v5.5
Important feature
Optimize drawing to draw more smoothly。
增加优化绘制的选项，建议开启，可优化绘制速度和性能，纵享丝滑。
/*
Whether or not to optimize drawing, it is suggested to open, which can optimize the drawing speed and performance.
*/
boolean optimizeDrawing = true;
DoodleView mDoodleView = new DoodleView(this, bitmap, optimizeDrawing, doodleListener);