I forgot:
Initialization of pTouch (used in onDraw()):
pTouch = new Paint(Paint.ANTI_ALIAS_FLAG);
pTouch.setXfermode(new PorterDuffXfermode(Mode.SRC_OUT));
pTouch.setColor(Color.TRANSPARENT);
pTouch.setMaskFilter(new BlurMaskFilter(25, Blur.NORMAL));
Am Samstag, 20. April 2013 11:07:16 UTC+2 schrieb user123:
>
> I have 2 images, one on top of the other. I paint a circle in the
> front-image with xfermode to let the image bellow show through.
>
> I realized this with 2 views in a RelativeLayout. The front-view acts as
> "mask" and is a custom view.
>
> The problem: Works well in 4.x, but on 2.x the circle is black, instead of
> transparent.
>
>
> The code:
>
>
> @Override
> public void onDraw(Canvas canvas){
> super.onDraw(canvas);
>
> c2.drawCircle(X, Y, 50, pTouch);
> Paint new_paint = new Paint();
> new_paint.setXfermode(new PorterDuffXfermode(Mode.SRC_ATOP));
> rect.set (0, 0, getWidth(), getHeight());
> canvas.drawBitmap(overlay, null, rect, new_paint);
>
> }
>
> And c2 was initialized to a canvas with bitmap "overlay", like this:
>
> Bitmap overlay;
> BitmapFactory.Options options = new BitmapFactory.Options();
> options.inScaled = false;
> overlay = BitmapFactory.decodeResource(getResources(), R.drawable.overlay,
> options);
> //...
> overlay = Bitmap.createScaledBitmap(overlay, newWidth, newHeight, false);
>
> c2 = new Canvas(overlay);
>
> Paint filterPaint = new Paint();
> filterPaint.setColorFilter(new PorterDuffColorFilter(0xff000022,
> PorterDuff.Mode.SRC_ATOP));
> rect.set (0, 0, w, h);
> c2.drawBitmap(overlay, null, rect, filterPaint);
>
>
> Thanks!
>
--
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
---
You received this message because you are subscribed to the Google Groups
"Android Developers" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
