CoreText绘制基本知识

首先，进行创建一个UIView的子类，并实现如下代码:

- (void)drawRect:(CGRect)rect {
// Drawing code.

//创建要输出的字符串

CGPathRelease(leftColumnPath);CFRelease(framesetter);CFRelease(helvetica);CFRelease(helveticaBold);[string release];UIGraphicsPushContext(context);

}