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