【代碼筆記】獲得富文本設定以後的文字高度，筆記以後的

【代碼筆記】獲得富文本設定以後的文字高度，筆記以後的

一，。

 

二，工程圖。

三，代碼。

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.        //初始化介面    [self addView];   }#pragma -mark -functions//初始化介面-(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];        //富文本設定文字行間距    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];        //擷取設定文本間距以後的高度    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.}