Bitmapfactory.decodestream () gets bitmap returns null

The normal image scaling code is as follows:

Bytearrayoutputstream BAOs = new Bytearrayoutputstream ();

Arg1.compress (Bitmap.CompressFormat.JPEG, BAOs),//arg1 for the original Bitmap passed in

Baos.tobytearray ();

InputStream is = new Bytearrayinputstream (Baos.tobytearray ());

To zoom

Bitmapfactory.options newopts = new Bitmapfactory.options ();

Start reading the picture, this time set the Options.injustdecodebounds back to True

Newopts.injustdecodebounds = true;

Bitmap Bitmap = Bitmapfactory.decodestream (is,null,newopts);//return BM to empty at this time

Newopts.injustdecodebounds = false;

int w = newopts.outwidth;

int h = newopts.outheight;

Now the mainstream phone is more 800*480 resolution, so the height and width we set to

float hh = 100f;//Here Set the height to 800f

float WW = 100f;//here set width to 480f

Scaling ratio. Because it is a fixed scale, only one of the data with high or wide is calculated

int be = 1;//be=1 means no scaling

if (W > H && w > ww) {//If the width is large, zoom according to the fixed width size

be = (int) (NEWOPTS.OUTWIDTH/WW);

} else if (W < h && h > hh) {//if height is scaled according to width fixed size

be = (int) (NEWOPTS.OUTHEIGHT/HH);

}

if (be <= 0)

be = 1;

Newopts.insamplesize = 2;//Setting the zoom ratio

Re-read the picture and note that the Options.injustdecodebounds has been set back to false at this time

Bitmap = Bitmapfactory.decodestream (is, null, newopts);

Finally get bitmap unexpectedly empty, think not escorts, and then will bitmap get the way to Bitmapfactory.decodebytearray (Baos.tobytearray (), 0, Baos.tobytearray (). Length, newopts) can be obtained, this really is a bug of Android?

Original: http://my.oschina.net/u/1463920/blog/360901

Bitmapfactory.decodestream () gets bitmap returns null