All of the examples I have seen for drawing into a graphical view look
something like the following, but I can find no explanation for why:
canvas = surfaceHolder.lockCanvas(null);
synchronized (surfaceHolder) {
canvas.drawBitmap(bitmap, 0, 0, null);
}
surfaceHolder.unlockCanvasAndPost(canvas);
Why is the nested synchronized needed in addition to the unlock? What
might happen if the nested synchronized is omitted?
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