ios-uitableviewcell展开

#import <UIKit/UIKit.h>

@interface ZSDHelpCell : UITableViewCell

@property (weak, nonatomic) IBOutlet UIImageView *selectImageView;

@property(nonatomic,copy)NSString *question;

@property(nonatomic,copy)NSString *answer;

//获取展开后的高度

-(CGFloat)getExpandHeight;

@end

#import "ZSDHelpCell.h"

//判断系统版本

#define IOS_VERSION_7_OR_ABOVE (([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)? (YES):(NO))

@interface ZSDHelpCell()

@property (weak, nonatomic) IBOutlet UILabel *questionLabel;

@property (weak, nonatomic) IBOutlet UILabel *answerLabel;

@end

@implementation ZSDHelpCell

- (void)awakeFromNib

{

    // Initialization code

}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated

{

    [super setSelected:selected animated:animated];

    // Configure the view for the selected state

}

-(void)setAnswer:(NSString *)answer

{

    if (_answer!=answer)

    {

        _answer=answer;

        _answerLabel.text=_answer;

    }

}

-(void)setQuestion:(NSString *)question

{

    if (_question!=question)

    {

        _question=question;

        _questionLabel.text=_question;

    }

}

-(CGFloat)getExpandHeight

{

    //ios8对于systemLayoutSizeFittingSize这个方法有效

    return IOS_VERSION_7_OR_ABOVE==1?[self systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height:120;

}

@end

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>

@property (weak, nonatomic) IBOutlet UITableView *myTableView;

@end

#import "ViewController.h"

#import "ZSDHelpCell.h"

#define kDefaultHeight 44.0f

#define kTabeleHeaderHeight 40.0f

//背景色

#define kThemeBackGroundColor [UIColor colorWithRed:0.93 green:0.92 blue:0.92 alpha:1]

#pragma mark - life circle

@interface ViewController ()

{

    NSMutableArray *expandArray;//展开的数组

    NSMutableDictionary *cellHeightDic;//设置cell高度的字典

    NSMutableDictionary *dataSourceDic;//读取plist文件内容

}

@end

@implementation ViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    _myTableView.backgroundColor=kThemeBackGroundColor;

    [self InitializationArrayOrDictionary];

    [self loadContentFromPlist];

    // Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

#pragma mark - private

-(void)InitializationArrayOrDictionary

{

    expandArray=[NSMutableArray array];

    cellHeightDic=[NSMutableDictionary dictionary];

    dataSourceDic=[NSMutableDictionary dictionary];

}

-(void)loadContentFromPlist

{

    NSString *plistPath=[[NSBundle mainBundle] pathForResource:@"Content" ofType:@"plist"];

    dataSourceDic=[NSMutableDictionary dictionaryWithContentsOfFile:plistPath];

    //NSLog(@"datasourcedic=%@",[dataSourceDic allValues]);

}

#pragma mark - UITableViewDataSource

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    return dataSourceDic.count;

}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

    NSArray *sectionArray=[dataSourceDic allValues];

    NSDictionary *rowDic=[sectionArray objectAtIndex:section];

    return rowDic.count;

}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

    if ([expandArray containsObject:indexPath])

    {

        NSString *key=[NSString stringWithFormat:@"%ld",indexPath.section];

        if ([cellHeightDic objectForKey:key])

        {

            return [[cellHeightDic objectForKey:key] floatValue];

        }

    }

    return kDefaultHeight;

}

-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

{

    return kTabeleHeaderHeight;

}

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section

{

    //section添加一个view和label

    CGRect tempRect=CGRectMake(0, 0, tableView.bounds.size.width,kTabeleHeaderHeight);

    UIView *headerView = [[UIView alloc]initWithFrame:tempRect];

    headerView.backgroundColor=kThemeBackGroundColor;

    NSArray *sectionArray=[dataSourceDic allKeys];

    NSString *text=[sectionArray objectAtIndex:section];

    UILabel *textLabel = [[UILabel alloc]initWithFrame:CGRectMake(12.0f, 14.0f, 100.0f, 15.0f)];

    textLabel.font = [UIFont systemFontOfSize:15.0f];

    textLabel.backgroundColor = [UIColor clearColor];

    textLabel.textColor = [UIColor grayColor];

    textLabel.text = text;

    [headerView addSubview:textLabel];

    return headerView;

}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    ZSDHelpCell *cell=(ZSDHelpCell *)[tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    NSArray *sectionArray=[dataSourceDic allValues];

    NSDictionary *rowDic=[sectionArray objectAtIndex:indexPath.section];

    NSArray *questionList=[rowDic allKeys];

    NSArray *answerList=[rowDic allValues];

    cell.question=[questionList objectAtIndex:indexPath.row];

    //设置每个cell的高度key

    NSString *key=[NSString stringWithFormat:@"%ld",indexPath.section];

    if (![cellHeightDic objectForKey:key])

    {

        cell.answer=[answerList objectAtIndex:indexPath.row];

        CGFloat height=[cell getExpandHeight];

        [cellHeightDic setObject:[NSNumber numberWithFloat:height] forKey:key];

    }

   // 隐藏cell

    UIImage *normalImg = [UIImage imageNamed:@"member_icon_more"];

    //展开cell

    UIImage *selectImg = [UIImage imageNamed:@"common_icon_down"];

    if ([expandArray containsObject:indexPath])

    {

        cell.selectImageView.image=selectImg;

        cell.answer=[answerList objectAtIndex:indexPath.row];

    }

    else

    {

        cell.selectImageView.image=normalImg;

        cell.answer=nil;

    }

    return cell;

}

#pragma mark - UITableViewDelegate

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    //如果数组中不存在该索引，那么把它添加到数组中

    if(![expandArray containsObject:indexPath])

    {

        [expandArray addObject:indexPath];

    }

    //否则从数组中移除

    else

    {

        [expandArray removeObject:indexPath];

    }

    [tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

}

@end