java.lang.OutOfMemoryError: bitmap size exceeds VM budget
Question
I'm using a BitmapFactory to decode a JPG from file and then setting the imageBitmap of an ImageView with that. Sometimes, the app crashes with " java.lang.OutOfMemoryError: bitmap size exceeds VM budget "
I've tried using:
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
Bitmap bm = BitmapFactory.decodeFile(filepath, options);
it seemed to be working for a while, but not anymore. What can I do?
4 answers
solution1
1 ACCPTED 2011-08-08 15:28:30
In Android, there is a cap on how much memory that can be allocated to an application, it could be around 16 MB to 32 MB. (Upto Android Version)
For a 2 Mega Pixel, memory required for the bitmap would be 2 * 4 = 8 M.
To reduce memory consumption, you need to lower the image resolution. Say WVGA, 800x480 to start with
Shash
solution2
0 2011-08-08 15:27:09
Reduce the number of images you use, or cache them, and if you cache them, store them in the minimum size you need.
Regards, Stéphane
solution3
0 2011-08-08 15:58:41
And this is the code to cache image files.
protected static Map<String, Drawable> cacheThumbs = new HashMap<String, Drawable>();
//code to cache images
if( thumbUri.length() == 0 )
return;
Drawable d = cacheThumbs.get( thumbUri );
if( d == null )
{
String fileName = movie.getId()+"_"+thumbUri.substring( thumbUri.lastIndexOf('/')+1 );
cacheFile = new File( application.getCacheDir(), fileName );
if( !cacheFile.exists() )
{
//Log.v(LOG_TAG,"Fetching "+thumbUri +" and caching in "+cacheFile.getAbsolutePath() );
InputStream bis = (InputStream) new URL(thumbUri).getContent();
BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream( cacheFile ) );
int read = 0;
while( (read = bis.read( buffer )) != -1 )
bos.write( buffer, 0, read );
bis.close();
bos.close();
Log.v(LOG_TAG,thumbUri + " fetched");
}//if
Log.v(LOG_TAG,thumbUri + " in cache");
BufferedInputStream bis = new BufferedInputStream( new FileInputStream( cacheFile ), 9000 );
d = Drawable.createFromStream( bis, "src name");
bis.close();
cacheThumbs.put( thumbUri, d );
Regards, Stéphane
solution4
0 2011-08-08 19:13:15
I would like to add a different view to this discussion. I did read so many threads and suggestions and ended up with a WebView to display single images. It's not ment for galleries just for a single image. It's working perfect, its zoomable by options, its scrollable and finally no memory errors ;-)
It works for images you load from the web and for local images as well. Here's a small example:
WebView webView = (WebView) findViewById(R.id.your_webview);
String html = "<html><head><title>A title</title></head><body bgcolor=\"#000000\"><img src=\"" + url + "\"></body></html>";
WebSettings webSettings = webView.getSettings();
webSettings.setBuiltInZoomControls(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setSupportZoom(true);
webSettings.setUseWideViewPort(true);
webView.setScrollbarFadingEnabled(true);
webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webView.loadDataWithBaseURL("fake://fake.com", html, "text/html", "UTF-8", null);
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