UILabel的高度和宽度自适应

.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;
}

#import "UILabel+LabelHeightAndWidth.h"

#pragma mark - labelOne  SizeToFitHeight
- (void)buildLabelOne
{
UILabel *labelOne = [[UILabel alloc] initWithFrame:CGRectMake(10, 30, 200, 50)];
labelOne.text = @"这是labelOne的高度自适应这是labelOne的高度自适应这是labelOne的高度自适应这是labelOne的高度自适应";
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 = @"这是labelTwo的宽度自适应这是labelTwo的宽度自适应这是labelTwo的宽度自适应";
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];
}