UITableView分组的展开与折叠封装

2018-02-09 12:47:38来源:https://www.jianshu.com/p/5c437a23ea52作者:刘高见人点击

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好久没写多东西了,唯恐自己被这个世界所遗忘,今天就搞一篇技术文章。(哈哈,刷刷存在感罢了。。。)不废话了,说正经的。之前项目中用到了一个功能:UITableView分组的展开与折叠,今天按其单独模块提出来,分析一下其具体实现逻辑和代码实现:





功能样式
实现逻辑

首先:因为我们操作tableView的时候,控制其展开与折叠的操作是在点击每一个section的头部来完成的,我们就可以从tableView的代理方法:


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

来入手,因此需要自定义一个响应事件的公共的view。
其次:自定义一个tableView 继承自:UITableView,实现UITableView的UITableViewDelegate,UITableViewDataSource代理方法,并将这些方法进行一个公共的封装,暴漏成接口,供别的文件来使用。


实现过程

下面就来看一下具体代码的实现过程:
(1)自定义LGJFoldOpenSectionHeader 继承: UIView
.h


#import <UIKit/UIKit.h>
//折叠状态
typedef enum : NSUInteger {
SectionHeaderStateFold,
SectionHeaderStateOpen,
} SectionHeaderState;
//箭头所在位置 (可扩展)
typedef enum : NSUInteger {
ArrowPositionLeft,
ArrowPositionRight,
} ArrowPosition;
@protocol FoldOpenSectionHeaderDelegate <NSObject>
//点击一个分组的头的以后响应方法
- (void)foldOpenSectionHeaderTappedAtIndex:(NSInteger)index;
@end
@interface LGJFoldOpenSectionHeader : UIView
@property (nonatomic, weak) id <FoldOpenSectionHeaderDelegate> delegate;
//初始化与属性设置
- (instancetype)initWithFrame:(CGRect)frame tag:(NSInteger)tag;
- (void)setupWithBackgroundColor:(UIColor *)backgroundColor
titleString:(NSString *)titleString
titleColor:(UIColor *)titleColor
titleFont:(UIFont *)titleFont
descriptionString:(NSString *)descriptionString
descriptionColor:(UIColor *)descriptionColor
descriptionFont:(UIFont *)descriptionFont
arrowImage:(UIImage *)arrowImage
arrowPosition:(ArrowPosition)arrowPosition
sectionState:(SectionHeaderState)sectionState;
@end

.m


#import "LGJFoldOpenSectionHeader.h"
//以下几个参数,均可修改,自行设置
#define LineWidth 0.3f
#define Margin 8.0f
#define IconSize 24.0f
@interface LGJFoldOpenSectionHeader()
@property(nonatomic, strong)UILabel *titleLabel;
@property(nonatomic, strong)UILabel *descriptionLabel;
@property(nonatomic, strong)UIImageView *arrowImageView;
@property(nonatomic, strong)CAShapeLayer *sepertorLine;
@property(nonatomic, assign)SectionHeaderState status;
@property(nonatomic, assign)ArrowPosition position;
@property(nonatomic, strong)UITapGestureRecognizer *tap;
@end
@implementation LGJFoldOpenSectionHeader
-(instancetype)initWithFrame:(CGRect)frame tag:(NSInteger)tag{
self = [super initWithFrame:frame];
if (self) {
self.tag = tag;
[self setupSubviewsWithArrowPosition:ArrowPositionRight];
}
return self;
}
-(void)awakeFromNib{
[super awakeFromNib];
[self setupSubviewsWithArrowPosition:ArrowPositionRight];
}
-(void)setupWithBackgroundColor:(UIColor *)backgroundColor
titleString:(NSString *)titleString
titleColor:(UIColor *)titleColor
titleFont:(UIFont *)titleFont
descriptionString:(NSString *)descriptionString
descriptionColor:(UIColor *)descriptionColor
descriptionFont:(UIFont *)descriptionFont
arrowImage:(UIImage *)arrowImage
arrowPosition:(ArrowPosition)arrowPosition
sectionState:(SectionHeaderState)sectionState{
[self setBackgroundColor:backgroundColor];
self.titleLabel.text = titleString;
self.titleLabel.textColor = titleColor;
self.titleLabel.font = titleFont;

