UITableVIewCell自动适应高度

发表：2013-03-26 14:26:35

UITableViewCell单元格通过tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath委托方法返回固定高度，要达到自动适应高度的单元格，只需要根据内容的高度动态改变该方法的返回值即可。

indexViewController.h

//
//  IndexViewController.h
//  lisvcat
//  首页
//  Created by MAC on 13-3-21.
//  Copyright (c) 2013年 李开涌. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "RefreshView.h"
#import "CustomCell.h"
#import "BaseViewController.h"
#import "IFTweetLabel.h"
#define FONT_SIZE 14.0f
#define CELL_CONTENT_WIDTH 320.0f
#define CELL_CONTENT_MARGIN 10.0f
@interface IndexViewController : BaseViewController<UITableViewDataSource,UITableViewDelegate> {
    NSArray *data_;
}
- (void)refresh;
@property (assign,nonatomic) IBOutlet UITableView *tableView;
@end

indexViewController.m

单元格高度设置

//表格高度
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    NSString *text = [data_ objectAtIndex:[indexPath row]];
                                                                                                                                                                                             
    CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
                                                                                                                                                                                             
    CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
                                                                                                                                                                                             
    CGFloat height = MAX(size.height, 44.0f);
                                                                                                                                                                                             
    return height + (CELL_CONTENT_MARGIN * 2)+30;
}

单元格

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    NSString *identifier=@"mycell";
    NSString *str=[data_ objectAtIndex:indexPath.row];
    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:identifier];
    UILabel *label = nil;
    NSString *text = str;
    CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
                                                                                                                                                                                
    CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
    [label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];
                                                                                                                                                                                
    if (cell==nil) {
        cell =[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
];
                                                                                                                                                                                    
                                                                                                                                                                                    
    }
                                                                                                                                                                                
    return cell;
                                                                                                                                                                                
}

以上代码只适用于UITableViewCell为全文本的情况，如果非全文本，可以通过计算UILable控件的高度实现Cell所需要的高度。详情可参考：http://beauty-soft.net/blog/ceiba/Ios/20130330/610.html

本站仅提供存储服务，所有内容均由用户发布，如发现有害或侵权内容，请点击举报。