【代码笔记】获得富文本设置以后的文字高度

一，效果图。

 

二，工程图。

三，代码。

RootViewController.h

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController @end

 

RootViewController.m

#import "RootViewController.h"

@interface RootViewController () @end

@implementation RootViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization
 } return self; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. //初始化界面
 [self addView]; } #pragma -mark -functions
//初始化界面
-(void)addView { //文字
    UILabel *dataLabel = [[UILabel alloc] init]; dataLabel.backgroundColor = [UIColor orangeColor]; dataLabel.text = @"我是文字文字文字文字文字文字文字文字文字文字文字11111111111111111111111111111111111"; dataLabel.textColor = [UIColor redColor]; dataLabel.font = [UIFont fontWithName:@"Arial" size:14]; dataLabel.numberOfLines = 0; [self.view addSubview:dataLabel]; //富文本设置文字行间距
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init]; paragraphStyle.lineSpacing = 4; NSDictionary *attributes = @{ NSFontAttributeName:[UIFont systemFontOfSize:14], NSParagraphStyleAttributeName:paragraphStyle}; dataLabel.attributedText = [[NSAttributedString alloc]initWithString:dataLabel.text attributes:attributes]; //获取设置文本间距以后的高度
    CGRect fram = [dataLabel.attributedText boundingRectWithSize:CGSizeMake(210, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil]; dataLabel.frame=CGRectMake(50, 100, 210, fram.size.height); } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.
}