self.descriptionLabel.text = descriptionString;
self.descriptionLabel.textColor = descriptionColor;
self.descriptionLabel.font = descriptionFont;
self.arrowImageView.image = arrowImage;
self.status = sectionState;
self.position = arrowPosition;
if (sectionState == SectionHeaderStateOpen) {
if (arrowPosition == ArrowPositionRight) {
self.arrowImageView.transform = CGAffineTransformMakeRotation(-M_PI/2);
}else{
self.arrowImageView.transform = CGAffineTransformMakeRotation(M_PI/2);
}
}else{
if (arrowPosition == ArrowPositionRight) {
_arrowImageView.transform = CGAffineTransformMakeRotation(M_PI/2);
}else{
_arrowImageView.transform = CGAffineTransformMakeRotation(0);
}
}
}
-(void)setupSubviewsWithArrowPosition:(ArrowPosition)arrowPosition{
CGFloat labelWidth = (self.frame.size.width - Margin * 2 - IconSize) / 2;
CGFloat labelHeight = self.frame.size.height;
CGRect arrowRect = CGRectMake(0, (self.frame.size.height - IconSize) / 2, IconSize, IconSize);
CGRect titleRect = CGRectMake(Margin + IconSize, 0, labelWidth, labelHeight);
CGRect descripRect = CGRectMake(Margin + IconSize + labelWidth, 0, labelWidth, labelHeight);
if (arrowPosition == ArrowPositionRight) {
arrowRect.origin.x = Margin*2 + labelWidth*2;
titleRect.origin.x = Margin;
descripRect.origin.x = Margin + labelWidth;
}
[self.titleLabel setFrame:titleRect];
[self.descriptionLabel setFrame:descripRect];
[self.arrowImageView setFrame:arrowRect];
[self.sepertorLine setPath:[self getSepertorPath].CGPath];

[self addSubview:self.titleLabel];
[self addSubview:self.descriptionLabel];
[self addSubview:self.arrowImageView];
[self addGestureRecognizer:self.tap];
[self.layer addSublayer:self.sepertorLine];
}

-(UIBezierPath *)getSepertorPath{
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(0, self.frame.size.height - LineWidth)];
[path addLineToPoint:CGPointMake(self.frame.size.width, self.frame.size.height - LineWidth)];
return path;
}
#pragma mark------Lazy loading
-(UILabel *)titleLabel{
if (!_titleLabel) {
_titleLabel = [[UILabel alloc]initWithFrame:CGRectZero];
_titleLabel.backgroundColor = [UIColor clearColor];
_titleLabel.textAlignment = NSTextAlignmentLeft;
}
return _titleLabel;
}
-(UILabel *)descriptionLabel{
if (!_descriptionLabel) {
_descriptionLabel = [[UILabel alloc]initWithFrame:CGRectZero];
_descriptionLabel.backgroundColor = [UIColor clearColor];
_descriptionLabel.textAlignment = NSTextAlignmentRight;
}
return _descriptionLabel;
}
-(UIImageView *)arrowImageView{
if (!_arrowImageView) {
_arrowImageView = [[UIImageView alloc]initWithFrame:CGRectZero];
_arrowImageView.backgroundColor = [UIColor clearColor];
_arrowImageView.contentMode = UIViewContentModeScaleAspectFit;
}
return _arrowImageView;
}
- (CAShapeLayer *)sepertorLine
{
if (!_sepertorLine) {
_sepertorLine = [CAShapeLayer layer];
_sepertorLine.strokeColor = [UIColor whiteColor].CGColor;
_sepertorLine.lineWidth = LineWidth;
}
return _sepertorLine;
}
-(UITapGestureRecognizer *)tap{
if (!_tap) {
_tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];
}
return _tap;
}
-(void)tapAction:(UITapGestureRecognizer *)sender{
[self shouldExpand:![NSNumber numberWithInteger:self.status].boolValue];
if ([self.delegate respondsToSelector:@selector(foldOpenSectionHeaderTappedAtIndex:)]) {
self.status = [NSNumber numberWithBool:(![NSNumber numberWithInteger:self.status].boolValue)].integerValue;
[self.delegate foldOpenSectionHeaderTappedAtIndex:self.tag];
}
}
-(void)shouldExpand:(BOOL)expand{
[UIView animateWithDuration:.2 animations:^{
if (expand) {
if (self.position == ArrowPositionRight) {
self.arrowImageView.transform = CGAffineTransformMakeRotation(-M_PI / 2);
}else{
self.arrowImageView.transform = CGAffineTransformMakeRotation(M_PI / 2);
}
}else{
if (self.position == ArrowPositionRight) {
self.arrowImageView.transform = CGAffineTransformMakeRotation(M_PI / 2);
}else{
self.arrowImageView.transform = CGAffineTransformMakeRotation(0);
}
}
} completion:^(BOOL finished) {
if (finished) {
self.sepertorLine.hidden = expand;
}
}];
}
@end


