今天記錄下 UILabel的高度和寬度自適應(yīng)往堡，方法特別簡單
1 創(chuàng)建category
.h中
+ (CGFloat)getHeightByWidth:(CGFloat)width title:(NSString *)title font:(UIFont*)font;
+ (CGFloat)getWidthWithTitle:(NSString *)title font:(UIFont *)font;
.m中
+ (CGFloat)getHeightByWidth:(CGFloat)width title:(NSString *)title font:(UIFont *)font
{
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, width, 0)];
label.text = title;
label.font = font;
label.numberOfLines = 0;
[label sizeToFit];
CGFloat height = label.frame.size.height;
return height;
}
+ (CGFloat)getWidthWithTitle:(NSString *)title font:(UIFont *)font {
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 1000, 0)];
label.text = title;
label.font = font;
[label sizeToFit];
return label.frame.size.width;
}
2 使用時 引入頭文件
#import "UILabel+LabelHeightAndWidth.h"
#pragma mark - labelOne SizeToFitHeight
- (void)buildLabelOne
{
UILabel *labelOne = [[UILabel alloc] initWithFrame:CGRectMake(10, 30, 200, 50)];
labelOne.text = @"這是labelOne的高度自適應(yīng)這是labelOne的高度自適應(yīng)這是labelOne的高度自適應(yīng)這是labelOne的高度自適應(yīng)";
labelOne.backgroundColor = [UIColor grayColor];
labelOne.font = [UIFont systemFontOfSize:20];
labelOne.numberOfLines = 0;
CGFloat height = [UILabel getHeightByWidth:labelOne.frame.size.width title:labelOne.text font:labelOne.font];
labelOne.frame = CGRectMake(10, 30, 200, height);
[self.view addSubview:labelOne];
}
#pragma mark - labelTwo SizeToFitWidth
- (void)buildLabelTwo
{
UILabel *labelTwo = [[UILabel alloc] initWithFrame:CGRectMake(10, 300, 50, 100)];
labelTwo.text = @"這是labelTwo的寬度自適應(yīng)這是labelTwo的寬度自適應(yīng)這是labelTwo的寬度自適應(yīng)";
labelTwo.backgroundColor = [UIColor cyanColor];
labelTwo.font = [UIFont systemFontOfSize:20];
CGFloat width = [UILabel getWidthWithTitle:labelTwo.text font:labelTwo.font];
labelTwo.frame = CGRectMake(10, 300, width, 100);
[self.view addSubview:labelTwo];
}
效果如下圖
EEC19BD7-5C46-4284-B66D-7F31CEB87E4D.png
