Build an app which animates a circle completing from 0 to 360 in android

Asked Sep 13 '15 at 22:43

Active Sep 13 '15 at 22:43

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I want to build an app which animates a circle completing from 0 to 360 in android. I am new in android and working on animation

Paint paint = new Paint();
        paint.setColor(Color.BLACK);
        paint.setStrokeWidth(5);
        paint.setStyle(Paint.Style.STROKE);

        Path path = new Path();
        float center_x, center_y;

        center_x = width/2;
        center_y = height/2;
        final RectF oval = new RectF();
        oval.set(center_x - radius,center_y - radius,center_x + radius,center_y + radius);
        path.addArc(oval, 0, 360);// like this line produce a complete circle but i want animation which start from 0 and end at 360

        canvas.drawPath(path, paint);

I try to use while loop with invalidate(); but it did not work. So please help me.

asked Sep 13 '15 at 22:43

jatinder bhola

you need a timer, other than while loop. because system need time to process your `invalidate()` and do the draw in real. – Jiang YD Sep 14 '15 at 02:32
Jian YD, I can figure it out how to use timer to process time. Do you have some code or example. – jatinder bhola Sep 14 '15 at 16:43

Build an app which animates a circle completing from 0 to 360 in android

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