具体UI样式如何,我们可以根据不同的应用场景来具体实现,以上只是参考。创建出来之后就是下面这样:


样式1 小图标在右



样式2 小图标在右

(2)自定义LGJFoldOpenTableView : UITableView并实现UITableViewDelegate,UITableViewDataSource
.h


#import <UIKit/UIKit.h>
#import "LGJFoldOpenSectionHeader.h"
@class LGJFoldOpenTableView;
@protocol LGJFoldOpenTableViewDelegate <NSObject>
@required
/**
* 箭头的位置
*/
- (ArrowPosition)jj_positionForTableView:(LGJFoldOpenTableView *)tableView;
/**
* 返回section的个数
*/
- (NSInteger )jj_numberOfSectionForTableView:(LGJFoldOpenTableView *)tableView;
/**
* cell的个数
*/
- (NSInteger )jj_foldingTableView:(LGJFoldOpenTableView *)tableView numberOfRowsInSection:(NSInteger )section;
/**
* header的高度
*/
- (CGFloat )jj_foldingTableView:(LGJFoldOpenTableView *)tableView heightForHeaderInSection:(NSInteger )section;
/**
* cell的高度
*/
- (CGFloat )jj_foldingTableView:(LGJFoldOpenTableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
/**
* header的标题
*/
- (NSString *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView titleForHeaderInSection:(NSInteger )section;
/**
* 返回cell
*/
- (UITableViewCell *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
/**
* 点击cell
*/
- (void )jj_foldingTableView:(LGJFoldOpenTableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;

@optional
/**
* 箭头图片
*/
- (UIImage *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView arrowImageForSection:(NSInteger )section;
/**
* 下面是一些属性的设置
*/
- (NSString *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView descriptionForHeaderInSection:(NSInteger )section;
- (UIColor *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView backgroundColorForHeaderInSection:(NSInteger )section;
- (UIFont *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView fontForTitleInSection:(NSInteger )section;
- (UIFont *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView fontForDescriptionInSection:(NSInteger )section;
- (UIColor *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView textColorForTitleInSection:(NSInteger )section;
- (UIColor *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView textColorForDescriptionInSection:(NSInteger )section;
@end
@interface LGJFoldOpenTableView : UITableView<UITableViewDelegate,UITableViewDataSource>
@property (nonatomic, weak) id<LGJFoldOpenTableViewDelegate> foldingDelegate;
@property (nonatomic, assign) SectionHeaderState state;
@end

.m


#import "LGJFoldOpenTableView.h"
@interface LGJFoldOpenTableView ()<FoldOpenSectionHeaderDelegate>
@property (nonatomic, strong) NSMutableArray *statusArray;
@end
@implementation LGJFoldOpenTableView
#pragma mark------Initialize
- (instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self setupDelegateAndDataSource];
}
return self;
}

