Questions:
I am trying to tile a 20×20 background onto my Custom View but for some reason I am unable too.
BitmapDrawable background;
background = new BitmapDrawable(BitmapFactory.decodeResource(getResources(), R.drawable.back));
background.setTileModeXY(Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
background.draw(canvas);
Does anyone have an idea why it isn’t working?
How to&Answers:
You can use BitmapDrawable, but you have to set the bounds first so it knows how much tiling to do:
BitmapDrawable background;
background = new BitmapDrawable(BitmapFactory.decodeResource(getResources(),R.drawable.back));
//in this case, you want to tile the entire view
background.setBounds(0, 0, myView.getWidth(), myView.getHeight());
background.setTileModeXY(Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
background.draw(canvas);
Answer：
You are probably getting warnings in your log regarding SKImageDecoder failing. If you are creating the resource via xml you need to retreive it via (BitmapDrawable) getResources().getdrawable(id)
Answer：
You have it backwards. Instead of passing your View’s canvas to the bitmap’s draw method, draw your Bitmap to the View’s canvas using Canvas.drawBitmap
Tags: androidandroid, canvas
