將android畫布保存爲位圖

Question

我想將畫布對象保存爲onDraw（）方法以保存爲位圖。請不要建議喜歡回答「view.getDrawingCache（真）」。我想直接保存畫布位圖

Answer 1

// first create a mutable bitmap - you determine the size 
bkg = Bitmap.createBitmap(width, width, Bitmap.Config.ARGB_8888); 

// create a canvas with that empty bitmap 
Canvas c = new Canvas(bkg); 

// do whatever drawing methoods you need....I did a circle 
c.drawColor(mContext.getResources().getColor(R.color.off_white)); 
p.setColor(pixel); 
c.drawCircle(width/2, width/2, width/2, p); 

// then pull off the entire canvas as a bitmapdrawable (or bitmap, if you perfer) 
return new BitmapDrawable(mContext.getResources(), bkg);