CODEWITHSUNDEEP
androidlayoutcanvas
Darshan Gowda
Darshan Gowda

Reputation: 5216

How to align the canvas object to center of the screen?

I am making a screen where i need my gBall to align at the center of the screen. The code is as follows.

  @Override
  protected void onDraw(Canvas canvas) {
    // TODO Auto-generated method stub
    super.onDraw(canvas);
    canvas.drawColor(Color.RED);

    Paint textPaint = new Paint();
    textPaint.setColor(Color.BLUE);
    textPaint.setTextAlign(Align.CENTER);
    textPaint.setTextSize(canvas.getWidth() / 7);
    textPaint.setTypeface(font);
    canvas.drawText("MY Text", (canvas.getWidth() / 2),
            (float) (canvas.getHeight() * 0.75), textPaint);
    canvas.drawBitmap(gball, 0, (float) (canvas.getHeight() * .25), null);//This is where i need help
}

But i am getting it aligned to left of the screen, can anyone help?

Upvotes: 0

Views: 4707

Answers (2)

Eddy
Eddy

Reputation: 589

You get it at the left of the screen because your X value is set to 0. It should be 

   int startX= (canvas.getWidth()-gBall.getWidth())/2;//for horisontal position
   int startY=(canvas.getHeight()-gBall.getHeight())/2;//for vertical position
   canvas.drawBitmap(gball, startX, startY, null);

Also, do not initialize your paint in onDraw() method.

Upvotes: 4

Darshan Gowda
Darshan Gowda

Reputation: 5216

Got it right wth this code!

  canvas.drawBitmap(gball, (canvas.getWidth()/2-(gball.getWidth()/2)), (float) (canvas.getHeight() * .25), null);

Upvotes: -1

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