iOS 动态计算UITableViewCell 高度 以及计算UILable 高度 自定义Cell

UITableView 用于实现功能菜单。

类似于微信，微博，以及大众点评等等一些功能菜单；

个人的基本信息：包括 我的相册，我的收藏，名字，性别等等一些基础信息都是用UITableView 实现；所以写了个组件，用于以后的项目使用；

当中遇到计算UITableViewCell的高度以及计算UILable 高度；

首先定义Cell属性：

////  SJCellProperties.h//  HappyApp////  Created by LiShijia on 14/12/21.//  Copyright (c) 2014年 com.johnli. All rights reserved.//#import <Foundation/Foundation.h>@interface SJCellProperties : NSObject//名称@property (nonatomic,retain) NSString *functionName;//对应的value@property (nonatomic,retain) NSString *functionValue;//logo地址@property (nonatomic,retain) NSString *functionLogo;//是否有logo@property (nonatomic,assign) BOOL isHaveLogo;//后续还可以扩展属性@end

自定义Cell

////  SJTableViewCell.m//  HappyApp////  Created by LiShijia on 14/12/21.//  Copyright (c) 2014年 com.johnli. All rights reserved.//#import "SJTableViewCell.h"#import "SJCellProperties.h"@implementation SJTableViewCell-(id) initWithStyleNormal:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{            self =  [super initWithStyle:style reuseIdentifier:reuseIdentifier];        _functionName = [[UILabel alloc] initWithFrame:CGRectMake(15,17, 80, 20)];//    _value = [[UILabel alloc] initWithFrame:CGRectMake(self.frame.size.width-200, 5, 100, 100)];            [self.contentView addSubview:_functionName];//    [self.contentView addSubview:_value];        self.accessoryType = UITableViewCellAccessoryDisclosureIndicator;        return self;}-(id) initWithStyleLogo:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{            self =  [super initWithStyle:style reuseIdentifier:reuseIdentifier];        _functionName = [[UILabel alloc] initWithFrame:CGRectMake(40,17, 80, 20)];    _functionLogo = [[UIImageView alloc] initWithFrame:CGRectMake(15, 17, 22, 22)];    _functionLogo.image = [UIImage imageNamed:@"big.png"];    _functionValue = [[UILabel alloc] initWithFrame:CGRectMake(self.frame.size.width-150, 17, 150, 20)];    [self.contentView addSubview:_functionLogo];    [self.contentView addSubview:_functionName];    [self.contentView addSubview:_functionValue];            _functionValue.textAlignment = UITextAlignmentRight;    _functionValue.numberOfLines = 0;    _functionValue.lineBreakMode = NSLineBreakByCharWrapping;    _functionValue.font = [UIFont systemFontOfSize:16.0];        self.accessoryType = UITableViewCellAccessoryDisclosureIndicator;        return self;}-(void) layoutSubviews{        [super layoutSubviews];    NSString *functionValue = self.functionValue.text;        CGSize valueSize = [functionValue sizeWithFont:[UIFont systemFontOfSize:16] constrainedToSize:CGSizeMake(150, 10000000) lineBreakMode:NSLineBreakByWordWrapping];        CGRect rect = self.functionValue.frame;    rect.size.height = valueSize.height;    self.functionValue.frame = rect;}@end

使用自定义Cell

////  UserInfoViewController.m//  HappyApp////  Created by LiShijia on 14/12/21.//  Copyright (c) 2014年 com.johnli. All rights reserved.//#import "UserInfoViewController.h"#import "SJTableViewCell.h"#import "SJCellProperties.h"@implementation UserInfoViewController-(void) viewDidLoad{    [self.view setBackgroundColor:[UIColor redColor]];    self.title = @"UserInfo";    _tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStyleGrouped];    _tableView.dataSource = self;    _tableView.delegate = self;    [self.view addSubview:_tableView];        //初始化section；功能    [self initFunctions];    }-(void) initFunctions{        SJCellProperties *userHead = [[SJCellProperties alloc] init];    [userHead setFunctionName:@"头像"];        SJCellProperties *nickName = [[SJCellProperties alloc] init];    [nickName setFunctionName:@"昵称"];    [nickName setFunctionValue:@"johnLIddddretertretreddgdfgdfggdfgdfgddd的等待等待的的"];        SJCellProperties *sex = [[SJCellProperties alloc] init];    [sex setFunctionName:@"性别"];    [sex setFunctionValue:@"男"];        SJCellProperties *address = [[SJCellProperties alloc] init];    [address setFunctionName:@"常住地"];    [address setFunctionValue:@"深圳"];        _firstSection = [NSArray arrayWithObjects:userHead,nickName,sex,address, nil];    _arraySection = [NSArray arrayWithObjects:_firstSection, nil];    }-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView{    return 1;}-(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    NSArray *array = [_arraySection objectAtIndex:section];    if (section ==0) {        return array.count;    }else{        return array.count;    }}-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *identify = @"cell";    SJTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identify];    if(!cell){                cell = [[SJTableViewCell alloc] initWithStyleLogo:UITableViewCellStyleDefault reuseIdentifier:identify];            }        NSArray *array = [_arraySection objectAtIndex:indexPath.section];    SJCellProperties *cellProperties = [array objectAtIndex:indexPath.row];        cell.functionName.text = cellProperties.functionName;    cell.functionValue.text = cellProperties.functionValue;        //此处可以计算UILable的高度//    NSString *functionValue = cellProperties.functionValue;//    //    CGSize valueSize = [functionValue sizeWithFont:[UIFont systemFontOfSize:16] constrainedToSize:CGSizeMake(150, 10000000) lineBreakMode:NSLineBreakByWordWrapping];//    //    CGRect rect = cell.functionValue.frame;//    rect.size.height = valueSize.height;//    cell.functionValue.frame = rect;//    //    NSLog(@"%.f",valueSize.height);    //    [cell.beforeTitle setText:@"qqqqqqqqq"];//    [cell.textLabel setText:@"tetst"];    return cell;    }-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{    return 16;}-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    NSArray *array = [_arraySection objectAtIndex:indexPath.section];    SJCellProperties *cellProperties = [array objectAtIndex:indexPath.row];        //动态计算Cell的高度        NSString *functionValue = cellProperties.functionValue;        CGSize valueSize = [functionValue sizeWithFont:[UIFont systemFontOfSize:16] constrainedToSize:CGSizeMake(150, 10000000) lineBreakMode:NSLineBreakByWordWrapping];        if(valueSize.height + 20 < 50){        return 50;    }    return valueSize.height + 20;}@end