Android SurfaceView drawing

问题

I am new in android. I reviewed two examples Custom View with User Interaction and Android SurfaceView. I want that in second example draw cicle similarly with first example. How I can do this? Second question is: when the run() method has to stop?

回答1:

I found solution. For correctly work of SurfaceView I had to set background of canvas. When I done it everything is working fine.

回答2:

Create A bitmap then draw on its canvas and then add this bitmap to an imageview.

Create A bitmap:

    Bitmap bmp = Bitmap.createBitmap(width, height, config);

Draw on the bitmap canvas

    Canvas cv = new Canvas(bmp);
    cv.drawCircle(cx, cy, radius, paint)

setting to imageview

    img.setBackgroundDrawable(new BitmapDrawable(bmp));

Hope his help you.

来源：https://stackoverflow.com/questions/14139177/android-surfaceview-drawing