UILabel的minimumScaleFactor如何工作？ [英] How does a UILabel's minimumScaleFactor work?

问题描述

我之前使用过 minimumFontSize 但该功能现已弃用，我不太明白 minimumScaleFactor 的工作原理。

I have used minimumFontSize before but that function is now deprecated and i don't quite understand how minimumScaleFactor works.

我希望最大字体大小为10，最小字体大小为7.

I want the maximum font size to be 10 and the minimum to be 7.

我怎么能使用比例因子将重新调整大小缩小到字体大小7？

How can I achieve the re-size down to font size 7 with the scale factor?

UILabel 创建：

UILabel *label = [[UILabel alloc] init];
[label setTranslatesAutoresizingMaskIntoConstraints:NO];
label.text =  [labelName uppercaseString];
label.textAlignment = NSTextAlignmentCenter;
label.textColor = [UIColor whiteColor];
label.font = [UIFont fontWithName:HELVETICA_FONT_STYLE_BOLD size:9.5];
label.backgroundColor = [UIColor clearColor];
label.minimumScaleFactor = .1f;

[label addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:[label(WIDTH)]"
                                                              options:0
                                                              metrics:@{@"WIDTH" : [NSNumber numberWithFloat:buttonSize.width]}
                                                                views:NSDictionaryOfVariableBindings(label)]];

[contentView addSubview:label];

推荐答案

您需要设置 label.adjustsFontSizeToFitWidth = YES;

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