iOS 根据固定控件宽，获取label文字的高

//  ViewController.m
//  计算文字宽高
//
//  Created by Admin on 2019/7/13.
//  Copyright © 2019年 JZY. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    //定义字体
    NSDictionary *attrs = @{NSFontAttributeName :[UIFont systemFontOfSize:14]};
    
    //定义这个控件文字最大的宽度和高度，这里定义了可以无限宽和高
    CGSize maxsizes=CGSizeMake(200, 200);
    
    UILabel *texts;
    texts.text=@"阿瑟费好的咖啡好";
    //textzise即为当前控件文字的所占宽高
    CGSize textzise= [texts.text boundingRectWithSize:maxsizes options:NSStringDrawingUsesLineFragmentOrigin attributes:attrs context:nil].size;
    NSLog(@"%f--%f",textzise.width,textzise.height);
    // Do any additional setup after loading the view, typically from a nib.
    
   CGFloat a = [self getLabelHeightWithText:@"阿瑟费好的咖啡好" width:200 font:14];
    NSLog(@"getLabelHeightWithText: %f",a);
}


- (CGFloat)getLabelHeightWithText:(NSString *)text width:(CGFloat)width font: (CGFloat)font{
    CGRect rect = [text boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:font]} context:nil];
    
    return rect.size.height;
    
}


@end