I'm trying to decode an inputstream to bitmap, the code is so simple :
Bitmap myBitmap = BitmapFactory.decodeStream(myStream);
BUT the quality of outputed bitmap is too low (sometimes, and sometimes the quality is good).
also the source has a good quality image.
i tried to play with Bitmap options but nothing changed:
BitmapFactory.Options options = new BitmapFactory.Options();
options.inScaled = false;
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap myBitmap = BitmapFactory.decodeStream(myStream, null, options);
so, how can i get the full quality bitmap?
Update 1:
I use this picture for an animation, like below:
coverAnimationImage.post(new Runnable()
{
Override
public void run()
{
try
{
InputStream coverStream = getCoverStream();
if(coverStream != null)
{
bookCover = BitmapFactory.decodeStream(coverStream);
}
}
catch (Exception e)
{
// no cover
}
coverAnimationImage.setImageBitmap(bookCover);
mBackground = new ColorDrawable(Color.BLACK);
if(Build.VERSION.SDK_INT >= 16)
{
coverAnimationLayout.setBackground(mBackground);
}
else
{
coverAnimationLayout.setBackgroundDrawable(mBackground);
}
if (flag)
{
ViewTreeObserver observer = coverAnimationImage.getViewTreeObserver();
observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener()
{
@Override
public boolean onPreDraw()
{
coverAnimationImage.getViewTreeObserver().removeOnPreDrawListener(this);
int[] screenLocation = new int[2];
coverAnimationImage.getLocationOnScreen(screenLocation);
mLeftDelta = coverLeft - (screenLocation[0]);
mTopDelta = coverTop - (screenLocation[1]);
mWidthScale = (float) coverWidth / coverAnimationImage.getWidth();
mHeightScale = (float) coverHeight / coverAnimationImage.getHeight();
runEnterAnimation();
return true;
}
});
}
}
});
I think when i run the animation the BitmapFactory.decodeStream isn't finished it's job! is it possible? or any idea whats happening here?
Update 2: the image info
Update 3:
low quality image:
high quality:
memory monitor:
YouTube Video:
android BitmapFactory.decodeStream low quality
Update 4:
the code of getCoverStream :
protected InputStream getCoverStream()
{
String fileName = getCoverAddress();
InputStream in = null;
ZipEntry containerEntry = mZip.getEntry(fileName);
if (containerEntry != null)
{
try
{
in = mZip.getInputStream(containerEntry);
}
catch (IOException e)
{
Log.e(TAG, "Error reading zip file " + fileName, e);
}
}
if (in == null)
{
Log.e(TAG, "Unable to find file in zip: " + fileName);
}
return in;
}