- (instancetype)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
[self setupDelegateAndDataSource];
}
return self;
}
- (void)setupDelegateAndDataSource
{
// 适配iOS 11
#ifdef __IPHONE_11_0
if ([self respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}
self.estimatedRowHeight = 0;
self.estimatedSectionHeaderHeight = 0;
self.estimatedSectionFooterHeight = 0;
#endif

self.delegate = self;
self.dataSource = self;
if (self.style == UITableViewStylePlain) {
self.tableFooterView = [[UIView alloc] init];
}
// 添加监听
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onChangeStatusBarOrientationNotification:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
}
- (NSMutableArray *)statusArray
{
if (!_statusArray) {
_statusArray = [NSMutableArray array];
}

if (!_state) {
_state = SectionHeaderStateFold;
}
if (_statusArray.count) {
if (_statusArray.count > self.numberOfSections) {
[_statusArray removeObjectsInRange:NSMakeRange(self.numberOfSections - 1, _statusArray.count - self.numberOfSections)];
}else if (_statusArray.count < self.numberOfSections) {
for (NSInteger i = self.numberOfSections - _statusArray.count; i < self.numberOfSections; i++) {
[_statusArray addObject:[NSNumber numberWithInteger:_state]];
}
}
}else{
for (NSInteger i = 0; i < self.numberOfSections; i++) {
[_statusArray addObject:[NSNumber numberWithInteger:_state]];
}
}
return _statusArray;
}
- (void)onChangeStatusBarOrientationNotification:(NSNotification *)notification
{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self reloadData];
});
}
#pragma mark - UI Configration
-(ArrowPosition )perferedArrowPosition{
if (self.foldingDelegate && [self.foldingDelegate respondsToSelector:@selector(jj_positionForTableView:)]) {
[self.foldingDelegate jj_positionForTableView:self];
}
return ArrowPositionRight;
}
- (UIColor *)backgroundColorForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:backgroundColorForHeaderInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self backgroundColorForHeaderInSection:section];
}
return [UIColor colorWithRed:102/255.f green:102/255.f blue:255/255.f alpha:1.f];
}
- (NSString *)titleForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:titleForHeaderInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self titleForHeaderInSection:section];
}
return [NSString string];
}
- (UIFont *)titleFontForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:fontForTitleInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self fontForTitleInSection:section];
}
return [UIFont boldSystemFontOfSize:16];
}
- (UIColor *)titleColorForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:textColorForTitleInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self textColorForTitleInSection:section];
}
return [UIColor whiteColor];
}
- (NSString *)descriptionForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:descriptionForHeaderInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self descriptionForHeaderInSection:section];
}
return [NSString string];
}
- (UIFont *)descriptionFontForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:fontForDescriptionInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self fontForDescriptionInSection:section];
}
return [UIFont boldSystemFontOfSize:13];
}
- (UIColor *)descriptionColorForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:textColorForDescriptionInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self textColorForDescriptionInSection:section];
}
return [UIColor whiteColor];
}
- (UIImage *)arrowImageForSection:(NSInteger )section
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:arrowImageForSection:)]) {
return [_foldingDelegate jj_foldingTableView:self arrowImageForSection:section];
}
return [UIImage imageNamed:@"Arrow"];
}
#pragma mark - UITableViewDelegate,UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_numberOfSectionForTableView:)]) {
return [_foldingDelegate jj_numberOfSectionForTableView:self];
}else{
return self.numberOfSections;
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (((NSNumber *)self.statusArray[section]).integerValue == SectionHeaderStateOpen) {
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:numberOfRowsInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self numberOfRowsInSection:section];
}
}
return 0;
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:heightForHeaderInSection:)]) {
return [_foldingDelegate jj_foldingTableView:self heightForHeaderInSection:section];
}else{
return self.sectionHeaderHeight;
}
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:heightForRowAtIndexPath:)]) {
return [_foldingDelegate jj_foldingTableView:self heightForRowAtIndexPath:indexPath];
}else{
return self.rowHeight;
}
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
if (self.style == UITableViewStylePlain) {
return 0;
}else{
return 0.001;
}
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
LGJFoldOpenSectionHeader *sectionHeaderView = [[LGJFoldOpenSectionHeader alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, [self tableView:self heightForHeaderInSection:section]) tag:section];

