我有一种在矩形中绘制字符串的方法,但由于某种原因它不起作用。
这是代码:
- (void) drawString: (NSString*) s withFont: (UIFont*) font inRect: (CGRect) contextRect {
CGFloat fontHeight = font.pointSize;
CGFloat yOffset = (contextRect.size.height - fontHeight) / 2.0;
CGRect textRect = CGRectMake(0, yOffset, contextRect.size.width, fontHeight);
[s drawInRect: textRect withFont: font lineBreakMode: UILineBreakModeClip
alignment: UITextAlignmentCenter]; }
谢谢你!