仿写猿题库练题画板功能 博客地址:http://bihongbo.com/2016/01/03/memoryGhostdrawRect/
bb-coder / bhbdrawboarderdemo Goto Github PK
View Code? Open in Web Editor NEW仿写猿题库练题画板功能
仿写猿题库练题画板功能
仿写猿题库练题画板功能 博客地址:http://bihongbo.com/2016/01/03/memoryGhostdrawRect/
嗨,当我把这句代码注释掉dv.backgroundColor = [UIColor whiteColor];就不会有内存问题了,求解释下原因,谢谢
当CAShapeLayer 添加了非常多个的时候,性能会被降低,内存和CPU是没有任何改变,但GPU逐渐上升,最后造成卡顿卡顿!如果使用了CAShapeLayer 橡皮擦这个功能无法真正的实现擦除!你有更好的思路么?
如果先用两根手指点击屏幕,之后再用一根手指就操作不了了,在scrollview里[event allTouches].count一直是2了
你好 怎样实现橡皮擦功能啊 我需要加背景图片 而且背景图片 不断得更换 我怎样添加橡皮擦功能
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