[sectionHeaderView setupWithBackgroundColor:[self backgroundColorForSection:section]
titleString:[self titleForSection:section]
titleColor:[self titleColorForSection:section]
titleFont:[self titleFontForSection:section]
descriptionString:[self descriptionForSection:section]
descriptionColor:[self descriptionColorForSection:section]
descriptionFont:[self descriptionFontForSection:section]
arrowImage:[self arrowImageForSection:section]
arrowPosition:[self perferedArrowPosition]
sectionState:((NSNumber *)self.statusArray[section]).integerValue];

sectionHeaderView.delegate = self;

return sectionHeaderView;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:cellForRowAtIndexPath:)]) {
return [_foldingDelegate jj_foldingTableView:self cellForRowAtIndexPath:indexPath];
}
return [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"DefaultCellIndentifier"];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (_foldingDelegate && [_foldingDelegate respondsToSelector:@selector(jj_foldingTableView:didSelectRowAtIndexPath:)]) {
[_foldingDelegate jj_foldingTableView:self didSelectRowAtIndexPath:indexPath];
}
}
#pragma mark - FoldOpenSectionHeaderDelegate
- (void)foldOpenSectionHeaderTappedAtIndex:(NSInteger)index
{
BOOL currentIsOpen = ((NSNumber *)self.statusArray[index]).boolValue;

[self.statusArray replaceObjectAtIndex:index withObject:[NSNumber numberWithBool:!currentIsOpen]];

NSInteger numberOfRow = [_foldingDelegate jj_foldingTableView:self numberOfRowsInSection:!currentIsOpen];
NSMutableArray *rowArray = [NSMutableArray array];
if (numberOfRow) {
for (NSInteger i = 0; i < numberOfRow; i++) {
[rowArray addObject:[NSIndexPath indexPathForRow:i inSection:index]];
}
}
if (rowArray.count) {
if (currentIsOpen) {
[self deleteRowsAtIndexPaths:[NSArray arrayWithArray:rowArray] withRowAnimation:UITableViewRowAnimationTop];
}else{
[self insertRowsAtIndexPaths:[NSArray arrayWithArray:rowArray] withRowAnimation:UITableViewRowAnimationTop];
}
}
}
@end

使用

准备工作都已经做完了之后,使用起来也是相当的方便,我们需要在使用到的地方导入


#import "LGJFoldOpenTableView.h"

并实现:LGJFoldOpenTableViewDelegate即可
如下:


#import "TestViewController.h"
@interface TestViewController ()<LGJFoldOpenTableViewDelegate>
@property(nonatomic,strong)LGJFoldOpenTableView *tableView;
@end
@implementation TestViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.automaticallyAdjustsScrollViewInsets = NO;
[self createFoldTableView];

}
-(void)createFoldTableView{
LGJFoldOpenTableView *tab = [[LGJFoldOpenTableView alloc]initWithFrame:CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height)];
self.tableView = tab;
[self.view addSubview:tab];
tab.foldingDelegate = self;
if (self.position) {
tab.state = SectionHeaderStateOpen;
}
}

/**
* 箭头的位置
*/
- (ArrowPosition)jj_positionForTableView:(LGJFoldOpenTableView *)tableView{
return self.position ? : ArrowPositionLeft;
}
/**
* 返回section的个数
*/
- (NSInteger )jj_numberOfSectionForTableView:(LGJFoldOpenTableView *)tableView{
return 6;
}
/**
* cell的个数
*/
- (NSInteger )jj_foldingTableView:(LGJFoldOpenTableView *)tableView numberOfRowsInSection:(NSInteger )section{
return 5;
}
/**
* header的高度
*/
- (CGFloat )jj_foldingTableView:(LGJFoldOpenTableView *)tableView heightForHeaderInSection:(NSInteger )section{
return 40;
}
/**
* cell的高度
*/
- (CGFloat )jj_foldingTableView:(LGJFoldOpenTableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return 30;
}
/**
* header的标题
*/
- (NSString *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView titleForHeaderInSection:(NSInteger )section{
return [NSString stringWithFormat:@"第%ld组",section + 1];
}
/**
* 返回cell
*/
- (UITableViewCell *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *cellID = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil) {
cell =[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
}
cell.textLabel.text = [NSString stringWithFormat:@"%ld",indexPath.row + 1];
return cell;
}
/**
* 点击cell
*/
- (void )jj_foldingTableView:(LGJFoldOpenTableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
-(NSString *)jj_foldingTableView:(LGJFoldOpenTableView *)tableView descriptionForHeaderInSection:(NSInteger)section{
return @"descriptionForHeader";
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end

以上也许还有很多不足,欢迎各路大神,批评指正···








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