Ninepatch creation at runtime

Asked Apr 22 '14 at 15:31

Active Apr 22 '14 at 15:31

Viewed 181 times

I want to download a compiled Ninepatch file via network and set it into an ImageView. I already found the following solutions: Link, Link

My code is:

public class DownloadImageTask extends AsyncTask<URL, Void, Bitmap> {

private ImageView _imgView;
private Context _context;

public DownloadImageTask(Context context, ImageView imgView) {
    _context = context;
    _imgView = imgView;
}

@Override
protected Bitmap doInBackground(URL... params) {
    Bitmap networkBitmap = null;           
    URL networkUrl = params[0];

    try {
        networkBitmap = BitmapFactory.decodeStream(networkUrl.openConnection().getInputStream());
    } 
    catch (IOException e) {
        e.printStackTrace();
    }

   return networkBitmap;
}

@Override
  protected void onPostExecute(Bitmap result) {
    byte[] chunk = result.getNinePatchChunk();

    if (NinePatch.isNinePatchChunk(chunk)) {
        NinePatchDrawable ninePatch = new NinePatchDrawable(_context.getResources(), result, chunk, new Rect(), null);
        _imgView.setImageDrawable(ninePatch);
    }
  }

}

The Ninepatch that I load via network is compiled using aapt:

aapt.exe c -v -S in -C out

The Ninepatch is downloaded properly and onPostExecute() is getting called, I also get the chunck from the Bitmap and I'm able to create a NinePatchDrawable, but after setting it to the ImageView the Bitmap doesn't scale. What am I doing wrong?

Thanks in advance Dennis

edited May 23 '17 at 12:05

Community

asked Apr 22 '14 at 15:31

nickbw2003

What do you mean when you say that the `Bitmap` doesn't scale? – Xaver Kapeller Apr 22 '14 at 15:34
Log.d the chunk, i bet it has all zeroes – pskink Apr 22 '14 at 15:47
@XaverKapeller the ImageView's size is fill_parent x 45dp and I want the Ninepatch created from the Bitmap to scale up to this size. – nickbw2003 Apr 23 '14 at 06:19
@pskink the chunk's value is [1, 2, 4, 9, ... ] – nickbw2003 Apr 23 '14 at 06:20
ok then post 9 patch and what you got in the ImageView – pskink Apr 23 '14 at 06:28
did you try to setBackgroundDrawable for a testing purposes? – pskink Apr 23 '14 at 06:30
I uploaded two screenshots, one with setImageDrawable(Drawable ...) and another with setBackground(Drawable ...) - the first image is loaded by network, the second is a local ninepatch to test the uncompiled version. The compiled ninepatch is also inside: https://www.dropbox.com/sh/64erngvdxa3w94g/2eXz-a75l- – nickbw2003 Apr 23 '14 at 06:54
the third one, its not 9 patch, is it? – pskink Apr 23 '14 at 06:59
it is a compiled one, created by the commandline in my first post, so you don't see the ninepatch pixels inside – nickbw2003 Apr 23 '14 at 07:05
and can you add the original 9 patch? – pskink Apr 23 '14 at 07:29
yep, its also added now – nickbw2003 Apr 23 '14 at 07:34
hmm, i give up since there should be two images with red square... – pskink Apr 23 '14 at 07:40

Ninepatch creation at runtime

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