Um, draw the two bitmaps one by one, applying any transformation as necessary?
View rendering is double buffered, so you won't have flicker. You'd need a view subclass for this, overriding onDraw. 06.04.2011 22:53 пользователь "Krzysztof Majkowski" <[email protected]> написал: > I want to merge and show two bitmaps few times per second ( I'm using > orientation sensor and need to display in ImageView two parts of one > big bitmap ). > > Bitmap b = BitmapFactory.decodeFile( url ); > Bitmap all = Bitmap.createBitmap( xScreen, yScreen, > Config.ARGB_8888 ); > Canvas c = new Canvas( all ); > ImageView imageView = ...; > > public void drawBitmaps( float values[] ) > { > ... > c.save(); > Bitmap b2 = Bitmap.createBitmap( b, 0, startY, > xScreen / 2, yScreen ); > Bitmap b3 = Bitmap.createBitmap( b, startX, startY, > xScreen / 2, yScreen ); > > c.drawBitmap( b2, 0, 0, null ); > c.drawBitmap( b3, startX, 0, null ); > imageView.setImageBitmap( all ); > c.restore(); > } > > I need to call drawBitmaps(...) few times per second, and operation > Canvas.drawBitmap(...) take a lot of time and it's useless. Do you > know any better idea how to merge two bitmaps faster? > > -- > 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 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
