jixin_new/shiku_im/ClassesNew/classes/myVc/Vc/LabelSize.m

//
//  LabelSize.m
//  WMpeijian
//
//  Created by Cindy on 15/11/9.
//  Copyright © 2015年 student. All rights reserved.
//

#import "LabelSize.h"
#import "Common.h"

@implementation LabelSize
+ (CGSize)widthWithString:(NSString *)string font:(UIFont *)font{
    CGRect rect = [string boundingRectWithSize:CGSizeMake(kScreenWidth, 25.f)//限制最大的宽度和高度
                                       options:NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesFontLeading  |NSStringDrawingUsesLineFragmentOrigin//采用换行模式
                                    attributes:@{NSFontAttributeName: font}//传入的字体字典
                                       context:nil];
   
    return rect.size;
}

+(CGFloat)heightOfString:(NSString *)string font:(UIFont *)font width:(CGFloat)width {
    CGRect bounds;
    NSDictionary * parameterDict=[NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName];
    bounds=[string boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:parameterDict context:nil];
    return bounds.size.height;
}

+(CGFloat)heightOfString:(NSString *)string font:(UIFont *)font height:(CGFloat)height {
    CGRect bounds;
    NSDictionary * parameterDict=[NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName];
    bounds=[string boundingRectWithSize:CGSizeMake(MAXFLOAT, height) options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:parameterDict context:nil];
    return bounds.size.width;
}

+ (CGSize)heightWithString:(NSString *)string font:(UIFont *)font{
    CGRect rect = [string boundingRectWithSize:CGSizeMake(kScreenWidth - 10.f, 8000.f)//限制最大的宽度和高度
                                       options:NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesFontLeading  |NSStringDrawingUsesLineFragmentOrigin//采用换行模式
                                    attributes:@{NSFontAttributeName: font}//传入的字体字典
                                       context:nil];
    
    return rect.size;
}
@end