Android - Does an ImageView resizes the image (and doesn't save the original)? -

quite simple questions, can't find answer..

i'm asking in order know if though imageview shows smaller version of original image - still use full memory size of original .. ? (i refer image loaded sd-card , not resources)

yes, use original size. have resize bitmaps before assign imageview, otherwise have lot of problems out of memory error.

you should calculate final size of imageview , resize bitmap.

some code going.

private static bitmap createbitmap(@nonnull string filepath, int width ) {     bitmapfactory.options options = new bitmapfactory.options();      options.injustdecodebounds = true;     bitmapfactory.decodefile(filepath , options );      // getting original image properties     int imageheight = options.outheight;     int imagewidth = options.outwidth;       int scale       = -1;     if ( imagewidth < imageheight ) {         scale   = math.round( imageheight / width );     } else {         scale   = math.round(imagewidth / width);     }     if ( scale <= 0 )         scale = 1;      options.insamplesize    = scale;     options.injustdecodebounds  = false;      // create resized bitmap     bitmap scaledbitmap = bitmapfactory.decodefile(filepath , options);     return scaledbitmap; } 

you should consider:

• maintain bitmap operations outside main thread.
• handle concurrency correctly
• make use of open source lib, one