Question

我是自定义绘制一些文字：

point = CGPointMake(77, 5);
    [[message valueForKey:@"user_login"] drawAtPoint:point forWidth:200 
                                            withFont:mainFont 
                                         minFontSize:MIN_MAIN_FONT_SIZE 
                                      actualFontSize:NULL 
                                       lineBreakMode:UILineBreakModeTailTruncation 
                                  baselineAdjustment:UIBaselineAdjustmentAlignBaselines];

如何画5条线？相当于：

rect = CGRectMake(77, 25, 238, 68);
bodyLabel = [[UILabel alloc] initWithFrame:rect];
bodyLabel.font = [UIFont fontWithName:@"HelveticaNeue" size:12];
bodyLabel.numberOfLines = 5;
bodyLabel.lineBreakMode = UILineBreakModeWordWrap;
    bodyLabel.textColor = [UIColor blackColor];
    [self.contentView addSubview: bodyLabel];

Answer 1

-drawAtPoint:withFont:...的文档说“此方法在绘图期间不执行任何换行。”如果您使用-drawInRect:withFont:代替-drawAtPoint:withFont:...，则会绘制多行。您还可以使用-sizeWithFont:constrainedToSize:来确定尺寸。

Answer 2

您应该使用drawInRect:withFont:...

，而不是在iOS7 +中弃用drawWithRect:options:attributes:context:

[string drawWithRect:CGRectMake(x, y, width, height)
             options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingTruncatesLastVisibleLine
          attributes:@{NSFontAttributeName:<font>, NSForegroundColorAttributeName:<color>
             context:nil];

如何使用drawAtPoint绘制多行文本？

2 个答案: