Looking at your code, you're drawing the bitmap at the top-left of the canvas (i.e. canvas.drawBitmap(bitmap, 0, 0 ...). Presumably, you're precalculating where the bitmap needs to be drawn (it's top-left coordinate) and using those values in the drawBitmap() call?
The onDraw method will only draw what you tell it to. So, what I presume is happening is that you're asking it to first render this: 1 0 0 0 0 0 0 0 0 which it does, then you ask it to render the bitmap at (I'm assuming that each '1' is a single bitmap): 0 0 0 0 1 0 0 0 0 The problem is, is that you've not told it about the first bitmap (at the top-left corner), so it doesn't bother drawing that and just renders the bitmap in the middle. Thus, to fix this, you need to be able to keep a track of all the bitmaps that you want to draw, and where they're to be drawn. On Mar 4, 8:09 am, CMF <[email protected]> wrote: > Let consider this is my tile view (which is a bitmap): > > 0 0 0 > 0 0 0 > 0 0 0 > > First, I have change the view to > > 1 0 0 > 0 0 0 > 0 0 0 > > Second, I would like to change the middle one, and I expect the result > is > 1 0 0 > 0 1 0 > 0 0 0 > > However, the view give the result: > 0 0 0 > 0 1 0 > 0 0 0 > > Is there any method that I can draw the particular part but now the > whole view? > Here is my onDraw() > > @Override > protected void onDraw(Canvas canvas) > { > super.onDraw(canvas); > Bitmap bitmap = getImage(R.drawable.tileboard); > bitmap.setDensity(canvas.getDensity()); > canvas.drawBitmap(bitmap, 0, 0, new > Paint());//drawtilebackground > } -- 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
