SurfaceView clears Canvas how to operate

September 26, 2021By Simo Surface

public void < span class="hljs-title">ClearDraw(){ Canvas canvas = null; try{ canvas = surfaceHolder.lockCanvas(null); canvas.drawColor(Color.WHITE); canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.SRC);} catch(Exception e){ }finally{ if(canvas != null){ surfaceHolder.unlockCanvasAndPost(canvas);}} }

Call this method before drawing to clear the canvas .

public void< /span> ClearDraw(){ Canvas canvas = null;  try{ canvas = surfaceHolder.lockCanvas(null); canvas.drawColor(Color.WHITE); canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode. SRC); }catch(Exception e){ }finally{ if(canvas != null){ surfaceHolder.unlockCanvasAndPost(canvas);}} }

Call this method before drawing You can clear the canvas.

canvas, empty, How, operation, SurfaceView

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