bitmap size exceeds VM budget
提问by mlevit
So I've got a lazy image loader for my ListView. I also use this tutorialfor better memory management and have SoftReferenceBitmap images stored in my ArrayList.
所以我有一个懒惰的图像加载器用于我的ListView. 我还使用本教程进行更好的内存管理，并将SoftReference位图图像存储在我的ArrayList.
My ListViewworks loads 8 images from a DB then once the user scrolls all the way to the bottom it loads another 8 etc etc. There was no issue when there were around 35 images or less, but any more and my app Force Closes with OutOfMemoryError.
我的ListView作品从数据库加载 8 个图像，然后一旦用户一直滚动到底部，它就会加载另外 8 个等等。当大约有 35 个或更少的图像时没有问题，但是更多并且我的应用程序 Force Closes with OutOfMemoryError.
The thing that I can't understand is I have my code inside a try catch:
我无法理解的是我的代码在 try catch 中：
try
{
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeByteArray(image, 0, image.length, o);
//Find the correct scale value. It should be the power of 2.
int width_tmp = o.outWidth, height_tmp = o.outHeight;
int scale = 1;
while(true)
{
if(width_tmp/2 < imageWidth || height_tmp/2 < imageHeight)
{
break;
}
width_tmp/=2;
height_tmp/=2;
scale++;
}
//Decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
bitmapImage = BitmapFactory.decodeByteArray(image, 0, image.length, o2);
}
catch (Exception e)
{
e.printStackTrace();
}
But the try catch block isn't catching the OutOfMemoryexception and from what I understand the SoftReferenceBitmap images should be cleared when the application is running out of memory stopping the OutOfMemoryexception being thrown.
但是 try catch 块没有捕获OutOfMemory异常，据我所知，SoftReference当应用程序内存不足时，应清除位图图像以停止OutOfMemory抛出异常。
What am I doing wrong here?
我在这里做错了什么？
采纳答案by mlevit
OutOfMemoryErroris an error not an exception, you should not catch it.
OutOfMemoryError是错误而不是异常，您不应该捕获它。
see http://mindprod.com/jgloss/exception.html
见http://mindprod.com/jgloss/exception.html
EDIT: known problem see this issue
编辑：已知问题请参阅此问题
回答by Narasimha
I suppose may be this post will help you
我想这篇文章可能会帮助你
//decodes image and scales it to reduce memory consumption
private Bitmap decodeFile(File f){
try {
//Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(f),null,o);
//The new size we want to scale to
final int REQUIRED_SIZE=70;
//Find the correct scale value. It should be the power of 2.
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=scale;
return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
} catch (FileNotFoundException e) {}
return null;
}
回答by Jim Phillips
Error and Exception are subclassed from Throwable. Error are supposed to be so drastic, that you should not catch them.
Error 和 Exception 是 Throwable 的子类。错误应该是非常严重的，你不应该抓住它们。
But you can catch anything.
但是你可以抓住任何东西。
try
{
}
catch (Throwable throwable)
{
}
