Re: [android-developers] Fitting image to a screen

I'm doing a facial parameter software that doctors could use to extract angles and ratios of the nose. This is what i have so far, I even tried to rotate the picture and still the returned image is distorted.

 Code:

 Bitmap b = BitmapFactory.decodeFile(getIntent().getStringExtra("imagePath"));

        float rotation = (float) this.getIntent().getFloatExtra("resource", 0);

       

        

        DisplayMetrics displayMetrics = new DisplayMetrics();

        WindowManager wm = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE); // the results will be higher than using the activity context object or the getWindowManager() shortcut

        wm.getDefaultDisplay().getMetrics(displayMetrics);

        int screenWidth = displayMetrics.widthPixels;

        int screenHeight = displayMetrics.heightPixels;

        

        Matrix matrix = new Matrix();

       // float rotation = PhotoTaker.rotationForImage(this.getApplicationContext(), uri);

        if (rotation != 0f) {

             matrix.preRotate(rotation);

        }

        

        Bitmap scaled = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), matrix, true);

      

        //b.createScaledBitmap(b, 320, 480, true);

       

        n.setBackGround(scaled,screenWidth,screenHeight);

        

        //preview.setImageBitmap(b);

        setContentView(n);

On Tue, May 1, 2012 at 2:18 AM, Jim Graham <spooky130u@gmail.com> wrote:

One point here:  the assumption I'm making is that this is for a
wallpaper.

On Mon, Apr 30, 2012 at 03:46:37PM -0600, Justin Anderson wrote:
> >
> > And if you're about to question that, I got this directly from Dianne
> > Hackborn in a thread I
> > started over a year ago (maybe two...I'm not even sure now).
> >
> Do you happen to have a link to said thread?

If I did, don't you think I'd be able to say how long ago it was?  ;-}
But given the source of the information---direct from one of THE
Android developers (as in, the platform itself), I think it's safe to
say that you're nuts if you don't listen to what she said.

> I have done image scaling before and have never run into this... My
> constraints were slightly different though... I simply scaled the image
> so that it was as large as possible while maintaining the aspect
> ration.

Yeah, and I tried all of that stuff, too....and no matter what, it kept
getting stretched off-screen when you set it as wallpaper.

> On Mon, Apr 30, 2012 at 3:26 PM, Mohamed ElSanousi <mmurtada57@gmail.com>wrote:
> >
> >  Your joking, my whole project is depending. I need to resize this bitmap
> > to fit the screen size, because I want to do calculation on the picture :(

Wait a second...is this for a wallpaper (or lwp)?  Or are you just trying
to set an ImageView to full screen?  If the former, no, you can't do it.
If the latter, RTFM (http://developer.android.com/guide/index.html).
That's so simple I never even considered that that's what you were
asking.  And you don't need to calculate the screen size or anything to
do that.  Just the right settings (in XML and maybe also in Java) for an
ImageView.

Later,
  --jim

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