Question

I am trying to form a simple animation (At the moment nothing more than drawing some lines) in a View using mono for android.

Here is my code:

public class DemoView : View
{
    public DemoView(Context context, IAttributeSet attrs) :
        base(context, attrs)
    {
        Initialize();
    }

    public DemoView(Context context, IAttributeSet attrs, int defStyle) :
        base(context, attrs, defStyle)
    {
        Initialize();
    }

    private void Initialize()
    {
    }

    protected override void OnDraw(Android.Graphics.Canvas canvas)
    {
        base.OnDraw(canvas);

        canvas.DrawColor(Color.Blue);

        Paint pen = new Paint();

        pen.Color = Color.Red;
        pen.StrokeWidth = 2;
        pen.SetStyle(Paint.Style.Stroke);

        canvas.DrawLine(0, 0, 25, 25, pen);
    }

    //How to add other lines to form an animation?
}

The code above just renders background in blue color and draws a line. I am looking for methods ( I beleive something like OnPaint so that I can draw some lines while the application is open. I really do not know what too look for.

Answer 1

Have a look at the MonoDroid samples project on github. It’s a comprehensive resource for how to implement different Android solutions with MonoDroid.

It contains several example apps that use drawing of animations including a Snake game and a Live Wallpaper.